src/video/x11/SDL_x11opengl.c
author Michael Sartain <mikesart@valvesoftware.com>
Thu, 11 Oct 2012 09:41:43 -0700
changeset 6570 45855398762c
parent 6522 edacce9402fb
child 6794 a0d42781fa92
permissions -rw-r--r--
Add GLX_X_VISUAL_TYPE_EXT so created window will use DirectColor if available (instead of TrueColor). Our new X11 window was being created with the TrueColor attribute, and trying to set the gamma on that would fail. This change checks for the visual_info extension, and uses that to ask for DirectColor if available.
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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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   251
    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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   261
    const char *where, *terminator;
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   262
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   263
    /* Extension names should not have spaces. */
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   264
    where = SDL_strchr(extension, ' ');
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   265
    if (where || *extension == '\0')
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   266
        return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   269
        return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   270
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   271
    /* It takes a bit of care to be fool-proof about parsing the
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   274
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   275
    start = extensions;
420716272158 Implemented X11 OpenGL support.
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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.
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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.
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parents:
diff changeset
   281
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
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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.
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parents:
diff changeset
   284
            if (*terminator == ' ' || *terminator == '\0')
420716272158 Implemented X11 OpenGL support.
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diff changeset
   285
                return SDL_TRUE;
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   289
    return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   294
{
420716272158 Implemented X11 OpenGL support.
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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.
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parents: 5243
diff changeset
   296
    int screen = DefaultScreen(display);
1952
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   299
    Window w;
420716272158 Implemented X11 OpenGL support.
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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.
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parents:
diff changeset
   302
    const char *extensions;
420716272158 Implemented X11 OpenGL support.
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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.
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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.
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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 =
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
   631
        (window ? ((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: */