src/video/win32/SDL_win32opengl.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 12 Jul 2007 06:31:36 +0000
changeset 2178 114a541cfae2
parent 2150 abbe2c1dcf0a
child 2180 5ed37b16c1a7
permissions -rw-r--r--
Creating a context makes it current, per the documentation. Applied a variant of the multi-card OpenGL fix from SDL 1.2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     1
/*
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     2
    SDL - Simple DirectMedia Layer
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     3
    Copyright (C) 1997-2006 Sam Lantinga
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     4
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     5
    This library is free software; you can redistribute it and/or
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     6
    modify it under the terms of the GNU Lesser General Public
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     7
    License as published by the Free Software Foundation; either
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     8
    version 2.1 of the License, or (at your option) any later version.
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     9
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    10
    This library is distributed in the hope that it will be useful,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    13
    Lesser General Public License for more details.
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    14
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    15
    You should have received a copy of the GNU Lesser General Public
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    16
    License along with this library; if not, write to the Free Software
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    17
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    18
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    19
    Sam Lantinga
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    20
    slouken@libsdl.org
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    21
*/
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    22
#include "SDL_config.h"
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    23
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    24
#include "SDL_win32video.h"
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    25
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    26
/* WGL implementation of SDL OpenGL support */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    27
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    28
#if SDL_VIDEO_OPENGL_WGL
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    29
#include "SDL_opengl.h"
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    30
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    31
#define DEFAULT_OPENGL "OPENGL32.DLL"
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    32
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    33
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    34
int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    35
WIN_GL_LoadLibrary(_THIS, const char *path)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    36
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    37
    LPTSTR wpath;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    38
    HANDLE handle;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    39
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    40
    if (_this->gl_config.driver_loaded) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    41
        if (path) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    42
            SDL_SetError("OpenGL library already loaded");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    43
            return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    44
        } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    45
            ++_this->gl_config.driver_loaded;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    46
            return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    47
        }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    48
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    49
    if (path == NULL) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    50
        path = SDL_getenv("SDL_OPENGL_LIBRARY");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    51
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    52
    if (path == NULL) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
    53
        path = DEFAULT_OPENGL;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    54
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    55
    wpath = WIN_UTF8ToString(path);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    56
    handle = LoadLibrary(wpath);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    57
    SDL_free(wpath);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    58
    if (!handle) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    59
        char message[1024];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    60
        SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")",
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    61
                     path);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    62
        WIN_SetError(message);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    63
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    64
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    65
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    66
    /* Load function pointers */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    67
    _this->gl_data->wglGetProcAddress = (void *(WINAPI *) (const char *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    68
        GetProcAddress(handle, "wglGetProcAddress");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    69
    _this->gl_data->wglCreateContext = (HGLRC(WINAPI *) (HDC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    70
        GetProcAddress(handle, "wglCreateContext");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    71
    _this->gl_data->wglDeleteContext = (BOOL(WINAPI *) (HGLRC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    72
        GetProcAddress(handle, "wglDeleteContext");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    73
    _this->gl_data->wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    74
        GetProcAddress(handle, "wglMakeCurrent");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    75
    _this->gl_data->wglSwapIntervalEXT = (void (WINAPI *) (int))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    76
        GetProcAddress(handle, "wglSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    77
    _this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *) (void))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    78
        GetProcAddress(handle, "wglGetSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    79
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    80
    if (!_this->gl_data->wglGetProcAddress ||
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    81
        !_this->gl_data->wglCreateContext ||
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    82
        !_this->gl_data->wglDeleteContext ||
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    83
        !_this->gl_data->wglMakeCurrent) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    84
        SDL_SetError("Could not retrieve OpenGL functions");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    85
        FreeLibrary(handle);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    86
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    87
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    88
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    89
    _this->gl_config.dll_handle = handle;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    90
    SDL_strlcpy(_this->gl_config.driver_path, path,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    91
                SDL_arraysize(_this->gl_config.driver_path));
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    92
    _this->gl_config.driver_loaded = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    93
    return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    94
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    95
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    96
void *
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    97
WIN_GL_GetProcAddress(_THIS, const char *proc)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    98
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    99
    void *func;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   100
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   101
    /* This is to pick up extensions */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   102
    func = _this->gl_data->wglGetProcAddress(proc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   103
    if (!func) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   104
        /* This is probably a normal GL function */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   105
        func = GetProcAddress(_this->gl_config.dll_handle, proc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   106
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   107
    return func;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   108
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   109
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   110
static void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   111
WIN_GL_UnloadLibrary(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   112
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   113
    if (_this->gl_config.driver_loaded > 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   114
        if (--_this->gl_config.driver_loaded > 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   115
            return;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   116
        }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   117
