mirror of
https://github.com/glfw/glfw.git
synced 2026-09-22 16:52:57 +00:00
Renamed context module files.
This commit is contained in:
Camilla Berglund
@@ -0,0 +1,639 @@
|
||||
//========================================================================
|
||||
// GLFW - An OpenGL library
|
||||
// Platform: Win32/WGL
|
||||
// API version: 3.0
|
||||
// WWW: http://www.glfw.org/
|
||||
//------------------------------------------------------------------------
|
||||
// Copyright (c) 2002-2006 Marcus Geelnard
|
||||
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
|
||||
//
|
||||
// This software is provided 'as-is', without any express or implied
|
||||
// warranty. In no event will the authors be held liable for any damages
|
||||
// arising from the use of this software.
|
||||
//
|
||||
// Permission is granted to anyone to use this software for any purpose,
|
||||
// including commercial applications, and to alter it and redistribute it
|
||||
// freely, subject to the following restrictions:
|
||||
//
|
||||
// 1. The origin of this software must not be misrepresented; you must not
|
||||
// claim that you wrote the original software. If you use this software
|
||||
// in a product, an acknowledgment in the product documentation would
|
||||
// be appreciated but is not required.
|
||||
//
|
||||
// 2. Altered source versions must be plainly marked as such, and must not
|
||||
// be misrepresented as being the original software.
|
||||
//
|
||||
// 3. This notice may not be removed or altered from any source
|
||||
// distribution.
|
||||
//
|
||||
//========================================================================
|
||||
|
||||
#include "internal.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <malloc.h>
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Thread local storage attribute macro
|
||||
//========================================================================
|
||||
#if defined(_MSC_VER)
|
||||
#define _GLFW_TLS __declspec(thread)
|
||||
#elif defined(__GNUC__)
|
||||
#define _GLFW_TLS __thread
|
||||
#else
|
||||
#define _GLFW_TLS
|
||||
#endif
|
||||
|
||||
|
||||
//========================================================================
|
||||
// The per-thread current context/window pointer
|
||||
//========================================================================
|
||||
static _GLFW_TLS _GLFWwindow* _glfwCurrentWindow = NULL;
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Initialize WGL-specific extensions
|
||||
// This function is called once before initial context creation, i.e. before
|
||||
// any WGL extensions could be present. This is done in order to have both
|
||||
// extension variable clearing and loading in the same place, hopefully
|
||||
// decreasing the possibility of forgetting to add one without the other.
|
||||
//========================================================================
|
||||
|
||||
static void initWGLExtensions(_GLFWwindow* window)
|
||||
{
|
||||
// This needs to include every function pointer loaded below
|
||||
window->WGL.SwapIntervalEXT = NULL;
|
||||
window->WGL.GetPixelFormatAttribivARB = NULL;
|
||||
window->WGL.GetExtensionsStringARB = NULL;
|
||||
window->WGL.GetExtensionsStringEXT = NULL;
|
||||
window->WGL.CreateContextAttribsARB = NULL;
|
||||
|
||||
// This needs to include every extension used below except for
|
||||
// WGL_ARB_extensions_string and WGL_EXT_extensions_string
|
||||
window->WGL.ARB_multisample = GL_FALSE;
|
||||
window->WGL.ARB_create_context = GL_FALSE;
|
||||
window->WGL.ARB_create_context_profile = GL_FALSE;
|
||||
window->WGL.EXT_create_context_es2_profile = GL_FALSE;
|
||||
window->WGL.ARB_create_context_robustness = GL_FALSE;
|
||||
window->WGL.EXT_swap_control = GL_FALSE;
|
||||
window->WGL.ARB_pixel_format = GL_FALSE;
|
||||
|
||||
window->WGL.GetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)
|
||||
wglGetProcAddress("wglGetExtensionsStringEXT");
|
||||
if (!window->WGL.GetExtensionsStringEXT)
|
||||
{
|
||||
window->WGL.GetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)
|
||||
wglGetProcAddress("wglGetExtensionsStringARB");
