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annotate src/video/win32/SDL_win32opengl.c @ 3057:089a77aebb7d

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Added test program for SDL_CreateWindowFrom() Make sure OpenGL library is loaded before working with OpenGL windows, even those created with SDL_CreateWindowFrom()
author Sam Lantinga <slouken@libsdl.org>
date Mon, 09 Feb 2009 05:32:12 +0000
parents 99210400e8b9
children 7dc982143c06
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
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34 int
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35 WIN_GL_LoadLibrary(_THIS, const char *path)
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36 {
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37 LPTSTR wpath;
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38 HANDLE handle;
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39
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40 if (path == NULL) {
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41 path = SDL_getenv("SDL_OPENGL_LIBRARY");
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42 }
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43 if (path == NULL) {
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44 path = DEFAULT_OPENGL;
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45 }
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46 wpath = WIN_UTF8ToString(path);
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47 _this->gl_config.dll_handle = LoadLibrary(wpath);
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48 SDL_free(wpath);
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49 if (!_this->gl_config.dll_handle) {
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50 char message[1024];
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51 SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")",
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52 path);
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53 WIN_SetError(message);
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54 return -1;
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55 }
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56 SDL_strlcpy(_this->gl_config.driver_path, path,
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57 SDL_arraysize(_this->gl_config.driver_path));
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58
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59 /* Allocate OpenGL memory */
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60 _this->gl_data =
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61 (struct SDL_GLDriverData *) SDL_calloc(1,
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62 sizeof(struct
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63 SDL_GLDriverData));
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64 if (!_this->gl_data) {
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65 SDL_OutOfMemory();
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66 return -1;
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67 }
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68
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69 /* Load function pointers */
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70 handle = _this->gl_config.dll_handle;
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71 _this->gl_data->wglGetProcAddress = (void *(WINAPI *) (const char *))
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72 GetProcAddress(handle, "wglGetProcAddress");
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73 _this->gl_data->wglCreateContext = (HGLRC(WINAPI *) (HDC))
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74 GetProcAddress(handle, "wglCreateContext");
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75 _this->gl_data->wglDeleteContext = (BOOL(WINAPI *) (HGLRC))
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76 GetProcAddress(handle, "wglDeleteContext");
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77 _this->gl_data->wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC))
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78 GetProcAddress(handle, "wglMakeCurrent");
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79 _this->gl_data->wglSwapIntervalEXT = (void (WINAPI *) (int))
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80 GetProcAddress(handle, "wglSwapIntervalEXT");
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81 _this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *) (void))
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82 GetProcAddress(handle, "wglGetSwapIntervalEXT");
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83
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84 if (!_this->gl_data->wglGetProcAddress ||
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85 !_this->gl_data->wglCreateContext ||
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86 !_this->gl_data->wglDeleteContext ||
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87 !_this->gl_data->wglMakeCurrent) {
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88 SDL_SetError("Could not retrieve OpenGL functions");
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89 FreeLibrary(handle);
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90 return -1;
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91 }
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92
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93 return 0;
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94 }
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95
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96 void *
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97 WIN_GL_GetProcAddress(_THIS, const char *proc)
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98 {
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99 void *func;
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100
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101 /* This is to pick up extensions */
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102 func = _this->gl_data->wglGetProcAddress(proc);
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103 if (!func) {
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104 /* This is probably a normal GL function */
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105 func = GetProcAddress(_this->gl_config.dll_handle, proc);
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106 }
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107 return func;
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108 }
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109
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110 void
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111 WIN_GL_UnloadLibrary(_THIS)
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112 {
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113 FreeLibrary((HMODULE) _this->gl_config.dll_handle);
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114 _this->gl_config.dll_handle = NULL;
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115
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116 /* Free OpenGL memory */
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117 SDL_free(_this->gl_data);
