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annotate src/video/win32/SDL_win32opengl.c @ 3280:00cace2d9080

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Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
author Sam Lantinga <slouken@libsdl.org>
date Sat, 19 Sep 2009 13:29:40 +0000
parents 7f684f249ec9
children f43c8f688f77
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_win32video.h"
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25
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26 /* WGL implementation of SDL OpenGL support */
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27
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28 #if SDL_VIDEO_OPENGL_WGL
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29 #include "SDL_opengl.h"
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30
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31 #define DEFAULT_OPENGL "OPENGL32.DLL"
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32
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33 #ifndef WGL_ARB_create_context
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34 #define WGL_ARB_create_context
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35 #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
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36 #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
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37 #define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
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38 #define WGL_CONTEXT_FLAGS_ARB 0x2093
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39 #define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
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40 #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
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41 #endif
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42
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43 typedef HGLRC(APIENTRYP PFNWGLCREATECONTEXTATTRIBSARBPROC) (HDC hDC,
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44 HGLRC
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45 hShareContext,
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46 const int
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47 *attribList);
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48
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49 int
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50 WIN_GL_LoadLibrary(_THIS, const char *path)
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51 {
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52 LPTSTR wpath;
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53 HANDLE handle;
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54
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55 if (path == NULL) {
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56 path = SDL_getenv("SDL_OPENGL_LIBRARY");
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57 }
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58 if (path == NULL) {
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59 path = DEFAULT_OPENGL;
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60 }
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61 wpath = WIN_UTF8ToString(path);
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62 _this->gl_config.dll_handle = LoadLibrary(wpath);
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63 SDL_free(wpath);
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64 if (!_this->gl_config.dll_handle) {
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65 char message[1024];
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66 SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")",
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67 path);
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68 WIN_SetError(message);
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69 return -1;
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70 }
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71 SDL_strlcpy(_this->gl_config.driver_path, path,
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72 SDL_arraysize(_this->gl_config.driver_path));
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73
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74 /* Allocate OpenGL memory */
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75 _this->gl_data =
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76 (struct SDL_GLDriverData *) SDL_calloc(1,
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77 sizeof(struct
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78 SDL_GLDriverData));
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79 if (!_this->gl_data) {
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80 SDL_OutOfMemory();
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81 return -1;
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82 }
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83
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84 /* Load function pointers */
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85 handle = _this->gl_config.dll_handle;
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86 _this->gl_data->wglGetProcAddress = (void *(WINAPI *) (const char *))
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87 GetProcAddress(handle, "wglGetProcAddress");
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88 _this->gl_data->wglCreateContext = (HGLRC(WINAPI *) (HDC))
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89 GetProcAddress(handle, "wglCreateContext");
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90 _this->gl_data->wglDeleteContext = (BOOL(WINAPI *) (HGLRC))
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91 GetProcAddress(handle, "wglDeleteContext");
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92 _this->gl_data->wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC))
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93 GetProcAddress(handle, "wglMakeCurrent");
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94 _this->gl_data->wglSwapIntervalEXT = (void (WINAPI *) (int))
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95 GetProcAddress(handle, "wglSwapIntervalEXT");
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96 _this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *) (void))
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97 GetProcAddress(handle, "wglGetSwapIntervalEXT");
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98
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99 if (!_this->gl_data->wglGetProcAddress ||
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100 !_this->gl_data->wglCreateContext ||
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101 !_this->gl_data->wglDeleteContext ||
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102 !_this->gl_data->wglMakeCurrent) {
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103 SDL_SetError("Could not retrieve OpenGL functions");
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104 FreeLibrary(handle);
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105 return -1;
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106 }
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107
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108 return 0;
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109 }
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110
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111 void *
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112 WIN_GL_GetProcAddress(_THIS, const char *proc)
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113 {
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114 void *func;
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115
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116 /* This is to pick up extensions */
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117 func = _this->gl_data->wglGetProcAddress(proc);
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118 if (!func) {
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119 /* This is probably a normal GL function */
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120 func = GetProcAddress(_this->gl_config.dll_handle, proc);
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121 }
