src/video/x11/SDL_x11opengl.c
author Ryan C. Gordon <icculus@icculus.org>
Tue, 28 Jul 2015 00:12:50 -0400
changeset 9812 9b4dd9efb04e
parent 9619 b94b6d0bff0f
child 9998 f67cf37e9cd4
permissions -rw-r--r--
x11: Catch fatal X errors when calling glXMakeCurrent(). In extremely rare cases, probably due to misconfigured drivers, one might see this happen, and rather than terminate the process, we try to recover by reporting an error to the app. Fixes Bugzilla #3068.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2015 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_internal.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_ARB_framebuffer_sRGB
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#define GLX_ARB_framebuffer_sRGB
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#ifndef GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB
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#define GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB                0x20B2
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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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#ifndef GLX_ARB_context_flush_control
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#define GLX_ARB_context_flush_control
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#define GLX_CONTEXT_RELEASE_BEHAVIOR_ARB   0x2097
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#define GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB           0x0000
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#define GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB          0x2098
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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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    Display *display;
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    void *handle;
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    if (_this->gl_data) {
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        return SDL_SetError("OpenGL context already created");
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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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        return SDL_OutOfMemory();
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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->glXQueryExtension =
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        (Bool (*)(Display *, int *, int *))
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            GL_LoadFunction(handle, "glXQueryExtension");
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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->glXQueryExtension ||
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        !_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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        return SDL_SetError("Could not retrieve OpenGL functions");
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    }
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    display = ((SDL_VideoData *) _this->driverdata)->display;
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    if (!_this->gl_data->glXQueryExtension(display, &_this->gl_data->errorBase, &_this->gl_data->eventBase)) {
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        return SDL_SetError("GLX is not supported");
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    }
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    /* Initialize extensions */
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    X11_GL_InitExtensions(_this);
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    /* If we need a GL ES context and there's no  
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     * GLX_EXT_create_context_es2_profile extension, switch over to X11_GLES functions  
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     */
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    if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES && 
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        ! _this->gl_data->HAS_GLX_EXT_create_context_es2_profile ) {
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#if SDL_VIDEO_OPENGL_EGL
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        X11_GL_UnloadLibrary(_this);
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        /* Better avoid conflicts! */
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        if (_this->gl_config.dll_handle != NULL ) {
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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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        }
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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;
aea98cc3e696 Fixes bug #2040, prepare SDL_GL_CONTEXT_EGL for deprecation on v2.1
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        _this->GL_DeleteContext = X11_GLES_DeleteContext;
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diff changeset
   248
        return X11_GLES_LoadLibrary(_this, NULL);
7659
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
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#else
7723
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        return SDL_SetError("SDL not configured with EGL support");
7659
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#endif
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   252
    }
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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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{
420716272158 Implemented X11 OpenGL support.
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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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e4e462f591d7 Fixed bug 1006
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   263
    return GL_LoadFunction(_this->gl_config.dll_handle, proc);
1952
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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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   269
    /* Don't actually unload the library, since it may have registered
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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     * X11 shutdown hooks, per the notes at:
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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   271
     * http://dri.sourceforge.net/doc/DRIuserguide.html
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   272
     */
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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#if 0
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    GL_UnloadObject(_this->gl_config.dll_handle);
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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   275
    _this->gl_config.dll_handle = NULL;
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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#endif
089a77aebb7d Added test program for SDL_CreateWindowFrom()
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089a77aebb7d Added test program for SDL_CreateWindowFrom()
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    /* Free OpenGL memory */
7719
31b5f9ff36ca Christoph Mallon: Remove pointless if (x) before SDL_free(x)
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   279
    SDL_free(_this->gl_data);
31b5f9ff36ca Christoph Mallon: Remove pointless if (x) before SDL_free(x)
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    _this->gl_data = NULL;
1952
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}
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static SDL_bool
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   284
HasExtension(const char *extension, const char *extensions)
420716272158 Implemented X11 OpenGL support.
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{
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    const char *start;
420716272158 Implemented X11 OpenGL support.
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    const char *where, *terminator;
420716272158 Implemented X11 OpenGL support.
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   288
9354
5709598d628a glX HasExtension(): check for NULL ext string first.
