glfw/src/glx_context.h

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//========================================================================
// GLFW 3.1 GLX - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
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#ifndef _glx_context_h_
#define _glx_context_h_
#define GLX_GLXEXT_LEGACY
#include <GL/glx.h>
// This path may need to be changed if you build GLFW using your own setup
// We ship and use our own copy of glxext.h since GLFW uses fairly new
// extensions and not all operating systems come with an up-to-date version
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#include "../deps/GL/glxext.h"
// Do we have support for dlopen/dlsym?
#if defined(_GLFW_HAS_DLOPEN)
#include <dlfcn.h>
#endif
// We support four different ways for getting addresses for GL/GLX
// extension functions: glXGetProcAddress, glXGetProcAddressARB,
// glXGetProcAddressEXT, and dlsym
#if defined(_GLFW_HAS_GLXGETPROCADDRESSARB)
#define _glfw_glXGetProcAddress(x) glXGetProcAddressARB(x)
#elif defined(_GLFW_HAS_GLXGETPROCADDRESS)
#define _glfw_glXGetProcAddress(x) glXGetProcAddress(x)
#elif defined(_GLFW_HAS_GLXGETPROCADDRESSEXT)
#define _glfw_glXGetProcAddress(x) glXGetProcAddressEXT(x)
#elif defined(_GLFW_HAS_DLOPEN)
#define _glfw_glXGetProcAddress(x) dlsym(_glfw.glx.libGL, x)
#define _GLFW_DLOPEN_LIBGL
#else
#error "No OpenGL entry point retrieval mechanism was enabled"
#endif
#define _GLFW_PLATFORM_FBCONFIG GLXFBConfig glx
#define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextGLX glx
#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE _GLFWlibraryGLX glx
#ifndef GLX_MESA_swap_control
typedef int (*PFNGLXSWAPINTERVALMESAPROC)(int);
#endif
//========================================================================
// GLFW platform specific types
//========================================================================
//------------------------------------------------------------------------
// Platform-specific OpenGL context structure
//------------------------------------------------------------------------
typedef struct _GLFWcontextGLX
{
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GLXContext context; // OpenGL rendering context
XVisualInfo* visual; // Visual for selected GLXFBConfig
} _GLFWcontextGLX;
//------------------------------------------------------------------------
// Platform-specific library global data for GLX
//------------------------------------------------------------------------
typedef struct _GLFWlibraryGLX
{
// Server-side GLX version
int versionMajor, versionMinor;
int eventBase;
int errorBase;
// GLX extensions
PFNGLXSWAPINTERVALSGIPROC SwapIntervalSGI;
PFNGLXSWAPINTERVALEXTPROC SwapIntervalEXT;
PFNGLXSWAPINTERVALMESAPROC SwapIntervalMESA;
PFNGLXCREATECONTEXTATTRIBSARBPROC CreateContextAttribsARB;
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GLboolean SGI_swap_control;
GLboolean EXT_swap_control;
GLboolean MESA_swap_control;
GLboolean ARB_multisample;
GLboolean ARB_framebuffer_sRGB;
GLboolean ARB_create_context;
GLboolean ARB_create_context_profile;
GLboolean ARB_create_context_robustness;
GLboolean EXT_create_context_es2_profile;
#if defined(_GLFW_DLOPEN_LIBGL)
void* libGL; // dlopen handle for libGL.so
#endif
} _GLFWlibraryGLX;
//========================================================================
// Prototypes for platform specific internal functions
//========================================================================
int _glfwInitContextAPI(void);
void _glfwTerminateContextAPI(void);
int _glfwCreateContext(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig);
void _glfwDestroyContext(_GLFWwindow* window);
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#endif // _glx_context_h_