src/video/x11/SDL_x11gl.c
author Sam Lantinga <slouken@libsdl.org>
Sat, 10 Oct 2009 10:10:36 +0000
branchSDL-1.2
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2009 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_x11video.h"
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#include "../../events/SDL_events_c.h"
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#include "SDL_x11dga_c.h"
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#include "SDL_x11gl_c.h"
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#if defined(__IRIX__)
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/* IRIX doesn't have a GL library versioning system */
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#define DEFAULT_OPENGL	"libGL.so"
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#elif defined(__MACOSX__)
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#define DEFAULT_OPENGL	"/usr/X11R6/lib/libGL.1.dylib"
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#elif defined(__QNXNTO__)
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#define DEFAULT_OPENGL	"libGL.so.3"
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#elif defined(__OpenBSD__)
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#define DEFAULT_OPENGL	"libGL.so.4.0"
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#else
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#define DEFAULT_OPENGL	"libGL.so.1"
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#endif
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#ifndef GLX_ARB_multisample
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#define GLX_ARB_multisample
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#define GLX_SAMPLE_BUFFERS_ARB             100000
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#define GLX_SAMPLES_ARB                    100001
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#endif
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/* GLX_EXT_visual_rating stuff that might not be in the system headers... */
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#ifndef GLX_VISUAL_CAVEAT_EXT
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#define GLX_VISUAL_CAVEAT_EXT              0x20
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#endif
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#ifndef GLX_NONE_EXT
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#define GLX_NONE_EXT                       0x8000
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#endif
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#ifndef GLX_SLOW_VISUAL_EXT
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#define GLX_SLOW_VISUAL_EXT                0x8001
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#endif
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#ifndef GLX_NON_CONFORMANT_VISUAL_EXT
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#define GLX_NON_CONFORMANT_VISUAL_EXT      0x800D
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#endif
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#if SDL_VIDEO_OPENGL_GLX
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static int glXExtensionSupported(_THIS, const char *extension)
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{
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	const char *extensions;
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	const char *start;
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	const char *where, *terminator;
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	/* Extension names should not have spaces. */
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	where = SDL_strchr(extension, ' ');
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	if ( where || *extension == '\0' ) {
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	      return 0;
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	}
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	extensions = this->gl_data->glXQueryExtensionsString(GFX_Display,SDL_Screen);
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	/* It takes a bit of care to be fool-proof about parsing the
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	 * OpenGL extensions string. Don't be fooled by sub-strings, etc.
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	 */
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	/* http://bugs.debian.org/537487 */
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	if (extensions == NULL) {
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	      return 0;
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	}
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	start = extensions;
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	for (;;) {
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		where = SDL_strstr(start, extension);
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		if (!where) break;
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		terminator = where + strlen(extension);
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		if (where == start || *(where - 1) == ' ')
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	        if (*terminator == ' ' || *terminator == '\0') return 1;
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		start = terminator;
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	}
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	return 0;
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}
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#endif /* SDL_VIDEO_OPENGL_GLX */
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XVisualInfo *X11_GL_GetVisual(_THIS)
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{
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#if SDL_VIDEO_OPENGL_GLX
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	/* 64 seems nice. */
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	int attribs[64];
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	int i;
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	/* load the gl driver from a default path */
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	if ( ! this->gl_config.driver_loaded ) {
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	        /* no driver has been loaded, use default (ourselves) */
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	        if ( X11_GL_LoadLibrary(this, NULL) < 0 ) {
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		        return NULL;
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		}
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	}
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	/* See if we already have a window which we must use */
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	if ( SDL_windowid ) {
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		XWindowAttributes a;
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		XVisualInfo vi_in;
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		int out_count;
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		XGetWindowAttributes(SDL_Display, SDL_Window, &a);
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		vi_in.screen = SDL_Screen;
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		vi_in.visualid = XVisualIDFromVisual(a.visual);
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		glx_visualinfo = XGetVisualInfo(SDL_Display,
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	                     VisualScreenMask|VisualIDMask, &vi_in, &out_count);
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		return glx_visualinfo;
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	}
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        /* Setup our GLX attributes according to the gl_config. */
