src/video/SDL_renderer_gl.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 28 Aug 2006 03:17:39 +0000
changeset 1985 8055185ae4ed
parent 1975 ccef0d0c40c6
child 1986 f4c65e3bfaed
permissions -rw-r--r--
Added source color and alpha modulation support. Added perl script to generate optimized render copy functions.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_RENDER_OGL
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#include "SDL_video.h"
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#include "SDL_opengl.h"
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#include "SDL_sysvideo.h"
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#include "SDL_pixels_c.h"
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#include "SDL_rect_c.h"
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#include "SDL_yuv_sw_c.h"
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/* OpenGL renderer implementation */
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static const float inv255f = 1.0f / 255.0f;
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static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
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static int GL_ActivateRenderer(SDL_Renderer * renderer);
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static int GL_DisplayModeChanged(SDL_Renderer * renderer);
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static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int GL_SetTexturePalette(SDL_Renderer * renderer,
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                                SDL_Texture * texture,
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                                const SDL_Color * colors, int firstcolor,
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                                int ncolors);
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static int GL_GetTexturePalette(SDL_Renderer * renderer,
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                                SDL_Texture * texture, SDL_Color * colors,
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                                int firstcolor, int ncolors);
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static int GL_SetTextureColorMod(SDL_Renderer * renderer,
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                                 SDL_Texture * texture);
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static int GL_SetTextureAlphaMod(SDL_Renderer * renderer,
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                                 SDL_Texture * texture);
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static int GL_SetTextureBlendMode(SDL_Renderer * renderer,
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                                  SDL_Texture * texture);
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static int GL_SetTextureScaleMode(SDL_Renderer * renderer,
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                                  SDL_Texture * texture);
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static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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                            const SDL_Rect * rect, const void *pixels,
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                            int pitch);
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static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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                          const SDL_Rect * rect, int markDirty, void **pixels,
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                          int *pitch);
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static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static void GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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                            int numrects, const SDL_Rect * rects);
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static int GL_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
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                         Uint8 a, const SDL_Rect * rect);
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static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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                         const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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static void GL_RenderPresent(SDL_Renderer * renderer);
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static void GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static void GL_DestroyRenderer(SDL_Renderer * renderer);
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SDL_RenderDriver GL_RenderDriver = {
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    GL_CreateRenderer,
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    {
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     "opengl",
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     (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD |
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      SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED),
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     (SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_COLOR |
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      SDL_TEXTUREMODULATE_ALPHA),
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     (SDL_TEXTUREBLENDMODE_NONE | SDL_TEXTUREBLENDMODE_MASK |
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      SDL_TEXTUREBLENDMODE_BLEND | SDL_TEXTUREBLENDMODE_ADD |
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      SDL_TEXTUREBLENDMODE_MOD),
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     (SDL_TEXTURESCALEMODE_NONE | SDL_TEXTURESCALEMODE_FAST |
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      SDL_TEXTURESCALEMODE_SLOW),
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     16,
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     {
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      SDL_PIXELFORMAT_INDEX1LSB,
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      SDL_PIXELFORMAT_INDEX1MSB,
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      SDL_PIXELFORMAT_INDEX8,
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      SDL_PIXELFORMAT_RGB332,
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      SDL_PIXELFORMAT_RGB444,
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      SDL_PIXELFORMAT_RGB555,
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      SDL_PIXELFORMAT_ARGB4444,
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      SDL_PIXELFORMAT_ARGB1555,
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      SDL_PIXELFORMAT_RGB565,
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      SDL_PIXELFORMAT_RGB24,
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      SDL_PIXELFORMAT_BGR24,
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      SDL_PIXELFORMAT_RGB888,
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      SDL_PIXELFORMAT_BGR888,
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      SDL_PIXELFORMAT_ARGB8888,
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      SDL_PIXELFORMAT_ABGR8888,
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      SDL_PIXELFORMAT_ARGB2101010},
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     0,
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     0}
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};
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typedef struct
