Mercurial > sdl-ios-xcode

annotate src/video/win32/SDL_win32opengl.c @ 2042:3908e1f808e1

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:56:36 +0000
parents 420716272158
children abbe2c1dcf0a
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 (_this->gl_config.driver_loaded) {
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41 if (path) {
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42 SDL_SetError("OpenGL library already loaded");
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43 return -1;
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44 } else {
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45 ++_this->gl_config.driver_loaded;
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46 return 0;
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47 }
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48 }
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49 if (path == NULL) {
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50 path = SDL_getenv("SDL_OPENGL_LIBRARY");
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51 }
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52 if (path == NULL) {
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53 path = DEFAULT_OPENGL;
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54 }
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55 wpath = WIN_UTF8ToString(path);
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56 handle = LoadLibrary(wpath);
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57 SDL_free(wpath);
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58 if (!handle) {
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59 char message[1024];
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60 SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")",
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61 path);
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62 WIN_SetError(message);
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63 return -1;
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64 }
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65
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66 /* Load function pointers */
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67 _this->gl_data->wglGetProcAddress = (void *(WINAPI *) (const char *))
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68 GetProcAddress(handle, "wglGetProcAddress");
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69 _this->gl_data->wglCreateContext = (HGLRC(WINAPI *) (HDC))
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70 GetProcAddress(handle, "wglCreateContext");
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71 _this->gl_data->wglDeleteContext = (BOOL(WINAPI *) (HGLRC))
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72 GetProcAddress(handle, "wglDeleteContext");
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73 _this->gl_data->wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC))
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74 GetProcAddress(handle, "wglMakeCurrent");
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75 _this->gl_data->wglSwapIntervalEXT = (void (WINAPI *) (int))
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76 GetProcAddress(handle, "wglSwapIntervalEXT");
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77 _this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *) (void))
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78 GetProcAddress(handle, "wglGetSwapIntervalEXT");
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79
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80 if (!_this->gl_data->wglGetProcAddress ||
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81 !_this->gl_data->wglCreateContext ||
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82 !_this->gl_data->wglDeleteContext ||
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83 !_this->gl_data->wglMakeCurrent) {
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84 SDL_SetError("Could not retrieve OpenGL functions");
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85 FreeLibrary(handle);
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86 return -1;
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87 }
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88
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89 _this->gl_config.dll_handle = handle;
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90 SDL_strlcpy(_this->gl_config.driver_path, path,
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91 SDL_arraysize(_this->gl_config.driver_path));
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92 _this->gl_config.driver_loaded = 1;
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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 static void
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111 WIN_GL_UnloadLibrary(_THIS)
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112 {
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113 if (_this->gl_config.driver_loaded > 0) {
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114 if (--_this->gl_config.driver_loaded > 0) {
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115 return;
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116 }
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117 FreeLibrary((HMODULE) _this->gl_config.dll_handle);
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118 _this->gl_config.dll_handle = NULL;
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119 }
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120 }
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121
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122 static void
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123 WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd)
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124 {
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125 SDL_zerop(pfd);
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126 pfd->nSize = sizeof(*pfd);
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127 pfd->nVersion = 1;
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128 pfd->dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
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129 if (_this->gl_config.double_buffer) {
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130 pfd->dwFlags |= PFD_DOUBLEBUFFER;
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131 }
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132 if (_this->gl_config.stereo) {
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133 pfd->dwFlags |= PFD_STEREO;
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134 }
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135 pfd->iLayerType = PFD_MAIN_PLANE;
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136 pfd->iPixelType = PFD_TYPE_RGBA;
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137 pfd->cRedBits = _this->gl_config.red_size;
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138 pfd->cGreenBits = _this->gl_config.green_size;
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139 pfd->cBlueBits = _this->gl_config.blue_size;
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140 pfd->cAlphaBits = _this->gl_config.alpha_size;
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141 if (_this->gl_config.buffer_size) {
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142 pfd->cColorBits =
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143 _this->gl_config.buffer_size - _this->gl_config.alpha_size;
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144 } else {
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145 pfd->cColorBits = (pfd->cRedBits + pfd->cGreenBits + pfd->cBlueBits);
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146 }
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147 pfd->cAccumRedBits = _this->gl_config.accum_red_size;
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148 pfd->cAccumGreenBits = _this->gl_config.accum_green_size;
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149 pfd->cAccumBlueBits = _this->gl_config.accum_blue_size;
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150 pfd->cAccumAlphaBits = _this->gl_config.accum_alpha_size;
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151 pfd->cAccumBits =
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152 (pfd->cAccumRedBits + pfd->cAccumGreenBits + pfd->cAccumBlueBits +
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 pfd->cAccumAlphaBits);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 pfd->cDepthBits = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 pfd->cStencilBits = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 static SDL_bool
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 HasExtension(const char *extension, const char *extensions)
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 const char *start;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 const char *where, *terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 /* Extension names should not have spaces. */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 where = SDL_strchr(extension, ' ');
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 if (where || *extension == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 if (!extensions)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 /* 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