        FreeLibrary((HMODULE) _this->gl_config.dll_handle);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   118
        _this->gl_config.dll_handle = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   119
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   120
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   121
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   122
static void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   123
WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   124
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   125
    SDL_zerop(pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   126
    pfd->nSize = sizeof(*pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   127
    pfd->nVersion = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   128
    pfd->dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   129
    if (_this->gl_config.double_buffer) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   130
        pfd->dwFlags |= PFD_DOUBLEBUFFER;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   131
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   132
    if (_this->gl_config.stereo) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   133
        pfd->dwFlags |= PFD_STEREO;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   134
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   135
    pfd->iLayerType = PFD_MAIN_PLANE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   136
    pfd->iPixelType = PFD_TYPE_RGBA;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   137
    pfd->cRedBits = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   138
    pfd->cGreenBits = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   139
    pfd->cBlueBits = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   140
    pfd->cAlphaBits = _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   141
    if (_this->gl_config.buffer_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   142
        pfd->cColorBits =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   143
            _this->gl_config.buffer_size - _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   144
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   145
        pfd->cColorBits = (pfd->cRedBits + pfd->cGreenBits + pfd->cBlueBits);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   146
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   147
    pfd->cAccumRedBits = _this->gl_config.accum_red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   148
    pfd->cAccumGreenBits = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   149
    pfd->cAccumBlueBits = _this->gl_config.accum_blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   150
    pfd->cAccumAlphaBits = _this->gl_config.accum_alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   151
    pfd->cAccumBits =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   152
        (pfd->cAccumRedBits + pfd->cAccumGreenBits + pfd->cAccumBlueBits +
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   153
         pfd->cAccumAlphaBits);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   154
    pfd->cDepthBits = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   155
    pfd->cStencilBits = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   156
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   157
2150
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   158
/* Choose the closest pixel format that meets or exceeds the target.
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   159
   FIXME: Should we weight any particular attribute over any other?
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   160
*/
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   161
static int
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   162
WIN_GL_ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR * target)
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   163
{
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   164
    PIXELFORMATDESCRIPTOR pfd;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   165
    int count, index, best = 0;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   166
    unsigned int dist, best_dist = ~0U;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   167
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   168
    count = DescribePixelFormat(hdc, 1, sizeof(pfd), NULL);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   169
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   170
    for (index = 1; index <= count; index++) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   171
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   172
        if (!DescribePixelFormat(hdc, index, sizeof(pfd), &pfd)) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   173
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   174
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   175
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   176
        if ((pfd.dwFlags & target->dwFlags) != target->dwFlags) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   177
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   178
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   179
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   180
        if (pfd.iLayerType != target->iLayerType) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   181
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   182
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   183
        if (pfd.iPixelType != target->iPixelType) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   184
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   185
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   186
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   187
        dist = 0;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   188
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   189
        if (pfd.cColorBits < target->cColorBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   190
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   191
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   192
            dist += (pfd.cColorBits - target->cColorBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   193
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   194
        if (pfd.cRedBits < target->cRedBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   195
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   196
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   197
            dist += (pfd.cRedBits - target->cRedBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   198
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   199
        if (pfd.cGreenBits < target->cGreenBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   200
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   201
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   202
            dist += (pfd.cGreenBits - target->cGreenBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   203
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   204
        if (pfd.cBlueBits < target->cBlueBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   205
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   206
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   207
            dist += (pfd.cBlueBits - target->cBlueBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   208
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   209
        if (pfd.cAlphaBits < target->cAlphaBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   210
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   211
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   212
            dist += (pfd.cAlphaBits - target->cAlphaBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   213
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   214
        if (pfd.cAccumBits < target->cAccumBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   215
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   216
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   217
            dist += (pfd.cAccumBits - target->cAccumBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   218
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   219
        if (pfd.cAccumRedBits < target->cAccumRedBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   220
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   221
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   222
            dist += (pfd.cAccumRedBits - target->cAccumRedBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   223
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   224
        if (pfd.cAccumGreenBits < target->cAccumGreenBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   225
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   226
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   227
            dist += (pfd.cAccumGreenBits - target->cAccumGreenBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   228
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   229
        if (pfd.cAccumBlueBits < target->cAccumBlueBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   230
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   231
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   232
            dist += (pfd.cAccumBlueBits - target->cAccumBlueBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   233
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   234
        if (pfd.cAccumAlphaBits < target->cAccumAlphaBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   235
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   236
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   237
            dist += (pfd.cAccumAlphaBits - target->cAccumAlphaBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   238
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   239
        if (pfd.cDepthBits < target->cDepthBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   240
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   241
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   242