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   289
    if (!extensions)
5709598d628a glX HasExtension(): check for NULL ext string first.
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   290
        return SDL_FALSE;
5709598d628a glX HasExtension(): check for NULL ext string first.
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   291
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   292
    /* Extension names should not have spaces. */
420716272158 Implemented X11 OpenGL support.
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   293
    where = SDL_strchr(extension, ' ');
420716272158 Implemented X11 OpenGL support.
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diff changeset
   294
    if (where || *extension == '\0')
420716272158 Implemented X11 OpenGL support.
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   295
        return SDL_FALSE;
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   296
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   297
    /* It takes a bit of care to be fool-proof about parsing the
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diff changeset
   298
     * OpenGL extensions string. Don't be fooled by sub-strings,
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   299
     * etc. */
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   300
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   301
    start = extensions;
420716272158 Implemented X11 OpenGL support.
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   302
420716272158 Implemented X11 OpenGL support.
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   303
    for (;;) {
420716272158 Implemented X11 OpenGL support.
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   304
        where = SDL_strstr(start, extension);
420716272158 Implemented X11 OpenGL support.
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diff changeset
   305
        if (!where)
420716272158 Implemented X11 OpenGL support.
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diff changeset
   306
            break;
420716272158 Implemented X11 OpenGL support.
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   307
420716272158 Implemented X11 OpenGL support.
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   308
        terminator = where + SDL_strlen(extension);
420716272158 Implemented X11 OpenGL support.
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diff changeset
   309
        if (where == start || *(where - 1) == ' ')
420716272158 Implemented X11 OpenGL support.
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diff changeset
   310
            if (*terminator == ' ' || *terminator == '\0')
420716272158 Implemented X11 OpenGL support.
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   311
                return SDL_TRUE;
420716272158 Implemented X11 OpenGL support.
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diff changeset
   312
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   313
        start = terminator;
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   314
    }
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diff changeset
   315
    return SDL_FALSE;
420716272158 Implemented X11 OpenGL support.
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diff changeset
   316
}
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   317
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   318
static void
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   319
X11_GL_InitExtensions(_THIS)
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   320
{
420716272158 Implemented X11 OpenGL support.
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diff changeset
   321
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
9355
0d1e81f10b7e X11: Don't create a window and GL context to look up the glX extension string.
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   322
    const int screen = DefaultScreen(display);
1952
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   323
    const char *(*glXQueryExtensionsStringFunc) (Display *, int);
420716272158 Implemented X11 OpenGL support.
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diff changeset
   324
    const char *extensions;
420716272158 Implemented X11 OpenGL support.
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diff changeset
   325
420716272158 Implemented X11 OpenGL support.
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diff changeset
   326
    glXQueryExtensionsStringFunc =
420716272158 Implemented X11 OpenGL support.
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diff changeset
   327
        (const char *(*)(Display *, int)) X11_GL_GetProcAddress(_this,
420716272158 Implemented X11 OpenGL support.
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diff changeset
   328
                                                                "glXQueryExtensionsString");
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   329
    if (glXQueryExtensionsStringFunc) {
420716272158 Implemented X11 OpenGL support.
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diff changeset
   330
        extensions = glXQueryExtensionsStringFunc(display, screen);
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   331
    } else {
420716272158 Implemented X11 OpenGL support.
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diff changeset
   332
        extensions = NULL;
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   333
    }
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   334
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   335
    /* 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
   336
    _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
   337
    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
   338
        _this->gl_data->glXSwapIntervalEXT =
6846
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   339
            (void (*)(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
   340
                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
   341
        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
   342
            _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
   343
        }
1952
420716272158 Implemented X11 OpenGL support.
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diff changeset
   344
    }
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   345
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   346
    /* Check for GLX_MESA_swap_control */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   347
    if (HasExtension("GLX_MESA_swap_control", extensions)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   348
        _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
   349
            (int(*)(int)) X11_GL_GetProcAddress(_this, "glXSwapIntervalMESA");
