src/video/x11/SDL_x11opengl.c
author Edward Rudd <urkle@outoforder.cc>
Mon, 31 Dec 2012 19:16:52 -0500
changeset 6794 a0d42781fa92
parent 6570 45855398762c
child 6817 93103b719488
permissions -rw-r--r--
Corrected call to glXMakeCurrent() when setting a NULL context. Fixes Bugzilla #1675.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
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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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  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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  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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     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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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_DRIVER_X11
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#include "SDL_x11video.h"
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#include "SDL_assert.h"
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/* GLX implementation of SDL OpenGL support */
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#if SDL_VIDEO_OPENGL_GLX
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#include "SDL_loadso.h"
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#include "SDL_x11opengles.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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#else
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#define DEFAULT_OPENGL	"libGL.so.1"
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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_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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#ifndef GLX_EXT_visual_rating
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#define GLX_EXT_visual_rating
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#define GLX_VISUAL_CAVEAT_EXT              0x20
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#define GLX_NONE_EXT                       0x8000
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#define GLX_SLOW_VISUAL_EXT                0x8001
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#define GLX_NON_CONFORMANT_VISUAL_EXT      0x800D
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#endif
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#ifndef GLX_EXT_visual_info
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#define GLX_EXT_visual_info
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#define GLX_X_VISUAL_TYPE_EXT              0x22
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#define GLX_DIRECT_COLOR_EXT               0x8003
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#endif
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#ifndef GLX_ARB_create_context
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#define GLX_ARB_create_context
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#define GLX_CONTEXT_MAJOR_VERSION_ARB      0x2091
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#define GLX_CONTEXT_MINOR_VERSION_ARB      0x2092
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#define GLX_CONTEXT_FLAGS_ARB              0x2094
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#define GLX_CONTEXT_DEBUG_BIT_ARB          0x0001
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#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
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/* Typedef for the GL 3.0 context creation function */
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typedef GLXContext(*PFNGLXCREATECONTEXTATTRIBSARBPROC) (Display * dpy,
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                                                        GLXFBConfig config,
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                                                        GLXContext
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                                                        share_context,
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                                                        Bool direct,
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                                                        const int
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                                                        *attrib_list);
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#endif
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#ifndef GLX_ARB_create_context_profile
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#define GLX_ARB_create_context_profile
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#define GLX_CONTEXT_PROFILE_MASK_ARB       0x9126
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#define GLX_CONTEXT_CORE_PROFILE_BIT_ARB   0x00000001
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#define GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
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#endif
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#ifndef GLX_ARB_create_context_robustness
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#define GLX_ARB_create_context_robustness
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#define GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB  0x00000004
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#define GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB     0x8256
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#define GLX_NO_RESET_NOTIFICATION_ARB                   0x8261
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#define GLX_LOSE_CONTEXT_ON_RESET_ARB                   0x8252
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#endif
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#ifndef GLX_EXT_create_context_es2_profile
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#define GLX_EXT_create_context_es2_profile
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#ifndef GLX_CONTEXT_ES2_PROFILE_BIT_EXT
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#define GLX_CONTEXT_ES2_PROFILE_BIT_EXT    0x00000002
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#endif
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#endif
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#ifndef GLX_EXT_swap_control
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#define GLX_SWAP_INTERVAL_EXT              0x20F1
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#define GLX_MAX_SWAP_INTERVAL_EXT          0x20F2
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#endif
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#ifndef GLX_EXT_swap_control_tear
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#define GLX_LATE_SWAPS_TEAR_EXT 0x20F3
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#endif
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#define OPENGL_REQUIRES_DLOPEN
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#if defined(OPENGL_REQUIRES_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
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#include <dlfcn.h>
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#define GL_LoadObject(X)	dlopen(X, (RTLD_NOW|RTLD_GLOBAL))
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#define GL_LoadFunction		dlsym
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#define GL_UnloadObject		dlclose
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#else
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#define GL_LoadObject	SDL_LoadObject
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#define GL_LoadFunction	SDL_LoadFunction
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#define GL_UnloadObject	SDL_UnloadObject
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#endif
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static void X11_GL_InitExtensions(_THIS);
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int
