mirror of
https://github.com/glfw/glfw.git
synced 2026-09-18 22:55:46 +00:00
Renamed context module files.
This commit is contained in:
Camilla Berglund
@@ -0,0 +1,723 @@
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//========================================================================
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// GLFW - An OpenGL library
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// Platform: X11/GLX
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// API version: 3.0
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// WWW: http://www.glfw.org/
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
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//
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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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//
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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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//
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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
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include <string.h>
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#include <stdlib.h>
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// This is the only glXGetProcAddress variant not declared by glxext.h
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void (*glXGetProcAddressEXT(const GLubyte* procName))();
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//========================================================================
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// Thread local storage attribute macro
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//========================================================================
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#if defined(__GNUC__)
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#define _GLFW_TLS __thread
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#else
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#define _GLFW_TLS
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#endif
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//========================================================================
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// The per-thread current context/window pointer
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//========================================================================
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static _GLFW_TLS _GLFWwindow* _glfwCurrentWindow = NULL;
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//========================================================================
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// Returns the specified attribute of the specified GLXFBConfig
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// NOTE: Do not call this unless we have found GLX 1.3+ or GLX_SGIX_fbconfig
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//========================================================================
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static int getFBConfigAttrib(_GLFWwindow* window, GLXFBConfig fbconfig, int attrib)
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{
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int value;
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if (_glfwLibrary.GLX.SGIX_fbconfig)
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{
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_glfwLibrary.GLX.GetFBConfigAttribSGIX(_glfwLibrary.X11.display,
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fbconfig, attrib, &value);
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}
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else
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glXGetFBConfigAttrib(_glfwLibrary.X11.display, fbconfig, attrib, &value);
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return value;
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}
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//========================================================================
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// Return a list of available and usable framebuffer configs
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//========================================================================
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static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
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{
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GLXFBConfig* fbconfigs;
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_GLFWfbconfig* result;
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int i, count = 0;
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const char* vendor;
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GLboolean trustWindowBit = GL_TRUE;
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*found = 0;
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if (_glfwLibrary.GLX.majorVersion == 1 && _glfwLibrary.GLX.minorVersion < 3)
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{
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if (!_glfwLibrary.GLX.SGIX_fbconfig)
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{
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_glfwSetError(GLFW_API_UNAVAILABLE,
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"GLX: GLXFBConfig support not found");
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return NULL;
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}
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}
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vendor = glXGetClientString(_glfwLibrary.X11.display, GLX_VENDOR);
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if (strcmp(vendor, "Chromium") == 0)
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{
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// HACK: This is a (hopefully temporary) workaround for Chromium
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// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
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trustWindowBit = GL_FALSE;
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}
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if (_glfwLibrary.GLX.SGIX_fbconfig)
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{
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fbconfigs = _glfwLibrary.GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
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_glfwLibrary.X11.screen,