|
||||
if (!window->WGL.GetExtensionsStringARB)
|
||||
return;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("WGL_ARB_multisample"))
|
||||
window->WGL.ARB_multisample = GL_TRUE;
|
||||
|
||||
if (_glfwPlatformExtensionSupported("WGL_ARB_create_context"))
|
||||
{
|
||||
window->WGL.CreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
|
||||
wglGetProcAddress("wglCreateContextAttribsARB");
|
||||
|
||||
if (window->WGL.CreateContextAttribsARB)
|
||||
window->WGL.ARB_create_context = GL_TRUE;
|
||||
}
|
||||
|
||||
if (window->WGL.ARB_create_context)
|
||||
{
|
||||
if (_glfwPlatformExtensionSupported("WGL_ARB_create_context_profile"))
|
||||
window->WGL.ARB_create_context_profile = GL_TRUE;
|
||||
}
|
||||
|
||||
if (window->WGL.ARB_create_context &&
|
||||
window->WGL.ARB_create_context_profile)
|
||||
{
|
||||
if (_glfwPlatformExtensionSupported("WGL_EXT_create_context_es2_profile"))
|
||||
window->WGL.EXT_create_context_es2_profile = GL_TRUE;
|
||||
}
|
||||
|
||||
if (window->WGL.ARB_create_context)
|
||||
{
|
||||
if (_glfwPlatformExtensionSupported("WGL_ARB_create_context_robustness"))
|
||||
window->WGL.ARB_create_context_robustness = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("WGL_EXT_swap_control"))
|
||||
{
|
||||
window->WGL.SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)
|
||||
wglGetProcAddress("wglSwapIntervalEXT");
|
||||
|
||||
if (window->WGL.SwapIntervalEXT)
|
||||
window->WGL.EXT_swap_control = GL_TRUE;
|
||||
}
|
||||
|
||||
if (_glfwPlatformExtensionSupported("WGL_ARB_pixel_format"))
|
||||
{
|
||||
window->WGL.GetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)
|
||||
wglGetProcAddress("wglGetPixelFormatAttribivARB");
|
||||
|
||||
if (window->WGL.GetPixelFormatAttribivARB)
|
||||
window->WGL.ARB_pixel_format = GL_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Returns the specified attribute of the specified pixel format
|
||||
// NOTE: Do not call this unless we have found WGL_ARB_pixel_format
|
||||
//========================================================================
|
||||
|
||||
static int getPixelFormatAttrib(_GLFWwindow* window, int pixelFormat, int attrib)
|
||||
{
|
||||
int value = 0;
|
||||
|
||||
if (!window->WGL.GetPixelFormatAttribivARB(window->WGL.DC,
|
||||
pixelFormat,
|
||||
0, 1, &attrib, &value))
|
||||
{
|
||||
// NOTE: We should probably handle this error somehow
|
||||
return 0;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Return a list of available and usable framebuffer configs
|
||||
//========================================================================
|
||||
|
||||
static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
|
||||
{
|
||||
_GLFWfbconfig* fbconfigs;
|
||||
PIXELFORMATDESCRIPTOR pfd;
|
||||
int i, available;
|
||||
|
||||
*found = 0;
|
||||
|
||||
if (window->WGL.ARB_pixel_format)
|
||||
{
|
||||
available = getPixelFormatAttrib(window,
|
||||
1,
|
||||
WGL_NUMBER_PIXEL_FORMATS_ARB);
|
||||
}
|
||||
else
|
||||
{
|
||||
available = DescribePixelFormat(window->WGL.DC,
|
||||
1,
|
||||
sizeof(PIXELFORMATDESCRIPTOR),
|
||||
NULL);
|
||||
}
|
||||
|
||||
if (!available)
|
||||
{
|
||||
_glfwSetError(GLFW_API_UNAVAILABLE, "WGL: No pixel formats found");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
fbconfigs = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * available);
|
||||
if (!fbconfigs)
|
||||
{
|
||||
_glfwSetError(GLFW_OUT_OF_MEMORY, NULL);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
for (i = 1; i <= available; i++)
|
||||
{
|
||||
_GLFWfbconfig* f = fbconfigs + *found;
|
||||
|
||||
if (window->WGL.ARB_pixel_format)
|
||||
{
|
||||
// Get pixel format attributes through WGL_ARB_pixel_format
|
||||
if (!getPixelFormatAttrib(window, i, WGL_SUPPORT_OPENGL_ARB) ||
|
||||
!getPixelFormatAttrib(window, i, WGL_DRAW_TO_WINDOW_ARB) ||
|
||||
!getPixelFormatAttrib(window, i, WGL_DOUBLE_BUFFER_ARB))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (getPixelFormatAttrib(window, i, WGL_PIXEL_TYPE_ARB) !=
|
||||
WGL_TYPE_RGBA_ARB)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (getPixelFormatAttrib(window, i, WGL_ACCELERATION_ARB) ==
