797 lines
26 KiB
C
797 lines
26 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) 2006-2019 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 <malloc.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 findPixelFormatAttribValue(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 addAttrib(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 findAttribValue(a) \
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findPixelFormatAttribValue(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 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 = 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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addAttrib(WGL_SUPPORT_OPENGL_ARB);
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addAttrib(WGL_DRAW_TO_WINDOW_ARB);
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addAttrib(WGL_PIXEL_TYPE_ARB);
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addAttrib(WGL_ACCELERATION_ARB);
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addAttrib(WGL_RED_BITS_ARB);
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addAttrib(WGL_RED_SHIFT_ARB);
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addAttrib(WGL_GREEN_BITS_ARB);
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addAttrib(WGL_GREEN_SHIFT_ARB);
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addAttrib(WGL_BLUE_BITS_ARB);
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addAttrib(WGL_BLUE_SHIFT_ARB);
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addAttrib(WGL_ALPHA_BITS_ARB);
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addAttrib(WGL_ALPHA_SHIFT_ARB);
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addAttrib(WGL_DEPTH_BITS_ARB);
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addAttrib(WGL_STENCIL_BITS_ARB);
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addAttrib(WGL_ACCUM_BITS_ARB);
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addAttrib(WGL_ACCUM_RED_BITS_ARB);
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addAttrib(WGL_ACCUM_GREEN_BITS_ARB);
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addAttrib(WGL_ACCUM_BLUE_BITS_ARB);
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addAttrib(WGL_ACCUM_ALPHA_BITS_ARB);
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addAttrib(WGL_AUX_BUFFERS_ARB);
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addAttrib(WGL_STEREO_ARB);
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addAttrib(WGL_DOUBLE_BUFFER_ARB);
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if (_glfw.wgl.ARB_multisample)
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addAttrib(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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addAttrib(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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addAttrib(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 = 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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free(usableConfigs);
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return 0;
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}
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if (!findAttribValue(WGL_SUPPORT_OPENGL_ARB) ||
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!findAttribValue(WGL_DRAW_TO_WINDOW_ARB))
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{
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continue;
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}
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if (findAttribValue(WGL_PIXEL_TYPE_ARB) != WGL_TYPE_RGBA_ARB)
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continue;
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if (findAttribValue(WGL_ACCELERATION_ARB) == WGL_NO_ACCELERATION_ARB)
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continue;
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u->redBits = findAttribValue(WGL_RED_BITS_ARB);
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u->greenBits = findAttribValue(WGL_GREEN_BITS_ARB);
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u->blueBits = findAttribValue(WGL_BLUE_BITS_ARB);
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u->alphaBits = findAttribValue(WGL_ALPHA_BITS_ARB);
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u->depthBits = findAttribValue(WGL_DEPTH_BITS_ARB);
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u->stencilBits = findAttribValue(WGL_STENCIL_BITS_ARB);
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u->accumRedBits = findAttribValue(WGL_ACCUM_RED_BITS_ARB);
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u->accumGreenBits = findAttribValue(WGL_ACCUM_GREEN_BITS_ARB);
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u->accumBlueBits = findAttribValue(WGL_ACCUM_BLUE_BITS_ARB);
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u->accumAlphaBits = findAttribValue(WGL_ACCUM_ALPHA_BITS_ARB);
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u->auxBuffers = findAttribValue(WGL_AUX_BUFFERS_ARB);
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if (findAttribValue(WGL_STEREO_ARB))
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u->stereo = GLFW_TRUE;
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if (findAttribValue(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 = findAttribValue(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 (findAttribValue(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 (findAttribValue(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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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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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 = 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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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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#undef addAttrib
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#undef findAttribValue
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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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if (IsWindowsVistaOrGreater())
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{
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// DWM Composition is always enabled on Win8+
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BOOL enabled = IsWindows8OrGreater();
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// HACK: Use DwmFlush when desktop composition is enabled
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if (enabled ||
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(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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if (IsWindowsVistaOrGreater())
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{
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// DWM Composition is always enabled on Win8+
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BOOL enabled = IsWindows8OrGreater();
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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 (enabled ||
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(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) GetProcAddress(_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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//////////////////////////////////////////////////////////////////////////
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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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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 = 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.GetCurrentContext = (PFN_wglGetCurrentContext)
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GetProcAddress(_glfw.wgl.instance, "wglGetCurrentContext");
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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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// 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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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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// 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");
|
|
_glfw.wgl.ARB_create_context_profile =
|
|
extensionSupportedWGL("WGL_ARB_create_context_profile");
|
|
_glfw.wgl.EXT_create_context_es2_profile =
|
|
extensionSupportedWGL("WGL_EXT_create_context_es2_profile");
|
|
_glfw.wgl.ARB_create_context_robustness =
|
|
extensionSupportedWGL("WGL_ARB_create_context_robustness");
|
|
_glfw.wgl.ARB_create_context_no_error =
|
|
extensionSupportedWGL("WGL_ARB_create_context_no_error");
|
|
_glfw.wgl.EXT_swap_control =
|
|
extensionSupportedWGL("WGL_EXT_swap_control");
|
|
_glfw.wgl.EXT_colorspace =
|
|
extensionSupportedWGL("WGL_EXT_colorspace");
|
|
_glfw.wgl.ARB_pixel_format =
|
|
extensionSupportedWGL("WGL_ARB_pixel_format");
|
|
_glfw.wgl.ARB_context_flush_control =
|
|
extensionSupportedWGL("WGL_ARB_context_flush_control");
|
|
|
|
wglMakeCurrent(pdc, prc);
|
|
wglDeleteContext(rc);
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
// Terminate WGL
|
|
//
|
|
void _glfwTerminateWGL(void)
|
|
{
|
|
if (_glfw.wgl.instance)
|
|
FreeLibrary(_glfw.wgl.instance);
|
|
}
|
|
|
|
#define setAttrib(a, v) \
|
|
{ \
|
|
assert(((size_t) index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
|
|
attribs[index++] = a; \
|
|
attribs[index++] = v; \
|
|
}
|
|
|
|
// Create the OpenGL or OpenGL ES context
|
|
//
|
|
GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
|
|
const _GLFWctxconfig* ctxconfig,
|
|
const _GLFWfbconfig* fbconfig)
|
|
{
|
|
int attribs[40];
|
|
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 = choosePixelFormat(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)
|
|
{
|
|
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 =
|
|
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 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;
|
|
}
|
|
|