mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-23 10:48:51 -05:00
32e78aeb2e
This completes support for window framebuffer transparency on Windows, macOS and X11. Note that the hint/attribute may be renamed before release to clarify its relationship to GLFW_OPACITY. Fixes #197. Closes #1079. Related to #663. Related to #715. Related to #723. Related to #1078.
732 lines
24 KiB
C
732 lines
24 KiB
C
//========================================================================
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// GLFW 3.3 WGL - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2016 Camilla Löwy <elmindreda@glfw.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 <stdlib.h>
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#include <malloc.h>
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#include <assert.h>
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// Returns the specified attribute of the specified pixel format
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//
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static int getPixelFormatAttrib(_GLFWwindow* window, int pixelFormat, int attrib)
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{
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int value = 0;
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assert(_glfw.wgl.ARB_pixel_format);
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if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
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pixelFormat,
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0, 1, &attrib, &value))
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to retrieve pixel format attribute");
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return 0;
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}
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return value;
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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 int choosePixelFormat(_GLFWwindow* window,
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const _GLFWctxconfig* ctxconfig,
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const _GLFWfbconfig* fbconfig)
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{
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_GLFWfbconfig* usableConfigs;
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const _GLFWfbconfig* closest;
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int i, pixelFormat, nativeCount, usableCount;
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if (_glfw.wgl.ARB_pixel_format)
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{
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nativeCount = getPixelFormatAttrib(window,
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1,
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WGL_NUMBER_PIXEL_FORMATS_ARB);
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}
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else
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{
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nativeCount = DescribePixelFormat(window->context.wgl.dc,
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1,
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sizeof(PIXELFORMATDESCRIPTOR),
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NULL);
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}
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usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
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usableCount = 0;
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for (i = 0; i < nativeCount; i++)
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{
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const int n = i + 1;
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_GLFWfbconfig* u = usableConfigs + usableCount;
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if (_glfw.wgl.ARB_pixel_format)
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{
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// Get pixel format attributes through "modern" extension
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if (!getPixelFormatAttrib(window, n, WGL_SUPPORT_OPENGL_ARB) ||
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!getPixelFormatAttrib(window, n, WGL_DRAW_TO_WINDOW_ARB))
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{
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continue;
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}
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if (getPixelFormatAttrib(window, n, WGL_PIXEL_TYPE_ARB) !=
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WGL_TYPE_RGBA_ARB)
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{
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continue;
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}
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if (getPixelFormatAttrib(window, n, WGL_ACCELERATION_ARB) ==
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WGL_NO_ACCELERATION_ARB)
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{
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continue;
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}
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u->redBits = getPixelFormatAttrib(window, n, WGL_RED_BITS_ARB);
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u->greenBits = getPixelFormatAttrib(window, n, WGL_GREEN_BITS_ARB);
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u->blueBits = getPixelFormatAttrib(window, n, WGL_BLUE_BITS_ARB);
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u->alphaBits = getPixelFormatAttrib(window, n, WGL_ALPHA_BITS_ARB);
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u->depthBits = getPixelFormatAttrib(window, n, WGL_DEPTH_BITS_ARB);
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u->stencilBits = getPixelFormatAttrib(window, n, WGL_STENCIL_BITS_ARB);
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u->accumRedBits = getPixelFormatAttrib(window, n, WGL_ACCUM_RED_BITS_ARB);
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u->accumGreenBits = getPixelFormatAttrib(window, n, WGL_ACCUM_GREEN_BITS_ARB);
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u->accumBlueBits = getPixelFormatAttrib(window, n, WGL_ACCUM_BLUE_BITS_ARB);
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u->accumAlphaBits = getPixelFormatAttrib(window, n, WGL_ACCUM_ALPHA_BITS_ARB);
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u->auxBuffers = getPixelFormatAttrib(window, n, WGL_AUX_BUFFERS_ARB);
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if (getPixelFormatAttrib(window, n, WGL_STEREO_ARB))
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u->stereo = GLFW_TRUE;
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if (getPixelFormatAttrib(window, n, WGL_DOUBLE_BUFFER_ARB))
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u->doublebuffer = GLFW_TRUE;
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if (_glfw.wgl.ARB_multisample)
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u->samples = getPixelFormatAttrib(window, n, WGL_SAMPLES_ARB);
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if (ctxconfig->client == GLFW_OPENGL_API)
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{