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	i = 0;
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	attribs[i++] = GLX_RGBA;
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	attribs[i++] = GLX_RED_SIZE;
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	attribs[i++] = this->gl_config.red_size;
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	attribs[i++] = GLX_GREEN_SIZE;
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	attribs[i++] = this->gl_config.green_size;
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	attribs[i++] = GLX_BLUE_SIZE;
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	attribs[i++] = this->gl_config.blue_size;
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	if( this->gl_config.alpha_size ) {
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		attribs[i++] = GLX_ALPHA_SIZE;
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		attribs[i++] = this->gl_config.alpha_size;
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	}
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	if( this->gl_config.buffer_size ) {
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		attribs[i++] = GLX_BUFFER_SIZE;
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		attribs[i++] = this->gl_config.buffer_size;
0
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	}
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	if( this->gl_config.double_buffer ) {
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		attribs[i++] = GLX_DOUBLEBUFFER;
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	}
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	attribs[i++] = GLX_DEPTH_SIZE;
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	attribs[i++] = this->gl_config.depth_size;
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	if( this->gl_config.stencil_size ) {
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		attribs[i++] = GLX_STENCIL_SIZE;
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		attribs[i++] = this->gl_config.stencil_size;
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	}
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	if( this->gl_config.accum_red_size ) {
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		attribs[i++] = GLX_ACCUM_RED_SIZE;
0
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		attribs[i++] = this->gl_config.accum_red_size;
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	}
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	if( this->gl_config.accum_green_size ) {
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		attribs[i++] = GLX_ACCUM_GREEN_SIZE;
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		attribs[i++] = this->gl_config.accum_green_size;
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	}
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	if( this->gl_config.accum_blue_size ) {
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		attribs[i++] = GLX_ACCUM_BLUE_SIZE;
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		attribs[i++] = this->gl_config.accum_blue_size;
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	}
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	if( this->gl_config.accum_alpha_size ) {
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		attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
0
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		attribs[i++] = this->gl_config.accum_alpha_size;
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	}
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	if( this->gl_config.stereo ) {
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		attribs[i++] = GLX_STEREO;
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	}
655
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656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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	if( this->gl_config.multisamplebuffers ) {
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		attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
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		attribs[i++] = this->gl_config.multisamplebuffers;
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	}
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	if( this->gl_config.multisamplesamples ) {
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		attribs[i++] = GLX_SAMPLES_ARB;
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		attribs[i++] = this->gl_config.multisamplesamples;
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	}
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	if( this->gl_config.accelerated >= 0 &&
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	    glXExtensionSupported(this, "GLX_EXT_visual_rating") ) {
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		attribs[i++] = GLX_VISUAL_CAVEAT_EXT;
1841
0495a8e98595 Use the correct parameter for GLX_VISUAL_CAVEAT_EXT
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		attribs[i++] = GLX_NONE_EXT;
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	}
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0
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#ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */
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	if ( !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) {
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86885b40a53b Support SDL_VIDEO_X11_NODIRECTCOLOR for OpenGL visuals
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		attribs[i++] = GLX_X_VISUAL_TYPE;
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		attribs[i++] = GLX_DIRECT_COLOR;
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	}
0
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#endif
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	attribs[i++] = None;
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 	glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, 
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						  SDL_Screen, attribs);
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#ifdef GLX_DIRECT_COLOR
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	if( !glx_visualinfo && !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { /* No DirectColor visual?  Try again.. */
0
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		attribs[i-3] = None;
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 		glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, 
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						  SDL_Screen, attribs);
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	}
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#endif
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	if( !glx_visualinfo ) {
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		SDL_SetError( "Couldn't find matching GLX visual");
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		return NULL;
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   223
	}
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   224
/*
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	printf("Found GLX visual 0x%x\n", glx_visualinfo->visualid);
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   226
*/
0
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	return glx_visualinfo;
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#else
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	SDL_SetError("X11 driver not configured with OpenGL");
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	return NULL;
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#endif
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}
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int X11_GL_CreateWindow(_THIS, int w, int h)
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{
