slouken@1936
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1 |
/*
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slouken@5535
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Simple DirectMedia Layer
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slouken@6885
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Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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slouken@1936
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slouken@5535
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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slouken@1936
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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slouken@1936
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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slouken@5535
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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slouken@1936
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*/
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#include "SDL_config.h"
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slouken@1936
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slouken@1936
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/* NSOpenGL implementation of SDL OpenGL support */
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slouken@1936
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slouken@1952
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#if SDL_VIDEO_OPENGL_CGL
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slouken@6044
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#include "SDL_cocoavideo.h"
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jorgen@7594
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#include "SDL_cocoaopengl.h"
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#include <OpenGL/CGLTypes.h>
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#include <OpenGL/OpenGL.h>
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#include <OpenGL/CGLRenderers.h>
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#include "SDL_loadso.h"
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#include "SDL_opengl.h"
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slouken@1936
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icculus@6567
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#define DEFAULT_OPENGL "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib"
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icculus@6567
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#ifndef kCGLPFAOpenGLProfile
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icculus@6567
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#define kCGLPFAOpenGLProfile 99
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#endif
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slouken@6952
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#ifndef kCGLOGLPVersion_Legacy
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icculus@6567
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#define kCGLOGLPVersion_Legacy 0x1000
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#endif
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#ifndef kCGLOGLPVersion_3_2_Core
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icculus@6567
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#define kCGLOGLPVersion_3_2_Core 0x3200
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#endif
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icculus@6567
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@implementation SDLOpenGLContext : NSOpenGLContext
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- (id)initWithFormat:(NSOpenGLPixelFormat *)format
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shareContext:(NSOpenGLContext *)share
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{
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SDL_AtomicSet(&self->dirty, 0);
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return [super initWithFormat:format shareContext:share];
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}
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- (void)scheduleUpdate
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{
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SDL_AtomicAdd(&self->dirty, 1);
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}
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/* This should only be called on the thread on which a user is using the context. */
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- (void)updateIfNeeded
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{
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int value = SDL_AtomicSet(&self->dirty, 0);
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if (value > 0) {
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/* We call the real underlying update here, since -[SDLOpenGLContext update] just calls us. */
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[super update];
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}
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}
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/* This should only be called on the thread on which a user is using the context. */
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- (void)update
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{
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jorgen@7594
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/* This ensures that regular 'update' calls clear the atomic dirty flag. */
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[self scheduleUpdate];
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[self updateIfNeeded];
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}
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@end
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slouken@1936
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int
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Cocoa_GL_LoadLibrary(_THIS, const char *path)
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{
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slouken@3057
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/* Load the OpenGL library */
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if (path == NULL) {
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slouken@1952
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path = SDL_getenv("SDL_OPENGL_LIBRARY");
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slouken@1952
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}
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slouken@1952
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if (path == NULL) {