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   350
        _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
   351
            (int(*)(void)) X11_GL_GetProcAddress(_this,
1952
420716272158 Implemented X11 OpenGL support.
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parents:
diff changeset
   352
                                                   "glXGetSwapIntervalMESA");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   353
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   354
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
   355
    /* 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
   356
    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
   357
        _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
   358
            (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
   359
    }
32a785da3f49 Added support for GLX_EXT_swap_control, and cleaned up some other extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   360
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   361
    /* Check for GLX_ARB_create_context */
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   362
    if (HasExtension("GLX_ARB_create_context", extensions)) {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   363
        _this->gl_data->glXCreateContextAttribsARB =
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   364
            (GLXContext (*)(Display*,GLXFBConfig,GLXContext,Bool,const int *))
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   365
                X11_GL_GetProcAddress(_this, "glXCreateContextAttribsARB");
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   366
        _this->gl_data->glXChooseFBConfig =
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   367
            (GLXFBConfig *(*)(Display *, int, const int *, int *))
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   368
                X11_GL_GetProcAddress(_this, "glXChooseFBConfig");
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   369
    }
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   370
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   371
    /* Check for GLX_EXT_visual_rating */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   372
    if (HasExtension("GLX_EXT_visual_rating", extensions)) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   373
        _this->gl_data->HAS_GLX_EXT_visual_rating = SDL_TRUE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   374
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   375
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
   376
    /* 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
   377
    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
   378
        _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
   379
    }
7659
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
Gabriel Jacobo <gabomdq@gmail.com>
parents: 7512
diff changeset
   380
    
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
Gabriel Jacobo <gabomdq@gmail.com>
parents: 7512
diff changeset
   381
    /* Check for GLX_EXT_create_context_es2_profile */
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
Gabriel Jacobo <gabomdq@gmail.com>
parents: 7512
diff changeset
   382
    if (HasExtension("GLX_EXT_create_context_es2_profile", extensions)) {
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
Gabriel Jacobo <gabomdq@gmail.com>
parents: 7512
diff changeset
   383
        _this->gl_data->HAS_GLX_EXT_create_context_es2_profile = SDL_TRUE;
ac4ce59c40e7 Fixes bug #2037, common EGL code for Android and X11
Gabriel Jacobo <gabomdq@gmail.com>
parents: 7512
diff changeset
   384
    }
9412
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   385
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   386
    /* Check for GLX_ARB_context_flush_control */
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   387
    if (HasExtension("GLX_ARB_context_flush_control", extensions)) {
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   388
        _this->gl_data->HAS_GLX_ARB_context_flush_control = SDL_TRUE;
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   389
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   390
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   391
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   392
/* glXChooseVisual and glXChooseFBConfig have some small differences in
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   393
 * the attribute encoding, it can be chosen with the for_FBConfig parameter.
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   394
 */
9458
543298b36b28 This function can be static.
Ryan C. Gordon <icculus@icculus.org>
parents: 9412
diff changeset
   395
static int
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   396
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
   397
{
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
   398
    int i = 0;
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   399
    const int MAX_ATTRIBUTES = 64;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   400
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   401
    /* 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
   402
    SDL_assert(size >= MAX_ATTRIBUTES);
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   403
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   404
    /* 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
   405
    if( for_FBConfig ) {
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   406
        attribs[i++] = GLX_RENDER_TYPE;
7462
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   407
        attribs[i++] = GLX_RGBA_BIT;
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   408
    } else {
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   409
        attribs[i++] = GLX_RGBA;
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   410
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   411
    attribs[i++] = GLX_RED_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   412