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	int retval;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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#if SDL_VIDEO_OPENGL_GLX
0
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	XSetWindowAttributes attributes;
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	unsigned long mask;
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	unsigned long black;
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	black = (glx_visualinfo->visual == DefaultVisual(SDL_Display,
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   243
						 	SDL_Screen))
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	       	? BlackPixel(SDL_Display, SDL_Screen) : 0;
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   245
	attributes.background_pixel = black;
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   246
	attributes.border_pixel = black;
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   247
	attributes.colormap = SDL_XColorMap;
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   248
	mask = CWBackPixel | CWBorderPixel | CWColormap;
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1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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	SDL_Window = XCreateWindow(SDL_Display, WMwindow,
0
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   251
			0, 0, w, h, 0, glx_visualinfo->depth,
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   252
			InputOutput, glx_visualinfo->visual,
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   253
			mask, &attributes);
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   254
	if ( !SDL_Window ) {
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   255
		SDL_SetError("Could not create window");
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   256
		return -1;
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   257
	}
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   258
	retval = 0;
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   259
#else
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   260
	SDL_SetError("X11 driver not configured with OpenGL");
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   261
	retval = -1;
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   262
#endif
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   263
	return(retval);
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   264
}
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   266
int X11_GL_CreateContext(_THIS)
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   267
{
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   268
	int retval;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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   269
#if SDL_VIDEO_OPENGL_GLX
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0
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   271
	/* We do this to create a clean separation between X and GLX errors. */
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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   272
	XSync( SDL_Display, False );
0
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   273
	glx_context = this->gl_data->glXCreateContext(GFX_Display, 
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   274
				     glx_visualinfo, NULL, True);
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
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   275
	XSync( GFX_Display, False );
0
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3b2a92126f4d Implemented bug #2, 117:
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   277
	if ( glx_context == NULL ) {
0
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   278
		SDL_SetError("Could not create GL context");
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   279
		return(-1);
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   280
	}
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   281
	if ( X11_GL_MakeCurrent(this) < 0 ) {
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   282
		return(-1);
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   283
	}
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   284
	gl_active = 1;
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   285
3940
cb04355ffec4 Check correct glX extension name for swap_control, but it doesn't look like
Ryan C. Gordon <icculus@icculus.org>
parents: 3905
diff changeset
   286
	if ( !glXExtensionSupported(this, "GLX_SGI_swap_control") ) {
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   287
		this->gl_data->glXSwapIntervalSGI = NULL;
0
74212992fb08 Initial revision
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parents:
diff changeset
   288
	}
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   289
	if ( !glXExtensionSupported(this, "GLX_MESA_swap_control") ) {
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   290
		this->gl_data->glXSwapIntervalMESA = NULL;
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   291
	}
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   292
	if ( this->gl_config.swap_control >= 0 ) {
4290
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   293
        int rc = -1;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   294
		if ( this->gl_data->glXSwapIntervalMESA ) {
4290
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   295
			rc = this->gl_data->glXSwapIntervalMESA(this->gl_config.swap_control);
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   296
		} else if ( this->gl_data->glXSwapIntervalSGI ) {
4290
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   297
			rc = this->gl_data->glXSwapIntervalSGI(this->gl_config.swap_control);
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   298
		}
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   299
		if (rc == 0) {
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   300
			this->gl_data->swap_interval = this->gl_config.swap_control;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   301
		}
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   302
	}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   303
#else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   304
	SDL_SetError("X11 driver not configured with OpenGL");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   305
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   306
	if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   307
		retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   308
	} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   309
		retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   310
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   311
	return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   312
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   313
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   314
void X11_GL_Shutdown(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   315
{
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   316
#if SDL_VIDEO_OPENGL_GLX
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   317
	/* Clean up OpenGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   318
	if( glx_context ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   319
		this->gl_data->glXMakeCurrent(GFX_Display, None, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   320
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   321
		if (glx_context != NULL)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   322
			this->gl_data->glXDestroyContext(GFX_Display, glx_context);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   323
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   324
