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790 lines
26 KiB
790 lines
26 KiB
//======================================================================== |
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// GLFW 3.4 WGL - www.glfw.org |
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//------------------------------------------------------------------------ |
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// Copyright (c) 2002-2006 Marcus Geelnard |
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// Copyright (c) 2006-2019 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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// Please use C89 style variable declarations in this file because VS 2010 |
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//======================================================================== |
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#include "internal.h" |
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#include <stdlib.h> |
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#include <assert.h> |
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// Return the value corresponding to the specified attribute |
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// |
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static int findPixelFormatAttribValueWGL(const int* attribs, |
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int attribCount, |
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const int* values, |
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int attrib) |
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{ |
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int i; |
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for (i = 0; i < attribCount; i++) |
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{ |
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if (attribs[i] == attrib) |
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return values[i]; |
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} |
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR, |
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"WGL: Unknown pixel format attribute requested"); |
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return 0; |
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} |
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#define ADD_ATTRIB(a) \ |
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{ \ |
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assert((size_t) attribCount < sizeof(attribs) / sizeof(attribs[0])); \ |
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attribs[attribCount++] = a; \ |
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} |
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#define FIND_ATTRIB_VALUE(a) \ |
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findPixelFormatAttribValueWGL(attribs, attribCount, values, a) |
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// Return a list of available and usable framebuffer configs |
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// |
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static int choosePixelFormatWGL(_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 = 0, attribCount = 0; |
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int attribs[40]; |
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int values[sizeof(attribs) / sizeof(attribs[0])]; |
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if (_glfw.wgl.ARB_pixel_format) |
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{ |
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const int attrib = WGL_NUMBER_PIXEL_FORMATS_ARB; |
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if (!wglGetPixelFormatAttribivARB(window->context.wgl.dc, |
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1, 0, 1, &attrib, &nativeCount)) |
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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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ADD_ATTRIB(WGL_SUPPORT_OPENGL_ARB); |
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ADD_ATTRIB(WGL_DRAW_TO_WINDOW_ARB); |
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ADD_ATTRIB(WGL_PIXEL_TYPE_ARB); |
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ADD_ATTRIB(WGL_ACCELERATION_ARB); |
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ADD_ATTRIB(WGL_RED_BITS_ARB); |
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ADD_ATTRIB(WGL_RED_SHIFT_ARB); |
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ADD_ATTRIB(WGL_GREEN_BITS_ARB); |
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ADD_ATTRIB(WGL_GREEN_SHIFT_ARB); |
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ADD_ATTRIB(WGL_BLUE_BITS_ARB); |
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ADD_ATTRIB(WGL_BLUE_SHIFT_ARB); |
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ADD_ATTRIB(WGL_ALPHA_BITS_ARB); |
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ADD_ATTRIB(WGL_ALPHA_SHIFT_ARB); |
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ADD_ATTRIB(WGL_DEPTH_BITS_ARB); |
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ADD_ATTRIB(WGL_STENCIL_BITS_ARB); |
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ADD_ATTRIB(WGL_ACCUM_BITS_ARB); |
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ADD_ATTRIB(WGL_ACCUM_RED_BITS_ARB); |
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ADD_ATTRIB(WGL_ACCUM_GREEN_BITS_ARB); |
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ADD_ATTRIB(WGL_ACCUM_BLUE_BITS_ARB); |
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ADD_ATTRIB(WGL_ACCUM_ALPHA_BITS_ARB); |
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ADD_ATTRIB(WGL_AUX_BUFFERS_ARB); |
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ADD_ATTRIB(WGL_STEREO_ARB); |
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ADD_ATTRIB(WGL_DOUBLE_BUFFER_ARB); |
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if (_glfw.wgl.ARB_multisample) |
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ADD_ATTRIB(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 || _glfw.wgl.EXT_framebuffer_sRGB) |
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ADD_ATTRIB(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB); |
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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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ADD_ATTRIB(WGL_COLORSPACE_EXT); |
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} |
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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 = _glfw_calloc(nativeCount, sizeof(_GLFWfbconfig)); |
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for (i = 0; i < nativeCount; i++) |
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{ |
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_GLFWfbconfig* u = usableConfigs + usableCount; |
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pixelFormat = i + 1; |
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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 (!wglGetPixelFormatAttribivARB(window->context.wgl.dc, |
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pixelFormat, 0, |
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attribCount, |
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attribs, values)) |