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X11_GL_LoadLibrary(_THIS, const char *path)
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{
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    void *handle;
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    if (_this->gl_data) {
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        SDL_SetError("OpenGL context already created");
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        return -1;
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    }
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    /* If SDL_GL_CONTEXT_EGL has been changed to 1, switch over to X11_GLES functions  */
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    if (_this->gl_config.use_egl == 1) {
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#if SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
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        _this->GL_LoadLibrary = X11_GLES_LoadLibrary;
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        _this->GL_GetProcAddress = X11_GLES_GetProcAddress;
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        _this->GL_UnloadLibrary = X11_GLES_UnloadLibrary;
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        _this->GL_CreateContext = X11_GLES_CreateContext;
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        _this->GL_MakeCurrent = X11_GLES_MakeCurrent;
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        _this->GL_SetSwapInterval = X11_GLES_SetSwapInterval;
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        _this->GL_GetSwapInterval = X11_GLES_GetSwapInterval;
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        _this->GL_SwapWindow = X11_GLES_SwapWindow;
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        _this->GL_DeleteContext = X11_GLES_DeleteContext;
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        return X11_GLES_LoadLibrary(_this, path);
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#else
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        SDL_SetError("SDL not configured with OpenGL ES/EGL support");
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        return -1;
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#endif
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    }
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    /* Load the OpenGL library */
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    if (path == NULL) {
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        path = SDL_getenv("SDL_OPENGL_LIBRARY");
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    }
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    if (path == NULL) {
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        path = DEFAULT_OPENGL;
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    }
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    _this->gl_config.dll_handle = GL_LoadObject(path);
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    if (!_this->gl_config.dll_handle) {
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#if defined(OPENGL_REQUIRES_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
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        SDL_SetError("Failed loading %s: %s", path, dlerror());
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#endif
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        return -1;
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    }
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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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    /* Allocate OpenGL memory */
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    _this->gl_data =
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        (struct SDL_GLDriverData *) SDL_calloc(1,
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                                               sizeof(struct
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                                                      SDL_GLDriverData));
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    if (!_this->gl_data) {
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        SDL_OutOfMemory();
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        return -1;
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    }
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    /* Load function pointers */
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    handle = _this->gl_config.dll_handle;
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    _this->gl_data->glXGetProcAddress =
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        (void *(*)(const GLubyte *))
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            GL_LoadFunction(handle, "glXGetProcAddressARB");
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    _this->gl_data->glXChooseVisual =
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        (XVisualInfo * (*)(Display *, int, int *))
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            X11_GL_GetProcAddress(_this, "glXChooseVisual");
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    _this->gl_data->glXCreateContext =
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        (GLXContext(*)(Display *, XVisualInfo *, GLXContext, int))
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            X11_GL_GetProcAddress(_this, "glXCreateContext");
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    _this->gl_data->glXDestroyContext =
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        (void (*)(Display *, GLXContext))
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            X11_GL_GetProcAddress(_this, "glXDestroyContext");
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    _this->gl_data->glXMakeCurrent =
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        (int (*)(Display *, GLXDrawable, GLXContext))
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            X11_GL_GetProcAddress(_this, "glXMakeCurrent");
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    _this->gl_data->glXSwapBuffers =
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        (void (*)(Display *, GLXDrawable))
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            X11_GL_GetProcAddress(_this, "glXSwapBuffers");
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    _this->gl_data->glXQueryDrawable =
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        (void (*)(Display*,GLXDrawable,int,unsigned int*))
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            X11_GL_GetProcAddress(_this, "glXQueryDrawable");
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    if (!_this->gl_data->glXChooseVisual ||
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        !_this->gl_data->glXCreateContext ||
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        !_this->gl_data->glXDestroyContext ||
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        !_this->gl_data->glXMakeCurrent ||
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        !_this->gl_data->glXSwapBuffers) {
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        SDL_SetError("Could not retrieve OpenGL functions");
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        return -1;
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    }
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    /* Initialize extensions */
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    X11_GL_InitExtensions(_this);
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    return 0;
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}
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void *
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X11_GL_GetProcAddress(_THIS, const char *proc)
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{
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    if (_this->gl_data->glXGetProcAddress) {