		glx_context = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   325
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   326
	gl_active = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   327
#endif /* SDL_VIDEO_OPENGL_GLX */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   328
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   329
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   330
#if SDL_VIDEO_OPENGL_GLX
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   331
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   332
/* Make the current context active */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   333
int X11_GL_MakeCurrent(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   334
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   335
	int retval;
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
   336
	
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   337
	retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   338
	if ( ! this->gl_data->glXMakeCurrent(GFX_Display,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   339
	                                     SDL_Window, glx_context) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   340
		SDL_SetError("Unable to make GL context current");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   341
		retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   342
	}
1575
3ba88cb7eb1b Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
   343
	XSync( GFX_Display, False );
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   344
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   345
	/* More Voodoo X server workarounds... Grr... */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   346
	SDL_Lock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   347
	X11_CheckDGAMouse(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   348
	SDL_Unlock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   349
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   350
	return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   351
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   352
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   353
/* Get attribute data from glX. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   354
int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   355
{
4092
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   356
	int retval = -1;
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   357
	int unsupported = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   358
	int glx_attrib = None;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   359
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   360
	switch( attrib ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   361
	    case SDL_GL_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   362
		glx_attrib = GLX_RED_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   363
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   364
	    case SDL_GL_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   365
		glx_attrib = GLX_GREEN_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   366
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   367
	    case SDL_GL_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   368
		glx_attrib = GLX_BLUE_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   369
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   370
	    case SDL_GL_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   371
		glx_attrib = GLX_ALPHA_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   372
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   373
	    case SDL_GL_DOUBLEBUFFER:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   374
		glx_attrib = GLX_DOUBLEBUFFER;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   375
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   376
	    case SDL_GL_BUFFER_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   377
		glx_attrib = GLX_BUFFER_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   378
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   379
	    case SDL_GL_DEPTH_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   380
		glx_attrib = GLX_DEPTH_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   381
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   382
	    case SDL_GL_STENCIL_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   383
		glx_attrib = GLX_STENCIL_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   384
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   385
	    case SDL_GL_ACCUM_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   386
		glx_attrib = GLX_ACCUM_RED_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   387
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   388
	    case SDL_GL_ACCUM_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   389
		glx_attrib = GLX_ACCUM_GREEN_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   390
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   391
	    case SDL_GL_ACCUM_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   392
		glx_attrib = GLX_ACCUM_BLUE_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   393
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   394
	    case SDL_GL_ACCUM_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   395
		glx_attrib = GLX_ACCUM_ALPHA_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   396
		break;
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   397
	    case SDL_GL_STEREO:
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   398
		glx_attrib = GLX_STEREO;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   399
		break;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
   400
 	    case SDL_GL_MULTISAMPLEBUFFERS:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
   401
 		glx_attrib = GLX_SAMPLE_BUFFERS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
   402
 		break;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
   403
 	    case SDL_GL_MULTISAMPLESAMPLES:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
   404
 		glx_attrib = GLX_SAMPLES_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
   405
 		break;
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   406
 	    case SDL_GL_ACCELERATED_VISUAL:
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   407
		if ( glXExtensionSupported(this, "GLX_EXT_visual_rating") ) {
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   408
			glx_attrib = GLX_VISUAL_CAVEAT_EXT;
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   409
			retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   410
			if ( *value == GLX_SLOW_VISUAL_EXT ) {
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   411
				*value = SDL_FALSE;
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   412
			} else {
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   413
				*value = SDL_TRUE;
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   414
			}
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   415
			return retval;
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   416
		} else {
4092
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   417
			unsupported = 1;
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   418
		}
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
   419
		break;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   420
	    case SDL_GL_SWAP_CONTROL:
4290
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   421
		if ( ( this->gl_data->glXSwapIntervalMESA ) ||
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   422
		     ( this->gl_data->glXSwapIntervalSGI ) ) {
485868a1c283 Cache the swap control setting, even on Mesa.