    attribs[i++] = _this->gl_config.red_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   413
    attribs[i++] = GLX_GREEN_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   414
    attribs[i++] = _this->gl_config.green_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   415
    attribs[i++] = GLX_BLUE_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   416
    attribs[i++] = _this->gl_config.blue_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   417
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   418
    if (_this->gl_config.alpha_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   419
        attribs[i++] = GLX_ALPHA_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   420
        attribs[i++] = _this->gl_config.alpha_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   421
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   422
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   423
    if (_this->gl_config.double_buffer) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   424
        attribs[i++] = GLX_DOUBLEBUFFER;
7462
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   425
        if( for_FBConfig ) {
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   426
            attribs[i++] = True;
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   427
        }
1952
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
    attribs[i++] = GLX_DEPTH_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   431
    attribs[i++] = _this->gl_config.depth_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   432
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   433
    if (_this->gl_config.stencil_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   434
        attribs[i++] = GLX_STENCIL_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   435
        attribs[i++] = _this->gl_config.stencil_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   436
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   437
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   438
    if (_this->gl_config.accum_red_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   439
        attribs[i++] = GLX_ACCUM_RED_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   440
        attribs[i++] = _this->gl_config.accum_red_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   441
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   442
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   443
    if (_this->gl_config.accum_green_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   444
        attribs[i++] = GLX_ACCUM_GREEN_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   445
        attribs[i++] = _this->gl_config.accum_green_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   446
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   447
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   448
    if (_this->gl_config.accum_blue_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   449
        attribs[i++] = GLX_ACCUM_BLUE_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   450
        attribs[i++] = _this->gl_config.accum_blue_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   451
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   452
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   453
    if (_this->gl_config.accum_alpha_size) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   454
        attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   455
        attribs[i++] = _this->gl_config.accum_alpha_size;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   456
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   457
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   458
    if (_this->gl_config.stereo) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   459
        attribs[i++] = GLX_STEREO;
7462
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   460
        if( for_FBConfig ) {
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   461
            attribs[i++] = True;
66b536503733 Minor indentation clean up.
Ryan C. Gordon <icculus@icculus.org>
parents: 7413
diff changeset
   462
        }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   463
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   464
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   465
    if (_this->gl_config.multisamplebuffers) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   466
        attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   467
        attribs[i++] = _this->gl_config.multisamplebuffers;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   468
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   469
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   470
    if (_this->gl_config.multisamplesamples) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   471
        attribs[i++] = GLX_SAMPLES_ARB;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   472
        attribs[i++] = _this->gl_config.multisamplesamples;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   473
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   474
7853
4861edda71d1 Added SDL_GL_FRAMEBUFFER_SRGB_CAPABLE (thanks, David!).
Ryan C. Gordon <icculus@icculus.org>
parents: 7827
diff changeset
   475
    if (_this->gl_config.framebuffer_srgb_capable) {
4861edda71d1 Added SDL_GL_FRAMEBUFFER_SRGB_CAPABLE (thanks, David!).
Ryan C. Gordon <icculus@icculus.org>
parents: 7827
diff changeset
   476
        attribs[i++] = GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB;
9459
f5b468964b0b X11: Always specify "True" if setting GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB.
Ryan C. Gordon <icculus@icculus.org>
parents: 9458
diff changeset
   477
        attribs[i++] = True;  /* always needed, for_FBConfig or not! */
7853
4861edda71d1 Added SDL_GL_FRAMEBUFFER_SRGB_CAPABLE (thanks, David!).
Ryan C. Gordon <icculus@icculus.org>
parents: 7827
diff changeset
   478
    }
4861edda71d1 Added SDL_GL_FRAMEBUFFER_SRGB_CAPABLE (thanks, David!).