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        return _this->gl_data->glXGetProcAddress((const GLubyte *) proc);
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    }
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    return GL_LoadFunction(_this->gl_config.dll_handle, proc);
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}
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void
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X11_GL_UnloadLibrary(_THIS)
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{
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    /* Don't actually unload the library, since it may have registered
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     * X11 shutdown hooks, per the notes at:
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     * http://dri.sourceforge.net/doc/DRIuserguide.html
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     */
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#if 0
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    GL_UnloadObject(_this->gl_config.dll_handle);
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    _this->gl_config.dll_handle = NULL;
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#endif
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    /* Free OpenGL memory */
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    if (_this->gl_data) {
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        SDL_free(_this->gl_data);
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        _this->gl_data = NULL;
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    }
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}
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static SDL_bool
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HasExtension(const char *extension, const char *extensions)
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{
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    const char *start;
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    const char *where, *terminator;
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   262
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   263
    /* Extension names should not have spaces. */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   264
    where = SDL_strchr(extension, ' ');
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   265
    if (where || *extension == '\0')
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   266
        return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   267
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   268
    if (!extensions)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   269
        return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   270
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   271
    /* It takes a bit of care to be fool-proof about parsing the
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   272
     * OpenGL extensions string. Don't be fooled by sub-strings,
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   273
     * etc. */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   274
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   275
    start = extensions;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   276
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   277
    for (;;) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   278
        where = SDL_strstr(start, extension);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   279
        if (!where)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   280
            break;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   281
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   282
        terminator = where + SDL_strlen(extension);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   283
        if (where == start || *(where - 1) == ' ')
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   284
            if (*terminator == ' ' || *terminator == '\0')
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   285
                return SDL_TRUE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   286
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   287
        start = terminator;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   288
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   289
    return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   290
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   291
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   292
static void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   293
X11_GL_InitExtensions(_THIS)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   294
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   295
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
5244
762e40fb8e28 Be explicit about what display you're querying. The default display is 0.
Sam Lantinga <slouken@libsdl.org>
parents: 5243
diff changeset
   296
    int screen = DefaultScreen(display);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   297
    XVisualInfo *vinfo;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   298
    XSetWindowAttributes xattr;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   299
    Window w;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   300
    GLXContext context;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   301
    const char *(*glXQueryExtensionsStringFunc) (Display *, int);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   302
    const char *extensions;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   303
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   304
    vinfo = X11_GL_GetVisual(_this, display, screen);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   305
    if (!vinfo) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   306
        return;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   307
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   308
    xattr.background_pixel = 0;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   309
    xattr.border_pixel = 0;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   310
    xattr.colormap =
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   311
        XCreateColormap(display, RootWindow(display, screen), vinfo->visual,
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   312
                        AllocNone);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   313
    w = XCreateWindow(display, RootWindow(display, screen), 0, 0, 32, 32, 0,
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   314
                      vinfo->depth, InputOutput, vinfo->visual,
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   315
                      (CWBackPixel | CWBorderPixel | CWColormap), &xattr);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   316
    context = _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   317
    if (context) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   318
        _this->gl_data->glXMakeCurrent(display, w, context);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   319
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   320
    XFree(vinfo);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   321
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   322
    glXQueryExtensionsStringFunc =
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   323
        (const char *(*)(Display *, int)) X11_GL_GetProcAddress(_this,
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   324
                                                                "glXQueryExtensionsString");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   325
    if (glXQueryExtensionsStringFunc) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   326
        extensions = glXQueryExtensionsStringFunc(display, screen);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   327