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118 _this->gl_data = NULL;
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119 }
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120
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121 static void
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122 WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd)
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123 {
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124 SDL_zerop(pfd);
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125 pfd->nSize = sizeof(*pfd);
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126 pfd->nVersion = 1;
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127 pfd->dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
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128 if (_this->gl_config.double_buffer) {
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129 pfd->dwFlags |= PFD_DOUBLEBUFFER;
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130 }
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131 if (_this->gl_config.stereo) {
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132 pfd->dwFlags |= PFD_STEREO;
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133 }
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134 pfd->iLayerType = PFD_MAIN_PLANE;
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135 pfd->iPixelType = PFD_TYPE_RGBA;
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136 pfd->cRedBits = _this->gl_config.red_size;
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137 pfd->cGreenBits = _this->gl_config.green_size;
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138 pfd->cBlueBits = _this->gl_config.blue_size;
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139 pfd->cAlphaBits = _this->gl_config.alpha_size;
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140 if (_this->gl_config.buffer_size) {
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141 pfd->cColorBits =
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142 _this->gl_config.buffer_size - _this->gl_config.alpha_size;
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143 } else {
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144 pfd->cColorBits = (pfd->cRedBits + pfd->cGreenBits + pfd->cBlueBits);
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145 }
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146 pfd->cAccumRedBits = _this->gl_config.accum_red_size;
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147 pfd->cAccumGreenBits = _this->gl_config.accum_green_size;
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148 pfd->cAccumBlueBits = _this->gl_config.accum_blue_size;
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149 pfd->cAccumAlphaBits = _this->gl_config.accum_alpha_size;
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parents:
diff changeset
150 pfd->cAccumBits =
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
151 (pfd->cAccumRedBits + pfd->cAccumGreenBits + pfd->cAccumBlueBits +
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
152 pfd->cAccumAlphaBits);
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
153 pfd->cDepthBits = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 pfd->cStencilBits = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156
2150
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
157 /* Choose the closest pixel format that meets or exceeds the target.
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
158 FIXME: Should we weight any particular attribute over any other?
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
159 */
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
160 static int
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
161 WIN_GL_ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR * target)
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
162 {
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
163 PIXELFORMATDESCRIPTOR pfd;
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
164 int count, index, best = 0;
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
165 unsigned int dist, best_dist = ~0U;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
166
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
167 count = DescribePixelFormat(hdc, 1, sizeof(pfd), NULL);
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
168
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
169 for (index = 1; index <= count; index++) {
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
170
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
171 if (!DescribePixelFormat(hdc, index, sizeof(pfd), &pfd)) {
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
172 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
173 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
174
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
175 if ((pfd.dwFlags & target->dwFlags) != target->dwFlags) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
176 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
177 }
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 if (pfd.iLayerType != target->iLayerType) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
180 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
181 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
182 if (pfd.iPixelType != target->iPixelType) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
183 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
184 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
185
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
186 dist = 0;
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parents: 1952
diff changeset
187
abbe2c1dcf0a Fixed bug #77
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parents: 1952
diff changeset
188 if (pfd.cColorBits < target->cColorBits) {
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Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
189 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
190 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
191 dist += (pfd.cColorBits - target->cColorBits);
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 if (pfd.cRedBits < target->cRedBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
194 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
195 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
196 dist += (pfd.cRedBits - target->cRedBits);
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
197 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
198 if (pfd.cGreenBits < target->cGreenBits) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
199 continue;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
200 } else {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
201 dist += (pfd.cGreenBits - target->cGreenBits);
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.cBlueBits < target->cBlueBits) {
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.cBlueBits - target->cBlueBits);
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.cAlphaBits < target->cAlphaBits) {
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.cAlphaBits - target->cAlphaBits);
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.cAccumBits < target->cAccumBits) {