Ryan C. Gordon <icculus@icculus.org>
parents: 7827
diff changeset
   479
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
   480
    if (_this->gl_config.accelerated >= 0 &&
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
   481
        _this->gl_data->HAS_GLX_EXT_visual_rating) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   482
        attribs[i++] = GLX_VISUAL_CAVEAT_EXT;
3570
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   483
        attribs[i++] = _this->gl_config.accelerated ? GLX_NONE_EXT :
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   484
                                                      GLX_SLOW_VISUAL_EXT;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   485
    }
3570
7812d3e9564e OpenGL hardware acceleration defaults on
Sam Lantinga <slouken@libsdl.org>
parents: 3361
diff changeset
   486
6817
93103b719488 Cleaned out a few C++ single-line comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 6794
diff changeset
   487
    /* If we're supposed to use DirectColor visuals, and we've got the
93103b719488 Cleaned out a few C++ single-line comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 6794
diff changeset
   488
       EXT_visual_info extension, then add GLX_X_VISUAL_TYPE_EXT. */
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
   489
    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
   490
        _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
   491
        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
   492
        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
   493
    }
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
   494
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   495
    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
   496
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
   497
    SDL_assert(i <= MAX_ATTRIBUTES);
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   498
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
   499
    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
   500
}
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
   501
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
   502
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
   503
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
   504
{
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
   505
    /* 64 seems nice. */
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   506
    int attribs[64];
8780
2d8d64a681ad Fixed crash if the OpenGL library hasn't been loaded yet
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   507
    XVisualInfo *vinfo;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   508
6181
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   509
    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
   510
        /* 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
   511
        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
   512
    }
e29f01fa2750 Fixed bug 1313 - Segfault on SDL_CreateWindow when gl lib cannot be loaded
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   513
8780
2d8d64a681ad Fixed crash if the OpenGL library hasn't been loaded yet
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   514
    X11_GL_GetAttributes(_this, display, screen, attribs, 64, SDL_FALSE);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   515
    vinfo = _this->gl_data->glXChooseVisual(display, screen, attribs);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   516
    if (!vinfo) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   517
        SDL_SetError("Couldn't find matching GLX visual");
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   518
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   519
    return vinfo;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   520
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   521
6988
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   522
#ifndef GLXBadContext
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   523
#define GLXBadContext 0
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   524
#endif
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   525
#ifndef GLXBadFBConfig
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   526
#define GLXBadFBConfig 9
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   527
#endif
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   528
#ifndef GLXBadProfileARB
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   529
#define GLXBadProfileARB 13
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   530
#endif
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   531
static int (*handler) (Display *, XErrorEvent *) = NULL;
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   532
static const char *errorHandlerOperation = NULL;
7512
462839f2f408 Fix for recent GLX error bug
Sam Lantinga <slouken@libsdl.org>
parents: 7462
diff changeset
   533
static int errorBase = 0;
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   534
static int errorCode = 0;
6988
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   535
static int
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   536
X11_GL_ErrorHandler(Display * d, XErrorEvent * e)
6988
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   537
{
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   538
    char *x11_error = NULL;
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   539
    char x11_error_locale[256];
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   540
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   541
    errorCode = e->error_code;
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   542
    if (X11_XGetErrorText(d, errorCode, x11_error_locale, sizeof(x11_error_locale)) == Success)
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   543
    {
8967
8ca9ce569f65 Fixed null terminating the X11 error string
Sam Lantinga <slouken@libsdl.org>
parents: 8804
diff changeset
   544
        x11_error = SDL_iconv_string("UTF-8", "", x11_error_locale, SDL_strlen(x11_error_locale)+1);
6988
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   545
    }
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   546
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   547
    if (x11_error)
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   548
    {
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   549
        SDL_SetError("Could not %s: %s", errorHandlerOperation, x11_error);
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   550
        SDL_free(x11_error);
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   551
    }
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   552
    else
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   553
    {
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   554
        SDL_SetError("Could not %s: %i (Base %i)\n", errorHandlerOperation, errorCode, errorBase);
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   555
    }
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   556
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   557
    return (0);
6988
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   558
}
2aed1beaf5bc Fixed bug 1749 - SDL_GL_CreateContext() causes fatal X11 protocol errors that should just be caught instead
Sam Lantinga <slouken@libsdl.org>
parents: 6948
diff changeset
   559
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   560
SDL_GLContext
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   561
X11_GL_CreateContext(_THIS, SDL_Window * window)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   562
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   563
    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   564
    Display *display = data->videodata->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   565
    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
   566
        ((SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata)->screen;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   567
    XWindowAttributes xattr;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   568