    } else {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   328
        extensions = NULL;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   329
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   330
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   331
    /* Check for GLX_EXT_swap_control(_tear) */
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   332
    _this->gl_data->HAS_GLX_EXT_swap_control_tear = SDL_FALSE;
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   333
    if (HasExtension("GLX_EXT_swap_control", extensions)) {
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   334
        _this->gl_data->glXSwapIntervalEXT =
5630
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   335
            (int (*)(Display*,GLXDrawable,int))
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   336
                X11_GL_GetProcAddress(_this, "glXSwapIntervalEXT");
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   337
        if (HasExtension("GLX_EXT_swap_control_tear", extensions)) {
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   338
            _this->gl_data->HAS_GLX_EXT_swap_control_tear = SDL_TRUE;
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   339
        }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   340
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   341
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   342
    /* Check for GLX_MESA_swap_control */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   343
    if (HasExtension("GLX_MESA_swap_control", extensions)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   344
        _this->gl_data->glXSwapIntervalMESA =
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   345
            (int(*)(int)) X11_GL_GetProcAddress(_this, "glXSwapIntervalMESA");
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   346
        _this->gl_data->glXGetSwapIntervalMESA =
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   347
            (int(*)(void)) X11_GL_GetProcAddress(_this,
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   348
                                                   "glXGetSwapIntervalMESA");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   349
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   350
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   351
    /* Check for GLX_SGI_swap_control */
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   352
    if (HasExtension("GLX_SGI_swap_control", extensions)) {
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   353
        _this->gl_data->glXSwapIntervalSGI =
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   354
            (int (*)(int)) X11_GL_GetProcAddress(_this, "glXSwapIntervalSGI");
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   355
    }
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   356
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   357
    /* Check for GLX_EXT_visual_rating */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   358
    if (HasExtension("GLX_EXT_visual_rating", extensions)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   359
        _this->gl_data->HAS_GLX_EXT_visual_rating = SDL_TRUE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   360
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   361
6570
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   362
    /* Check for GLX_EXT_visual_info */
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   363
    if (HasExtension("GLX_EXT_visual_info", extensions)) {
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   364
        _this->gl_data->HAS_GLX_EXT_visual_info = SDL_TRUE;
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   365
    }
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   366
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   367
    if (context) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   368
        _this->gl_data->glXMakeCurrent(display, None, NULL);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   369
        _this->gl_data->glXDestroyContext(display, context);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   370
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   371
    XDestroyWindow(display, w);
2323
4ac07ae446d3 Fixed many valgrind errors. But, I broke testdyngl.
Bob Pendleton <bob@pendleton.com>
parents: 2322
diff changeset
   372
    X11_PumpEvents(_this);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   373
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   374
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   375
/* glXChooseVisual and glXChooseFBConfig have some small differences in
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   376
 * the attribute encoding, it can be chosen with the for_FBConfig parameter. 
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   377
 */
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   378
int 
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   379
X11_GL_GetAttributes(_THIS, Display * display, int screen, int * attribs, int size, Bool for_FBConfig)
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   380
{
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   381
    int i = 0;
6570
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   382
	const int MAX_ATTRIBUTES = 64;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   383
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   384
    /* assert buffer is large enough to hold all SDL attributes. */ 
6570
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   385
    SDL_assert(size >= MAX_ATTRIBUTES);
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   386
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   387
    /* Setup our GLX attributes according to the gl_config. */
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   388
    if( for_FBConfig ) {
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   389
        attribs[i++] = GLX_RENDER_TYPE;
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   390
	attribs[i++] = GLX_RGBA_BIT;
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   391
    } else {
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   392
        attribs[i++] = GLX_RGBA;
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   393
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   394
    attribs[i++] = GLX_RED_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   395
    attribs[i++] = _this->gl_config.red_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   396
    attribs[i++] = GLX_GREEN_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   397
    attribs[i++] = _this->gl_config.green_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   398
    attribs[i++] = GLX_BLUE_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   399
    attribs[i++] = _this->gl_config.blue_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   400
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   401
    if (_this->gl_config.alpha_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   402
        attribs[i++] = GLX_ALPHA_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   403
        attribs[i++] = _this->gl_config.alpha_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   404
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   405
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   406
    if (_this->gl_config.double_buffer) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   407
        attribs[i++] = GLX_DOUBLEBUFFER;
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   408
	if( for_FBConfig )
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   409
	    attribs[i++] = True;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   410
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   411
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   412
    attribs[i++] = GLX_DEPTH_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   413