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NULL,
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&count);
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if (!count)
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{
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_glfwSetError(GLFW_API_UNAVAILABLE,
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"GLX: No GLXFBConfigs returned");
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return NULL;
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}
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}
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else
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{
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fbconfigs = glXGetFBConfigs(_glfwLibrary.X11.display,
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_glfwLibrary.X11.screen,
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&count);
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if (!count)
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{
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_glfwSetError(GLFW_API_UNAVAILABLE,
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"GLX: No GLXFBConfigs returned");
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return NULL;
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}
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}
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result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
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if (!result)
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{
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_glfwSetError(GLFW_OUT_OF_MEMORY, NULL);
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return NULL;
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}
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for (i = 0; i < count; i++)
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{
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_GLFWfbconfig* f = result + *found;
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if (!getFBConfigAttrib(window, fbconfigs[i], GLX_DOUBLEBUFFER) ||
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!getFBConfigAttrib(window, fbconfigs[i], GLX_VISUAL_ID))
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{
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// Only consider double-buffered GLXFBConfigs with associated visuals
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continue;
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}
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if (!(getFBConfigAttrib(window,
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fbconfigs[i],
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GLX_RENDER_TYPE) & GLX_RGBA_BIT))
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{
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// Only consider RGBA GLXFBConfigs
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continue;
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}
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if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT))
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{
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if (trustWindowBit)
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{
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// Only consider window GLXFBConfigs
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continue;
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}
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}
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f->redBits = getFBConfigAttrib(window, fbconfigs[i], GLX_RED_SIZE);
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f->greenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_GREEN_SIZE);
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f->blueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_BLUE_SIZE);
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f->alphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ALPHA_SIZE);
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f->depthBits = getFBConfigAttrib(window, fbconfigs[i], GLX_DEPTH_SIZE);
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f->stencilBits = getFBConfigAttrib(window, fbconfigs[i], GLX_STENCIL_SIZE);
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f->accumRedBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_RED_SIZE);
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f->accumGreenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_GREEN_SIZE);
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f->accumBlueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_BLUE_SIZE);
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f->accumAlphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_ALPHA_SIZE);
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f->auxBuffers = getFBConfigAttrib(window, fbconfigs[i], GLX_AUX_BUFFERS);
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f->stereo = getFBConfigAttrib(window, fbconfigs[i], GLX_STEREO);
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if (_glfwLibrary.GLX.ARB_multisample)
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f->samples = getFBConfigAttrib(window, fbconfigs[i], GLX_SAMPLES);
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else
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f->samples = 0;
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f->platformID = (GLFWintptr) getFBConfigAttrib(window, fbconfigs[i], GLX_FBCONFIG_ID);
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(*found)++;
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}
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XFree(fbconfigs);
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return result;
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}
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//========================================================================
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// Error handler for BadMatch errors when requesting context with
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// unavailable OpenGL versions using the GLX_ARB_create_context extension
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//========================================================================
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static int errorHandler(Display *display, XErrorEvent* event)
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{
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return 0;
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}