|
||||
WGL_NO_ACCELERATION_ARB)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
f->redBits = getPixelFormatAttrib(window, i, WGL_RED_BITS_ARB);
|
||||
f->greenBits = getPixelFormatAttrib(window, i, WGL_GREEN_BITS_ARB);
|
||||
f->blueBits = getPixelFormatAttrib(window, i, WGL_BLUE_BITS_ARB);
|
||||
f->alphaBits = getPixelFormatAttrib(window, i, WGL_ALPHA_BITS_ARB);
|
||||
|
||||
f->depthBits = getPixelFormatAttrib(window, i, WGL_DEPTH_BITS_ARB);
|
||||
f->stencilBits = getPixelFormatAttrib(window, i, WGL_STENCIL_BITS_ARB);
|
||||
|
||||
f->accumRedBits = getPixelFormatAttrib(window, i, WGL_ACCUM_RED_BITS_ARB);
|
||||
f->accumGreenBits = getPixelFormatAttrib(window, i, WGL_ACCUM_GREEN_BITS_ARB);
|
||||
f->accumBlueBits = getPixelFormatAttrib(window, i, WGL_ACCUM_BLUE_BITS_ARB);
|
||||
f->accumAlphaBits = getPixelFormatAttrib(window, i, WGL_ACCUM_ALPHA_BITS_ARB);
|
||||
|
||||
f->auxBuffers = getPixelFormatAttrib(window, i, WGL_AUX_BUFFERS_ARB);
|
||||
f->stereo = getPixelFormatAttrib(window, i, WGL_STEREO_ARB);
|
||||
|
||||
if (window->WGL.ARB_multisample)
|
||||
f->samples = getPixelFormatAttrib(window, i, WGL_SAMPLES_ARB);
|
||||
else
|
||||
f->samples = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
// Get pixel format attributes through old-fashioned PFDs
|
||||
|
||||
if (!DescribePixelFormat(window->WGL.DC,
|
||||
i,
|
||||
sizeof(PIXELFORMATDESCRIPTOR),
|
||||
&pfd))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!(pfd.dwFlags & PFD_DRAW_TO_WINDOW) ||
|
||||
!(pfd.dwFlags & PFD_SUPPORT_OPENGL) ||
|
||||
!(pfd.dwFlags & PFD_DOUBLEBUFFER))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!(pfd.dwFlags & PFD_GENERIC_ACCELERATED) &&
|
||||
(pfd.dwFlags & PFD_GENERIC_FORMAT))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (pfd.iPixelType != PFD_TYPE_RGBA)
|
||||
continue;
|
||||
|
||||
f->redBits = pfd.cRedBits;
|
||||
f->greenBits = pfd.cGreenBits;
|
||||
f->blueBits = pfd.cBlueBits;
|
||||
f->alphaBits = pfd.cAlphaBits;
|
||||
|
||||
f->depthBits = pfd.cDepthBits;
|
||||
f->stencilBits = pfd.cStencilBits;
|
||||
|
||||
f->accumRedBits = pfd.cAccumRedBits;
|
||||
f->accumGreenBits = pfd.cAccumGreenBits;
|
||||
f->accumBlueBits = pfd.cAccumBlueBits;
|
||||
f->accumAlphaBits = pfd.cAccumAlphaBits;
|
||||
|
||||
f->auxBuffers = pfd.cAuxBuffers;
|
||||
f->stereo = (pfd.dwFlags & PFD_STEREO) ? GL_TRUE : GL_FALSE;
|
||||
|
||||
// PFD pixel formats do not support FSAA
|
||||
f->samples = 0;
|
||||
}
|
||||
|
||||
f->platformID = i;
|
||||
|
||||
(*found)++;
|
||||
}
|
||||
|
||||
if (*found == 0)
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"Win32/WGL: No usable pixel formats found");
|
||||
|
||||
free(fbconfigs);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return fbconfigs;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Creates an OpenGL context on the specified device context
|
||||
//========================================================================
|
||||
|
||||
static GLboolean createContext(_GLFWwindow* window,
|
||||
const _GLFWwndconfig* wndconfig,
|
||||
int pixelFormat)
|
||||
{
|
||||
PIXELFORMATDESCRIPTOR pfd;
|
||||
int i = 0, attribs[40];
|
||||
HGLRC share = NULL;
|
||||
|
||||
if (wndconfig->share)
|
||||
share = wndconfig->share->WGL.context;
|
||||
|
||||
if (!DescribePixelFormat(window->WGL.DC, pixelFormat, sizeof(pfd), &pfd))
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"Win32: Failed to retrieve PFD for selected pixel format");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (!SetPixelFormat(window->WGL.DC, pixelFormat, &pfd))
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"Win32: Failed to set selected pixel format");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (window->WGL.ARB_create_context)
|
||||
{
|
||||
// Use the newer wglCreateContextAttribsARB creation method
|
||||
|
||||
if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
|
||||
{
|
||||
// Request an explicitly versioned context
|
||||
|
||||
attribs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
|
||||
attribs[i++] = wndconfig->glMajor;
|
||||
attribs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