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{
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    SDL_GLContext context;
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    SDL_bool updateSize;
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    SDL_bool GL_EXT_paletted_texture_supported;
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    SDL_bool GL_ARB_texture_rectangle_supported;
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    int blendMode;
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    int scaleMode;
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    /* OpenGL functions */
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#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params;
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#include "SDL_glfuncs.h"
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#undef SDL_PROC
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    PFNGLCOLORTABLEEXTPROC glColorTableEXT;
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} GL_RenderData;
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typedef struct
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{
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    GLuint texture;
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    GLenum type;
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    GLfloat texw;
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    GLfloat texh;
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    GLenum format;
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   133
    GLenum formattype;
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   134
    Uint8 *palette;
1918
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   135
    void *pixels;
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   136
    int pitch;
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   137
    SDL_DirtyRectList dirty;
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   138
} GL_TextureData;
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   139
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   140
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   141
static void
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   142
GL_SetError(const char *prefix, GLenum result)
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   143
{
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   144
    const char *error;
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   145
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   146
    switch (result) {
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   147
    case GL_NO_ERROR:
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   148
        error = "GL_NO_ERROR";
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   149
        break;
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   150
    case GL_INVALID_ENUM:
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   151
        error = "GL_INVALID_ENUM";
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   152
        break;
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   153
    case GL_INVALID_VALUE:
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   154
        error = "GL_INVALID_VALUE";
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   155
        break;
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   156
    case GL_INVALID_OPERATION:
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   157
        error = "GL_INVALID_OPERATION";
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   158
        break;
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diff changeset
   159
    case GL_STACK_OVERFLOW:
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   160
        error = "GL_STACK_OVERFLOW";
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   161
        break;
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   162
    case GL_STACK_UNDERFLOW:
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   163
        error = "GL_STACK_UNDERFLOW";
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   164
        break;
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   165
    case GL_OUT_OF_MEMORY:
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   166
        error = "GL_OUT_OF_MEMORY";
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   167
        break;
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diff changeset
   168
    case GL_TABLE_TOO_LARGE:
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   169
        error = "GL_TABLE_TOO_LARGE";
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   170
        break;
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   171
    default:
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   172
        error = "UNKNOWN";
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   173
        break;
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diff changeset
   174
    }
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
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   175
    SDL_SetError("%s: %s", prefix, error);
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diff changeset
   176
}
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
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   177
1927
aeb8263d377a OpenGL renderer is feature complete!
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   178
static int
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   179
GL_LoadFunctions(GL_RenderData * data)
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   180
{
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   181
#if defined(__QNXNTO__) && (_NTO_VERSION < 630)
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   182
#define __SDL_NOGETPROCADDR__
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   183
#elif defined(__MINT__)
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   184
#define __SDL_NOGETPROCADDR__
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   185
#endif
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   186
#ifdef __SDL_NOGETPROCADDR__
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   187
#define SDL_PROC(ret,func,params) data->func=func;
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   188
#else
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   189
#define SDL_PROC(ret,func,params) \
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diff changeset
   190
    do { \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   191
        data->func = SDL_GL_GetProcAddress(#func); \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   192
        if ( ! data->func ) { \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   193
            SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   194
            return -1; \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   195
        } \
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   196
    } while ( 0 );
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   197
#endif /* __SDL_NOGETPROCADDR__ */
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   198
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   199
#include "SDL_glfuncs.h"
aeb8263d377a OpenGL renderer is feature complete!
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   200
#undef SDL_PROC
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   201
    return 0;
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   202
}
aeb8263d377a OpenGL renderer is feature complete!
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diff changeset
   203
1918
092bd3a019c5 Starting on the OpenGL renderer...
