Import SDL release-1.2.15

Change-Id: I505c4aea24325cad475f217db5589814b4c75dbf

1 files changed, 197 insertions, 0 deletions

diff --git a/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c b/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c
new file mode 100644
index 0000000..b7ded9b
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c
@@ -0,0 +1,197 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2012 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* AGL implementation of SDL OpenGL support */
+
+#include "SDL_lowvideo.h"
+#include "SDL_macgl_c.h"
+#include "SDL_loadso.h"
+
+
+/* krat: adding OpenGL support */
+int Mac_GL_Init(_THIS)
+{
+#if SDL_VIDEO_OPENGL
+	AGLPixelFormat format;
+   	int i = 0;
+	GLint attributes [ 26 ]; /* 26 is max possible in this setup */
+	GLboolean noerr;
+   
+	/* load the gl driver from a default path */
+	if ( ! this->gl_config.driver_loaded ) {
+		/* no driver has been loaded, use default (ourselves) */
+		if ( Mac_GL_LoadLibrary(this, NULL) < 0 ) {
+			return(-1);
+		}
+	}
+
+	attributes[i++] = AGL_RGBA;
+	if ( this->gl_config.red_size   != 0 &&
+	     this->gl_config.blue_size  != 0 &&
+	     this->gl_config.green_size != 0 ) {
+		attributes[i++] = AGL_RED_SIZE;
+		attributes[i++] = this->gl_config.red_size;
+		attributes[i++] = AGL_GREEN_SIZE;
+		attributes[i++] = this->gl_config.green_size;
+		attributes[i++] = AGL_BLUE_SIZE;
+		attributes[i++] = this->gl_config.blue_size;
+		attributes[i++] = AGL_ALPHA_SIZE;
+		attributes[i++] = this->gl_config.alpha_size;
+	}
+	if ( this->gl_config.double_buffer ) {
+		attributes[i++] = AGL_DOUBLEBUFFER;
+	}
+	if ( this->gl_config.depth_size != 0 ) {
+		attributes[i++] = AGL_DEPTH_SIZE;
+		attributes[i++] = this->gl_config.depth_size;
+	}	
+	if ( this->gl_config.stencil_size != 0 ) {
+		attributes[i++] = AGL_STENCIL_SIZE;
+		attributes[i++] = this->gl_config.stencil_size;
+	}
+	if ( this->gl_config.accum_red_size   != 0 &&
+	     this->gl_config.accum_blue_size  != 0 &&
+	     this->gl_config.accum_green_size != 0 ) {
+		
+		attributes[i++] = AGL_ACCUM_RED_SIZE;
+		attributes[i++] = this->gl_config.accum_red_size;
+		attributes[i++] = AGL_ACCUM_GREEN_SIZE;
+		attributes[i++] = this->gl_config.accum_green_size;
+		attributes[i++] = AGL_ACCUM_BLUE_SIZE;
+		attributes[i++] = this->gl_config.accum_blue_size;
+		attributes[i++] = AGL_ACCUM_ALPHA_SIZE;
+		attributes[i++] = this->gl_config.accum_alpha_size;
+	}
+	if ( this->gl_config.stereo ) {
+		attributes[i++] = AGL_STEREO;
+	}
+#if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB)
+	if ( this->gl_config.multisamplebuffers != 0 ) {
+		attributes[i++] = AGL_SAMPLE_BUFFERS_ARB;
+		attributes[i++] = this->gl_config.multisamplebuffers;
+	}	
+	if ( this->gl_config.multisamplesamples != 0 ) {
+		attributes[i++] = AGL_SAMPLES_ARB;
+		attributes[i++] = this->gl_config.multisamplesamples;
+	}	
+#endif
+	if ( this->gl_config.accelerated > 0 ) {
+		attributes[i++] = AGL_ACCELERATED;
+		attributes[i++] = AGL_NO_RECOVERY;
+	}
+
+	attributes[i++] = AGL_ALL_RENDERERS;
+	attributes[i]	= AGL_NONE;
+
+	format = aglChoosePixelFormat(NULL, 0, attributes);
+	if ( format == NULL ) {
+		SDL_SetError("Couldn't match OpenGL desired format");
+		return(-1);
+	}
+
+	glContext = aglCreateContext(format, NULL);
+	if ( glContext == NULL ) {
+		SDL_SetError("Couldn't create OpenGL context");
+		return(-1);
+	}
+	aglDestroyPixelFormat(format);
+
+    #if  TARGET_API_MAC_CARBON
+	noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window));
+    #else
+	noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window);
+    #endif
+    
+	if(!noerr) {
+		SDL_SetError("Unable to bind GL context to window");
+		return(-1);
+	}
+	return(0);
+#else
+	SDL_SetError("OpenGL support not configured");
+	return(-1);
+#endif
+}
+
+void Mac_GL_Quit(_THIS)
+{
+#if SDL_VIDEO_OPENGL
+	if ( glContext != NULL ) {
+		aglSetCurrentContext(NULL);
+		aglSetDrawable(glContext, NULL);
+		aglDestroyContext(glContext);		
+		glContext = NULL;
+	}
+#endif
+}
+
+#if SDL_VIDEO_OPENGL
+
+/* Make the current context active */
+int Mac_GL_MakeCurrent(_THIS)
+{
+	int retval;
+
+	retval = 0;
+	if( ! aglSetCurrentContext(glContext) ) {
+		SDL_SetError("Unable to make GL context current");
+		retval = -1;
+	}
+	return(retval);
+}
+
+void Mac_GL_SwapBuffers(_THIS)
+{
+	aglSwapBuffers(glContext);
+}
+
+int Mac_GL_LoadLibrary(_THIS, const char *location)
+{
+	if (location == NULL)
+#if __MACH__
+		location = "/System/Library/Frameworks/OpenGL.framework/OpenGL";
+#else
+		location = "OpenGLLibrary";
+#endif
+
+	this->hidden->libraryHandle = SDL_LoadObject(location);
+
+	this->gl_config.driver_loaded = 1;
+	return (this->hidden->libraryHandle != NULL) ? 0 : -1;
+}
+
+void Mac_GL_UnloadLibrary(_THIS)
+{
+	SDL_UnloadObject(this->hidden->libraryHandle);
+
+	this->hidden->libraryHandle = NULL;
+	this->gl_config.driver_loaded = 0;
+}
+
+void* Mac_GL_GetProcAddress(_THIS, const char *proc)
+{
+	return SDL_LoadFunction( this->hidden->libraryHandle, proc );
+}
+
+#endif /* SDL_VIDEO_OPENGL */
+