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//
// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// FunctionsWGL.h: Implements the FuntionsWGL class.
#include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
#include <algorithm>
#include "common/string_utils.h"
namespace rx
{
template <typename T>
static void GetWGLProcAddress(HMODULE glModule, PFNWGLGETPROCADDRESSPROC getProcAddressWGL,
const std::string &procName, T *outProcAddress)
{
T proc = nullptr;
if (getProcAddressWGL)
{
proc = reinterpret_cast<T>(getProcAddressWGL(procName.c_str()));
}
if (!proc)
{
proc = reinterpret_cast<T>(GetProcAddress(glModule, procName.c_str()));
}
*outProcAddress = proc;
}
template <typename T>
static void GetWGLExtensionProcAddress(HMODULE glModule,
PFNWGLGETPROCADDRESSPROC getProcAddressWGL,
const std::vector<std::string> &extensions,
const std::string &extensionName,
const std::string &procName,
T *outProcAddress)
{
T proc = nullptr;
if (std::find(extensions.begin(), extensions.end(), extensionName) != extensions.end())
{
GetWGLProcAddress(glModule, getProcAddressWGL, procName, &proc);
}
*outProcAddress = proc;
}
FunctionsWGL::FunctionsWGL()
: copyContext(nullptr),
createContext(nullptr),
createLayerContext(nullptr),
deleteContext(nullptr),
getCurrentContext(nullptr),
getCurrentDC(nullptr),
getProcAddress(nullptr),
makeCurrent(nullptr),
shareLists(nullptr),
useFontBitmapsA(nullptr),
useFontBitmapsW(nullptr),
swapBuffers(nullptr),
useFontOutlinesA(nullptr),
useFontOutlinesW(nullptr),
describeLayerPlane(nullptr),
setLayerPaletteEntries(nullptr),
getLayerPaletteEntries(nullptr),
realizeLayerPalette(nullptr),
swapLayerBuffers(nullptr),
swapMultipleBuffers(nullptr),
getExtensionStringEXT(nullptr),
getExtensionStringARB(nullptr),
createContextAttribsARB(nullptr),
getPixelFormatAttribivARB(nullptr),
getPixelFormatAttribfvARB(nullptr),
choosePixelFormatARB(nullptr),
swapIntervalEXT(nullptr),
createPbufferARB(nullptr),
getPbufferDCARB(nullptr),
releasePbufferDCARB(nullptr),
destroyPbufferARB(nullptr),
queryPbufferARB(nullptr),
bindTexImageARB(nullptr),
releaseTexImageARB(nullptr),
setPbufferAttribARB(nullptr),
dxSetResourceShareHandleNV(nullptr),
dxOpenDeviceNV(nullptr),
dxCloseDeviceNV(nullptr),
dxRegisterObjectNV(nullptr),
dxUnregisterObjectNV(nullptr),
dxObjectAccessNV(nullptr),
dxLockObjectsNV(nullptr),
dxUnlockObjectsNV(nullptr)
{
}
void FunctionsWGL::initialize(HMODULE glModule, HDC context)
{
// First grab the wglGetProcAddress function from the gl module
GetWGLProcAddress(glModule, nullptr, "wglGetProcAddress", &getProcAddress);
// Load the core wgl functions
GetWGLProcAddress(glModule, getProcAddress, "wglCopyContext", ©Context);
GetWGLProcAddress(glModule, getProcAddress, "wglCreateContext", &createContext);
GetWGLProcAddress(glModule, getProcAddress, "wglCreateLayerContext", &createLayerContext);
GetWGLProcAddress(glModule, getProcAddress, "wglDeleteContext", &deleteContext);
GetWGLProcAddress(glModule, getProcAddress, "wglGetCurrentContext", &getCurrentContext);
GetWGLProcAddress(glModule, getProcAddress, "wglGetCurrentDC", &getCurrentDC);
GetWGLProcAddress(glModule, getProcAddress, "wglMakeCurrent", &makeCurrent);
GetWGLProcAddress(glModule, getProcAddress, "wglShareLists", &shareLists);
GetWGLProcAddress(glModule, getProcAddress, "wglUseFontBitmapsA", &useFontBitmapsA);
GetWGLProcAddress(glModule, getProcAddress, "wglUseFontBitmapsW", &useFontBitmapsW);
swapBuffers = SwapBuffers; // SwapBuffers is statically linked from GDI
GetWGLProcAddress(glModule, getProcAddress, "wglUseFontOutlinesA", &useFontOutlinesA);
GetWGLProcAddress(glModule, getProcAddress, "wglUseFontOutlinesW", &useFontOutlinesW);