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   204
void
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   205
GL_AddRenderDriver(_THIS)
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   206
{
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   207
    if (_this->GL_CreateContext) {
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   208
        SDL_AddRenderDriver(0, &GL_RenderDriver);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   209
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   210
}
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   211
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   212
SDL_Renderer *
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   213
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   214
{
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   215
    SDL_Renderer *renderer;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   216
    GL_RenderData *data;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   217
    GLint value;
1974
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   218
    int doublebuffer;
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   219
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   220
    /* Render directly to the window, unless we're compositing */
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   221
#ifndef __MACOSX__
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   222
    if (flags & SDL_RENDERER_SINGLEBUFFER) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   223
        SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 0);
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   224
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   225
#endif
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   226
    if (!(window->flags & SDL_WINDOW_OPENGL)) {
1928
861bc36f0ab3 Fixed crash with multiple windows
Sam Lantinga <slouken@libsdl.org>
parents: 1927
diff changeset
   227
        if (SDL_RecreateWindow(window, window->flags | SDL_WINDOW_OPENGL) < 0) {
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   228
            return NULL;
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   229
        }
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   230
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   231
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   232
    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   233
    if (!renderer) {
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   234
        SDL_OutOfMemory();
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   235
        return NULL;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   236
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   237
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   238
    data = (GL_RenderData *) SDL_calloc(1, sizeof(*data));
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   239
    if (!data) {
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   240
        GL_DestroyRenderer(renderer);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   241
        SDL_OutOfMemory();
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   242
        return NULL;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   243
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   244
1923
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   245
    renderer->ActivateRenderer = GL_ActivateRenderer;
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   246
    renderer->DisplayModeChanged = GL_DisplayModeChanged;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   247
    renderer->CreateTexture = GL_CreateTexture;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   248
    renderer->SetTexturePalette = GL_SetTexturePalette;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   249
    renderer->GetTexturePalette = GL_GetTexturePalette;
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   250
    renderer->SetTextureColorMod = GL_SetTextureColorMod;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   251
    renderer->SetTextureAlphaMod = GL_SetTextureAlphaMod;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   252
    renderer->SetTextureBlendMode = GL_SetTextureBlendMode;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   253
    renderer->SetTextureScaleMode = GL_SetTextureScaleMode;
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   254
    renderer->UpdateTexture = GL_UpdateTexture;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   255
    renderer->LockTexture = GL_LockTexture;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   256
    renderer->UnlockTexture = GL_UnlockTexture;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   257
    renderer->DirtyTexture = GL_DirtyTexture;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   258
    renderer->RenderFill = GL_RenderFill;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   259
    renderer->RenderCopy = GL_RenderCopy;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   260
    renderer->RenderPresent = GL_RenderPresent;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   261
    renderer->DestroyTexture = GL_DestroyTexture;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   262
    renderer->DestroyRenderer = GL_DestroyRenderer;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   263
    renderer->info = GL_RenderDriver.info;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   264
    renderer->window = window->id;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   265
    renderer->driverdata = data;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   266
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   267
    renderer->info.flags =
1965
a788656ca29a SDL constants are all uppercase.
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parents: 1952
diff changeset
   268
        (SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED);
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   269
1927
aeb8263d377a OpenGL renderer is feature complete!
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parents: 1926
diff changeset
   270
    if (GL_LoadFunctions(data) < 0) {
aeb8263d377a OpenGL renderer is feature complete!
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parents: 1926
diff changeset
   271
        GL_DestroyRenderer(renderer);
aeb8263d377a OpenGL renderer is feature complete!
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parents: 1926
diff changeset
   272
        return NULL;
aeb8263d377a OpenGL renderer is feature complete!
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parents: 1926
diff changeset
   273
    }
aeb8263d377a OpenGL renderer is feature complete!
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parents: 1926
diff changeset
   274
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   275
    data->context = SDL_GL_CreateContext(window->id);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   276
    if (!data->context) {
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   277
        GL_DestroyRenderer(renderer);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   278
        return NULL;
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   279
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   280
    if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   281
        GL_DestroyRenderer(renderer);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   282
        return NULL;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   283
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   284
1965
a788656ca29a SDL constants are all uppercase.
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parents: 1952
diff changeset
   285
    if (flags & SDL_RENDERER_PRESENTVSYNC) {
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   286
        SDL_GL_SetSwapInterval(1);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   287
    } else {
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   288
        SDL_GL_SetSwapInterval(0);
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   289
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   290
    if (SDL_GL_GetSwapInterval() > 0) {
1965
a788656ca29a SDL constants are all uppercase.
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parents: 1952
diff changeset
   291
        renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
1918
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   292
    }
092bd3a019c5 Starting on the OpenGL renderer...
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parents:
diff changeset
   293
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   294
    if (SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &doublebuffer) == 0) {
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   295
        if (!doublebuffer) {
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   296
            renderer->info.flags |= SDL_RENDERER_SINGLEBUFFER;
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   297
        }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   298
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   299
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   300
    data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   301
    renderer->info.max_texture_width = value;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   302
    data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   303
    renderer->info.max_texture_height = value;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   304
1926
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   305
    if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle")
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   306
        || SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) {
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   307
        data->GL_ARB_texture_rectangle_supported = SDL_TRUE;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   308
    }
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   309
    if (SDL_GL_ExtensionSupported("GL_EXT_paletted_texture")) {
70deaf574153 Added paletted OpenGL texture support.