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//========================================================================
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// Create the actual OpenGL context
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//========================================================================
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#define setGLXattrib(attribs, index, attribName, attribValue) \
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attribs[index++] = attribName; \
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attribs[index++] = attribValue;
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static int createContext(_GLFWwindow* window,
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const _GLFWwndconfig* wndconfig,
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GLXFBConfigID fbconfigID)
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{
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int attribs[40];
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int dummy, index;
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GLXFBConfig* fbconfig;
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GLXContext share = NULL;
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if (wndconfig->share)
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share = wndconfig->share->GLX.context;
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// Retrieve the previously selected GLXFBConfig
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{
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index = 0;
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setGLXattrib(attribs, index, GLX_FBCONFIG_ID, (int) fbconfigID);
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setGLXattrib(attribs, index, None, None);
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if (_glfwLibrary.GLX.SGIX_fbconfig)
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{
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fbconfig = _glfwLibrary.GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
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_glfwLibrary.X11.screen,
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attribs,
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&dummy);
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}
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else
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{
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fbconfig = glXChooseFBConfig(_glfwLibrary.X11.display,
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_glfwLibrary.X11.screen,
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attribs,
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&dummy);
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}
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if (fbconfig == NULL)
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{
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_glfwSetError(GLFW_PLATFORM_ERROR,
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"GLX: Failed to retrieve the selected GLXFBConfig");
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return GL_FALSE;
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}
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}
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// Retrieve the corresponding visual
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if (_glfwLibrary.GLX.SGIX_fbconfig)
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{
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window->GLX.visual = _glfwLibrary.GLX.GetVisualFromFBConfigSGIX(_glfwLibrary.X11.display,
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*fbconfig);
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}
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else
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{
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window->GLX.visual = glXGetVisualFromFBConfig(_glfwLibrary.X11.display,
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*fbconfig);
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}
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if (window->GLX.visual == NULL)
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{
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XFree(fbconfig);
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_glfwSetError(GLFW_PLATFORM_ERROR,
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"GLX: Failed to retrieve visual for GLXFBConfig");
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return GL_FALSE;
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}
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if (_glfwLibrary.GLX.ARB_create_context)
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{
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index = 0;
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if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
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{
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// Request an explicitly versioned context
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setGLXattrib(attribs, index, GLX_CONTEXT_MAJOR_VERSION_ARB, wndconfig->glMajor);
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setGLXattrib(attribs, index, GLX_CONTEXT_MINOR_VERSION_ARB, wndconfig->glMinor);
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}
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if (wndconfig->clientAPI == GLFW_OPENGL_ES_API)
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{
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if (!_glfwLibrary.GLX.ARB_create_context_profile ||
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!_glfwLibrary.GLX.EXT_create_context_es2_profile)
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{
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_glfwSetError(GLFW_VERSION_UNAVAILABLE,
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"GLX: OpenGL ES 2.x requested but "
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"GLX_EXT_create_context_es2_profile is unavailable");
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return GL_FALSE;
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}
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setGLXattrib(attribs, index,
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GLX_CONTEXT_PROFILE_MASK_ARB,
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GLX_CONTEXT_ES2_PROFILE_BIT_EXT);
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}
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if (wndconfig->glForward || wndconfig->glDebug || wndconfig->glRobustness)
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{