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slouken@1952
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path = DEFAULT_OPENGL;
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slouken@1936
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}
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slouken@1936
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_this->gl_config.dll_handle = SDL_LoadObject(path);
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slouken@1936
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if (!_this->gl_config.dll_handle) {
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slouken@1936
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return -1;
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slouken@1936
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}
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slouken@1936
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SDL_strlcpy(_this->gl_config.driver_path, path,
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SDL_arraysize(_this->gl_config.driver_path));
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return 0;
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slouken@1936
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}
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slouken@1936
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void *
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Cocoa_GL_GetProcAddress(_THIS, const char *proc)
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slouken@1936
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{
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slouken@1936
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return SDL_LoadFunction(_this->gl_config.dll_handle, proc);
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slouken@1936
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}
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slouken@1936
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slouken@3057
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void
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Cocoa_GL_UnloadLibrary(_THIS)
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slouken@1936
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{
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slouken@3057
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SDL_UnloadObject(_this->gl_config.dll_handle);
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slouken@3057
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_this->gl_config.dll_handle = NULL;
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slouken@1936
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}
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slouken@1936
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SDL_GLContext
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Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
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slouken@1936
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{
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icculus@6567
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const int wantver = (_this->gl_config.major_version << 8) |
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icculus@6567
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(_this->gl_config.minor_version);
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icculus@6567
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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slouken@6848
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NSAutoreleasePool *pool;
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slouken@5246
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SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
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slouken@1936
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SDL_DisplayData *displaydata = (SDL_DisplayData *)display->driverdata;
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slouken@1936
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NSOpenGLPixelFormatAttribute attr[32];
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slouken@1936
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NSOpenGLPixelFormat *fmt;
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jorgen@7594
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SDLOpenGLContext *context;
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flibitijibibo@7152
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NSOpenGLContext *share_context = nil;
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slouken@1936
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int i = 0;
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slouken@1936
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icculus@6567
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if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) {
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icculus@6567
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SDL_SetError ("OpenGL ES not supported on this platform");
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icculus@6567
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return NULL;
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icculus@6567
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}
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icculus@6567
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icculus@6567
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/* Sadly, we'll have to update this as life progresses, since we need to
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icculus@6567
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set an enum for context profiles, not a context version number */
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icculus@6567
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if (wantver > 0x0302) {
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icculus@6567
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SDL_SetError ("OpenGL > 3.2 is not supported on this platform");
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icculus@6567
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return NULL;
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icculus@6567
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}
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icculus@6567
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slouken@6848
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pool = [[NSAutoreleasePool alloc] init];
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slouken@6848
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slouken@6848