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parents: 1970
diff changeset
   310
        data->GL_EXT_paletted_texture_supported = SDL_TRUE;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   311
        data->glColorTableEXT =
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   312
            (PFNGLCOLORTABLEEXTPROC) SDL_GL_GetProcAddress("glColorTableEXT");
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   313
    } else {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   314
        /* Don't advertise support for 8-bit indexed texture format */
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   315
        Uint32 i, j;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   316
        SDL_RendererInfo *info = &renderer->info;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   317
        for (i = 0, j = 0; i < info->num_texture_formats; ++i) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   318
            if (info->texture_formats[i] != SDL_PIXELFORMAT_INDEX8) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   319
                info->texture_formats[j++] = info->texture_formats[i];
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   320
            }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   321
        }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   322
        --info->num_texture_formats;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   323
    }
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   324
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   325
    /* Set up parameters for rendering */
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   326
    data->blendMode = -1;
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   327
    data->scaleMode = -1;
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   328
    data->glDisable(GL_DEPTH_TEST);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   329
    data->glDisable(GL_CULL_FACE);
1926
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   330
    if (data->GL_ARB_texture_rectangle_supported) {
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   331
        data->glEnable(GL_TEXTURE_RECTANGLE_ARB);
1926
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   332
    } else {
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   333
        data->glEnable(GL_TEXTURE_2D);
1926
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   334
    }
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   335
    data->updateSize = SDL_TRUE;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   336
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   337
    return renderer;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   338
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   339
1923
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   340
static int
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   341
GL_ActivateRenderer(SDL_Renderer * renderer)
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   342
{
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   343
    GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   344
    SDL_Window *window = SDL_GetWindowFromID(renderer->window);
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   345
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   346
    if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   347
        return -1;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   348
    }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   349
    if (data->updateSize) {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   350
        data->glMatrixMode(GL_PROJECTION);
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   351
        data->glLoadIdentity();
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   352
        data->glMatrixMode(GL_MODELVIEW);
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   353
        data->glLoadIdentity();
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   354
        data->glViewport(0, 0, window->w, window->h);
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   355
        data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0,
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   356
                      0.0, 1.0);
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   357
        data->updateSize = SDL_FALSE;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   358
    }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   359
    return 0;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   360
}
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   361
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   362
static int
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   363
GL_DisplayModeChanged(SDL_Renderer * renderer)
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   364
{
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   365
    GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   366
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   367
    data->updateSize = SDL_TRUE;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
   368
    return 0;
1923
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   369
}
d4572b97b08f Switch OpenGL contexts when switching render contexts.
Sam Lantinga <slouken@libsdl.org>
parents: 1922
diff changeset
   370
1922
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   371
static __inline__ int
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   372
power_of_2(int input)
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   373
{
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   374
    int value = 1;
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   375
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   376
    while (value < input) {
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   377
        value <<= 1;
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   378
    }
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   379
    return value;
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   380
}
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   381
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   382
static int
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   383
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   384
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   385
    GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   386
    SDL_Window *window = SDL_GetWindowFromID(renderer->window);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   387
    GL_TextureData *data;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   388
    GLint internalFormat;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   389
    GLenum format, type;
1922
4905cac7a4bd Fixed OpenGL blend modes, added power of 2 texture code
Sam Lantinga <slouken@libsdl.org>
parents: 1921
diff changeset
   390
    int texture_w, texture_h;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   391
    GLenum result;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   392
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   393
    switch (texture->format) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   394
    case SDL_PIXELFORMAT_INDEX1LSB:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   395
    case SDL_PIXELFORMAT_INDEX1MSB:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   396
        internalFormat = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   397
        format = GL_COLOR_INDEX;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   398
        type = GL_BITMAP;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   399
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   400
    case SDL_PIXELFORMAT_INDEX8:
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   401
        if (!renderdata->GL_EXT_paletted_texture_supported) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   402
            SDL_SetError("Unsupported texture format");
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   403
            return -1;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   404
        }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   405
        internalFormat = GL_COLOR_INDEX8_EXT;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   406
        format = GL_COLOR_INDEX;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   407
        type = GL_UNSIGNED_BYTE;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   408
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   409
    case SDL_PIXELFORMAT_RGB332:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   410
        internalFormat = GL_R3_G3_B2;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   411
        format = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   412
        type = GL_UNSIGNED_BYTE_3_3_2;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   413
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   414
    case SDL_PIXELFORMAT_RGB444:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   415
        internalFormat = GL_RGB4;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   416
        format = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   417
        type = GL_UNSIGNED_SHORT_4_4_4_4;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   418
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   419
    case SDL_PIXELFORMAT_RGB555:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   420
        internalFormat = GL_RGB5;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   421
        format = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   422