|
||||
attribs[i++] = wndconfig->glMinor;
|
||||
}
|
||||
|
||||
if (wndconfig->clientAPI == GLFW_OPENGL_ES_API)
|
||||
{
|
||||
if (!window->WGL.ARB_create_context_profile ||
|
||||
!window->WGL.EXT_create_context_es2_profile)
|
||||
{
|
||||
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
||||
"Win32/WGL: OpenGL ES 2.x requested but "
|
||||
"WGL_EXT_create_context_es2_profile is unavailable");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
attribs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
|
||||
attribs[i++] = WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
|
||||
}
|
||||
|
||||
if (wndconfig->glForward || wndconfig->glDebug || wndconfig->glRobustness)
|
||||
{
|
||||
int flags = 0;
|
||||
|
||||
if (wndconfig->glForward)
|
||||
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
|
||||
|
||||
if (wndconfig->glDebug)
|
||||
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
|
||||
|
||||
if (wndconfig->glRobustness)
|
||||
flags |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;
|
||||
|
||||
attribs[i++] = WGL_CONTEXT_FLAGS_ARB;
|
||||
attribs[i++] = flags;
|
||||
}
|
||||
|
||||
if (wndconfig->glProfile)
|
||||
{
|
||||
int flags = 0;
|
||||
|
||||
if (!window->WGL.ARB_create_context_profile)
|
||||
{
|
||||
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
||||
"WGL: OpenGL profile requested but "
|
||||
"WGL_ARB_create_context_profile is unavailable");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
|
||||
flags = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
|
||||
else if (wndconfig->glProfile == GLFW_OPENGL_COMPAT_PROFILE)
|
||||
flags = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
|
||||
|
||||
attribs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
|
||||
attribs[i++] = flags;
|
||||
}
|
||||
|
||||
if (wndconfig->glRobustness)
|
||||
{
|
||||
int strategy = 0;
|
||||
|
||||
if (!window->WGL.ARB_create_context_robustness)
|
||||
{
|
||||
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
||||
"WGL: An OpenGL robustness strategy was "
|
||||
"requested but WGL_ARB_create_context_robustness "
|
||||
"is unavailable");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (wndconfig->glRobustness == GLFW_OPENGL_NO_RESET_NOTIFICATION)
|
||||
strategy = WGL_NO_RESET_NOTIFICATION_ARB;
|
||||
else if (wndconfig->glRobustness == GLFW_OPENGL_LOSE_CONTEXT_ON_RESET)
|
||||
strategy = WGL_LOSE_CONTEXT_ON_RESET_ARB;
|
||||
|
||||
attribs[i++] = WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB;
|
||||
attribs[i++] = strategy;
|
||||
}
|
||||
|
||||
attribs[i++] = 0;
|
||||
|
||||
window->WGL.context = window->WGL.CreateContextAttribsARB(window->WGL.DC,
|
||||
share,
|
||||
attribs);
|
||||
if (!window->WGL.context)
|
||||
{
|
||||
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
|
||||
"WGL: Failed to create OpenGL context");
|
||||
return GL_FALSE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
window->WGL.context = wglCreateContext(window->WGL.DC);
|
||||
if (!window->WGL.context)
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"WGL: Failed to create OpenGL context");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
if (share)
|
||||
{
|
||||
if (!wglShareLists(share, window->WGL.context))
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"WGL: Failed to enable sharing with specified "
|
||||
"OpenGL context");
|
||||
return GL_FALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
_glfwPlatformMakeContextCurrent(window);
|
||||
initWGLExtensions(window);
|
||||
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
////// GLFW internal API //////
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
|
||||
//========================================================================
|
||||
// Prepare for creation of the OpenGL context
|
||||
//========================================================================
|
||||
|
||||
int _glfwCreateContext(_GLFWwindow* window,
|
||||
const _GLFWwndconfig* wndconfig,
|
||||
const _GLFWfbconfig* fbconfig)
|
||||
{
|
||||
_GLFWfbconfig closest;
|
||||
|
||||
window->WGL.DC = GetDC(window->Win32.handle);