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if (_glfw.wgl.ARB_framebuffer_sRGB ||
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_glfw.wgl.EXT_framebuffer_sRGB)
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{
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if (getPixelFormatAttrib(window, n, WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB))
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u->sRGB = GLFW_TRUE;
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}
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}
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else
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{
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if (_glfw.wgl.EXT_colorspace)
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{
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if (getPixelFormatAttrib(window, n, WGL_COLORSPACE_EXT) ==
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WGL_COLORSPACE_SRGB_EXT)
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{
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u->sRGB = GLFW_TRUE;
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}
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}
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}
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}
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else
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{
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// Get pixel format attributes through legacy PFDs
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PIXELFORMATDESCRIPTOR pfd;
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if (!DescribePixelFormat(window->context.wgl.dc,
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n,
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sizeof(PIXELFORMATDESCRIPTOR),
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&pfd))
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{
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continue;
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}
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if (!(pfd.dwFlags & PFD_DRAW_TO_WINDOW) ||
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!(pfd.dwFlags & PFD_SUPPORT_OPENGL))
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{
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continue;
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}
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if (!(pfd.dwFlags & PFD_GENERIC_ACCELERATED) &&
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(pfd.dwFlags & PFD_GENERIC_FORMAT))
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{
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continue;
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}
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if (pfd.iPixelType != PFD_TYPE_RGBA)
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continue;
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u->redBits = pfd.cRedBits;
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u->greenBits = pfd.cGreenBits;
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u->blueBits = pfd.cBlueBits;
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u->alphaBits = pfd.cAlphaBits;
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u->depthBits = pfd.cDepthBits;
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u->stencilBits = pfd.cStencilBits;
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u->accumRedBits = pfd.cAccumRedBits;
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u->accumGreenBits = pfd.cAccumGreenBits;
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u->accumBlueBits = pfd.cAccumBlueBits;
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u->accumAlphaBits = pfd.cAccumAlphaBits;
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u->auxBuffers = pfd.cAuxBuffers;
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if (pfd.dwFlags & PFD_STEREO)
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u->stereo = GLFW_TRUE;
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if (pfd.dwFlags & PFD_DOUBLEBUFFER)
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u->doublebuffer = GLFW_TRUE;
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}
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u->handle = n;
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usableCount++;
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}
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if (!usableCount)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"WGL: The driver does not appear to support OpenGL");
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free(usableConfigs);
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return 0;
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}
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closest = _glfwChooseFBConfig(fbconfig, usableConfigs, usableCount);
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if (!closest)
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{
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_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
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"WGL: Failed to find a suitable pixel format");
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free(usableConfigs);
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return 0;
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}
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pixelFormat = (int) closest->handle;
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free(usableConfigs);
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return pixelFormat;
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}
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static void makeContextCurrentWGL(_GLFWwindow* window)
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{
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if (window)
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{
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if (wglMakeCurrent(window->context.wgl.dc, window->context.wgl.handle))
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_glfwPlatformSetTls(&_glfw.contextSlot, window);
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else
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to make context current");
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_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
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}
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}
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else
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{
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if (!wglMakeCurrent(NULL, NULL))
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to clear current context");
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}
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_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
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}
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}
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static void swapBuffersWGL(_GLFWwindow* window)
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{