        type = GL_UNSIGNED_SHORT_5_5_5_1;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   423
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   424
    case SDL_PIXELFORMAT_ARGB4444:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   425
        internalFormat = GL_RGBA4;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   426
        format = GL_BGRA;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   427
        type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   428
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   429
    case SDL_PIXELFORMAT_ARGB1555:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   430
        internalFormat = GL_RGB5_A1;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   431
        format = GL_BGRA;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   432
        type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   433
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   434
    case SDL_PIXELFORMAT_RGB565:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   435
        internalFormat = GL_RGB8;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   436
        format = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   437
        type = GL_UNSIGNED_SHORT_5_6_5;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   438
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   439
    case SDL_PIXELFORMAT_RGB24:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   440
        internalFormat = GL_RGB8;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   441
        format = GL_RGB;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   442
        type = GL_UNSIGNED_BYTE;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   443
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   444
    case SDL_PIXELFORMAT_RGB888:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   445
        internalFormat = GL_RGB8;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   446
        format = GL_BGRA;
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   447
        type = GL_UNSIGNED_BYTE;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   448
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   449
    case SDL_PIXELFORMAT_BGR24:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   450
        internalFormat = GL_RGB8;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   451
        format = GL_BGR;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   452
        type = GL_UNSIGNED_BYTE;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   453
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   454
    case SDL_PIXELFORMAT_BGR888:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   455
        internalFormat = GL_RGB8;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   456
        format = GL_RGBA;
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   457
        type = GL_UNSIGNED_BYTE;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   458
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   459
    case SDL_PIXELFORMAT_ARGB8888:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   460
        internalFormat = GL_RGBA8;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   461
        format = GL_BGRA;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   462
        type = GL_UNSIGNED_BYTE;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   463
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   464
    case SDL_PIXELFORMAT_ABGR8888:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   465
        internalFormat = GL_RGBA8;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   466
        format = GL_RGBA;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   467
        type = GL_UNSIGNED_BYTE;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   468
        break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   469
    case SDL_PIXELFORMAT_ARGB2101010:
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   470
        internalFormat = GL_RGB10_A2;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   471
        format = GL_BGRA;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   472
        type = GL_UNSIGNED_INT_2_10_10_10_REV;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   473
        break;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   474
    default:
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   475
        SDL_SetError("Unsupported texture format");
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   476
        return -1;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   477
    }
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   478
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   479
    data = (GL_TextureData *) SDL_calloc(1, sizeof(*data));
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   480
    if (!data) {
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   481
        SDL_OutOfMemory();
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   482
        return -1;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   483
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   484
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   485
    if (texture->format == SDL_PIXELFORMAT_INDEX8) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   486
        data->palette = (Uint8 *) SDL_malloc(3 * 256 * sizeof(Uint8));
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   487
        if (!data->palette) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   488
            SDL_OutOfMemory();
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   489
            SDL_free(data);
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   490
            return -1;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   491
        }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   492
        SDL_memset(data->palette, 0xFF, 3 * 256 * sizeof(Uint8));
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   493
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   494
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   495
    texture->driverdata = data;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   496
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   497
    renderdata->glGetError();
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   498
    renderdata->glGenTextures(1, &data->texture);
1926
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   499
    if (renderdata->GL_ARB_texture_rectangle_supported) {
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   500
        data->type = GL_TEXTURE_RECTANGLE_ARB;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   501
        texture_w = texture->w;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   502
        texture_h = texture->h;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   503
        data->texw = (GLfloat) texture->w;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   504
        data->texh = (GLfloat) texture->h;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   505
    } else {
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   506
        data->type = GL_TEXTURE_2D;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   507
        texture_w = power_of_2(texture->w);
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   508
        texture_h = power_of_2(texture->h);
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   509
        data->texw = (GLfloat) texture->w / texture_w;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   510
        data->texh = (GLfloat) texture->h / texture_h;
307355678142 Added SDL_GL_ExtensionSupported()
Sam Lantinga <slouken@libsdl.org>
parents: 1924
diff changeset
   511
    }
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   512
    data->format = format;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   513
    data->formattype = type;
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   514
    renderdata->glBindTexture(data->type, data->texture);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   515
    renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   516
                             texture_h, 0, format, type, NULL);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   517
    result = renderdata->glGetError();
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   518
    if (result != GL_NO_ERROR) {
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   519
        GL_SetError("glTexImage2D()", result);
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   520
        return -1;
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   521
    }
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   522
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   523
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   524
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   525
static int
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   526
GL_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   527
                     const SDL_Color * colors, int firstcolor, int ncolors)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   528
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   529
    GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   530
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   531
    Uint8 *palette;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   532
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   533
    if (!data->palette) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   534
        SDL_SetError("Texture doesn't have a palette");