|
||||
if (!window->WGL.DC)
|
||||
{
|
||||
_glfwSetError(GLFW_PLATFORM_ERROR,
|
||||
"Win32: Failed to retrieve DC for window");
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
// Choose the best available fbconfig
|
||||
{
|
||||
unsigned int fbcount;
|
||||
_GLFWfbconfig* fbconfigs;
|
||||
const _GLFWfbconfig* result;
|
||||
|
||||
fbconfigs = getFBConfigs(window, &fbcount);
|
||||
if (!fbconfigs)
|
||||
return GL_FALSE;
|
||||
|
||||
result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
|
||||
if (!result)
|
||||
{
|
||||
_glfwSetError(GLFW_FORMAT_UNAVAILABLE,
|
||||
"Win32/WGL: No pixel format matched the criteria");
|
||||
|
||||
free(fbconfigs);
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
closest = *result;
|
||||
free(fbconfigs);
|
||||
}
|
||||
|
||||
return createContext(window, wndconfig, (int) closest.platformID);
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Destroy the OpenGL context
|
||||
//========================================================================
|
||||
|
||||
void _glfwDestroyContext(_GLFWwindow* window)
|
||||
{
|
||||
if (window->WGL.context)
|
||||
{
|
||||
wglDeleteContext(window->WGL.context);
|
||||
window->WGL.context = NULL;
|
||||
}
|
||||
|
||||
if (window->WGL.DC)
|
||||
{
|
||||
ReleaseDC(window->Win32.handle, window->WGL.DC);
|
||||
window->WGL.DC = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
////// GLFW platform API //////
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
|
||||
//========================================================================
|
||||
// Make the OpenGL context associated with the specified window current
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformMakeContextCurrent(_GLFWwindow* window)
|
||||
{
|
||||
if (window)
|
||||
wglMakeCurrent(window->WGL.DC, window->WGL.context);
|
||||
else
|
||||
wglMakeCurrent(NULL, NULL);
|
||||
|
||||
_glfwCurrentWindow = window;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Return the window object whose context is current
|
||||
//========================================================================
|
||||
|
||||
_GLFWwindow* _glfwPlatformGetCurrentContext(void)
|
||||
{
|
||||
return _glfwCurrentWindow;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Swap buffers (double-buffering)
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformSwapBuffers(_GLFWwindow* window)
|
||||
{
|
||||
SwapBuffers(window->WGL.DC);
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Set double buffering swap interval
|
||||
//========================================================================
|
||||
|
||||
void _glfwPlatformSwapInterval(int interval)
|
||||
{
|
||||
_GLFWwindow* window = _glfwCurrentWindow;
|
||||
|
||||
if (window->WGL.EXT_swap_control)
|
||||
window->WGL.SwapIntervalEXT(interval);
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Check if the current context supports the specified WGL extension
|
||||
//========================================================================
|
||||
|
||||
int _glfwPlatformExtensionSupported(const char* extension)
|
||||
{
|
||||
const GLubyte* extensions;
|
||||
|
||||
_GLFWwindow* window = _glfwCurrentWindow;
|
||||
|
||||
if (window->WGL.GetExtensionsStringEXT != NULL)
|
||||
{
|
||||
extensions = (GLubyte*) window->WGL.GetExtensionsStringEXT();
|
||||
if (extensions != NULL)
|
||||
{
|
||||
if (_glfwStringInExtensionString(extension, extensions))
|
||||
return GL_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
if (window->WGL.GetExtensionsStringARB != NULL)
|
||||
{
|
||||
extensions = (GLubyte*) window->WGL.GetExtensionsStringARB(window->WGL.DC);
|
||||
if (extensions != NULL)
|
||||
{
|
||||
if (_glfwStringInExtensionString(extension, extensions))
|
||||
return GL_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Get the function pointer to an OpenGL function
|
||||
//========================================================================
|
||||
|
||||
GLFWglproc _glfwPlatformGetProcAddress(const char* procname)
|
||||
{
|
||||
return (GLFWglproc) wglGetProcAddress(procname);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user