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/* specify a profile if we're on Lion (10.7) or later. */
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slouken@6848
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if (data->osversion >= 0x1070) {
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slouken@6848
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147 |
NSOpenGLPixelFormatAttribute profile = kCGLOGLPVersion_Legacy;
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slouken@6848
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if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_CORE) {
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slouken@6848
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if (wantver == 0x0302) {
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slouken@6848
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profile = kCGLOGLPVersion_3_2_Core;
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alexey@6832
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}
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alexey@6832
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152 |
}
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slouken@6848
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153 |
attr[i++] = kCGLPFAOpenGLProfile;
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slouken@6848
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attr[i++] = profile;
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slouken@6848
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155 |
}
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slouken@6848
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slouken@6848
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attr[i++] = NSOpenGLPFAColorSize;
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slouken@6848
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attr[i++] = SDL_BYTESPERPIXEL(display->current_mode.format)*8;
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slouken@6848
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slouken@6848
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attr[i++] = NSOpenGLPFADepthSize;
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slouken@6848
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attr[i++] = _this->gl_config.depth_size;
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slouken@6848
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slouken@6848
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if (_this->gl_config.double_buffer) {
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slouken@6848
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attr[i++] = NSOpenGLPFADoubleBuffer;
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slouken@6848
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}
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slouken@6848
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slouken@6848
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if (_this->gl_config.stereo) {
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slouken@6848
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attr[i++] = NSOpenGLPFAStereo;
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slouken@6848
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}
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slouken@6848
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170 |
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slouken@6848
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171 |
if (_this->gl_config.stencil_size) {
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slouken@6848
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attr[i++] = NSOpenGLPFAStencilSize;
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slouken@6848
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attr[i++] = _this->gl_config.stencil_size;
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slouken@6848
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174 |
}
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slouken@6848
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175 |
|
slouken@6848
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176 |
if ((_this->gl_config.accum_red_size +
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slouken@6848
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177 |
_this->gl_config.accum_green_size +
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slouken@6848
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178 |
_this->gl_config.accum_blue_size +
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slouken@6848
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_this->gl_config.accum_alpha_size) > 0) {
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slouken@6848
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attr[i++] = NSOpenGLPFAAccumSize;
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slouken@6848
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attr[i++] = _this->gl_config.accum_red_size + _this->gl_config.accum_green_size + _this->gl_config.accum_blue_size + _this->gl_config.accum_alpha_size;
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slouken@6848
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182 |
}
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slouken@6848
|
183 |
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slouken@6848
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184 |
if (_this->gl_config.multisamplebuffers) {
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slouken@6848
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185 |
attr[i++] = NSOpenGLPFASampleBuffers;
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slouken@6848
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186 |
attr[i++] = _this->gl_config.multisamplebuffers;
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slouken@6848
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187 |
}
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alexey@6832
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slouken@6848
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189 |
if (_this->gl_config.multisamplesamples) {
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slouken@6848
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190 |
attr[i++] = NSOpenGLPFASamples;
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slouken@6848
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191 |
attr[i++] = _this->gl_config.multisamplesamples;
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slouken@6848
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192 |
attr[i++] = NSOpenGLPFANoRecovery;
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slouken@6848
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193 |
}
|
slouken@6848
|
194 |
|