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   535
        return -1;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   536
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   537
    palette = data->palette + firstcolor * 3;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   538
    while (ncolors--) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   539
        *palette++ = colors->r;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   540
        *palette++ = colors->g;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   541
        *palette++ = colors->b;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   542
        ++colors;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   543
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   544
    renderdata->glBindTexture(data->type, data->texture);
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   545
    renderdata->glColorTableEXT(data->type, GL_RGB8, 256, GL_RGB,
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   546
                                GL_UNSIGNED_BYTE, data->palette);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   547
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   548
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   549
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   550
static int
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   551
GL_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   552
                     SDL_Color * colors, int firstcolor, int ncolors)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   553
{
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   554
    GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   555
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   556
    Uint8 *palette;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   557
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   558
    if (!data->palette) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   559
        SDL_SetError("Texture doesn't have a palette");
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   560
        return -1;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   561
    }
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   562
    palette = data->palette + firstcolor * 3;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   563
    while (ncolors--) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   564
        colors->r = *palette++;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   565
        colors->g = *palette++;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   566
        colors->b = *palette++;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   567
        colors->unused = SDL_ALPHA_OPAQUE;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   568
        ++colors;
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   569
    }
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   570
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   571
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   572
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   573
static void
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   574
SetupTextureUpdate(GL_RenderData * renderdata, SDL_Texture * texture,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   575
                   int pitch)
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   576
{
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   577
    if (texture->format == SDL_PIXELFORMAT_INDEX1LSB) {
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   578
        renderdata->glPixelStorei(GL_UNPACK_LSB_FIRST, 1);
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   579
    } else if (texture->format == SDL_PIXELFORMAT_INDEX1MSB) {
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   580
        renderdata->glPixelStorei(GL_UNPACK_LSB_FIRST, 0);
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   581
    }
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   582
    renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   583
    renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   584
                              pitch / SDL_BYTESPERPIXEL(texture->format));
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   585
}
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   586
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   587
static int
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   588
GL_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   589
{
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   590
    return -1;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   591
}
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   592
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   593
static int
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   594
GL_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   595
{
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   596
    return -1;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   597
}
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   598
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   599
static int
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   600
GL_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   601
{
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   602
    switch (texture->blendMode) {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   603
    case SDL_TEXTUREBLENDMODE_NONE:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   604
    case SDL_TEXTUREBLENDMODE_MASK:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   605
    case SDL_TEXTUREBLENDMODE_BLEND:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   606
    case SDL_TEXTUREBLENDMODE_ADD:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   607
    case SDL_TEXTUREBLENDMODE_MOD:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   608
        return 0;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   609
    default:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   610
        SDL_Unsupported();
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   611
        texture->blendMode = SDL_TEXTUREBLENDMODE_NONE;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   612
        return -1;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   613
    }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   614
}
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   615
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   616
static int
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   617
GL_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   618
{
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   619
    switch (texture->scaleMode) {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   620
    case SDL_TEXTURESCALEMODE_NONE:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   621
    case SDL_TEXTURESCALEMODE_FAST:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   622
    case SDL_TEXTURESCALEMODE_SLOW:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   623
        return 0;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   624
    case SDL_TEXTURESCALEMODE_BEST:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   625
        SDL_Unsupported();
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   626
        texture->scaleMode = SDL_TEXTURESCALEMODE_SLOW;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   627
        return -1;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   628
    default:
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   629
        SDL_Unsupported();
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   630
        texture->scaleMode = SDL_TEXTURESCALEMODE_NONE;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   631
        return -1;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   632
    }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   633
}
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   634
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   635
static int
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   636
GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   637
                 const SDL_Rect * rect, const void *pixels, int pitch)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   638
{
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   639
    GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   640
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   641
    GLenum result;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   642
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   643
    renderdata->glGetError();
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   644
    SetupTextureUpdate(renderdata, texture, pitch);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   645
    renderdata->glBindTexture(data->type, data->texture);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   646
    renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   647
                                rect->h, data->format, data->formattype,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   648
                                pixels);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   649
    result = renderdata->glGetError();
1924
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   650
    if (result != GL_NO_ERROR) {
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   651
        GL_SetError("glTexSubImage2D()", result);
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   652
        return -1;
69217fdd2c0a If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.