    attribs[i++] = _this->gl_config.depth_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   414
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   415
    if (_this->gl_config.stencil_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   416
        attribs[i++] = GLX_STENCIL_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   417
        attribs[i++] = _this->gl_config.stencil_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   418
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   419
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   420
    if (_this->gl_config.accum_red_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   421
        attribs[i++] = GLX_ACCUM_RED_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   422
        attribs[i++] = _this->gl_config.accum_red_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   423
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   424
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   425
    if (_this->gl_config.accum_green_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   426
        attribs[i++] = GLX_ACCUM_GREEN_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   427
        attribs[i++] = _this->gl_config.accum_green_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   428
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   429
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   430
    if (_this->gl_config.accum_blue_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   431
        attribs[i++] = GLX_ACCUM_BLUE_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   432
        attribs[i++] = _this->gl_config.accum_blue_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   433
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   434
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   435
    if (_this->gl_config.accum_alpha_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   436
        attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   437
        attribs[i++] = _this->gl_config.accum_alpha_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   438
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   439
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   440
    if (_this->gl_config.stereo) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   441
        attribs[i++] = GLX_STEREO;
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   442
	if( for_FBConfig )
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   443
	    attribs[i++] = True;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   444
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   445
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   446
    if (_this->gl_config.multisamplebuffers) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   447
        attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   448
        attribs[i++] = _this->gl_config.multisamplebuffers;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   449
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   450
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   451
    if (_this->gl_config.multisamplesamples) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   452
        attribs[i++] = GLX_SAMPLES_ARB;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   453
        attribs[i++] = _this->gl_config.multisamplesamples;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   454
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   455
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
   456
    if (_this->gl_config.accelerated >= 0 &&
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
   457
        _this->gl_data->HAS_GLX_EXT_visual_rating) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   458
        attribs[i++] = GLX_VISUAL_CAVEAT_EXT;
3570
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   459
        attribs[i++] = _this->gl_config.accelerated ? GLX_NONE_EXT :
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   460
                                                      GLX_SLOW_VISUAL_EXT;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   461
    }
3570
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   462
6570
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   463
    // If we're supposed to use DirectColor visuals, and we've got the EXT_visual_info
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   464
    //  extension, then add GLX_X_VISUAL_TYPE_EXT.
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   465
    if (X11_UseDirectColorVisuals() &&
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   466
        _this->gl_data->HAS_GLX_EXT_visual_info) {
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   467
        attribs[i++] = GLX_X_VISUAL_TYPE_EXT;
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   468
        attribs[i++] = GLX_DIRECT_COLOR_EXT;
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   469
    }
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   470
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   471
    attribs[i++] = None;
6570
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   472
45855398762c Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor).
Michael Sartain <mikesart@valvesoftware.com>
parents: 6522
diff changeset
   473
    SDL_assert(i <= MAX_ATTRIBUTES);
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   474
 
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   475
    return i;
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   476
}
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   477
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   478
XVisualInfo *
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   479
X11_GL_GetVisual(_THIS, Display * display, int screen)
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   480
{
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   481
    XVisualInfo *vinfo;
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   482
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   483
    /* 64 seems nice. */
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   484
    int attribs[64];
6359
b2a768065c32 Removed unused variable to silence compiler warning.
Ryan C. Gordon <icculus@icculus.org>
parents: 6296
diff changeset
   485
    X11_GL_GetAttributes(_this,display,screen,attribs,64,SDL_FALSE);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   486
6181
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   487
    if (!_this->gl_data) {
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   488
        /* The OpenGL library wasn't loaded, SDL_GetError() should have info */
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   489
        return NULL;
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   490
    }
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   491
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   492
    vinfo = _this->gl_data->glXChooseVisual(display, screen, attribs);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   493
    if (!vinfo) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   494
        SDL_SetError("Couldn't find matching GLX visual");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   495
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   496
    return vinfo;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   497
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   498
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   499
SDL_GLContext
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   500
X11_GL_CreateContext(_THIS, SDL_Window * window)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   501
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   502
    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   503
    Display *display = data->videodata->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   504
    int screen =
5246
58265e606e4e Window coordinates are in the global space and windows are not tied to a particular display.