GetWGLProcAddress(glModule, getProcAddress, "wglDescribeLayerPlane", &describeLayerPlane);
GetWGLProcAddress(glModule, getProcAddress, "wglSetLayerPaletteEntries", &setLayerPaletteEntries);
GetWGLProcAddress(glModule, getProcAddress, "wglGetLayerPaletteEntries", &getLayerPaletteEntries);
GetWGLProcAddress(glModule, getProcAddress, "wglRealizeLayerPalette", &realizeLayerPalette);
GetWGLProcAddress(glModule, getProcAddress, "wglSwapLayerBuffers", &swapLayerBuffers);
GetWGLProcAddress(glModule, getProcAddress, "wglSwapMultipleBuffers", &swapMultipleBuffers);
// Load extension string getter functions
GetWGLProcAddress(glModule, getProcAddress, "wglGetExtensionsStringEXT", &getExtensionStringEXT);
GetWGLProcAddress(glModule, getProcAddress, "wglGetExtensionsStringARB", &getExtensionStringARB);
std::string extensionString = "";
if (getExtensionStringEXT)
{
extensionString = getExtensionStringEXT();
}
else if (getExtensionStringARB && context)
{
extensionString = getExtensionStringARB(context);
}
angle::SplitStringAlongWhitespace(extensionString, &extensions);
// Load the wgl extension functions by checking if the context supports the extension first
// WGL_ARB_create_context
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_create_context", "wglCreateContextAttribsARB", &createContextAttribsARB);
// WGL_ARB_pixel_format
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pixel_format", "wglGetPixelFormatAttribivARB", &getPixelFormatAttribivARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pixel_format", "wglGetPixelFormatAttribfvARB", &getPixelFormatAttribfvARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pixel_format", "wglChoosePixelFormatARB", &choosePixelFormatARB);
// WGL_EXT_swap_control
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_EXT_swap_control", "wglSwapIntervalEXT", &swapIntervalEXT);
// WGL_ARB_pbuffer
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pbuffer", "wglCreatePbufferARB", &createPbufferARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pbuffer", "wglGetPbufferDCARB", &getPbufferDCARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pbuffer", "wglReleasePbufferDCARB", &releasePbufferDCARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pbuffer", "wglDestroyPbufferARB", &destroyPbufferARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_pbuffer", "wglQueryPbufferARB", &queryPbufferARB);
// WGL_ARB_render_texture
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_render_texture", "wglBindTexImageARB", &bindTexImageARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_render_texture", "wglReleaseTexImageARB", &releaseTexImageARB);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_ARB_render_texture", "wglSetPbufferAttribARB", &setPbufferAttribARB);
// WGL_NV_DX_interop
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXSetResourceShareHandleNV", &dxSetResourceShareHandleNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXOpenDeviceNV", &dxOpenDeviceNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXCloseDeviceNV", &dxCloseDeviceNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXRegisterObjectNV", &dxRegisterObjectNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXUnregisterObjectNV", &dxUnregisterObjectNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXObjectAccessNV", &dxObjectAccessNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXLockObjectsNV", &dxLockObjectsNV);
GetWGLExtensionProcAddress(glModule, getProcAddress, extensions, "WGL_NV_DX_interop", "wglDXUnlockObjectsNV", &dxUnlockObjectsNV);
}
bool FunctionsWGL::hasExtension(const std::string &ext) const
{
return std::find(extensions.begin(), extensions.end(), ext) != extensions.end();
}
}
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