slouken@6848
|
195 |
if (_this->gl_config.accelerated >= 0) {
|
slouken@6848
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196 |
if (_this->gl_config.accelerated) {
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slouken@6848
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197 |
attr[i++] = NSOpenGLPFAAccelerated;
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slouken@6848
|
198 |
} else {
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slouken@6848
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199 |
attr[i++] = NSOpenGLPFARendererID;
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slouken@6848
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200 |
attr[i++] = kCGLRendererGenericFloatID;
|
alexey@6832
|
201 |
}
|
slouken@6848
|
202 |
}
|
slouken@6848
|
203 |
|
slouken@6848
|
204 |
attr[i++] = NSOpenGLPFAScreenMask;
|
slouken@6848
|
205 |
attr[i++] = CGDisplayIDToOpenGLDisplayMask(displaydata->display);
|
slouken@6848
|
206 |
attr[i] = 0;
|
slouken@6848
|
207 |
|
slouken@6848
|
208 |
fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
|
slouken@6848
|
209 |
if (fmt == nil) {
|
slouken@6848
|
210 |
SDL_SetError ("Failed creating OpenGL pixel format");
|
slouken@6848
|
211 |
[pool release];
|
slouken@6848
|
212 |
return NULL;
|
slouken@6848
|
213 |
}
|
slouken@6848
|
214 |
|
flibitijibibo@7152
|
215 |
if (_this->gl_config.share_with_current_context) {
|
slouken@7412
|
216 |
share_context = (NSOpenGLContext*)SDL_GL_GetCurrentContext();
|
flibitijibibo@7152
|
217 |
}
|
flibitijibibo@7152
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218 |
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jorgen@7594
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219 |
context = [[SDLOpenGLContext alloc] initWithFormat:fmt shareContext:share_context];
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slouken@6848
|
220 |
|
slouken@6848
|
221 |
[fmt release];
|
slouken@6848
|
222 |
|
slouken@6848
|
223 |
if (context == nil) {
|
slouken@6848
|
224 |
SDL_SetError ("Failed creating OpenGL context");
|
slouken@6848
|
225 |
[pool release];
|
slouken@6848
|
226 |
return NULL;
|
slouken@6848
|
227 |
}
|
slouken@6848
|
228 |
|
slouken@6848
|
229 |
[pool release];
|
slouken@1936
|
230 |
|
slouken@2178
|
231 |
if ( Cocoa_GL_MakeCurrent(_this, window, context) < 0 ) {
|
slouken@2178
|
232 |
Cocoa_GL_DeleteContext(_this, context);
|
slouken@2178
|
233 |
return NULL;
|
slouken@2178
|
234 |
}
|
slouken@2178
|
235 |
|
slouken@2178
|
236 |
return context;
|
slouken@1936
|
237 |
}
|
slouken@1936
|
238 |
|
slouken@1936
|
239 |
int
|
slouken@1936
|
240 |
Cocoa_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
|
slouken@1936
|
241 |
{
|
slouken@6848
|
242 |
NSAutoreleasePool *pool;
|
slouken@6848
|
243 |
|
slouken@6848
|
244 |
pool = [[NSAutoreleasePool alloc] init];
|
slouken@6848
|
245 |
|
slouken@6848
|
246 |
if (context) {
|
slouken@6848
|
247 |
SDL_WindowData *windowdata = (SDL_WindowData *)window->driverdata;
|
jorgen@7594
|
248 |
SDLOpenGLContext *nscontext = (SDLOpenGLContext *)context;
|
slouken@7408
|
249 |
windowdata->nscontext = nscontext;
|
icculus@7347
|
250 |
if ([nscontext view] != [windowdata->nswindow contentView]) {
|
jorgen@7085
|
251 |
[nscontext setView:[windowdata->nswindow contentView]];
|
jorgen@7594
|
252 |
[nscontext scheduleUpdate];
|
slouken@1973
|
253 |
}
|
jorgen@7594
|
254 |
|
jorgen@7594
|
255 |
[nscontext updateIfNeeded];
|
slouken@6848
|
256 |
[nscontext makeCurrentContext];
|
slouken@6848
|
257 |
} else {
|
slouken@6848
|
258 |
[NSOpenGLContext clearCurrentContext];
|
slouken@1936
|
259 |
}
|
slouken@1936
|
260 |
|
slouken@6848
|
261 |
[pool release];
|
slouken@1936
|
262 |
return 0;
|
slouken@1936
|
263 |
}
|
slouken@1936
|
264 |
|
slouken@1936
|
265 |
int
|
slouken@1936
|
266 |
Cocoa_GL_SetSwapInterval(_THIS, int interval)
|
slouken@1936
|
267 |
{
|
slouken@6848
|
268 |
NSAutoreleasePool *pool;
|
slouken@1936
|
269 |
NSOpenGLContext *nscontext;
|
slouken@2703
|
270 |
GLint value;
|
slouken@1936
|
271 |
int status;
|
slouken@1936
|
272 |
|
slouken@6848
|
273 |
pool = [[NSAutoreleasePool alloc] init];
|
slouken@6848
|
274 |
|
jorgen@7594
|
275 |
nscontext = (NSOpenGLContext*)SDL_GL_GetCurrentContext();
|
slouken@6848
|
276 |
if (nscontext != nil) {
|
slouken@6848
|
277 |
value = interval;
|
slouken@6848
|
278 |
[nscontext setValues:&value forParameter:NSOpenGLCPSwapInterval];
|
slouken@6848
|
279 |
status = 0;
|
slouken@6848
|
280 |
} else {
|
icculus@7037
|
281 |
status = SDL_SetError("No current OpenGL context");
|
slouken@1936
|
282 |
}
|
slouken@1936
|
283 |
|
slouken@6848
|
284 |
[pool release];
|
slouken@1936
|
285 |
return status;
|
slouken@1936
|
286 |
}
|
slouken@1936
|
287 |
|
slouken@1936
|
288 |
int
|
slouken@1936
|
289 |
Cocoa_GL_GetSwapInterval(_THIS)
|
slouken@1936
|
290 |
{
|
slouken@6848
|
291 |
NSAutoreleasePool *pool;
|
slouken@1936
|
292 |
NSOpenGLContext *nscontext;
|
slouken@2703
|
293 |
GLint value;
|
icculus@6382
|
294 |
int status = 0;
|
slouken@1936
|
295 |
|
slouken@6848
|
296 |
pool = [[NSAutoreleasePool alloc] init];
|
slouken@6848
|
297 |
|
jorgen@7594
|
298 |
nscontext = (NSOpenGLContext*)SDL_GL_GetCurrentContext();
|
slouken@6848
|
299 |
if (nscontext != nil) {
|
slouken@6848
|
300 |
[nscontext getValues:&value forParameter:NSOpenGLCPSwapInterval];
|
slouken@6848
|
301 |
status = (int)value;
|
slouken@1936
|
302 |
}
|
slouken@1936
|
303 |
|
slouken@6848
|
304 |
[pool release];
|
slouken@1936
|
305 |
return status;
|
slouken@1936
|
306 |
}
|
slouken@1936
|
307 |
|
slouken@1936
|
308 |
void
|
slouken@1936
|
309 |
Cocoa_GL_SwapWindow(_THIS, SDL_Window * window)
|
slouken@1936
|
310 |
{
|
slouken@6848
|
311 |
NSAutoreleasePool *pool;
|
slouken@7408
|
312 |
SDL_WindowData *windowdata = (SDL_WindowData *)window->driverdata;
|
jorgen@7594
|
313 |
SDLOpenGLContext *nscontext = windowdata->nscontext;
|
slouken@1936
|
314 |
|
slouken@6848
|
315 |
pool = [[NSAutoreleasePool alloc] init];
|
slouken@6848
|
316 |
|
slouken@7408
|
317 |
[nscontext flushBuffer];
|
jorgen@7594
|
318 |
[nscontext updateIfNeeded];
|
slouken@6848
|
319 |
|
slouken@6848
|
320 |
[pool release];
|
slouken@1936
|
321 |
}
|
slouken@1936
|
322 |
|
slouken@1936
|
323 |
void
|
slouken@1936
|
324 |
Cocoa_GL_DeleteContext(_THIS, SDL_GLContext context)
|
slouken@1936
|
325 |
{
|
slouken@6848
|
326 |
NSAutoreleasePool *pool;
|
slouken@1936
|
327 |
NSOpenGLContext *nscontext = (NSOpenGLContext *)context;
|
slouken@1936
|
328 |
|
slouken@6848
|
329 |
pool = [[NSAutoreleasePool alloc] init];
|
slouken@6848
|
330 |
|
slouken@6848
|
331 |
[nscontext clearDrawable];
|
slouken@6848
|
332 |
[nscontext release];
|
slouken@6848
|
333 |
|
slouken@6848
|
334 |
[pool release];
|
slouken@1936
|
335 |
}
|
slouken@1936
|
336 |
|
slouken@1952
|
337 |
#endif /* SDL_VIDEO_OPENGL_CGL */
|
slouken@1936
|
338 |
|
slouken@1936
|
339 |
/* vi: set ts=4 sw=4 expandtab: */
|