    XVisualInfo v, *vinfo;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   569
    int n;
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   570
    GLXContext context = NULL, share_context;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   571
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   572
    if (_this->gl_config.share_with_current_context) {
7413
30d42f6f2e8d Fixed cast of the OpenGL context type
Sam Lantinga <slouken@libsdl.org>
parents: 7412
diff changeset
   573
        share_context = (GLXContext)SDL_GL_GetCurrentContext();
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   574
    } else {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   575
        share_context = NULL;
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   576
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   577
1955
Sam Lantinga <slouken@libsdl.org>
parents: 1954
diff changeset
   578
    /* We do this to create a clean separation between X and GLX errors. */
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   579
    X11_XSync(display, False);
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   580
    errorHandlerOperation = "create GL context";
7512
462839f2f408 Fix for recent GLX error bug
Sam Lantinga <slouken@libsdl.org>
parents: 7462
diff changeset
   581
    errorBase = _this->gl_data->errorBase;
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   582
    errorCode = Success;
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   583
    handler = X11_XSetErrorHandler(X11_GL_ErrorHandler);
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   584
    X11_XGetWindowAttributes(display, data->xwindow, &xattr);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   585
    v.screen = screen;
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   586
    v.visualid = X11_XVisualIDFromVisual(xattr.visual);
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   587
    vinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &v, &n);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   588
    if (vinfo) {
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   589
        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
   590
            _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
   591
            _this->gl_config.flags == 0) {
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   592
            /* Create legacy context */
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   593
            context =
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   594
                _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
   595
        } else {
9412
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   596
            /* max 10 attributes plus terminator */
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   597
            int attribs[11] = {
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   598
                GLX_CONTEXT_MAJOR_VERSION_ARB,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   599
                _this->gl_config.major_version,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   600
                GLX_CONTEXT_MINOR_VERSION_ARB,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   601
                _this->gl_config.minor_version,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   602
                0
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   603
            };
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   604
            int iattr = 4;
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   605
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   606
            /* SDL profile bits match GLX profile bits */
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   607
            if( _this->gl_config.profile_mask != 0 ) {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   608
                attribs[iattr++] = GLX_CONTEXT_PROFILE_MASK_ARB;
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   609
                attribs[iattr++] = _this->gl_config.profile_mask;
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   610
            }
6296
b42657486c0d Add OpenGL 3.X context creation support
Sam Lantinga <slouken@libsdl.org>
parents: 6282
diff changeset
   611
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   612
            /* SDL flags match GLX flags */
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   613
            if( _this->gl_config.flags != 0 ) {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   614
                attribs[iattr++] = GLX_CONTEXT_FLAGS_ARB;
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   615
                attribs[iattr++] = _this->gl_config.flags;
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   616
            }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   617
9412
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   618
            /* only set if glx extension is available */
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   619
            if( _this->gl_data->HAS_GLX_ARB_context_flush_control ) {
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   620
                attribs[iattr++] = GLX_CONTEXT_RELEASE_BEHAVIOR_ARB;
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   621
                attribs[iattr++] = 
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   622
                    _this->gl_config.release_behavior ? 
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   623
                    GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB : 
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   624
                    GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB;
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   625
            }
8b1436ce1028 Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.
Marc Di Luzio <mdiluzio@feralinteractive.com>
parents: 9355
diff changeset
   626
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   627
            attribs[iattr++] = 0;
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
   628
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   629
            /* Get a pointer to the context creation function for GL 3.0 */
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   630
            if (!_this->gl_data->glXCreateContextAttribsARB) {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   631
                SDL_SetError("OpenGL 3.0 and later are not supported by this system");
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   632
            } else {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   633
                int glxAttribs[64];
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
   634
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   635
                /* Create a GL 3.x context */
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   636
                GLXFBConfig *framebuffer_config = NULL;
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   637
                int fbcount = 0;
3105
cdeee9f9b14b Fixed bug #721
Sam Lantinga <slouken@libsdl.org>
parents: 3100
diff changeset
   638
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   639
                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
   640
9330
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   641
                if (!_this->gl_data->glXChooseFBConfig
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   642
                    || !(framebuffer_config =
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   643
                        _this->gl_data->glXChooseFBConfig(display,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   644
                                          DefaultScreen(display), glxAttribs,
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   645
                                          &fbcount))) {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   646
                    SDL_SetError("No good framebuffers found. OpenGL 3.0 and later unavailable");
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   647
                } else {
26eb20aad02f X11: Fixes for OpenGL 3.0 and later context creation.