173 * OpenGL extensions string. Don't be fooled by sub-strings,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 * etc. */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 start = extensions;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 for (;;) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 where = SDL_strstr(start, extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 if (!where)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 break;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 terminator = where + SDL_strlen(extension);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 if (where == start || *(where - 1) == ' ')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 if (*terminator == ' ' || *terminator == '\0')
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 return SDL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 start = terminator;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 return SDL_FALSE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 static void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 WIN_GL_InitExtensions(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 HWND hwnd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 HDC hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 PIXELFORMATDESCRIPTOR pfd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 int pixel_format;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 HGLRC hglrc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 const char *extensions;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 hwnd =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 CreateWindow(SDL_Appname, SDL_Appname, (WS_POPUP | WS_DISABLED), 0, 0,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 10, 10, NULL, NULL, SDL_Instance, NULL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 WIN_PumpEvents(_this);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 hdc = GetDC(hwnd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 WIN_GL_SetupPixelFormat(_this, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 pixel_format = ChoosePixelFormat(hdc, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 SetPixelFormat(hdc, pixel_format, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 hglrc = _this->gl_data->wglCreateContext(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 if (hglrc) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 _this->gl_data->wglMakeCurrent(hdc, hglrc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 _this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 if (wglGetExtensionsStringARB) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 extensions = wglGetExtensionsStringARB(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 extensions = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 /* Check for WGL_ARB_pixel_format */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 _this->gl_data->WGL_ARB_pixel_format = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 if (HasExtension("WGL_ARB_pixel_format", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 _this->gl_data->wglChoosePixelFormatARB = (BOOL(WINAPI *)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 (HDC, const int *,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 const FLOAT *, UINT,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 int *, UINT *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 _this->gl_data->wglGetPixelFormatAttribivARB =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 (BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *))
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 if ((_this->gl_data->wglChoosePixelFormatARB != NULL) &&
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 (_this->gl_data->wglGetPixelFormatAttribivARB != NULL)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 _this->gl_data->WGL_ARB_pixel_format = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 /* Check for WGL_EXT_swap_control */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 if (HasExtension("WGL_EXT_swap_control", extensions)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 _this->gl_data->wglSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 _this->gl_data->wglGetSwapIntervalEXT =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 WIN_GL_GetProcAddress(_this, "wglGetSwapIntervalEXT");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 if (hglrc) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 _this->gl_data->wglMakeCurrent(NULL, NULL);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 _this->gl_data->wglDeleteContext(hglrc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 ReleaseDC(hwnd, hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 DestroyWindow(hwnd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 WIN_PumpEvents(_this);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 static int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 WIN_GL_Initialize(_THIS)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 if (_this->gl_data) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 ++_this->gl_data->initialized;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271 _this->gl_data =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 (struct SDL_GLDriverData *) SDL_calloc(1,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 sizeof(struct
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 SDL_GLDriverData));
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 if (!_this->gl_data) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 SDL_OutOfMemory();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 _this->gl_data->initialized = 1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 if (WIN_GL_LoadLibrary(_this, NULL) < 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 return -1;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 /* Initialize extensions */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 WIN_GL_InitExtensions(_this);
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 return 0;
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
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
291 static void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
292 WIN_GL_Shutdown(_THIS)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
293 {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
294 if (!_this->gl_data || (--_this->gl_data->initialized > 0)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
295 return;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
296 }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
297
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
298 WIN_GL_UnloadLibrary(_this);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
299
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
300 SDL_free(_this->gl_data);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
301 _this->gl_data = NULL;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
302 }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
303
1913
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
304 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
305 WIN_GL_SetupWindow(_THIS, SDL_Window * window)
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 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
308 PIXELFORMATDESCRIPTOR pfd;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
309 int pixel_format;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
310 unsigned int matching;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
311 int iAttribs[64];
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
312 int *iAttr;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
313 float fAttribs[1] = { 0 };
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
315 if (WIN_GL_Initialize(_this) < 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
316 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
317 }
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 WIN_GL_SetupPixelFormat(_this, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
320
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
321 /* setup WGL_ARB_pixel_format attribs */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
322 iAttr = &iAttribs[0];
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 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
325 *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
326 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
327 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
328 *iAttr++ = WGL_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
329 *iAttr++ = _this->gl_config.red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330 *iAttr++ = WGL_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
331 *iAttr++ = _this->gl_config.green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
332 *iAttr++ = WGL_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
333 *iAttr++ = _this->gl_config.blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
334
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
335 if (_this->gl_config.alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
336 *iAttr++ = WGL_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
337 *iAttr++ = _this->gl_config.alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
339
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
340 *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
341 *iAttr++ = _this->gl_config.double_buffer;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