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.cAccumBits - target->cAccumBits);
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.cAccumRedBits < target->cAccumRedBits) {
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.cAccumRedBits - target->cAccumRedBits);
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.cAccumGreenBits < target->cAccumGreenBits) {
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.cAccumGreenBits - target->cAccumGreenBits);
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.cAccumBlueBits < target->cAccumBlueBits) {
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.cAccumBlueBits - target->cAccumBlueBits);
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.cAccumAlphaBits < target->cAccumAlphaBits) {
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.cAccumAlphaBits - target->cAccumAlphaBits);
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.cDepthBits < target->cDepthBits) {
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.cDepthBits - target->cDepthBits);
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.cStencilBits < target->cStencilBits) {
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.cStencilBits - target->cStencilBits);
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
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
249 if (dist < best_dist) {
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
250 best = index;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
251 best_dist = dist;
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 }
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 return best;
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
256 }
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
257
1913
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
258 static SDL_bool
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
259 HasExtension(const char *extension, const char *extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
261 const char *start;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
262 const char *where, *terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 /* Extension names should not have spaces. */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 where = SDL_strchr(extension, ' ');
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 if (where || *extension == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 if (!extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 /* 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
273 * OpenGL extensions string. Don't be fooled by sub-strings,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 * etc. */
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
275
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
276 start = extensions;
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
277
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 for (;;) {
83420da906a5 Implemented Windows OpenGL support
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parents:
diff changeset
279 where = SDL_strstr(start, extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280 if (!where)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 break;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283 terminator = where + SDL_strlen(extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 if (where == start || *(where - 1) == ' ')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 if (*terminator == ' ' || *terminator == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 return SDL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
288 start = terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
290 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
291 }
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 static void
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
294 WIN_GL_InitExtensions(_THIS, HDC hdc)
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
295 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297 const char *extensions;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
299 wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
300 _this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
301 if (wglGetExtensionsStringARB) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
302 extensions = wglGetExtensionsStringARB(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
303 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 extensions = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 }
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 /* Check for WGL_ARB_pixel_format */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
308 _this->gl_data->WGL_ARB_pixel_format = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
309 if (HasExtension("WGL_ARB_pixel_format", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
310 _this->gl_data->wglChoosePixelFormatARB = (BOOL(WINAPI *)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311 (HDC, const int *,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 const FLOAT *, UINT,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
313 int *, UINT *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314 WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
315 _this->gl_data->wglGetPixelFormatAttribivARB =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
316 (BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317 WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
318
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319 if ((_this->gl_data->wglChoosePixelFormatARB != NULL) &&
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
320 (_this->gl_data->wglGetPixelFormatAttribivARB != NULL)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
321 _this->gl_data->WGL_ARB_pixel_format = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
322 }
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 /* Check for WGL_EXT_swap_control */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326 if (HasExtension("WGL_EXT_swap_control", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
327 _this->gl_data->wglSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
328 WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
329 _this->gl_data->wglGetSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330 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
331 } else {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
332 _this->gl_data->wglSwapIntervalEXT = NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
333 _this->gl_data->wglGetSwapIntervalEXT = NULL;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
334 }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
335 }
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 static int
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
338 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
339 {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
340 HWND hwnd;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
341 HDC hdc;
2180
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
342 PIXELFORMATDESCRIPTOR pfd;
2178
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
2180
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
354 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
355
5ed37b16c1a7 Yes, you need to set the pixel format before creating a context.