Ryan C. Gordon <icculus@icculus.org>
parents: 4289
diff changeset
   423
			*value = this->gl_data->swap_interval;
4268
d48035d857d3 Make SDL_GL_GetAttribute(SDL_GL_SWAP_CONTROL) work with GLX_SGI_swap_control.
Ryan C. Gordon <icculus@icculus.org>
parents: 4183
diff changeset
   424
			return 0;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   425
		} else {
4092
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   426
			unsupported = 1;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   427
		}
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   428
		break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   429
	    default:
4092
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   430
			unsupported = 1;
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   431
			break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   432
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   433
4092
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   434
	if (unsupported) {
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   435
		SDL_SetError("OpenGL attribute is unsupported on this system");
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   436
	} else {
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   437
		retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);
2b32a416d202 Set an error message when SDL_GL_SetAttribute() fails because we can't support
Ryan C. Gordon <icculus@icculus.org>
parents: 4023
diff changeset
   438
	}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   439
	return retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   440
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   441
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   442
void X11_GL_SwapBuffers(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   443
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   444
	this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   445
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   446
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   447
#endif /* SDL_VIDEO_OPENGL_GLX */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   448
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   449
#define OPENGL_REQUIRS_DLOPEN
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   450
#if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   451
#include <dlfcn.h>
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   452
#define GL_LoadObject(X)	dlopen(X, (RTLD_NOW|RTLD_GLOBAL))
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   453
#define GL_LoadFunction		dlsym
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   454
#define GL_UnloadObject		dlclose
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   455
#else
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   456
#define GL_LoadObject	SDL_LoadObject
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   457
#define GL_LoadFunction	SDL_LoadFunction
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   458
#define GL_UnloadObject	SDL_UnloadObject
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   459
#endif
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   460
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   461
void X11_GL_UnloadLibrary(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   462
{
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   463
#if SDL_VIDEO_OPENGL_GLX
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   464
	if ( this->gl_config.driver_loaded ) {
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
   465
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   466
		GL_UnloadObject(this->gl_config.dll_handle);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   467
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   468
		this->gl_data->glXGetProcAddress = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   469
		this->gl_data->glXChooseVisual = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   470
		this->gl_data->glXCreateContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   471
		this->gl_data->glXDestroyContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   472
		this->gl_data->glXMakeCurrent = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   473
		this->gl_data->glXSwapBuffers = NULL;
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   474
		this->gl_data->glXSwapIntervalSGI = NULL;
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   475
		this->gl_data->glXSwapIntervalMESA = NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   476
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   477
		this->gl_config.dll_handle = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   478
		this->gl_config.driver_loaded = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   479
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   480
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   481
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   482
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   483
#if SDL_VIDEO_OPENGL_GLX
1182
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   484
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   485
/* Passing a NULL path means load pointers from the application */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   486
int X11_GL_LoadLibrary(_THIS, const char* path) 
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   487
{
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
   488
	void* handle = NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   489
1182
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   490
	if ( gl_active ) {
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   491
		SDL_SetError("OpenGL context already created");
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   492
		return -1;
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   493
	}
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   494
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
   495
	if ( path == NULL ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1315
diff changeset
   496
		path = SDL_getenv("SDL_VIDEO_GL_DRIVER");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   497
		if ( path == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   498
			path = DEFAULT_OPENGL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   499
		}
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
   500
	}
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
   501
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   502
	handle = GL_LoadObject(path);
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   503
	if ( handle == NULL ) {
3905