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// HACK: Use DwmFlush when desktop composition is enabled
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if (_glfwIsCompositionEnabledWin32() && !window->monitor)
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{
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int count = abs(window->context.wgl.interval);
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while (count--)
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DwmFlush();
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}
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SwapBuffers(window->context.wgl.dc);
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}
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static void swapIntervalWGL(int interval)
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{
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_GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
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window->context.wgl.interval = interval;
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// HACK: Disable WGL swap interval when desktop composition is enabled to
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// avoid interfering with DWM vsync
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if (_glfwIsCompositionEnabledWin32() && !window->monitor)
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interval = 0;
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if (_glfw.wgl.EXT_swap_control)
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_glfw.wgl.SwapIntervalEXT(interval);
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}
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static int extensionSupportedWGL(const char* extension)
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{
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const char* extensions;
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if (_glfw.wgl.GetExtensionsStringEXT)
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{
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extensions = _glfw.wgl.GetExtensionsStringEXT();
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if (extensions)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return GLFW_TRUE;
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}
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}
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if (_glfw.wgl.GetExtensionsStringARB)
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{
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extensions = _glfw.wgl.GetExtensionsStringARB(wglGetCurrentDC());
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if (extensions)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return GLFW_TRUE;
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}
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}
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return GLFW_FALSE;
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}
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static GLFWglproc getProcAddressWGL(const char* procname)
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{
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const GLFWglproc proc = (GLFWglproc) wglGetProcAddress(procname);
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if (proc)
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return proc;
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return (GLFWglproc) GetProcAddress(_glfw.wgl.instance, procname);
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}
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// Destroy the OpenGL context
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//
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static void destroyContextWGL(_GLFWwindow* window)
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{
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if (window->context.wgl.handle)
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{
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wglDeleteContext(window->context.wgl.handle);
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window->context.wgl.handle = NULL;
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}
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}
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// Initialize WGL-specific extensions
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//
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static void loadWGLExtensions(void)
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{
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PIXELFORMATDESCRIPTOR pfd;
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HGLRC rc;
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HDC dc = GetDC(_glfw.win32.helperWindowHandle);;
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_glfw.wgl.extensionsLoaded = GLFW_TRUE;
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// NOTE: A dummy context has to be created for opengl32.dll to load the
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// OpenGL ICD, from which we can then query WGL extensions
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// NOTE: This code will accept the Microsoft GDI ICD; accelerated context
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// creation failure occurs during manual pixel format enumeration
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ZeroMemory(&pfd, sizeof(pfd));
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pfd.nSize = sizeof(pfd);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 24;
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if (!SetPixelFormat(dc, ChoosePixelFormat(dc, &pfd), &pfd))
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to set pixel format for dummy context");
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return;
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}
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rc = wglCreateContext(dc);
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if (!rc)
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to create dummy context");
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return;
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}
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if (!wglMakeCurrent(dc, rc))
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to make dummy context current");
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wglDeleteContext(rc);
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return;
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}
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// NOTE: Functions must be loaded first as they're needed to retrieve the
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// extension string that tells us whether the functions are supported
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_glfw.wgl.GetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)
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wglGetProcAddress("wglGetExtensionsStringEXT");
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_glfw.wgl.GetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)
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wglGetProcAddress("wglGetExtensionsStringARB");