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{ |
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR, |
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"WGL: Failed to retrieve pixel format attributes"); |
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_glfw_free(usableConfigs); |
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return 0; |
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} |
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if (!FIND_ATTRIB_VALUE(WGL_SUPPORT_OPENGL_ARB) || |
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!FIND_ATTRIB_VALUE(WGL_DRAW_TO_WINDOW_ARB)) |
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{ |
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continue; |
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} |
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if (FIND_ATTRIB_VALUE(WGL_PIXEL_TYPE_ARB) != WGL_TYPE_RGBA_ARB) |
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continue; |
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if (FIND_ATTRIB_VALUE(WGL_ACCELERATION_ARB) == WGL_NO_ACCELERATION_ARB) |
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continue; |
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if (FIND_ATTRIB_VALUE(WGL_DOUBLE_BUFFER_ARB) != fbconfig->doublebuffer) |
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continue; |
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u->redBits = FIND_ATTRIB_VALUE(WGL_RED_BITS_ARB); |
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u->greenBits = FIND_ATTRIB_VALUE(WGL_GREEN_BITS_ARB); |
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u->blueBits = FIND_ATTRIB_VALUE(WGL_BLUE_BITS_ARB); |
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u->alphaBits = FIND_ATTRIB_VALUE(WGL_ALPHA_BITS_ARB); |
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u->depthBits = FIND_ATTRIB_VALUE(WGL_DEPTH_BITS_ARB); |
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u->stencilBits = FIND_ATTRIB_VALUE(WGL_STENCIL_BITS_ARB); |
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u->accumRedBits = FIND_ATTRIB_VALUE(WGL_ACCUM_RED_BITS_ARB); |
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u->accumGreenBits = FIND_ATTRIB_VALUE(WGL_ACCUM_GREEN_BITS_ARB); |
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u->accumBlueBits = FIND_ATTRIB_VALUE(WGL_ACCUM_BLUE_BITS_ARB); |
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u->accumAlphaBits = FIND_ATTRIB_VALUE(WGL_ACCUM_ALPHA_BITS_ARB); |
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u->auxBuffers = FIND_ATTRIB_VALUE(WGL_AUX_BUFFERS_ARB); |
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if (FIND_ATTRIB_VALUE(WGL_STEREO_ARB)) |
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u->stereo = GLFW_TRUE; |
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if (_glfw.wgl.ARB_multisample) |
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u->samples = FIND_ATTRIB_VALUE(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 (FIND_ATTRIB_VALUE(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 (FIND_ATTRIB_VALUE(WGL_COLORSPACE_EXT) == WGL_COLORSPACE_SRGB_EXT) |
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u->sRGB = GLFW_TRUE; |
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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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pixelFormat, |
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sizeof(PIXELFORMATDESCRIPTOR), |
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&pfd)) |
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{ |
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_glfwInputErrorWin32(GLFW_PLATFORM_ERROR, |
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"WGL: Failed to describe pixel format"); |
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_glfw_free(usableConfigs); |
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return 0; |
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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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if (!!(pfd.dwFlags & PFD_DOUBLEBUFFER) != fbconfig->doublebuffer) |
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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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} |
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u->handle = pixelFormat; |
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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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_glfw_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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_glfw_free(usableConfigs); |
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return 0; |
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} |
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pixelFormat = (int) closest->handle; |
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_glfw_free(usableConfigs); |
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return pixelFormat; |
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} |
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#undef ADD_ATTRIB |
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#undef FIND_ATTRIB_VALUE |
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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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if (!window->monitor) |
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{ |
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// HACK: Use DwmFlush when desktop composition is enabled on Windows Vista and 7 |
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if (!IsWindows8OrGreater() && IsWindowsVistaOrGreater()) |
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{ |
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BOOL enabled = FALSE; |
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if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled) |
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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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} |
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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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if (!window->monitor) |
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{ |
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// HACK: Disable WGL swap interval when desktop composition is enabled on Windows |
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// Vista and 7 to avoid interfering with DWM vsync |
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if (!IsWindows8OrGreater() && IsWindowsVistaOrGreater()) |
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{ |
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BOOL enabled = FALSE; |
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if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled) |
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interval = 0; |
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} |
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} |
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if (_glfw.wgl.EXT_swap_control) |
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wglSwapIntervalEXT(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 = NULL; |