Sam Lantinga <slouken@libsdl.org>
parents: 5244
diff changeset
   505
        ((SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata)->screen;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   506
    XWindowAttributes xattr;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   507
    XVisualInfo v, *vinfo;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   508
    int n;
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   509
    GLXContext context = NULL, share_context;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   510
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   511
    if (_this->gl_config.share_with_current_context) {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   512
        share_context = (GLXContext)(_this->current_glctx);
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   513
    } else {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   514
        share_context = NULL;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   515
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   516
1955
Sam Lantinga <slouken@libsdl.org>
parents: 1954
diff changeset
   517
    /* We do this to create a clean separation between X and GLX errors. */
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   518
    XSync(display, False);
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3571
diff changeset
   519
    XGetWindowAttributes(display, data->xwindow, &xattr);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   520
    v.screen = screen;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   521
    v.visualid = XVisualIDFromVisual(xattr.visual);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   522
    vinfo = XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &v, &n);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   523
    if (vinfo) {
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   524
        if (_this->gl_config.major_version < 3 &&
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   525
            _this->gl_config.profile_mask == 0 &&
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   526
            _this->gl_config.flags == 0) {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   527
            /* Create legacy context */
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   528
            context =
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   529
                _this->gl_data->glXCreateContext(display, vinfo, share_context, True);
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   530
        } else {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   531
            /* If we want a GL 3.0 context or later we need to get a temporary
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   532
               context to grab the new context creation function */
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   533
            GLXContext temp_context =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   534
                _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   535
            if (!temp_context) {
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   536
                SDL_SetError("Could not create GL context");
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   537
                return NULL;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   538
            } else {
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   539
                /* max 8 attributes plus terminator */
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   540
                int attribs[9] = {
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   541
                    GLX_CONTEXT_MAJOR_VERSION_ARB,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   542
                    _this->gl_config.major_version,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   543
                    GLX_CONTEXT_MINOR_VERSION_ARB,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   544
                    _this->gl_config.minor_version,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   545
                    0
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   546
                };
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   547
                int iattr = 4;
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   548
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   549
                /* SDL profile bits match GLX profile bits */
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   550
                if( _this->gl_config.profile_mask != 0 ) {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   551
                    attribs[iattr++] = GLX_CONTEXT_PROFILE_MASK_ARB;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   552
                    attribs[iattr++] = _this->gl_config.profile_mask;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   553
                }
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   554
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   555
                /* SDL flags match GLX flags */
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   556
                if( _this->gl_config.flags != 0 ) {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   557
                    attribs[iattr++] = GLX_CONTEXT_FLAGS_ARB;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   558
                    attribs[iattr++] = _this->gl_config.flags;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   559
                }
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   560
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   561
                attribs[iattr++] = 0;
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   562
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   563
                /* Get a pointer to the context creation function for GL 3.0 */
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   564
                PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribs =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   565
                    (PFNGLXCREATECONTEXTATTRIBSARBPROC) _this->gl_data->
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   566
                    glXGetProcAddress((GLubyte *)
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   567
                                      "glXCreateContextAttribsARB");
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   568
                if (!glXCreateContextAttribs) {
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   569
                    SDL_SetError("GL 3.x is not supported");
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   570
                    context = temp_context;
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   571
                } else {
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   572
                    int glxAttribs[64];
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   573
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
   574
                    /* Create a GL 3.x context */
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   575
                    GLXFBConfig *framebuffer_config = NULL;
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   576
                    int fbcount = 0;
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   577
                    GLXFBConfig *(*glXChooseFBConfig) (Display * disp,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   578
                                                       int screen,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   579
                                                       const int *attrib_list,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   580
                                                       int *nelements);
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
   581
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   582
                    glXChooseFBConfig =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   583
                        (GLXFBConfig *
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   584
                         (*)(Display *, int, const int *,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   585
                             int *)) _this->gl_data->
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   586
                        glXGetProcAddress((GLubyte *) "glXChooseFBConfig");