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122 return func;
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123 }
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124
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125 void
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126 WIN_GL_UnloadLibrary(_THIS)
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127 {
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128 FreeLibrary((HMODULE) _this->gl_config.dll_handle);
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129 _this->gl_config.dll_handle = NULL;
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130
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131 /* Free OpenGL memory */
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132 SDL_free(_this->gl_data);
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133 _this->gl_data = NULL;
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134 }
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135
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136 static void
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137 WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd)
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138 {
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139 SDL_zerop(pfd);
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140 pfd->nSize = sizeof(*pfd);
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141 pfd->nVersion = 1;
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142 pfd->dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
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143 if (_this->gl_config.double_buffer) {
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144 pfd->dwFlags |= PFD_DOUBLEBUFFER;
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145 }
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146 if (_this->gl_config.stereo) {
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147 pfd->dwFlags |= PFD_STEREO;
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148 }
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149 pfd->iLayerType = PFD_MAIN_PLANE;
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150 pfd->iPixelType = PFD_TYPE_RGBA;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
151 pfd->cRedBits = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
152 pfd->cGreenBits = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 pfd->cBlueBits = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 pfd->cAlphaBits = _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 if (_this->gl_config.buffer_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 pfd->cColorBits =
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
157 _this->gl_config.buffer_size - _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
158 } else {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
159 pfd->cColorBits = (pfd->cRedBits + pfd->cGreenBits + pfd->cBlueBits);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 pfd->cAccumRedBits = _this->gl_config.accum_red_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
162 pfd->cAccumGreenBits = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
163 pfd->cAccumBlueBits = _this->gl_config.accum_blue_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
164 pfd->cAccumAlphaBits = _this->gl_config.accum_alpha_size;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
165 pfd->cAccumBits =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 (pfd->cAccumRedBits + pfd->cAccumGreenBits + pfd->cAccumBlueBits +
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
167 pfd->cAccumAlphaBits);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 pfd->cDepthBits = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 pfd->cStencilBits = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171
2150
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
172 /* Choose the closest pixel format that meets or exceeds the target.
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
173 FIXME: Should we weight any particular attribute over any other?
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
174 */
abbe2c1dcf0a Fixed bug #77
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diff changeset
175 static int
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
176 WIN_GL_ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR * target)
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
177 {
abbe2c1dcf0a Fixed bug #77
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diff changeset
178 PIXELFORMATDESCRIPTOR pfd;
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
179 int count, index, best = 0;
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
180 unsigned int dist, best_dist = ~0U;
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
181
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
182 count = DescribePixelFormat(hdc, 1, sizeof(pfd), NULL);
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
183
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
184 for (index = 1; index <= count; index++) {
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
185
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
186 if (!DescribePixelFormat(hdc, index, sizeof(pfd), &pfd)) {
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
187 continue;
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
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
190 if ((pfd.dwFlags & target->dwFlags) != target->dwFlags) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
191 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
192 }
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.iLayerType != target->iLayerType) {
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 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
197 if (pfd.iPixelType != target->iPixelType) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
198 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
199 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
200
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
201 dist = 0;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
202
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
203 if (pfd.cColorBits < target->cColorBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
204 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
205 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
206 dist += (pfd.cColorBits - target->cColorBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
207 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
208 if (pfd.cRedBits < target->cRedBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
209 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
210 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
211 dist += (pfd.cRedBits - target->cRedBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
212 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
213 if (pfd.cGreenBits < target->cGreenBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
214 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
215 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
216 dist += (pfd.cGreenBits - target->cGreenBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
217 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
218 if (pfd.cBlueBits < target->cBlueBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
219 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
220 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
221 dist += (pfd.cBlueBits - target->cBlueBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
222 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
223 if (pfd.cAlphaBits < target->cAlphaBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
224 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
225 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
226 dist += (pfd.cAlphaBits - target->cAlphaBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
227 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
228 if (pfd.cAccumBits < target->cAccumBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
229 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
230 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
231 dist += (pfd.cAccumBits - target->cAccumBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
232 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
233 if (pfd.cAccumRedBits < target->cAccumRedBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