Ryan C. Gordon <icculus@icculus.org>
parents: 8967
diff changeset
   648
                    context = _this->gl_data->glXCreateContextAttribsARB(display,
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3105
diff changeset
   649
                                                    framebuffer_config[0],
6393
a773384edf20 Fixed bug 1565 - some small GL context creation enhancements
Sam Lantinga <slouken@libsdl.org>
parents: 6382
diff changeset
   650
                                                    share_context, True, attribs);
3100
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   651
                }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   652
            }
7dc982143c06 Date: Sun, 22 Mar 2009 12:52:29 +0000
Sam Lantinga <slouken@libsdl.org>
parents: 3057
diff changeset
   653
        }
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   654
        X11_XFree(vinfo);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   655
    }
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   656
    X11_XSync(display, False);
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   657
    X11_XSetErrorHandler(handler);
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   658
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   659
    if (!context) {
8804
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   660
        if (errorCode == Success) {
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   661
            SDL_SetError("Could not create GL context");
a941cf4234c4 X11: Provide specific X error when SDL_GL_CreateContext fails.
Jørgen P. Tjernø <jorgen@uberent.com>
parents: 8780
diff changeset
   662
        }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   663
        return NULL;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   664
    }
2178
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   665
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   666
    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
   667
        X11_GL_DeleteContext(_this, context);
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   668
        return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   669
    }
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   670
114a541cfae2 Creating a context makes it current, per the documentation.
Sam Lantinga <slouken@libsdl.org>
parents: 2105
diff changeset
   671
    return context;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   672
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   673
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   674
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   675
X11_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   676
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   677
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   678
    Window drawable =
6794
a0d42781fa92 Corrected call to glXMakeCurrent() when setting a NULL context.
Edward Rudd <urkle@outoforder.cc>
parents: 6570
diff changeset
   679
        (context ? ((SDL_WindowData *) window->driverdata)->xwindow : None);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   680
    GLXContext glx_context = (GLXContext) context;
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   681
    int rc;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   682
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
   683
    if (!_this->gl_data) {
7037
3fedf1f25b94 Make SDL_SetError and friends unconditionally return -1.
Ryan C. Gordon <icculus@icculus.org>
parents: 6988
diff changeset
   684
        return SDL_SetError("OpenGL not initialized");
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
   685
    }
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
   686
9812
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   687
    /* We do this to create a clean separation between X and GLX errors. */
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   688
    X11_XSync(display, False);
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   689
    errorHandlerOperation = "make GL context current";
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   690
    errorBase = _this->gl_data->errorBase;
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   691
    errorCode = Success;
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   692
    handler = X11_XSetErrorHandler(X11_GL_ErrorHandler);
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   693
    rc = _this->gl_data->glXMakeCurrent(display, drawable, glx_context);
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   694
    X11_XSetErrorHandler(handler);
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   695
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   696
    if (errorCode != Success) {   /* uhoh, an X error was thrown! */
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   697
        return -1;  /* the error handler called SDL_SetError() already. */
9b4dd9efb04e x11: Catch fatal X errors when calling glXMakeCurrent().
Ryan C. Gordon <icculus@icculus.org>
parents: 9619
diff changeset
   698
    } else if (!rc) {  /* glxMakeCurrent() failed without throwing an X error */
7037
3fedf1f25b94 Make SDL_SetError and friends unconditionally return -1.
Ryan C. Gordon <icculus@icculus.org>
parents: 6988
diff changeset
   699
        return SDL_SetError("Unable to make GL context current");
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   700
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   701
7037
3fedf1f25b94 Make SDL_SetError and friends unconditionally return -1.
Ryan C. Gordon <icculus@icculus.org>
parents: 6988
diff changeset
   702
    return 0;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   703
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   704
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7037
diff changeset
   705
/*
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
   706
   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
   707
   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
   708
   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
   709
   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
   710
   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
   711
*/
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
   712
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
   713
static int swapinterval = -1;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   714
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   715
X11_GL_SetSwapInterval(_THIS, int interval)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   716
{
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   717
    int status = -1;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   718
6382
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   719
    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
   720
        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
   721
    } 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
   722
        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
   723
        const SDL_WindowData *windowdata = (SDL_WindowData *)
7412
50211a1fd557 Fixed bug 1946 - OpenGL contexts in threads
Sam Lantinga <slouken@libsdl.org>
parents: 7191
diff changeset
   724
            SDL_GL_GetCurrentWindow()->driverdata;
6846
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   725
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
   726
        Window drawable = windowdata->xwindow;
6846
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   727
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   728
        /*
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   729
         * This is a workaround for a bug in NVIDIA drivers. Bug has been reported
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   730
         * and will be fixed in a future release (probably 319.xx).
