1 files changed, 181 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/FunctionsWGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/wgl/FunctionsWGL.cpp
new file mode 100755
index 000000000..2cfe6e9eb
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/FunctionsWGL.cpp
@@ -0,0 +1,181 @@
+//
+// 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", &copyContext);
+    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();
+}
+}