234 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
235 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
236 dist += (pfd.cAccumRedBits - target->cAccumRedBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
237 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
238 if (pfd.cAccumGreenBits < target->cAccumGreenBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
239 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
240 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
241 dist += (pfd.cAccumGreenBits - target->cAccumGreenBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
242 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
243 if (pfd.cAccumBlueBits < target->cAccumBlueBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
244 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
245 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
246 dist += (pfd.cAccumBlueBits - target->cAccumBlueBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
247 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
248 if (pfd.cAccumAlphaBits < target->cAccumAlphaBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
249 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
250 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
251 dist += (pfd.cAccumAlphaBits - target->cAccumAlphaBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
252 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
253 if (pfd.cDepthBits < target->cDepthBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
254 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
255 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
256 dist += (pfd.cDepthBits - target->cDepthBits);
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 if (pfd.cStencilBits < target->cStencilBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
259 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
260 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
261 dist += (pfd.cStencilBits - target->cStencilBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
262 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
263
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
264 if (dist < best_dist) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
265 best = index;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
266 best_dist = dist;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
267 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
268 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
269
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
270 return best;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
271 }
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
272
1913
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
273 static SDL_bool
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
274 HasExtension(const char *extension, const char *extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
276 const char *start;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
277 const char *where, *terminator;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
278
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
279 /* Extension names should not have spaces. */
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
280 where = SDL_strchr(extension, ' ');
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 if (where || *extension == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 return SDL_FALSE;
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 if (!extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287 /* 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
288 * OpenGL extensions string. Don't be fooled by sub-strings,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 * etc. */
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
290
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
291 start = extensions;
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 for (;;) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
294 where = SDL_strstr(start, extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
295 if (!where)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 break;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298 terminator = where + SDL_strlen(extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 if (where == start || *(where - 1) == ' ')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
300 if (*terminator == ' ' || *terminator == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
301 return SDL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
302
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
303 start = terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 return SDL_FALSE;
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 static void
2178
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diff changeset
309 WIN_GL_InitExtensions(_THIS, HDC hdc)
1913
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diff changeset
310 {
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parents:
diff changeset
311 const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
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parents:
diff changeset
312 const char *extensions;
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parents:
diff changeset
313
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parents:
diff changeset
314 wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
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parents:
diff changeset
315 _this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
316 if (wglGetExtensionsStringARB) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
317 extensions = wglGetExtensionsStringARB(hdc);
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
318 } else {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
319 extensions = NULL;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
320 }
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
321
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parents:
diff changeset
322 /* Check for WGL_ARB_pixel_format */
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
323 _this->gl_data->WGL_ARB_pixel_format = 0;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
324 if (HasExtension("WGL_ARB_pixel_format", extensions)) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
325 _this->gl_data->wglChoosePixelFormatARB = (BOOL(WINAPI *)
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
326 (HDC, const int *,
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
327 const FLOAT *, UINT,
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
328 int *, UINT *))
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
329 WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB");
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
330 _this->gl_data->wglGetPixelFormatAttribivARB =
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
331 (BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *))
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
332 WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB");
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
333
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
334 if ((_this->gl_data->wglChoosePixelFormatARB != NULL) &&
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
335 (_this->gl_data->wglGetPixelFormatAttribivARB != NULL)) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
336 _this->gl_data->WGL_ARB_pixel_format = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
337 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338 }
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
339
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
340 /* Check for WGL_EXT_swap_control */
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
341 if (HasExtension("WGL_EXT_swap_control", extensions)) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
342 _this->gl_data->wglSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
343 WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
344 _this->gl_data->wglGetSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
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345 WIN_GL_GetProcAddress(_this, "wglGetSwapIntervalEXT");
2178
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diff changeset
346 } else {
114a541cfae2 Creating a context makes it current, per the documentation.