            dist += (pfd.cDepthBits - target->cDepthBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   243
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   244
        if (pfd.cStencilBits < target->cStencilBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   245
            continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   246
        } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   247
            dist += (pfd.cStencilBits - target->cStencilBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   248
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   249
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   250
        if (dist < best_dist) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   251
            best = index;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   252
            best_dist = dist;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   253
        }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   254
    }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   255
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   256
    return best;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   257
}
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   258
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   259
static SDL_bool
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   260
HasExtension(const char *extension, const char *extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   261
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   262
    const char *start;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   263
    const char *where, *terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   264
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   265
    /* Extension names should not have spaces. */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   266
    where = SDL_strchr(extension, ' ');
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   267
    if (where || *extension == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   268
        return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   269
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   270
    if (!extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   271
        return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   272
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   273
    /* It takes a bit of care to be fool-proof about parsing the
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   274
     * OpenGL extensions string. Don't be fooled by sub-strings,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   275
     * etc. */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   276
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   277
    start = extensions;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   278
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   279
    for (;;) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   280
        where = SDL_strstr(start, extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   281
        if (!where)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   282
            break;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   283
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   284
        terminator = where + SDL_strlen(extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   285
        if (where == start || *(where - 1) == ' ')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   286
            if (*terminator == ' ' || *terminator == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   287
                return SDL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   288
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   289
        start = terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   290
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   291
    return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   292
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   293
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   294
static void
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   295
WIN_GL_InitExtensions(_THIS, HDC hdc)
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   296
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   297
    const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   298
    const char *extensions;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   299
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   300
    wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   301
        _this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   302
    if (wglGetExtensionsStringARB) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   303
        extensions = wglGetExtensionsStringARB(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   304
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   305
        extensions = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   306
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   307
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   308
    /* Check for WGL_ARB_pixel_format */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   309
    _this->gl_data->WGL_ARB_pixel_format = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   310
    if (HasExtension("WGL_ARB_pixel_format", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   311
        _this->gl_data->wglChoosePixelFormatARB = (BOOL(WINAPI *)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   312
                                                   (HDC, const int *,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   313
                                                    const FLOAT *, UINT,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   314
                                                    int *, UINT *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   315
            WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   316
        _this->gl_data->wglGetPixelFormatAttribivARB =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   317
            (BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   318
            WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   319
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   320
        if ((_this->gl_data->wglChoosePixelFormatARB != NULL) &&
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   321
            (_this->gl_data->wglGetPixelFormatAttribivARB != NULL)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   322
            _this->gl_data->WGL_ARB_pixel_format = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   323
        }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   324
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   325
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   326
    /* Check for WGL_EXT_swap_control */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   327
    if (HasExtension("WGL_EXT_swap_control", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   328
        _this->gl_data->wglSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   329
            WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   330
        _this->gl_data->wglGetSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   331
            WIN_GL_GetProcAddress(_this, "wglGetSwapIntervalEXT");
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   332
    } else {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   333
        _this->gl_data->wglSwapIntervalEXT = NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   334
        _this->gl_data->wglGetSwapIntervalEXT = NULL;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   335
    }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   336
}
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   337
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   338
static int
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   339
WIN_GL_ChoosePixelFormatARB(_THIS, int *iAttribs, float *fAttribs)
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   340
{
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   341
    HWND hwnd;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   342
    HDC hdc;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   343
    HGLRC hglrc;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   344
    int pixel_format = 0;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   345
    unsigned int matching;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   346
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   347
    hwnd =
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   348
        CreateWindow(SDL_Appname, SDL_Appname, (WS_POPUP | WS_DISABLED), 0, 0,
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   349
                     10, 10, NULL, NULL, SDL_Instance, NULL);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   350
    WIN_PumpEvents(_this);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   351
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   352
    hdc = GetDC(hwnd);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   353
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   354
    hglrc = _this->gl_data->wglCreateContext(hdc);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   355
    if (hglrc) {
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   356
        _this->gl_data->wglMakeCurrent(hdc, hglrc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   357
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   358
        WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   359
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   360
        if (_this->gl_data->WGL_ARB_pixel_format) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   361
            _this->gl_data->wglChoosePixelFormatARB(hdc, iAttribs, fAttribs,
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   362
                                                    1, &pixel_format,
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   363
                                                    &matching);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   364
