mirror of
https://github.com/glfw/glfw.git
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133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
//========================================================================
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// GLFW - An OpenGL library
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// Platform: Win32/WGL
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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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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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//========================================================================
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// Make the OpenGL context associated with the specified window current
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//========================================================================
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void _glfwPlatformMakeContextCurrent(_GLFWwindow* window)
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{
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if (window)
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wglMakeCurrent(window->WGL.DC, window->WGL.context);
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else
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wglMakeCurrent(NULL, NULL);
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}
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//========================================================================
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// Swap buffers (double-buffering)
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//========================================================================
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void _glfwPlatformSwapBuffers(void)
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{
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_GLFWwindow* window = _glfwLibrary.currentWindow;
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SwapBuffers(window->WGL.DC);
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}
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//========================================================================
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// Set double buffering swap interval
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//========================================================================
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void _glfwPlatformSwapInterval(int interval)
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{
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_GLFWwindow* window = _glfwLibrary.currentWindow;
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if (window->WGL.EXT_swap_control)
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window->WGL.SwapIntervalEXT(interval);
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}
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//========================================================================
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// Check if the current context supports the specified WGL extension
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//========================================================================
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int _glfwPlatformExtensionSupported(const char* extension)
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{
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const GLubyte* extensions;
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_GLFWwindow* window = _glfwLibrary.currentWindow;
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if (window->WGL.GetExtensionsStringEXT != NULL)
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{
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extensions = (GLubyte*) window->WGL.GetExtensionsStringEXT();
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if (extensions != NULL)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return GL_TRUE;
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}
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}
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if (window->WGL.GetExtensionsStringARB != NULL)
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{
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extensions = (GLubyte*) window->WGL.GetExtensionsStringARB(window->WGL.DC);
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if (extensions != NULL)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return GL_TRUE;
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}
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}
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return GL_FALSE;
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}
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//========================================================================
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// Get the function pointer to an OpenGL function
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//========================================================================
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GLFWglproc _glfwPlatformGetProcAddress(const char* procname)
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{
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return (GLFWglproc) wglGetProcAddress(procname);
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}
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//========================================================================
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// Copies the specified OpenGL state categories from src to dst
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//========================================================================
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void _glfwPlatformCopyContext(_GLFWwindow* src, _GLFWwindow* dst, unsigned long mask)
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{
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if (!wglCopyContext(src->WGL.context, dst->WGL.context, mask))
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{
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_glfwSetError(GLFW_PLATFORM_ERROR,
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"Win32/WGL: Failed to copy OpenGL context attributes");
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}
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}
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