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diff changeset
347 _this->gl_data->wglSwapIntervalEXT = NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
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diff changeset
348 _this->gl_data->wglGetSwapIntervalEXT = NULL;
1913
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diff changeset
349 }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
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diff changeset
350 }
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
351
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
352 static int
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
353 WIN_GL_ChoosePixelFormatARB(_THIS, int *iAttribs, float *fAttribs)
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
354 {
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
355 HWND hwnd;
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
356 HDC hdc;
2180
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
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diff changeset
357 PIXELFORMATDESCRIPTOR pfd;
2178
114a541cfae2 Creating a context makes it current, per the documentation.
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diff changeset
358 HGLRC hglrc;
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
359 int pixel_format = 0;
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
360 unsigned int matching;
1913
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
361
2178
114a541cfae2 Creating a context makes it current, per the documentation.
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diff changeset
362 hwnd =
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
363 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
364 10, 10, NULL, NULL, SDL_Instance, NULL);
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
365 WIN_PumpEvents(_this);
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
366
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
367 hdc = GetDC(hwnd);
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
368
2180
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
369 WIN_GL_SetupPixelFormat(_this, &pfd);
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
370
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
371 SetPixelFormat(hdc, ChoosePixelFormat(hdc, &pfd), &pfd);
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
372
2178
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
373 hglrc = _this->gl_data->wglCreateContext(hdc);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 if (hglrc) {
2178
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
375 _this->gl_data->wglMakeCurrent(hdc, hglrc);
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
376
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
377 WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
378
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
379 if (_this->gl_data->WGL_ARB_pixel_format) {
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
380 _this->gl_data->wglChoosePixelFormatARB(hdc, iAttribs, fAttribs,
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
381 1, &pixel_format,
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
382 &matching);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
383 }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
384
1913
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parents:
diff changeset
385 _this->gl_data->wglMakeCurrent(NULL, NULL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386 _this->gl_data->wglDeleteContext(hglrc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388 ReleaseDC(hwnd, hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389 DestroyWindow(hwnd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390 WIN_PumpEvents(_this);
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
391
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 2150
diff changeset
392 return pixel_format;
1913
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 WIN_GL_SetupWindow(_THIS, SDL_Window * window)
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 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
399 PIXELFORMATDESCRIPTOR pfd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 int pixel_format;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401 int iAttribs[64];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 int *iAttr;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 float fAttribs[1] = { 0 };
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405 WIN_GL_SetupPixelFormat(_this, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407 /* setup WGL_ARB_pixel_format attribs */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 iAttr = &iAttribs[0];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
411 *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414 *iAttr++ = WGL_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415 *iAttr++ = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
416 *iAttr++ = WGL_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417 *iAttr++ = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 *iAttr++ = WGL_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419 *iAttr++ = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
421 if (_this->gl_config.alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 *iAttr++ = WGL_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 *iAttr++ = _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 *iAttr++ = _this->gl_config.double_buffer;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 *iAttr++ = WGL_DEPTH_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 *iAttr++ = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 if (_this->gl_config.stencil_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433 *iAttr++ = WGL_STENCIL_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 *iAttr++ = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
435 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
436
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
437 if (_this->gl_config.accum_red_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
439 *iAttr++ = _this->gl_config.accum_red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
440 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
441
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
442 if (_this->gl_config.accum_green_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
443 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
444 *iAttr++ = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
445 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
446
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
447 if (_this->gl_config.accum_blue_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
448 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
449 *iAttr++ = _this->gl_config.accum_blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
450 }
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 if (_this->gl_config.accum_alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
453 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
454 *iAttr++ = _this->gl_config.accum_alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
455 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
456
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
457 if (_this->gl_config.stereo) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
458 *iAttr++ = WGL_STEREO_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
459 *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
460 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
461
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
462 if (_this->gl_config.multisamplebuffers) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
463 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
464 *iAttr++ = _this->gl_config.multisamplebuffers;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
465 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
466
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
467 if (_this->gl_config.multisamplesamples) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
468 *iAttr++ = WGL_SAMPLES_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
469 *iAttr++ = _this->gl_config.multisamplesamples;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
470 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
471
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
472 if (_this->gl_config.accelerated >= 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
473 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
474 *iAttr++ =
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2180
diff changeset
475 (_this->gl_config.accelerated ? WGL_GENERIC_ACCELERATION_ARB :
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
476 WGL_NO_ACCELERATION_ARB);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
477 }
