--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/libsdl-trunk/src/video/quartz/SDL_QuartzGL.m Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,281 @@
+/*
+ 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_config.h"
+
+#include "SDL_QuartzVideo.h"
+
+/*
+ * GL_ARB_Multisample is supposed to be available in 10.1, according to Apple:
+ *
+ * http://developer.apple.com/opengl/extensions.html#GL_ARB_multisample
+ *
+ * ...but it isn't in the system headers, according to Sam:
+ *
+ * http://www.libsdl.org/pipermail/sdl/2003-December/058335.html
+ *
+ * These are normally enums and not #defines in the system headers.
+ *
+ * --ryan.
+ */
+#if (MAC_OS_X_VERSION_MAX_ALLOWED < 1020)
+#define NSOpenGLPFASampleBuffers ((NSOpenGLPixelFormatAttribute) 55)
+#define NSOpenGLPFASamples ((NSOpenGLPixelFormatAttribute) 56)
+#endif
+
+
+@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 a GL library hasn't been loaded at this point, load the default. */
+ if (!this->gl_config.driver_loaded) {
+ if (QZ_GL_LoadLibrary(this, NULL) == -1)
+ return 0;
+ }
+
+ 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 ( (this->gl_config.accum_red_size +
+ this->gl_config.accum_green_size +
+ this->gl_config.accum_blue_size +
+ this->gl_config.accum_alpha_size) > 0 ) {
+ attr[i++] = NSOpenGLPFAAccumSize;
+ 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;
+ }
+
+ 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;
+ attr[i++] = NSOpenGLPFANoRecovery;
+ }
+
+ if ( this->gl_config.accelerated > 0 ) {
+ attr[i++] = NSOpenGLPFAAccelerated;
+ }
+
+ 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];
+
+ [ fmt release ];
+
+ if (gl_context == nil) {
+ SDL_SetError ("Failed creating OpenGL context");
+ return 0;
+ }
+
+ /* Synchronize QZ_GL_SwapBuffers() to vertical retrace.
+ * (Apple's documentation is not completely clear about what this setting
+ * exactly does, IMHO - for a detailed explanation see
+ * http://lists.apple.com/archives/mac-opengl/2006/Jan/msg00080.html )
+ */
+ if ( this->gl_config.swap_control >= 0 ) {
+ long value;
+ value = this->gl_config.swap_control;
+ [ gl_context setValues: &value forParameter: NSOpenGLCPSwapInterval ];
+ }
+
+ /*
+ * 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. */
+
+ return 1;
+}
+
+void QZ_TearDownOpenGL (_THIS) {
+
+ [ NSOpenGLContext clearCurrentContext ];
+ [ gl_context clearDrawable ];
+ [ gl_context release ];
+}
+
+
+/* SDL OpenGL functions */
+static const char *DEFAULT_OPENGL_LIB_NAME =
+ "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
+
+int QZ_GL_LoadLibrary (_THIS, const char *location) {
+ if ( gl_context != NULL ) {
+ SDL_SetError("OpenGL context already created");
+ return -1;
+ }
+
+ if (opengl_library != NULL)
+ SDL_UnloadObject(opengl_library);
+
+ if (location == NULL)
+ location = DEFAULT_OPENGL_LIB_NAME;
+
+ opengl_library = SDL_LoadObject(location);
+ if (opengl_library != NULL) {
+ this->gl_config.driver_loaded = 1;
+ return 0;
+ }
+
+ this->gl_config.driver_loaded = 0;
+ return -1;
+}
+
+void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
+ return SDL_LoadFunction(opengl_library, proc);
+}
+
+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;
+ }
+ case SDL_GL_ACCELERATED_VISUAL:
+ {
+ long val;
+ /* FIXME: How do we get this information here?
+ [fmt getValues: &val forAttribute: NSOpenGLPFAAccelerated attr forVirtualScreen: 0];
+ */
+ val = (this->gl_config.accelerated != 0);;
+ *value = val;
+ return 0;
+ }
+ case SDL_GL_SWAP_CONTROL:
+ {
+ long val;
+ [ gl_context getValues: &val forParameter: NSOpenGLCPSwapInterval ];
+ *value = val;
+ 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 ];
+}