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if (_glfw.wgl.GetExtensionsStringARB) |
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extensions = wglGetExtensionsStringARB(wglGetCurrentDC()); |
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else if (_glfw.wgl.GetExtensionsStringEXT) |
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extensions = wglGetExtensionsStringEXT(); |
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if (!extensions) |
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return GLFW_FALSE; |
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return _glfwStringInExtensionString(extension, extensions); |
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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) _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, procname); |
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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 |
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// |
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GLFWbool _glfwInitWGL(void) |
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{ |
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PIXELFORMATDESCRIPTOR pfd; |
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HGLRC prc, rc; |
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HDC pdc, dc; |
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if (_glfw.wgl.instance) |
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return GLFW_TRUE; |
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_glfw.wgl.instance = _glfwPlatformLoadModule("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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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglCreateContext"); |
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_glfw.wgl.DeleteContext = (PFN_wglDeleteContext) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglDeleteContext"); |
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_glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetProcAddress"); |
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_glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetCurrentDC"); |
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_glfw.wgl.GetCurrentContext = (PFN_wglGetCurrentContext) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetCurrentContext"); |
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_glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglMakeCurrent"); |
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_glfw.wgl.ShareLists = (PFN_wglShareLists) |
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_glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglShareLists"); |
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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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dc = GetDC(_glfw.win32.helperWindowHandle); |
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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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|
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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 GLFW_FALSE; |
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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 GLFW_FALSE; |
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} |
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pdc = wglGetCurrentDC(); |
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prc = wglGetCurrentContext(); |
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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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wglMakeCurrent(pdc, prc); |
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wglDeleteContext(rc); |
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return GLFW_FALSE; |
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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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|
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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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|
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wglMakeCurrent(pdc, prc); |
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wglDeleteContext(rc); |
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return GLFW_TRUE; |
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} |
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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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_glfwPlatformFreeModule(_glfw.wgl.instance); |
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} |
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|
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#define SET_ATTRIB(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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|
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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; |
|
PIXELFORMATDESCRIPTOR pfd; |
|
HGLRC share = NULL; |
|
|
|
if (ctxconfig->share) |
|
share = ctxconfig->share->context.wgl.handle; |
|
|
|
window->context.wgl.dc = GetDC(window->win32.handle); |
|
if (!window->context.wgl.dc) |
|
{ |
|
_glfwInputError(GLFW_PLATFORM_ERROR, |
|
"WGL: Failed to retrieve DC for window"); |
|
return GLFW_FALSE; |
|
} |
|
|
|
pixelFormat = choosePixelFormatWGL(window, ctxconfig, fbconfig); |
|
if (!pixelFormat) |
|
return GLFW_FALSE; |
|
|
|
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) |
|
{ |
|
SET_ATTRIB(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, |
|
WGL_NO_RESET_NOTIFICATION_ARB); |
|
} |
|
else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET) |
|
{ |
|
SET_ATTRIB(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) |
|
{ |
|
SET_ATTRIB(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
|
WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB); |
|
} |
|
else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH) |
|
{ |
|
SET_ATTRIB(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
|
WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB); |
|
} |
|
} |
|
} |
|
|
|
if (ctxconfig->noerror) |
|
{ |
|
if (_glfw.wgl.ARB_create_context_no_error) |
|
SET_ATTRIB(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) |
|
{ |
|
SET_ATTRIB(WGL_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major); |
|
SET_ATTRIB(WGL_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor); |
|
} |
|
|
|
if (flags) |
|
SET_ATTRIB(WGL_CONTEXT_FLAGS_ARB, flags); |
|
|
|
if (mask) |
|
SET_ATTRIB(WGL_CONTEXT_PROFILE_MASK_ARB, mask); |
|
|
|
SET_ATTRIB(0, 0); |
|
|
|
window->context.wgl.handle = |
|
wglCreateContextAttribsARB(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 SET_ATTRIB |
|
|
|
GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* handle) |
|
{ |
|
_GLFWwindow* window = (_GLFWwindow*) handle; |
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
|
|
|
if (_glfw.platform.platformID != GLFW_PLATFORM_WIN32) |
|
{ |
|
_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, |
|
"WGL: Platform not initialized"); |
|
return NULL; |
|
} |
|
|
|
if (window->context.source != GLFW_NATIVE_CONTEXT_API) |
|
{ |
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL); |
|
return NULL; |
|
} |
|
|
|
return window->context.wgl.handle; |
|
} |
|
|
|
|