1 files changed, 178 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/WindowSurfaceWGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/wgl/WindowSurfaceWGL.cpp
new file mode 100755
index 000000000..f22943acb
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/WindowSurfaceWGL.cpp
@@ -0,0 +1,178 @@
+//
+// 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.
+//
+
+// WindowSurfaceWGL.cpp: WGL implementation of egl::Surface for windows
+
+#include "libANGLE/renderer/gl/wgl/WindowSurfaceWGL.h"
+
+#include "common/debug.h"
+#include "libANGLE/renderer/gl/RendererGL.h"
+#include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
+#include "libANGLE/renderer/gl/wgl/wgl_utils.h"
+
+namespace rx
+{
+
+WindowSurfaceWGL::WindowSurfaceWGL(const egl::SurfaceState &state,
+                                   RendererGL *renderer,
+                                   EGLNativeWindowType window,
+                                   int pixelFormat,
+                                   HGLRC wglContext,
+                                   const FunctionsWGL *functions,
+                                   EGLint orientation)
+    : SurfaceGL(state, renderer),
+      mPixelFormat(pixelFormat),
+      mWGLContext(wglContext),
+      mWindow(window),
+      mDeviceContext(nullptr),
+      mFunctionsWGL(functions),
+      mSwapBehavior(0)
+{
+    // EGL_ANGLE_surface_orientation is not supported for regular WGL window surfaces
+    ASSERT(orientation == 0);
+}
+
+WindowSurfaceWGL::~WindowSurfaceWGL()
+{
+    ReleaseDC(mWindow, mDeviceContext);
+    mDeviceContext = nullptr;
+}
+
+egl::Error WindowSurfaceWGL::initialize()
+{
+    mDeviceContext = GetDC(mWindow);
+    if (!mDeviceContext)
+    {
+        return egl::Error(EGL_BAD_NATIVE_WINDOW, "Failed to get the device context from the native window, "
+                                                 "error: 0x%X.", GetLastError());
+    }
+
+    // Require that the pixel format for this window has not been set yet or is equal to the Display's pixel format.
+    int windowPixelFormat = GetPixelFormat(mDeviceContext);
+    if (windowPixelFormat == 0)
+    {
+        PIXELFORMATDESCRIPTOR pixelFormatDescriptor = { 0 };
+        if (!DescribePixelFormat(mDeviceContext, mPixelFormat, sizeof(pixelFormatDescriptor), &pixelFormatDescriptor))
+        {
+            return egl::Error(EGL_BAD_NATIVE_WINDOW, "Failed to DescribePixelFormat, error: 0x%X.", GetLastError());
+        }
+
+        if (!SetPixelFormat(mDeviceContext, mPixelFormat, &pixelFormatDescriptor))
+        {
+            return egl::Error(EGL_NOT_INITIALIZED, "Failed to set the pixel format on the device context, "
+                                                   "error: 0x%X.", GetLastError());
+        }
+    }
+    else if (windowPixelFormat != mPixelFormat)
+    {
+        return egl::Error(EGL_NOT_INITIALIZED, "Pixel format of the NativeWindow and NativeDisplayType must match.");
+    }
+
+    // Check for the swap behavior of this pixel format
+    switch (
+        wgl::QueryWGLFormatAttrib(mDeviceContext, mPixelFormat, WGL_SWAP_METHOD_ARB, mFunctionsWGL))
+    {
+        case WGL_SWAP_COPY_ARB:
+            mSwapBehavior = EGL_BUFFER_PRESERVED;
+            break;
+
+        case WGL_SWAP_EXCHANGE_ARB:
+        case WGL_SWAP_UNDEFINED_ARB:
+        default:
+            mSwapBehavior = EGL_BUFFER_DESTROYED;
+            break;
+    }
+
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::makeCurrent()
+{
+    if (!mFunctionsWGL->makeCurrent(mDeviceContext, mWGLContext))
+    {
+        // TODO: What error type here?
+        return egl::Error(EGL_CONTEXT_LOST, "Failed to make the WGL context current.");
+    }
+
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::swap()
+{
+    if (!mFunctionsWGL->swapBuffers(mDeviceContext))
+    {
+        // TODO: What error type here?
+        return egl::Error(EGL_CONTEXT_LOST, "Failed to swap buffers on the child window.");
+    }
+
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::querySurfacePointerANGLE(EGLint attribute, void **value)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::bindTexImage(gl::Texture *texture, EGLint buffer)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error WindowSurfaceWGL::releaseTexImage(EGLint buffer)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+void WindowSurfaceWGL::setSwapInterval(EGLint interval)
+{
+    if (mFunctionsWGL->swapIntervalEXT)
+    {
+        mFunctionsWGL->swapIntervalEXT(interval);
+    }
+}
+
+EGLint WindowSurfaceWGL::getWidth() const
+{
+    RECT rect;
+    if (!GetClientRect(mWindow, &rect))
+    {
+        return 0;
+    }
+    return rect.right - rect.left;
+}
+
+EGLint WindowSurfaceWGL::getHeight() const
+{
+    RECT rect;
+    if (!GetClientRect(mWindow, &rect))
+    {
+        return 0;
+    }
+    return rect.bottom - rect.top;
+}
+
+EGLint WindowSurfaceWGL::isPostSubBufferSupported() const
+{
+    // PostSubBuffer extension not exposed on WGL.
+    UNIMPLEMENTED();
+    return EGL_FALSE;
+}
+
+EGLint WindowSurfaceWGL::getSwapBehavior() const
+{
+    return mSwapBehavior;
+}
+
+}