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
   587
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   588
                    X11_GL_GetAttributes(_this,display,screen,glxAttribs,64,SDL_TRUE);
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   589
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   590
                    if (!glXChooseFBConfig
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   591
                        || !(framebuffer_config =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   592
                             glXChooseFBConfig(display,
5395
f0e399961f3a Fixed bug 1145 (GL Context creation fails for OpenGL 3.2 + Alpha buffer with X11 BadMatch)
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   593
                                               DefaultScreen(display), glxAttribs,
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   594
                                               &fbcount))) {
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   595
                        SDL_SetError
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   596
                            ("No good framebuffers found. GL 3.x disabled");
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   597
                        context = temp_context;
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   598
                    } else {
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   599
                        context =
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   600
                            glXCreateContextAttribs(display,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   601
                                                    framebuffer_config[0],
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   602
                                                    share_context, True, attribs);
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   603
                        _this->gl_data->glXDestroyContext(display,
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   604
                                                          temp_context);
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   605
                    }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   606
                }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   607
            }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   608
        }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   609
        XFree(vinfo);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   610
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   611
    XSync(display, False);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   612
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   613
    if (!context) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   614
        SDL_SetError("Could not create GL context");
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   615
        return NULL;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   616
    }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   617
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   618
    if (X11_GL_MakeCurrent(_this, window, context) < 0) {
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   619
        X11_GL_DeleteContext(_this, context);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   620
        return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   621
    }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   622
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   623
    return context;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   624
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   625
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   626
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   627
X11_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   628
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   629
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   630
    Window drawable =
6794
a0d42781fa92 Corrected call to glXMakeCurrent() when setting a NULL context.
Edward Rudd <urkle@outoforder.cc>
parents: 6570
diff changeset
   631
        (context ? ((SDL_WindowData *) window->driverdata)->xwindow : None);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   632
    GLXContext glx_context = (GLXContext) context;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   633
    int status;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   634
6522
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   635
    if (!_this->gl_data) {
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   636
        SDL_SetError("OpenGL not initialized");
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   637
        return -1;
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   638
    }
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   639
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   640
    status = 0;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   641
    if (!_this->gl_data->glXMakeCurrent(display, drawable, glx_context)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   642
        SDL_SetError("Unable to make GL context current");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   643
        status = -1;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   644
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   645
    XSync(display, False);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   646
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   647
    return (status);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   648
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   649
2327
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   650
/* 
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   651
   0 is a valid argument to glxSwapInterval(MESA|EXT) and setting it to 0
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   652
   will undo the effect of a previous call with a value that is greater
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   653
   than zero (or at least that is what the docs say). OTOH, 0 is an invalid
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   654
   argument to glxSwapIntervalSGI and it returns an error if you call it
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   655
   with 0 as an argument.
2327
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   656
*/
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   657
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   658
static int swapinterval = -1;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   659
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   660
X11_GL_SetSwapInterval(_THIS, int interval)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   661
{
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   662
    int status = -1;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   663
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   664
    if ((interval < 0) && (!_this->gl_data->HAS_GLX_EXT_swap_control_tear)) {
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   665
        SDL_SetError("Negative swap interval unsupported in this GL");
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   666
    } else if (_this->gl_data->glXSwapIntervalEXT) {
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   667
        Display *display = ((SDL_VideoData *) _this->driverdata)->display;
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   668
        const SDL_WindowData *windowdata = (SDL_WindowData *)
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   669
            _this->current_glwin->driverdata;
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   670
        Window drawable = windowdata->xwindow;
5630
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   671
        status = _this->gl_data->glXSwapIntervalEXT(display,drawable,interval);
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   672
        if (status != 0) {
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   673
            SDL_SetError("glxSwapIntervalEXT failed");
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   674
        } else {
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   675
            swapinterval = interval;
39e74dab5ebb Apparently glXSwapIntervalEXT() _does_ return a value.