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_glfw.wgl.CreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
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wglGetProcAddress("wglCreateContextAttribsARB");
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_glfw.wgl.SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)
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wglGetProcAddress("wglSwapIntervalEXT");
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_glfw.wgl.GetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)
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wglGetProcAddress("wglGetPixelFormatAttribivARB");
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// NOTE: WGL_ARB_extensions_string and WGL_EXT_extensions_string are not
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// checked below as we are already using them
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_glfw.wgl.ARB_multisample =
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extensionSupportedWGL("WGL_ARB_multisample");
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_glfw.wgl.ARB_framebuffer_sRGB =
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extensionSupportedWGL("WGL_ARB_framebuffer_sRGB");
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_glfw.wgl.EXT_framebuffer_sRGB =
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extensionSupportedWGL("WGL_EXT_framebuffer_sRGB");
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_glfw.wgl.ARB_create_context =
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extensionSupportedWGL("WGL_ARB_create_context");
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_glfw.wgl.ARB_create_context_profile =
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extensionSupportedWGL("WGL_ARB_create_context_profile");
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_glfw.wgl.EXT_create_context_es2_profile =
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extensionSupportedWGL("WGL_EXT_create_context_es2_profile");
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_glfw.wgl.ARB_create_context_robustness =
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extensionSupportedWGL("WGL_ARB_create_context_robustness");
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_glfw.wgl.ARB_create_context_no_error =
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extensionSupportedWGL("WGL_ARB_create_context_no_error");
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_glfw.wgl.EXT_swap_control =
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extensionSupportedWGL("WGL_EXT_swap_control");
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_glfw.wgl.EXT_colorspace =
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extensionSupportedWGL("WGL_EXT_colorspace");
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_glfw.wgl.ARB_pixel_format =
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extensionSupportedWGL("WGL_ARB_pixel_format");
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_glfw.wgl.ARB_context_flush_control =
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extensionSupportedWGL("WGL_ARB_context_flush_control");
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wglMakeCurrent(dc, NULL);
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wglDeleteContext(rc);
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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// Initialize WGL
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//
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GLFWbool _glfwInitWGL(void)
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{
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if (_glfw.wgl.instance)
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return GLFW_TRUE;
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_glfw.wgl.instance = LoadLibraryA("opengl32.dll");
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if (!_glfw.wgl.instance)
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{
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
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"WGL: Failed to load opengl32.dll");
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return GLFW_FALSE;
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}
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_glfw.wgl.CreateContext = (PFN_wglCreateContext)
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GetProcAddress(_glfw.wgl.instance, "wglCreateContext");
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_glfw.wgl.DeleteContext = (PFN_wglDeleteContext)
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GetProcAddress(_glfw.wgl.instance, "wglDeleteContext");
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_glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress)
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GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress");
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_glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC)
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GetProcAddress(_glfw.wgl.instance, "wglGetCurrentDC");
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_glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent)
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GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent");
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_glfw.wgl.ShareLists = (PFN_wglShareLists)
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GetProcAddress(_glfw.wgl.instance, "wglShareLists");
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return GLFW_TRUE;
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}
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// Terminate WGL
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//
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void _glfwTerminateWGL(void)
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{
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if (_glfw.wgl.instance)
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FreeLibrary(_glfw.wgl.instance);
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}
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#define setAttrib(a, v) \
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{ \
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assert((size_t) (index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
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attribs[index++] = a; \
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attribs[index++] = v; \
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}
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// Create the OpenGL or OpenGL ES context
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//
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GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
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const _GLFWctxconfig* ctxconfig,
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const _GLFWfbconfig* fbconfig)
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{
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int attribs[40];
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int pixelFormat;
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PIXELFORMATDESCRIPTOR pfd;