0e0883cb7137 Add error message if not using SDL_LoadObject
Patrice Mandin <patmandin@gmail.com>
parents: 1880
diff changeset
   504
#if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
0e0883cb7137 Add error message if not using SDL_LoadObject
Patrice Mandin <patmandin@gmail.com>
parents: 1880
diff changeset
   505
		SDL_SetError("Failed loading %s", path);
0e0883cb7137 Add error message if not using SDL_LoadObject
Patrice Mandin <patmandin@gmail.com>
parents: 1880
diff changeset
   506
#else
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   507
		/* SDL_LoadObject() will call SDL_SetError() for us. */
3905
0e0883cb7137 Add error message if not using SDL_LoadObject
Patrice Mandin <patmandin@gmail.com>
parents: 1880
diff changeset
   508
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   509
		return -1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   510
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   511
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   512
	/* Unload the old driver and reset the pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   513
	X11_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   514
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   515
	/* Load new function pointers */
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   516
	this->gl_data->glXGetProcAddress =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   517
		(void *(*)(const GLubyte *)) GL_LoadFunction(handle, "glXGetProcAddressARB");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   518
	this->gl_data->glXChooseVisual =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   519
		(XVisualInfo *(*)(Display *, int, int *)) GL_LoadFunction(handle, "glXChooseVisual");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   520
	this->gl_data->glXCreateContext =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   521
		(GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) GL_LoadFunction(handle, "glXCreateContext");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   522
	this->gl_data->glXDestroyContext =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   523
		(void (*)(Display *, GLXContext)) GL_LoadFunction(handle, "glXDestroyContext");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   524
	this->gl_data->glXMakeCurrent =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   525
		(int (*)(Display *, GLXDrawable, GLXContext)) GL_LoadFunction(handle, "glXMakeCurrent");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   526
	this->gl_data->glXSwapBuffers =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   527
		(void (*)(Display *, GLXDrawable)) GL_LoadFunction(handle, "glXSwapBuffers");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
   528
	this->gl_data->glXGetConfig =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   529
		(int (*)(Display *, XVisualInfo *, int, int *)) GL_LoadFunction(handle, "glXGetConfig");
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
   530
	this->gl_data->glXQueryExtensionsString =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   531
		(const char *(*)(Display *, int)) GL_LoadFunction(handle, "glXQueryExtensionsString");
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   532
	this->gl_data->glXSwapIntervalSGI =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   533
		(int (*)(int)) GL_LoadFunction(handle, "glXSwapIntervalSGI");
1736
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1577
diff changeset
   534
	this->gl_data->glXSwapIntervalMESA =
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   535
		(GLint (*)(unsigned)) GL_LoadFunction(handle, "glXSwapIntervalMESA");
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   536
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   537
	if ( (this->gl_data->glXChooseVisual == NULL) || 
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   538
	     (this->gl_data->glXCreateContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   539
	     (this->gl_data->glXDestroyContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   540
	     (this->gl_data->glXMakeCurrent == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   541
	     (this->gl_data->glXSwapBuffers == NULL) ||
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
   542
	     (this->gl_data->glXGetConfig == NULL) ||
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
   543
	     (this->gl_data->glXQueryExtensionsString == NULL)) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   544
		SDL_SetError("Could not retrieve OpenGL functions");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   545
		return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   546
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   547
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   548
	this->gl_config.dll_handle = handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   549
	this->gl_config.driver_loaded = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   550
	if ( path ) {
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
   551
		SDL_strlcpy(this->gl_config.driver_path, path,
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
   552
			SDL_arraysize(this->gl_config.driver_path));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   553
	} else {
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
   554
		*this->gl_config.driver_path = '\0';
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   555
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   556
	return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   557
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   558
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   559
void *X11_GL_GetProcAddress(_THIS, const char* proc)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   560
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   561
	void* handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   562
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   563
	handle = this->gl_config.dll_handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   564
	if ( this->gl_data->glXGetProcAddress ) {
1196
b81f54c3963f Fixed compile warnings with gcc 4
Sam Lantinga <slouken@libsdl.org>
parents: 1191
diff changeset
   565
		return this->gl_data->glXGetProcAddress((const GLubyte *)proc);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   566
	}
1861
b42823412c3b Fixed bug #232
Sam Lantinga <slouken@libsdl.org>
parents: 1841
diff changeset
   567
	return GL_LoadFunction(handle, proc);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   568
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   569
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   570
#endif /* SDL_VIDEO_OPENGL_GLX */