        }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   365
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   366
        _this->gl_data->wglMakeCurrent(NULL, NULL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   367
        _this->gl_data->wglDeleteContext(hglrc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   368
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   369
    ReleaseDC(hwnd, hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   370
    DestroyWindow(hwnd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   371
    WIN_PumpEvents(_this);
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   372
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   373
    return pixel_format;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   374
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   375
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   376
static int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   377
WIN_GL_Initialize(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   378
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   379
    if (_this->gl_data) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   380
        ++_this->gl_data->initialized;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   381
        return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   382
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   383
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   384
    _this->gl_data =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   385
        (struct SDL_GLDriverData *) SDL_calloc(1,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   386
                                               sizeof(struct
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   387
                                                      SDL_GLDriverData));
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   388
    if (!_this->gl_data) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   389
        SDL_OutOfMemory();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   390
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   391
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   392
    _this->gl_data->initialized = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   393
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   394
    if (WIN_GL_LoadLibrary(_this, NULL) < 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   395
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   396
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   397
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   398
    return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   399
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   400
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   401
static void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   402
WIN_GL_Shutdown(_THIS)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   403
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   404
    if (!_this->gl_data || (--_this->gl_data->initialized > 0)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   405
        return;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   406
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   407
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   408
    WIN_GL_UnloadLibrary(_this);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   409
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   410
    SDL_free(_this->gl_data);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   411
    _this->gl_data = NULL;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   412
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   413
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   414
int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   415
WIN_GL_SetupWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   416
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   417
    HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   418
    PIXELFORMATDESCRIPTOR pfd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   419
    int pixel_format;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   420
    int iAttribs[64];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   421
    int *iAttr;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   422
    float fAttribs[1] = { 0 };
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   423
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   424
    if (WIN_GL_Initialize(_this) < 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   425
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   426
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   427
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   428
    WIN_GL_SetupPixelFormat(_this, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   429
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   430
    /* setup WGL_ARB_pixel_format attribs */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   431
    iAttr = &iAttribs[0];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   432
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   433
    *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   434
    *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   435
    *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   436
    *iAttr++ = WGL_FULL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   437
    *iAttr++ = WGL_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   438
    *iAttr++ = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   439
    *iAttr++ = WGL_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   440
    *iAttr++ = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   441
    *iAttr++ = WGL_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   442
    *iAttr++ = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   443
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   444
    if (_this->gl_config.alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   445
        *iAttr++ = WGL_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   446
        *iAttr++ = _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   447
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   448
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   449
    *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   450
    *iAttr++ = _this->gl_config.double_buffer;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   451
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   452
    *iAttr++ = WGL_DEPTH_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   453
    *iAttr++ = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   454
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   455
    if (_this->gl_config.stencil_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   456
        *iAttr++ = WGL_STENCIL_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   457
        *iAttr++ = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   458
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   459
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   460
    if (_this->gl_config.accum_red_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   461
        *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   462
        *iAttr++ = _this->gl_config.accum_red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   463
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   464
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   465
    if (_this->gl_config.accum_green_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   466
        *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   467
        *iAttr++ = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   468
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   469
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   470
    if (_this->gl_config.accum_blue_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   471
        *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   472
        *iAttr++ = _this->gl_config.accum_blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   473
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   474
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   475
    if (_this->gl_config.accum_alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   476
        *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   477
        *iAttr++ = _this->gl_config.accum_alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   478
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   479
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   480
    if (_this->gl_config.stereo) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   481
        *iAttr++ = WGL_STEREO_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   482
        *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   483
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   484
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   485
    if (_this->gl_config.multisamplebuffers) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   486
        *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   487
        *iAttr++ = _this->gl_config.multisamplebuffers;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   488
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   489
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   490
    if (_this->gl_config.multisamplesamples) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   491
        *iAttr++ = WGL_SAMPLES_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   492
        *iAttr++ = _this->gl_config.multisamplesamples;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   493
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   494
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   495
    if (_this->gl_config.accelerated >= 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   496
        *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   497
        *iAttr++ =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   498
            (_this->gl_config.
