sdl-ios-xcode: src/video/win32/SDL_win32opengl.c annotate

annotate src/video/win32/SDL_win32opengl.c @ 2178:114a541cfae2

Creating a context makes it current, per the documentation. Applied a variant of the multi-card OpenGL fix from SDL 1.2

author	Sam Lantinga <slouken@libsdl.org>
date	Thu, 12 Jul 2007 06:31:36 +0000
parents	abbe2c1dcf0a
children	5ed37b16c1a7

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

Mercurial > sdl-ios-xcode

annotate src/video/win32/SDL_win32opengl.c @ 2178:114a541cfae2