Mercurial > sdl-ios-xcode
diff src/video/quartz/SDL_QuartzGL.m @ 761:c5b2b6d2d1fe
Date: Wed, 31 Dec 2003 21:55:30 +0100
From: Max Horn
Subject: SDL: video/quartz cleanup
while doing some experimental changes in the quartz code, I was annoyed
by having to recompile that one big .o file over and over again. So I
decided to finally realize one TODO: properly splitting the code over
multiple files :-).
With two exceptions, I didn't make code changes, only rearranged files
and added new headers. Since there are several new files, making a
patch didn't work out so well, so I decided to just send you all the
new & modified files.
The one source change I made is related to showing/hiding the mouse. I
renamed cursor_visible to cursor_should_be_visible and cursor_hidden to
cursor_visible; I think that makes reading the code easier.
Then I added two new functions: QZ_ShowMouse and QZ_HideMouse. They
help manage cursor_visible (the former 'cursor_hidden'). Finally I
replaced the Carbon ShowCursor/HiderCuror calls by [NSCursor hide] and
[NSCursor unhide]. The API docs are not conclusive, but it might be
that with those the "cursor_visible" (former 'cursor_hidden') hack may
not be necessary anymore; however so far I didn't test this hypothesis,
so I left that in.
The other change was to remove in_foreground and use [NSApp isActive]
instead: Manually keeping track of whether we are in the foreground is
error prone. This should work better in some corner cases.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 04 Jan 2004 14:55:35 +0000 |
parents | |
children | ac44ddb84f6f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/quartz/SDL_QuartzGL.m Sun Jan 04 14:55:35 2004 +0000 @@ -0,0 +1,228 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2003 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +#include "SDL_QuartzVideo.h" + +/* + This is a workaround to directly access NSOpenGLContext's CGL context + We need this to check for errors NSOpenGLContext doesn't support +*/ +@interface NSOpenGLContext (CGLContextAccess) +- (CGLContextObj) cglContext; +@end + +@implementation NSOpenGLContext (CGLContextAccess) +- (CGLContextObj) cglContext; +{ + return _contextAuxiliary; +} +@end + +/* OpenGL helper functions (used internally) */ + +int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) { + + NSOpenGLPixelFormatAttribute attr[32]; + NSOpenGLPixelFormat *fmt; + int i = 0; + int colorBits = bpp; + + if ( flags & SDL_FULLSCREEN ) { + + attr[i++] = NSOpenGLPFAFullScreen; + } + /* In windowed mode, the OpenGL pixel depth must match device pixel depth */ + else if ( colorBits != device_bpp ) { + + colorBits = device_bpp; + } + + attr[i++] = NSOpenGLPFAColorSize; + attr[i++] = colorBits; + + attr[i++] = NSOpenGLPFADepthSize; + attr[i++] = this->gl_config.depth_size; + + if ( this->gl_config.double_buffer ) { + attr[i++] = NSOpenGLPFADoubleBuffer; + } + + if ( this->gl_config.stereo ) { + attr[i++] = NSOpenGLPFAStereo; + } + + if ( this->gl_config.stencil_size != 0 ) { + attr[i++] = NSOpenGLPFAStencilSize; + attr[i++] = this->gl_config.stencil_size; + } + +#if NSOPENGL_CURRENT_VERSION > 1 /* What version should this be? */ + if ( this->gl_config.multisamplebuffers != 0 ) { + attr[i++] = NSOpenGLPFASampleBuffers; + attr[i++] = this->gl_config.multisamplebuffers; + } + + if ( this->gl_config.multisamplesamples != 0 ) { + attr[i++] = NSOpenGLPFASamples; + attr[i++] = this->gl_config.multisamplesamples; + } +#endif + + attr[i++] = NSOpenGLPFAScreenMask; + attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id); + attr[i] = 0; + + fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ]; + if (fmt == nil) { + SDL_SetError ("Failed creating OpenGL pixel format"); + return 0; + } + + gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt + shareContext:nil]; + + if (gl_context == nil) { + SDL_SetError ("Failed creating OpenGL context"); + return 0; + } + + /* + * Wisdom from Apple engineer in reference to UT2003's OpenGL performance: + * "You are blowing a couple of the internal OpenGL function caches. This + * appears to be happening in the VAO case. You can tell OpenGL to up + * the cache size by issuing the following calls right after you create + * the OpenGL context. The default cache size is 16." --ryan. + */ + + #ifndef GLI_ARRAY_FUNC_CACHE_MAX + #define GLI_ARRAY_FUNC_CACHE_MAX 284 + #endif + + #ifndef GLI_SUBMIT_FUNC_CACHE_MAX + #define GLI_SUBMIT_FUNC_CACHE_MAX 280 + #endif + + { + long cache_max = 64; + CGLContextObj ctx = [ gl_context cglContext ]; + CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max); + CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max); + } + + /* End Wisdom from Apple Engineer section. --ryan. */ + + /* Convince SDL that the GL "driver" is loaded */ + this->gl_config.driver_loaded = 1; + + [ fmt release ]; + + return 1; +} + +void QZ_TearDownOpenGL (_THIS) { + + [ NSOpenGLContext clearCurrentContext ]; + [ gl_context clearDrawable ]; + [ gl_context release ]; +} + + +/* SDL OpenGL functions */ + +int QZ_GL_LoadLibrary (_THIS, const char *location) { + this->gl_config.driver_loaded = 1; + return 1; +} + +void* QZ_GL_GetProcAddress (_THIS, const char *proc) { + + /* We may want to cache the bundleRef at some point */ + CFBundleRef bundle; + CFURLRef bundleURL = CFURLCreateWithFileSystemPath (kCFAllocatorDefault, + CFSTR("/System/Library/Frameworks/OpenGL.framework"), kCFURLPOSIXPathStyle, true); + + CFStringRef functionName = CFStringCreateWithCString + (kCFAllocatorDefault, proc, kCFStringEncodingASCII); + + void *function; + + bundle = CFBundleCreate (kCFAllocatorDefault, bundleURL); + assert (bundle != NULL); + + function = CFBundleGetFunctionPointerForName (bundle, functionName); + + CFRelease ( bundleURL ); + CFRelease ( functionName ); + CFRelease ( bundle ); + + return function; +} + +int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) { + + GLenum attr = 0; + + QZ_GL_MakeCurrent (this); + + switch (attrib) { + case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break; + case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break; + case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break; + case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break; + case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break; + case SDL_GL_DEPTH_SIZE: attr = GL_DEPTH_BITS; break; + case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break; + case SDL_GL_ACCUM_RED_SIZE: attr = GL_ACCUM_RED_BITS; break; + case SDL_GL_ACCUM_GREEN_SIZE: attr = GL_ACCUM_GREEN_BITS; break; + case SDL_GL_ACCUM_BLUE_SIZE: attr = GL_ACCUM_BLUE_BITS; break; + case SDL_GL_ACCUM_ALPHA_SIZE: attr = GL_ACCUM_ALPHA_BITS; break; + case SDL_GL_STEREO: attr = GL_STEREO; break; + case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break; + case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break; + case SDL_GL_BUFFER_SIZE: + { + GLint bits = 0; + GLint component; + + /* there doesn't seem to be a single flag in OpenGL for this! */ + glGetIntegerv (GL_RED_BITS, &component); bits += component; + glGetIntegerv (GL_GREEN_BITS,&component); bits += component; + glGetIntegerv (GL_BLUE_BITS, &component); bits += component; + glGetIntegerv (GL_ALPHA_BITS, &component); bits += component; + + *value = bits; + } + return 0; + } + + glGetIntegerv (attr, (GLint *)value); + return 0; +} + +int QZ_GL_MakeCurrent (_THIS) { + [ gl_context makeCurrentContext ]; + return 0; +} + +void QZ_GL_SwapBuffers (_THIS) { + [ gl_context flushBuffer ]; +}