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 *iAttr = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
480
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
481 /* 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
482 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
483 if (!pixel_format) {
2150
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
484 pixel_format = WIN_GL_ChoosePixelFormat(hdc, &pfd);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
485 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
486 if (!pixel_format) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
487 SDL_SetError("No matching GL pixel format available");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
488 return -1;
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 (!SetPixelFormat(hdc, pixel_format, &pfd)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
491 WIN_SetError("SetPixelFormat()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
492 return (-1);
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 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
495 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
496
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
497 SDL_GLContext
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
498 WIN_GL_CreateContext(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
499 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
500 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
501 HGLRC context;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
502
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
503 if (_this->gl_config.major_version < 3) {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
504 context = _this->gl_data->wglCreateContext(hdc);
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
505 } else {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
506 PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
507 HGLRC temp_context = _this->gl_data->wglCreateContext(hdc);
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
508 if (!temp_context) {
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
509 SDL_SetError("Could not create GL context");
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
510 return NULL;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
511 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
512
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
513 /* Make the context current */
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
514 if (WIN_GL_MakeCurrent(_this, window, temp_context) < 0) {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
515 WIN_GL_DeleteContext(_this, temp_context);
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
516 return NULL;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
517 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
518
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
519 wglCreateContextAttribsARB =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
520 (PFNWGLCREATECONTEXTATTRIBSARBPROC) _this->gl_data->
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
521 wglGetProcAddress("wglCreateContextAttribsARB");
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
522 if (!wglCreateContextAttribsARB) {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
523 SDL_SetError("GL 3.x is not supported");
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
524 context = temp_context;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
525 } else {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
526 int attribs[] = {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
527 WGL_CONTEXT_MAJOR_VERSION_ARB, _this->gl_config.major_version,
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
528 WGL_CONTEXT_MINOR_VERSION_ARB, _this->gl_config.minor_version,
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
529 0
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
530 };
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
531 /* Create the GL 3.x context */
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
532 context = wglCreateContextAttribsARB(hdc, 0, attribs);
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
533 /* Delete the GL 2.x context */
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
534 _this->gl_data->wglDeleteContext(temp_context);
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
535 }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
536 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
537
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
538 if (!context) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
539 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
540 return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
541 }
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 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
544 WIN_GL_DeleteContext(_this, context);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
545 return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
546 }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
547
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
548 WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
549
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
550 return context;
1913
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
553 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
554 WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
555 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
556 HDC hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
557 int status;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
558
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
559 if (window) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
560 hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
561 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
562 hdc = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
563 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
564 if (!_this->gl_data->wglMakeCurrent(hdc, (HGLRC) context)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
565 WIN_SetError("wglMakeCurrent()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
566 status = -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
567 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
568 status = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
569 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
570 return status;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
573 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
574 WIN_GL_SetSwapInterval(_THIS, int interval)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
575 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
576 if (_this->gl_data->wglSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
577 _this->gl_data->wglSwapIntervalEXT(interval);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
578 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
579 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
580 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
581 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
582 }
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
585 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
586 WIN_GL_GetSwapInterval(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
587 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
588 if (_this->gl_data->wglGetSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
589 return _this->gl_data->wglGetSwapIntervalEXT();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
590 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
591 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
592 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
593 }
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
596 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
597 WIN_GL_SwapWindow(_THIS, SDL_Window * window)
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 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
600
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
601 SwapBuffers(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
602 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
603
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
604 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
605 WIN_GL_DeleteContext(_THIS, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
606 {
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
607 _this->gl_data->wglDeleteContext((HGLRC) context);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
608 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
609
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
610 #endif /* SDL_VIDEO_OPENGL_WGL */
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
611
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
612 /* vi: set ts=4 sw=4 expandtab: */