Ryan C. Gordon <icculus@icculus.org>
parents: 5573
diff changeset
   676
        }
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   677
    } else if (_this->gl_data->glXSwapIntervalMESA) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   678
        status = _this->gl_data->glXSwapIntervalMESA(interval);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   679
        if (status != 0) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   680
            SDL_SetError("glxSwapIntervalMESA failed");
2327
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   681
        } else {
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   682
            swapinterval = interval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   683
        }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   684
    } else if (_this->gl_data->glXSwapIntervalSGI) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   685
        status = _this->gl_data->glXSwapIntervalSGI(interval);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   686
        if (status != 0) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   687
            SDL_SetError("glxSwapIntervalSGI failed");
2327
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   688
        } else {
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   689
            swapinterval = interval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   690
        }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   691
    } else {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   692
        SDL_Unsupported();
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   693
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   694
    return status;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   695
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   696
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   697
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   698
X11_GL_GetSwapInterval(_THIS)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   699
{
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   700
    if (_this->gl_data->glXSwapIntervalEXT) {
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   701
        Display *display = ((SDL_VideoData *) _this->driverdata)->display;
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   702
        const SDL_WindowData *windowdata = (SDL_WindowData *)
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   703
            _this->current_glwin->driverdata;
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   704
        Window drawable = windowdata->xwindow;
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   705
        unsigned int allow_late_swap_tearing = 0;
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   706
        unsigned int interval = 0;
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   707
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   708
        if (_this->gl_data->HAS_GLX_EXT_swap_control_tear) {
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   709
            _this->gl_data->glXQueryDrawable(display, drawable,
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   710
                                            GLX_LATE_SWAPS_TEAR_EXT,
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   711
                                            &allow_late_swap_tearing);
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   712
        }
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   713
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   714
        _this->gl_data->glXQueryDrawable(display, drawable,
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   715
                                         GLX_SWAP_INTERVAL_EXT, &interval);
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   716
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   717
        if ((allow_late_swap_tearing) && (interval > 0)) {
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   718
            return -((int) interval);
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   719
        }
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   720
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   721
        return (int) interval;
5572
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   722
    } else if (_this->gl_data->glXGetSwapIntervalMESA) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   723
        return _this->gl_data->glXGetSwapIntervalMESA();
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   724
    } else {
2327
7b53a8401195 In testdyngl.c the event type was being anded (&) with SDL_KEYDOWN and if the result was none zero the program was quiting. This is very weird because it was
Bob Pendleton <bob@pendleton.com>
parents: 2324
diff changeset
   725
        return swapinterval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   726
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   727
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   728
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   729
void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   730
X11_GL_SwapWindow(_THIS, SDL_Window * window)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   731
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   732
    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   733
    Display *display = data->videodata->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   734
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3571
diff changeset
   735
    _this->gl_data->glXSwapBuffers(display, data->xwindow);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   736
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   737
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   738
void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   739
X11_GL_DeleteContext(_THIS, SDL_GLContext context)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   740
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   741
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   742
    GLXContext glx_context = (GLXContext) context;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   743
6522
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   744
    if (!_this->gl_data) {
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   745
        return;
edacce9402fb The gl_data is optional for the driver, so don't early out of the context delete call if it doesn't exist.
Sam Lantinga <slouken@libsdl.org>
parents: 6393
diff changeset
   746
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   747
    _this->gl_data->glXDestroyContext(display, glx_context);
2324
3202e4826c57 more valgrind errors fixed. Plus I ran make indent which changed a few files.
Bob Pendleton <bob@pendleton.com>
parents: 2323
diff changeset
   748
    XSync(display, False);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   749
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   750
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   751
#endif /* SDL_VIDEO_OPENGL_GLX */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   752
6044
35448a5ea044 Lots of fixes importing SDL source wholesale into a new iOS project
Sam Lantinga <slouken@libsdl.org>
parents: 5981
diff changeset
   753
#endif /* SDL_VIDEO_DRIVER_X11 */
35448a5ea044 Lots of fixes importing SDL source wholesale into a new iOS project
Sam Lantinga <slouken@libsdl.org>
parents: 5981
diff changeset
   754
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   755
/* vi: set ts=4 sw=4 expandtab: */