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
356 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
357
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
358 hglrc = _this->gl_data->wglCreateContext(hdc);
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 if (hglrc) {
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
360 _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
361
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
362 WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
363
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
364 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
365 _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
366 1, &pixel_format,
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
367 &matching);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
368 }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
369
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370 _this->gl_data->wglMakeCurrent(NULL, NULL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 _this->gl_data->wglDeleteContext(hglrc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373 ReleaseDC(hwnd, hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 DestroyWindow(hwnd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 WIN_PumpEvents(_this);
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
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 return pixel_format;
1913
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
380 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
381 WIN_GL_SetupWindow(_THIS, SDL_Window * window)
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 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
384 PIXELFORMATDESCRIPTOR pfd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
385 int pixel_format;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386 int iAttribs[64];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 int *iAttr;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388 float fAttribs[1] = { 0 };
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390 WIN_GL_SetupPixelFormat(_this, &pfd);
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 /* setup WGL_ARB_pixel_format attribs */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 iAttr = &iAttribs[0];
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 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
397 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
399 *iAttr++ = WGL_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 *iAttr++ = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401 *iAttr++ = WGL_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 *iAttr++ = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 *iAttr++ = WGL_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 *iAttr++ = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406 if (_this->gl_config.alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407 *iAttr++ = WGL_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 *iAttr++ = _this->gl_config.alpha_size;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
411 *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 *iAttr++ = _this->gl_config.double_buffer;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414 *iAttr++ = WGL_DEPTH_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415 *iAttr++ = _this->gl_config.depth_size;
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 if (_this->gl_config.stencil_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 *iAttr++ = WGL_STENCIL_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419 *iAttr++ = _this->gl_config.stencil_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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 if (_this->gl_config.accum_red_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 *iAttr++ = _this->gl_config.accum_red_size;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 if (_this->gl_config.accum_green_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 *iAttr++ = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 }
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.accum_blue_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 *iAttr++ = _this->gl_config.accum_blue_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_alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
439 *iAttr++ = _this->gl_config.accum_alpha_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.stereo) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
443 *iAttr++ = WGL_STEREO_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
444 *iAttr++ = GL_TRUE;
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.multisamplebuffers) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
448 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
449 *iAttr++ = _this->gl_config.multisamplebuffers;
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.multisamplesamples) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
453 *iAttr++ = WGL_SAMPLES_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
454 *iAttr++ = _this->gl_config.multisamplesamples;
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.accelerated >= 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
458 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
459 *iAttr++ =
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2180
diff changeset
460 (_this->gl_config.accelerated ? WGL_GENERIC_ACCELERATION_ARB :
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
461 WGL_NO_ACCELERATION_ARB);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
462 }
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 *iAttr = 0;
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 /* 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
467 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
468 if (!pixel_format) {
2150
abbe2c1dcf0a Fixed bug #77
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
469 pixel_format = WIN_GL_ChoosePixelFormat(hdc, &pfd);
1913
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 if (!pixel_format) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
472 SDL_SetError("No matching GL pixel format available");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
473 return -1;
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 (!SetPixelFormat(hdc, pixel_format, &pfd)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
476 WIN_SetError("SetPixelFormat()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
477 return (-1);
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 return 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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
482 SDL_GLContext
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
483 WIN_GL_CreateContext(_THIS, SDL_Window * window)
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 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
486 HGLRC context;
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
487
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
488 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
489 if (!context) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
490 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
491 return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
492 }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
493
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
494 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
495 WIN_GL_DeleteContext(_this, context);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
496 return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
497 }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
498
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
499 WIN_GL_InitExtensions(_this, hdc);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
500
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2150
diff changeset
501 return context;
1913
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
504 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
505 WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
506 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
507 HDC hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
508 int status;
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 (window) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
511 hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
512 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
513 hdc = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
514 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
515 if (!_this->gl_data->wglMakeCurrent(hdc, (HGLRC) context)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
516 WIN_SetError("wglMakeCurrent()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
517 status = -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
518 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
519 status = 0;
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 return status;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
522 }
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 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
525 WIN_GL_SetSwapInterval(_THIS, int interval)
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 if (_this->gl_data->wglSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
528 _this->gl_data->wglSwapIntervalEXT(interval);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
529 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
530 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
531 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
532 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
533 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
534 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
535
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
536 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
537 WIN_GL_GetSwapInterval(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
538 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
539 if (_this->gl_data->wglGetSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
540 return _this->gl_data->wglGetSwapIntervalEXT();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
541 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
542 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
543 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
544 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
545 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
546
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
547 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
548 WIN_GL_SwapWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
549 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
550 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
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 SwapBuffers(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
553 }
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 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
556 WIN_GL_DeleteContext(_THIS, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
557 {
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1926
diff changeset
558 _this->gl_data->wglDeleteContext((HGLRC) context);
1913
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
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
561 #endif /* SDL_VIDEO_OPENGL_WGL */
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
562
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
563 /* vi: set ts=4 sw=4 expandtab: */