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int flags = 0;
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if (wndconfig->glForward)
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flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
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if (wndconfig->glDebug)
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flags |= GLX_CONTEXT_DEBUG_BIT_ARB;
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if (wndconfig->glRobustness)
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flags |= GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB;
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setGLXattrib(attribs, index, GLX_CONTEXT_FLAGS_ARB, flags);
|
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}
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|
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if (wndconfig->glProfile)
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{
|
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int flags = 0;
|
||||
|
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if (!_glfwLibrary.GLX.ARB_create_context_profile)
|
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{
|
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_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
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"GLX: An OpenGL profile requested but "
|
||||
"GLX_ARB_create_context_profile is unavailable");
|
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return GL_FALSE;
|
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}
|
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|
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if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
|
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flags = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
|
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else if (wndconfig->glProfile == GLFW_OPENGL_COMPAT_PROFILE)
|
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flags = GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
|
||||
|
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setGLXattrib(attribs, index, GLX_CONTEXT_PROFILE_MASK_ARB, flags);
|
||||
}
|
||||
|
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if (wndconfig->glRobustness)
|
||||
{
|
||||
int strategy;
|
||||
|
||||
if (!_glfwLibrary.GLX.ARB_create_context_robustness)
|
||||
{
|
||||
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
||||
"GLX: An OpenGL robustness strategy was "
|
||||
"requested but GLX_ARB_create_context_robustness "
|
||||
"is unavailable");
|
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return GL_FALSE;
|
||||
}
|
||||
|
||||
if (wndconfig->glRobustness == GLFW_OPENGL_NO_RESET_NOTIFICATION)
|
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strategy = GLX_NO_RESET_NOTIFICATION_ARB;
|
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else if (wndconfig->glRobustness == GLFW_OPENGL_LOSE_CONTEXT_ON_RESET)
|
||||
strategy = GLX_LOSE_CONTEXT_ON_RESET_ARB;
|
||||
|
||||
setGLXattrib(attribs,
|
||||
index,
|
||||
GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
|
||||
strategy);
|
||||
}
|
||||
|
||||
setGLXattrib(attribs, index, None, None);
|
||||
|
||||
// This is the only place we set an Xlib error handler, and we only do
|
||||
// it because glXCreateContextAttribsARB generates a BadMatch error if
|
||||
// the requested OpenGL version is unavailable (instead of a civilized
|
||||
// response like returning NULL)
|
||||
XSetErrorHandler(errorHandler);
|
||||
|
||||
window->GLX.context =
|
||||
_glfwLibrary.GLX.CreateContextAttribsARB(_glfwLibrary.X11.display,
|
||||
*fbconfig,
|
||||
share,
|
||||
True,
|
||||
attribs);
|
||||
|
||||
// We are done, so unset the error handler again (see above)
|
||||
XSetErrorHandler(NULL);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (_glfwLibrary.GLX.SGIX_fbconfig)
|
||||
{
|
||||
window->GLX.context =
|
||||
_glfwLibrary.GLX.CreateContextWithConfigSGIX(_glfwLibrary.X11.display,
|
||||
*fbconfig,
|
||||
GLX_RGBA_TYPE,
|
||||
share,
|
||||
True);
|
||||
}
|
||||
else
|
||||
{
|
||||
window->GLX.context = glXCreateNewContext(_glfwLibrary.X11.display,
|
||||
*fbconfig,
|
||||
GLX_RGBA_TYPE,
|
||||
share,
|
||||
True);
|
||||
}
|
||||
}
|
||||
|
||||
XFree(fbconfig);
|
||||
|
||||
if (window->GLX.context == NULL)
|
||||
{
|
||||
// TODO: Handle all the various error codes here
|
||||
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"GLX: Failed to create OpenGL context");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
||||
#undef setGLXattrib
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
////// GLFW internal API //////
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
|
||||
//========================================================================
|
||||
// Initialize GLX
|
||||
//========================================================================
|
||||
|
||||
int _glfwInitOpenGL(void)
|
||||
{
|
||||
#ifdef _GLFW_DLOPEN_LIBGL
|
||||
int i;
|
||||
char* libGL_names[ ] =
|
||||
{
|
||||
"libGL.so",
|
||||
"libGL.so.1",
|
||||
"/usr/lib/libGL.so",
|
||||
"/usr/lib/libGL.so.1",
|
||||
NULL
|
||||
};
|
||||
|
||||
for (i = 0; libGL_names[i] != NULL; i++)
|
||||
{
|
||||
_glfwLibrary.GLX.libGL = dlopen(libGL_names[i], RTLD_LAZY | RTLD_GLOBAL);
|
||||
if (_glfwLibrary.GLX.libGL)
|
||||
break;
|
||||
}
|
||||
|
||||
if (!_glfwLibrary.GLX.libGL)
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR, "GLX: Failed to find libGL");
|
||||
return GL_FALSE;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Check if GLX is supported on this display
|
||||
if (!glXQueryExtension(_glfwLibrary.X11.display, NULL, NULL))
|
||||
{
|
||||
_glfwSetError(GLFW_API_UNAVAILABLE, "GLX: GLX support not found");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (!glXQueryVersion(_glfwLibrary.X11.display,
|
||||
&_glfwLibrary.GLX.majorVersion,
|
||||
&_glfwLibrary.GLX.minorVersion))
|
||||
{
|
||||
_glfwSetError(GLFW_API_UNAVAILABLE, "GLX: Failed to query GLX version");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_EXT_swap_control"))
|
||||
{
|
||||
_glfwLibrary.GLX.SwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)
|
||||
_glfwPlatformGetProcAddress("glXSwapIntervalEXT");
|
||||
|
||||
if (_glfwLibrary.GLX.SwapIntervalEXT)
|
||||
_glfwLibrary.GLX.EXT_swap_control = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_SGI_swap_control"))
|
||||
{
|
||||
_glfwLibrary.GLX.SwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)
|
||||
_glfwPlatformGetProcAddress("glXSwapIntervalSGI");
|
||||
|
||||
if (_glfwLibrary.GLX.SwapIntervalSGI)
|
||||
_glfwLibrary.GLX.SGI_swap_control = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_MESA_swap_control"))
|