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HGLRC share = NULL;
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if (!_glfw.wgl.extensionsLoaded)
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loadWGLExtensions();
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if (ctxconfig->share)
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share = ctxconfig->share->context.wgl.handle;
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window->context.wgl.dc = GetDC(window->win32.handle);
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if (!window->context.wgl.dc)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"WGL: Failed to retrieve DC for window");
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return GLFW_FALSE;
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}
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pixelFormat = choosePixelFormat(window, ctxconfig, fbconfig);
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if (!pixelFormat)
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return GLFW_FALSE;
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if (!DescribePixelFormat(window->context.wgl.dc,
|
|
pixelFormat, sizeof(pfd), &pfd))
|
|
{
|
|
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
|
|
"WGL: Failed to retrieve PFD for selected pixel format");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (!SetPixelFormat(window->context.wgl.dc, pixelFormat, &pfd))
|
|
{
|
|
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
|
|
"WGL: Failed to set selected pixel format");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
if (ctxconfig->forward)
|
|
{
|
|
if (!_glfw.wgl.ARB_create_context)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: A forward compatible OpenGL context requested but WGL_ARB_create_context is unavailable");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
|
|
if (ctxconfig->profile)
|
|
{
|
|
if (!_glfw.wgl.ARB_create_context_profile)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: OpenGL profile requested but WGL_ARB_create_context_profile is unavailable");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!_glfw.wgl.ARB_create_context ||
|
|
!_glfw.wgl.ARB_create_context_profile ||
|
|
!_glfw.wgl.EXT_create_context_es2_profile)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"WGL: OpenGL ES requested but WGL_ARB_create_context_es2_profile is unavailable");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
|
|
if (_glfw.wgl.ARB_create_context)
|
|
{
|
|
int index = 0, mask = 0, flags = 0;
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
if (ctxconfig->forward)
|
|
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
|
|
|
|
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
|
|
mask |= WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
|
|
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
|
|
mask |= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
|
|
}
|
|
else
|
|
mask |= WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
|
|
|
|
if (ctxconfig->debug)
|
|
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
|
|
|
|
if (ctxconfig->robustness)
|
|
{
|
|
if (_glfw.wgl.ARB_create_context_robustness)
|
|
{
|
|
if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION)
|
|
{
|
|
setAttrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
|
|
WGL_NO_RESET_NOTIFICATION_ARB);
|
|
}
|
|
else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET)
|
|
{
|
|
setAttrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
|
|
WGL_LOSE_CONTEXT_ON_RESET_ARB);
|
|
}
|
|
|
|
flags |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;
|
|
}
|
|
}
|
|
|
|
if (ctxconfig->release)
|
|
{
|
|
if (_glfw.wgl.ARB_context_flush_control)
|
|
{
|
|
if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE)
|
|
{
|
|
setAttrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB,
|
|
WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB);
|
|
}
|
|
else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH)
|
|
{
|
|
setAttrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB,
|
|
WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ctxconfig->noerror)
|
|
{
|
|
if (_glfw.wgl.ARB_create_context_no_error)
|
|
setAttrib(WGL_CONTEXT_OPENGL_NO_ERROR_ARB, GLFW_TRUE);
|
|
}
|
|
|
|
// NOTE: Only request an explicitly versioned context when necessary, as
|
|
// explicitly requesting version 1.0 does not always return the
|
|
// highest version supported by the driver
|
|
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
|
|
{
|
|
setAttrib(WGL_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major);
|
|
setAttrib(WGL_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor);
|
|
}
|
|
|
|
if (flags)
|
|
setAttrib(WGL_CONTEXT_FLAGS_ARB, flags);
|
|
|
|
if (mask)
|
|
setAttrib(WGL_CONTEXT_PROFILE_MASK_ARB, mask);
|
|
|
|
setAttrib(0, 0);
|
|
|
|
window->context.wgl.handle =
|
|
_glfw.wgl.CreateContextAttribsARB(window->context.wgl.dc,
|
|
share, attribs);
|
|
if (!window->context.wgl.handle)
|
|
{
|
|
const DWORD error = GetLastError();
|
|
|
|
if (error == (0xc0070000 | ERROR_INVALID_VERSION_ARB))
|
|
{
|
|
if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Driver does not support OpenGL version %i.%i",
|
|
ctxconfig->major,
|
|
ctxconfig->minor);
|
|
}
|
|
else
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Driver does not support OpenGL ES version %i.%i",
|
|
ctxconfig->major,
|
|
ctxconfig->minor);
|
|
}
|
|
}
|
|
else if (error == (0xc0070000 | ERROR_INVALID_PROFILE_ARB))
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Driver does not support the requested OpenGL profile");
|
|
}
|
|
else if (error == (0xc0070000 | ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB))
|
|
{
|
|
_glfwInputError(GLFW_INVALID_VALUE,
|
|
"WGL: The share context is not compatible with the requested context");
|
|
}
|
|
else
|
|
{
|
|
if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Failed to create OpenGL context");
|
|
}
|
|
else
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Failed to create OpenGL ES context");
|
|
}
|
|
}
|
|
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
window->context.wgl.handle = wglCreateContext(window->context.wgl.dc);
|
|
if (!window->context.wgl.handle)
|
|
{
|
|
_glfwInputErrorWin32(GLFW_VERSION_UNAVAILABLE,
|
|
"WGL: Failed to create OpenGL context");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (share)
|
|
{
|
|
if (!wglShareLists(share, window->context.wgl.handle))
|
|
{
|
|
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
|
|
"WGL: Failed to enable sharing with specified OpenGL context");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
window->context.makeCurrent = makeContextCurrentWGL;
|
|
window->context.swapBuffers = swapBuffersWGL;
|
|
window->context.swapInterval = swapIntervalWGL;
|
|
window->context.extensionSupported = extensionSupportedWGL;
|
|
window->context.getProcAddress = getProcAddressWGL;
|
|
window->context.destroy = destroyContextWGL;
|
|
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
#undef setAttrib
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW native API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* handle)
|
|
{
|
|
_GLFWwindow* window = (_GLFWwindow*) handle;
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
if (window->context.client == GLFW_NO_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return NULL;
|
|
}
|
|
|
|
return window->context.wgl.handle;
|
|
}
|
|
|