Sam Lantinga <slouken@libsdl.org>
parents: 1923
diff changeset
   653
    }
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   654
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   655
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   656
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   657
static int
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   658
GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   659
               const SDL_Rect * rect, int markDirty, void **pixels,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   660
               int *pitch)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   661
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   662
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   663
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   664
    if (!data->pixels) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   665
        data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   666
        data->pixels = SDL_malloc(texture->h * data->pitch);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   667
        if (!data->pixels) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   668
            SDL_OutOfMemory();
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   669
            return -1;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   670
        }
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   671
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   672
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   673
    if (markDirty) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   674
        SDL_AddDirtyRect(&data->dirty, rect);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   675
    }
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   676
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   677
    *pixels =
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   678
        (void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   679
                  rect->x * SDL_BYTESPERPIXEL(texture->format));
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   680
    *pitch = data->pitch;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   681
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   682
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   683
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   684
static void
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   685
GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   686
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   687
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   688
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   689
static void
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   690
GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   691
                const SDL_Rect * rects)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   692
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   693
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   694
    int i;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   695
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   696
    for (i = 0; i < numrects; ++i) {
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   697
        SDL_AddDirtyRect(&data->dirty, &rects[i]);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   698
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   699
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   700
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   701
static int
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   702
GL_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a,
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   703
              const SDL_Rect * rect)
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   704
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   705
    GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   706
    SDL_Window *window = SDL_GetWindowFromID(renderer->window);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   707
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   708
    data->glClearColor((GLclampf) r * inv255f, (GLclampf) g * inv255f,
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   709
                       (GLclampf) b * inv255f, (GLclampf) a * inv255f);
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   710
    data->glViewport(rect->x, window->h - rect->y, rect->w, rect->h);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   711
    data->glClear(GL_COLOR_BUFFER_BIT);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   712
    data->glViewport(0, 0, window->w, window->h);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   713
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   714
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   715
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   716
static int
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   717
GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   718
              const SDL_Rect * srcrect, const SDL_Rect * dstrect)
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   719
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   720
    GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   721
    GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   722
    int minx, miny, maxx, maxy;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   723
    GLfloat minu, maxu, minv, maxv;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   724
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   725
    if (texturedata->dirty.count > 0) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   726
        SDL_DirtyRect *dirty;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   727
        void *pixels;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   728
        int bpp = SDL_BYTESPERPIXEL(texture->format);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   729
        int pitch = texturedata->pitch;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   730
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   731
        SetupTextureUpdate(data, texture, pitch);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   732
        data->glBindTexture(texturedata->type, texturedata->texture);
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   733
        for (dirty = texturedata->dirty.list; dirty; dirty = dirty->next) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   734
            SDL_Rect *rect = &dirty->rect;
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   735
            pixels =
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   736
                (void *) ((Uint8 *) texturedata->pixels + rect->y * pitch +
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   737
                          rect->x * bpp);
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   738
            data->glTexSubImage2D(texturedata->type, 0, rect->x, rect->y,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   739
                                  rect->w, rect->h, texturedata->format,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   740
                                  texturedata->formattype, pixels);
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   741
        }
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   742
        SDL_ClearDirtyRects(&texturedata->dirty);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   743
    }
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   744
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   745
    minx = dstrect->x;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   746
    miny = dstrect->y;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   747
    maxx = dstrect->x + dstrect->w;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   748
    maxy = dstrect->y + dstrect->h;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   749
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   750
    minu = (GLfloat) srcrect->x / texture->w;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   751
    minu *= texturedata->texw;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   752
    maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   753
    maxu *= texturedata->texw;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   754
    minv = (GLfloat) srcrect->y / texture->h;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   755
    minv *= texturedata->texh;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   756
    maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   757
    maxv *= texturedata->texh;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   758
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   759
    data->glBindTexture(texturedata->type, texturedata->texture);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   760
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   761
    if (texture->modMode) {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   762
        data->glColor4f((GLfloat) texture->r * inv255f,
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   763
                        (GLfloat) texture->g * inv255f,
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   764
                        (GLfloat) texture->b * inv255f,
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   765