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   731
         *
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   732
         * There's a bug where glXSetSwapIntervalEXT ignores updates because
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   733
         * it has the wrong value cached. To work around it, we just run a no-op
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   734
         * update to the current value.
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   735
         */
6851
a58fc7ff4a0f Fixed compiler warnings
Sam Lantinga <slouken@libsdl.org>
parents: 6846
diff changeset
   736
        int currentInterval = X11_GL_GetSwapInterval(_this);
6846
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   737
        _this->gl_data->glXSwapIntervalEXT(display, drawable, currentInterval);
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   738
        _this->gl_data->glXSwapIntervalEXT(display, drawable, interval);
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   739
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   740
        status = 0;
97eb26e2dee0 Workaround for NVIDIA bug in glXSwapIntervalEXT.
Sam Lantinga <slouken@libsdl.org>
parents: 6817
diff changeset
   741
        swapinterval = 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
   742
    } else if (_this->gl_data->glXSwapIntervalMESA) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   743
        status = _this->gl_data->glXSwapIntervalMESA(interval);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   744
        if (status != 0) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   745
            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
   746
        } 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
   747
            swapinterval = interval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   748
        }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   749
    } else if (_this->gl_data->glXSwapIntervalSGI) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   750
        status = _this->gl_data->glXSwapIntervalSGI(interval);
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   751
        if (status != 0) {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   752
            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
   753
        } 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
   754
            swapinterval = interval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   755
        }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   756
    } else {
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   757
        SDL_Unsupported();
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   758
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   759
    return status;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   760
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   761
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   762
int
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   763
X11_GL_GetSwapInterval(_THIS)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   764
{
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
   765
    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
   766
        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
   767
        const SDL_WindowData *windowdata = (SDL_WindowData *)
7412
50211a1fd557 Fixed bug 1946 - OpenGL contexts in threads
Sam Lantinga <slouken@libsdl.org>
parents: 7191
diff changeset
   768
            SDL_GL_GetCurrentWindow()->driverdata;
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
   769
        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
   770
        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
   771
        unsigned int interval = 0;
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   772
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   773
        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
   774
            _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
   775
                                            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
   776
                                            &allow_late_swap_tearing);
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   777
        }
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   778
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
   779
        _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
   780
                                         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
   781
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   782
        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
   783
            return -((int) interval);
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   784
        }
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   785
64d54101773a Add support for (GLX|WGL)_EXT_swap_control_tear.
Ryan C. Gordon <icculus@icculus.org>
parents: 6375
diff changeset
   786
        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
   787
    } else if (_this->gl_data->glXGetSwapIntervalMESA) {
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   788
        return _this->gl_data->glXGetSwapIntervalMESA();
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   789
    } 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
   790
        return swapinterval;
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   791
    }
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   792
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   793
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   794
void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   795
X11_GL_SwapWindow(_THIS, SDL_Window * window)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   796
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   797
    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   798
    Display *display = data->videodata->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   799
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
   800
    _this->gl_data->glXSwapBuffers(display, data->xwindow);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   801
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   802
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   803
void
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   804
X11_GL_DeleteContext(_THIS, SDL_GLContext context)
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   805
{
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   806
    Display *display = ((SDL_VideoData *) _this->driverdata)->display;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   807
    GLXContext glx_context = (GLXContext) context;
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   808
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
   809
    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
   810
        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
   811
    }
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   812
    _this->gl_data->glXDestroyContext(display, glx_context);
7827
a03ec8de0426 Don't supply duplicate X11 symbols inside SDL.
Ryan C. Gordon <icculus@icculus.org>
parents: 7723
diff changeset
   813
    X11_XSync(display, False);
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   814
}
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   815
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   816
#endif /* SDL_VIDEO_OPENGL_GLX */
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   817
6044
35448a5ea044 Lots of fixes importing SDL source wholesale into a new iOS project
Sam Lantinga <slouken@libsdl.org>
parents: 5981
diff changeset
   818
#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
   819
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   820
/* vi: set ts=4 sw=4 expandtab: */