||||
{
|
||||
_glfwLibrary.GLX.SwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC)
|
||||
_glfwPlatformGetProcAddress("glXSwapIntervalMESA");
|
||||
|
||||
if (_glfwLibrary.GLX.SwapIntervalMESA)
|
||||
_glfwLibrary.GLX.MESA_swap_control = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_SGIX_fbconfig"))
|
||||
{
|
||||
_glfwLibrary.GLX.GetFBConfigAttribSGIX = (PFNGLXGETFBCONFIGATTRIBSGIXPROC)
|
||||
_glfwPlatformGetProcAddress("glXGetFBConfigAttribSGIX");
|
||||
_glfwLibrary.GLX.ChooseFBConfigSGIX = (PFNGLXCHOOSEFBCONFIGSGIXPROC)
|
||||
_glfwPlatformGetProcAddress("glXChooseFBConfigSGIX");
|
||||
_glfwLibrary.GLX.CreateContextWithConfigSGIX = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC)
|
||||
_glfwPlatformGetProcAddress("glXCreateContextWithConfigSGIX");
|
||||
_glfwLibrary.GLX.GetVisualFromFBConfigSGIX = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC)
|
||||
_glfwPlatformGetProcAddress("glXGetVisualFromFBConfigSGIX");
|
||||
|
||||
if (_glfwLibrary.GLX.GetFBConfigAttribSGIX &&
|
||||
_glfwLibrary.GLX.ChooseFBConfigSGIX &&
|
||||
_glfwLibrary.GLX.CreateContextWithConfigSGIX &&
|
||||
_glfwLibrary.GLX.GetVisualFromFBConfigSGIX)
|
||||
{
|
||||
_glfwLibrary.GLX.SGIX_fbconfig = GL_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_ARB_multisample"))
|
||||
_glfwLibrary.GLX.ARB_multisample = GL_TRUE;
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context"))
|
||||
{
|
||||
_glfwLibrary.GLX.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)
|
||||
_glfwPlatformGetProcAddress("glXCreateContextAttribsARB");
|
||||
|
||||
if (_glfwLibrary.GLX.CreateContextAttribsARB)
|
||||
_glfwLibrary.GLX.ARB_create_context = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_robustness"))
|
||||
_glfwLibrary.GLX.ARB_create_context_robustness = GL_TRUE;
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_profile"))
|
||||
_glfwLibrary.GLX.ARB_create_context_profile = GL_TRUE;
|
||||
|
||||
if (_glfwPlatformExtensionSupported("GLX_EXT_create_context_es2_profile"))
|
||||
_glfwLibrary.GLX.EXT_create_context_es2_profile = GL_TRUE;
|
||||
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Terminate GLX
|
||||
//========================================================================
|
||||
|
||||
void _glfwTerminateOpenGL(void)
|
||||
{
|
||||
// Unload libGL.so if necessary
|
||||
#ifdef _GLFW_DLOPEN_LIBGL
|
||||
if (_glfwLibrary.GLX.libGL != NULL)
|
||||
{
|
||||
dlclose(_glfwLibrary.GLX.libGL);
|
||||
_glfwLibrary.GLX.libGL = NULL;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Prepare for creation of the OpenGL context
|
||||
//========================================================================
|
||||
|
||||
int _glfwCreateContext(_GLFWwindow* window,
|
||||
const _GLFWwndconfig* wndconfig,
|
||||
const _GLFWfbconfig* fbconfig)
|
||||
{
|
||||
_GLFWfbconfig closest;
|
||||
|
||||
// Choose the best available fbconfig
|
||||
{
|
||||
unsigned int fbcount;
|
||||
_GLFWfbconfig* fbconfigs;
|
||||
const _GLFWfbconfig* result;
|
||||
|
||||
fbconfigs = getFBConfigs(window, &fbcount);
|
||||
if (!fbconfigs)
|
||||
return GL_FALSE;
|
||||
|
||||
result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
|
||||
if (!result)
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"GLX: No GLXFBConfig matched the criteria");
|
||||
|
||||
free(fbconfigs);
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
closest = *result;
|
||||
free(fbconfigs);
|
||||
}
|
||||
|
||||
return createContext(window, wndconfig, closest.platformID);
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Destroy the OpenGL context
|
||||
//========================================================================
|
||||
|
||||
void _glfwDestroyContext(_GLFWwindow* window)
|
||||
{
|
||||
if (window->GLX.visual)
|
||||
{
|
||||
XFree(window->GLX.visual);
|
||||
window->GLX.visual = NULL;
|
||||
}
|
||||
|
||||
if (window->GLX.context)
|
||||
{
|
||||
glXDestroyContext(_glfwLibrary.X11.display, window->GLX.context);
|
||||
window->GLX.context = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
////// GLFW platform API //////
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
|
||||
//========================================================================
|
||||
// Make the OpenGL context associated with the specified window current
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformMakeContextCurrent(_GLFWwindow* window)
|
||||
{
|
||||
if (window)
|
||||
{
|
||||
glXMakeCurrent(_glfwLibrary.X11.display,
|
||||
window->X11.handle,
|
||||
window->GLX.context);
|
||||
}
|
||||
else
|
||||
glXMakeCurrent(_glfwLibrary.X11.display, None, NULL);
|
||||
|
||||
_glfwCurrentWindow = window;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Return the window object whose context is current
|
||||
//========================================================================
|
||||
|
||||
_GLFWwindow* _glfwPlatformGetCurrentContext(void)
|
||||
{
|
||||
return _glfwCurrentWindow;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Swap OpenGL buffers
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformSwapBuffers(_GLFWwindow* window)
|
||||
{
|
||||
glXSwapBuffers(_glfwLibrary.X11.display, window->X11.handle);
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Set double buffering swap interval
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformSwapInterval(int interval)
|
||||
{
|
||||
_GLFWwindow* window = _glfwCurrentWindow;
|
||||
|
||||
if (_glfwLibrary.GLX.EXT_swap_control)
|
||||
{
|
||||
_glfwLibrary.GLX.SwapIntervalEXT(_glfwLibrary.X11.display,
|
||||
window->X11.handle,
|
||||
interval);
|
||||
}
|
||||
else if (_glfwLibrary.GLX.MESA_swap_control)
|
||||
_glfwLibrary.GLX.SwapIntervalMESA(interval);
|
||||
else if (_glfwLibrary.GLX.SGI_swap_control)
|
||||
{
|
||||
if (interval > 0)
|
||||
_glfwLibrary.GLX.SwapIntervalSGI(interval);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Check if an OpenGL extension is available at runtime
|
||||
//========================================================================
|
||||
|
||||
int _glfwPlatformExtensionSupported(const char* extension)
|
||||
{
|
||||
const GLubyte* extensions;
|
||||
|
||||
// Get list of GLX extensions
|
||||
extensions = (const GLubyte*) glXQueryExtensionsString(_glfwLibrary.X11.display,
|
||||
_glfwLibrary.X11.screen);
|
||||
if (extensions != NULL)
|
||||
{
|
||||
if (_glfwStringInExtensionString(extension, extensions))
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Get the function pointer to an OpenGL function
|
||||
//========================================================================
|
||||
|
||||
GLFWglproc _glfwPlatformGetProcAddress(const char* procname)
|
||||
{
|
||||
return _glfw_glXGetProcAddress((const GLubyte*) procname);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user