                        (GLfloat) texture->a * inv255f);
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   766
    } else {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   767
        data->glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   768
    }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   769
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   770
    if (texture->blendMode != data->blendMode) {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   771
        switch (texture->blendMode) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   772
        case SDL_TEXTUREBLENDMODE_NONE:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   773
            data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   774
            data->glDisable(GL_BLEND);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   775
            break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   776
        case SDL_TEXTUREBLENDMODE_MASK:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   777
        case SDL_TEXTUREBLENDMODE_BLEND:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   778
            data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   779
            data->glEnable(GL_BLEND);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   780
            data->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   781
            break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   782
        case SDL_TEXTUREBLENDMODE_ADD:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   783
            data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   784
            data->glEnable(GL_BLEND);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   785
            data->glBlendFunc(GL_SRC_ALPHA, GL_ONE);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   786
            break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   787
        case SDL_TEXTUREBLENDMODE_MOD:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   788
            data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   789
            data->glEnable(GL_BLEND);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   790
            data->glBlendFunc(GL_ZERO, GL_SRC_COLOR);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   791
            break;
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   792
        }
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   793
        data->blendMode = texture->blendMode;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   794
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   795
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   796
    if (texture->scaleMode != data->scaleMode) {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   797
        switch (texture->scaleMode) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   798
        case SDL_TEXTURESCALEMODE_NONE:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   799
        case SDL_TEXTURESCALEMODE_FAST:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   800
            data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   801
                                  GL_NEAREST);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   802
            data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   803
                                  GL_NEAREST);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   804
            break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   805
        case SDL_TEXTURESCALEMODE_SLOW:
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   806
        case SDL_TEXTURESCALEMODE_BEST:
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   807
            data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   808
                                  GL_LINEAR);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   809
            data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER,
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   810
                                  GL_LINEAR);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   811
            break;
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   812
        }
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1975
diff changeset
   813
        data->scaleMode = texture->scaleMode;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   814
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   815
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   816
    data->glBegin(GL_TRIANGLE_STRIP);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   817
    data->glTexCoord2f(minu, minv);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   818
    data->glVertex2i(minx, miny);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   819
    data->glTexCoord2f(maxu, minv);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   820
    data->glVertex2i(maxx, miny);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   821
    data->glTexCoord2f(minu, maxv);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   822
    data->glVertex2i(minx, maxy);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   823
    data->glTexCoord2f(maxu, maxv);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   824
    data->glVertex2i(maxx, maxy);
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   825
    data->glEnd();
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   826
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   827
    return 0;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   828
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   829
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   830
static void
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   831
GL_RenderPresent(SDL_Renderer * renderer)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   832
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   833
    SDL_GL_SwapWindow(renderer->window);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   834
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   835
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   836
static void
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   837
GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   838
{
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   839
    GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   840
    GL_TextureData *data = (GL_TextureData *) texture->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   841
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   842
    if (!data) {
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   843
        return;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   844
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   845
    if (data->texture) {
1927
aeb8263d377a OpenGL renderer is feature complete!
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   846
        renderdata->glDeleteTextures(1, &data->texture);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   847
    }
1974
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   848
    if (data->palette) {
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   849
        SDL_free(data->palette);
70deaf574153 Added paletted OpenGL texture support.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
   850
    }
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   851
    if (data->pixels) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   852
        SDL_free(data->pixels);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   853
    }
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   854
    SDL_FreeDirtyRects(&data->dirty);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   855
    SDL_free(data);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   856
    texture->driverdata = NULL;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   857
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   858
1975
ccef0d0c40c6 Added resize support for GDI and Direct3D renderers
Sam Lantinga <slouken@libsdl.org>
parents: 1974
diff changeset
   859
static void
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   860
GL_DestroyRenderer(SDL_Renderer * renderer)
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   861
{
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   862
    GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   863
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   864
    if (data) {
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   865
        if (data->context) {
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   866
            SDL_GL_MakeCurrent(0, NULL);
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1919
diff changeset
   867
            SDL_GL_DeleteContext(data->context);
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   868
        }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   869
        SDL_free(data);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   870
    }
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   871
    SDL_free(renderer);
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   872
}
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   873
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1928
diff changeset
   874
#endif /* SDL_VIDEO_RENDER_OGL */
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   875
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   876
/* vi: set ts=4 sw=4 expandtab: */