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   499
             accelerated ? WGL_GENERIC_ACCELERATION_ARB :
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   500
             WGL_NO_ACCELERATION_ARB);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   501
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   502
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   503
    *iAttr = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   504
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   505
    /* Choose and set the closest available pixel format */
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   506
    pixel_format = WIN_GL_ChoosePixelFormatARB(_this, iAttribs, fAttribs);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   507
    if (!pixel_format) {
2150
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
   508
        pixel_format = WIN_GL_ChoosePixelFormat(hdc, &pfd);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   509
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   510
    if (!pixel_format) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   511
        SDL_SetError("No matching GL pixel format available");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   512
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   513
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   514
    if (!SetPixelFormat(hdc, pixel_format, &pfd)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   515
        WIN_SetError("SetPixelFormat()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   516
        return (-1);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   517
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   518
    return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   519
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   520
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   521
void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   522
WIN_GL_CleanupWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   523
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   524
    WIN_GL_Shutdown(_this);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   525
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   526
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   527
SDL_GLContext
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   528
WIN_GL_CreateContext(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   529
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   530
    HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   531
    HGLRC context;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   532
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   533
    context = _this->gl_data->wglCreateContext(hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   534
    if (!context) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   535
        SDL_SetError("Could not create GL context");
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   536
        return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   537
    }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   538
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   539
    if (WIN_GL_MakeCurrent(_this, window, context) < 0) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   540
        WIN_GL_DeleteContext(_this, context);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   541
        return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   542
    }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   543
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   544
    WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   545
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
   546
    return context;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   547
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   548
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   549
int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   550
WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   551
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   552
    HDC hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   553
    int status;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   554
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   555
    if (window) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   556
        hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   557
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   558
        hdc = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   559
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   560
    if (!_this->gl_data->wglMakeCurrent(hdc, (HGLRC) context)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   561
        WIN_SetError("wglMakeCurrent()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   562
        status = -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   563
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   564
        status = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   565
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   566
    return status;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   567
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   568
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   569
int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   570
WIN_GL_SetSwapInterval(_THIS, int interval)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   571
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   572
    if (_this->gl_data->wglSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   573
        _this->gl_data->wglSwapIntervalEXT(interval);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   574
        return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   575
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   576
        SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   577
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   578
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   579
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   580
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   581
int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   582
WIN_GL_GetSwapInterval(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   583
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   584
    if (_this->gl_data->wglGetSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   585
        return _this->gl_data->wglGetSwapIntervalEXT();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   586
    } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   587
        SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   588
        return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   589
    }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   590
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   591
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   592
void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   593
WIN_GL_SwapWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   594
{
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   595
    HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   596
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   597
    SwapBuffers(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   598
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   599
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   600
void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   601
WIN_GL_DeleteContext(_THIS, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   602
{
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
   603
    _this->gl_data->wglDeleteContext((HGLRC) context);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   604
}
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   605
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
   606
#endif /* SDL_VIDEO_OPENGL_WGL */
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   607
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   608
/* vi: set ts=4 sw=4 expandtab: */