src/render/SDL_sysrender.h
author Sam Lantinga <slouken@libsdl.org>
Thu, 03 Feb 2011 00:19:40 -0800
changeset 5156 307ccc9c135e
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child 5157 657543cc92f9
permissions -rw-r--r--
Made it possible to create a texture of any format, even if not supported by the renderer. This allows me to reduce the set of formats supported by the renderers to the most optimal set, for a nice speed boost.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2010 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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#ifndef _SDL_sysrender_h
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#define _SDL_sysrender_h
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#include "SDL_render.h"
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#include "SDL_events.h"
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#include "SDL_yuv_sw_c.h"
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/* The SDL 2D rendering system */
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typedef struct SDL_RenderDriver SDL_RenderDriver;
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/* Define the SDL texture structure */
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struct SDL_Texture
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{
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    const void *magic;
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    Uint32 format;              /**< The pixel format of the texture */
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    int access;                 /**< SDL_TextureAccess */
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    int w;                      /**< The width of the texture */
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    int h;                      /**< The height of the texture */
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    int modMode;                /**< The texture modulation mode */
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    SDL_BlendMode blendMode;    /**< The texture blend mode */
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    Uint8 r, g, b, a;           /**< Texture modulation values */
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    SDL_Renderer *renderer;
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    /* Support for formats not supported directly by the renderer */
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    SDL_Texture *native;
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    SDL_SW_YUVTexture *yuv;
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    void *pixels;
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    int pitch;
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    SDL_Rect locked_rect;
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    void *driverdata;           /**< Driver specific texture representation */
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    SDL_Texture *prev;
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    SDL_Texture *next;
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};
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/* Define the SDL renderer structure */
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struct SDL_Renderer
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{
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    const void *magic;
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    void (*WindowEvent) (SDL_Renderer * renderer, const SDL_WindowEvent *event);
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    int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    int (*SetTextureColorMod) (SDL_Renderer * renderer,
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                               SDL_Texture * texture);
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    int (*SetTextureAlphaMod) (SDL_Renderer * renderer,
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                               SDL_Texture * texture);
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    int (*SetTextureBlendMode) (SDL_Renderer * renderer,
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                                SDL_Texture * texture);
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    int (*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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    int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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                        const SDL_Rect * rect, void **pixels, int *pitch);
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    void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    int (*RenderClear) (SDL_Renderer * renderer);
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    int (*RenderDrawPoints) (SDL_Renderer * renderer, const SDL_Point * points,
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                             int count);
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    int (*RenderDrawLines) (SDL_Renderer * renderer, const SDL_Point * points,
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                            int count);
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    int (*RenderFillRects) (SDL_Renderer * renderer, const SDL_Rect ** rects,
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                            int count);
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    int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
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                       const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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    int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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                             Uint32 format, void * pixels, int pitch);
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    int (*RenderWritePixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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                              Uint32 format, const void * pixels, int pitch);
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    void (*RenderPresent) (SDL_Renderer * renderer);
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    void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    void (*DestroyRenderer) (SDL_Renderer * renderer);
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    /* The current renderer info */
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    SDL_RendererInfo info;
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    /* The window associated with the renderer */
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    SDL_Window *window;
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    /* The list of textures */
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    SDL_Texture *textures;
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    Uint8 r, g, b, a;                   /**< Color for drawing operations values */
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    SDL_BlendMode blendMode;            /**< The drawing blend mode */
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    void *driverdata;
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};
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/* Define the SDL render driver structure */
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struct SDL_RenderDriver
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{
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    SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
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    /* Info about the renderer capabilities */
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    SDL_RendererInfo info;
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};
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#if SDL_VIDEO_RENDER_D3D
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extern SDL_RenderDriver D3D_RenderDriver;
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#endif
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#if SDL_VIDEO_RENDER_OGL
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extern SDL_RenderDriver GL_RenderDriver;
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#endif
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#if SDL_VIDEO_RENDER_OGL_ES
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extern SDL_RenderDriver GL_ES_RenderDriver;
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#endif
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extern SDL_RenderDriver SW_RenderDriver;
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#endif /* _SDL_sysrender_h */
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/* vi: set ts=4 sw=4 expandtab: */