342
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
343 *iAttr++ = WGL_DEPTH_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
344 *iAttr++ = _this->gl_config.depth_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
345
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346 if (_this->gl_config.stencil_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
347 *iAttr++ = WGL_STENCIL_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 *iAttr++ = _this->gl_config.stencil_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
350
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
351 if (_this->gl_config.accum_red_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
352 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
353 *iAttr++ = _this->gl_config.accum_red_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
354 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
356 if (_this->gl_config.accum_green_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
358 *iAttr++ = _this->gl_config.accum_green_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
360
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
361 if (_this->gl_config.accum_blue_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
362 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
363 *iAttr++ = _this->gl_config.accum_blue_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
364 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
365
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 if (_this->gl_config.accum_alpha_size) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
367 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 *iAttr++ = _this->gl_config.accum_alpha_size;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 if (_this->gl_config.stereo) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 *iAttr++ = WGL_STEREO_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373 *iAttr++ = GL_TRUE;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 if (_this->gl_config.multisamplebuffers) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
378 *iAttr++ = _this->gl_config.multisamplebuffers;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
381 if (_this->gl_config.multisamplesamples) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
382 *iAttr++ = WGL_SAMPLES_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 *iAttr++ = _this->gl_config.multisamplesamples;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
384 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
385
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386 if (_this->gl_config.accelerated >= 0) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
387 *iAttr++ = WGL_ACCELERATION_ARB;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
388 *iAttr++ =
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
389 (_this->gl_config.
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
390 accelerated ? WGL_GENERIC_ACCELERATION_ARB :
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
391 WGL_NO_ACCELERATION_ARB);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392 }
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 *iAttr = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
395
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
396 /* Choose and set the closest available pixel format */
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
397 if (!_this->gl_data->WGL_ARB_pixel_format
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 || !_this->gl_data->wglChoosePixelFormatARB(hdc, iAttribs, fAttribs,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
399 1, &pixel_format,
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
400 &matching) || !matching) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401 pixel_format = ChoosePixelFormat(hdc, &pfd);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 if (!pixel_format) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 SDL_SetError("No matching GL pixel format available");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405 return -1;
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 if (!SetPixelFormat(hdc, pixel_format, &pfd)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 WIN_SetError("SetPixelFormat()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 return (-1);
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 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 }
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 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415 WIN_GL_CleanupWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
416 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417 WIN_GL_Shutdown(_this);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420 SDL_GLContext
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
421 WIN_GL_CreateContext(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
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 return _this->gl_data->wglCreateContext(hdc);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
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 HDC hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 int status;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 if (window) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
435 hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
436 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
437 hdc = NULL;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
439 if (!_this->gl_data->wglMakeCurrent(hdc, (HGLRC) context)) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
440 WIN_SetError("wglMakeCurrent()");
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
441 status = -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
442 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
443 status = 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
444 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
445 return status;
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
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
448 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
449 WIN_GL_SetSwapInterval(_THIS, int interval)
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 if (_this->gl_data->wglSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
452 _this->gl_data->wglSwapIntervalEXT(interval);
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
453 return 0;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
454 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
455 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
456 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
457 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
458 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
459
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
460 int
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
461 WIN_GL_GetSwapInterval(_THIS)
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 if (_this->gl_data->wglGetSwapIntervalEXT) {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
464 return _this->gl_data->wglGetSwapIntervalEXT();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
465 } else {
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
466 SDL_Unsupported();
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
467 return -1;
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
468 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
469 }
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
470
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
471 void
83420da906a5 Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
472 WIN_GL_SwapWindow(_THIS, SDL_Window * window)
83420da906a5 Implemented Windows OpenGL support
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473 {
83420da906a5 Implemented Windows OpenGL support
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474 HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
83420da906a5 Implemented Windows OpenGL support
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475
83420da906a5 Implemented Windows OpenGL support
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476 SwapBuffers(hdc);
83420da906a5 Implemented Windows OpenGL support
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477 }
83420da906a5 Implemented Windows OpenGL support
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478
83420da906a5 Implemented Windows OpenGL support
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479 void
83420da906a5 Implemented Windows OpenGL support
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480 WIN_GL_DeleteContext(_THIS, SDL_GLContext context)
83420da906a5 Implemented Windows OpenGL support
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481 {
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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482 _this->gl_data->wglDeleteContext((HGLRC) context);
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483 }
83420da906a5 Implemented Windows OpenGL support
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484
1952
420716272158 Implemented X11 OpenGL support.
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485 #endif /* SDL_VIDEO_OPENGL_WGL */
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83420da906a5 Implemented Windows OpenGL support
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486
83420da906a5 Implemented Windows OpenGL support
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487 /* vi: set ts=4 sw=4 expandtab: */