Separate image processing logic from presentation logic.

ui/surface/d3d9_utils_win.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/surface/d3d9_utils_win.h"
+
+#include "base/file_path.h"
+#include "base/scoped_native_library.h"
+#include "base/win/scoped_comptr.h"
+#include "ui/gfx/size.h"
+
+namespace {
+
+const wchar_t kD3D9ModuleName[] = L"d3d9.dll";
+const char kCreate3D9DeviceExName[] = "Direct3DCreate9Ex";
+typedef HRESULT (WINAPI *Direct3DCreate9ExFunc)(UINT sdk_version,
+                                                IDirect3D9Ex **d3d);
+}  // namespace
+
+namespace ui_surface_d3d9_utils {
+
+bool LoadD3D9(base::ScopedNativeLibrary* storage) {
+  storage->Reset(base::LoadNativeLibrary(FilePath(kD3D9ModuleName), NULL));
+  return storage->is_valid();
+}
+
+bool CreateDevice(const base::ScopedNativeLibrary& d3d_module,
+                  D3DDEVTYPE device_type,
+                  uint32 presentation_interval,
+                  IDirect3DDevice9Ex** device) {
+
+  Direct3DCreate9ExFunc create_func = reinterpret_cast<Direct3DCreate9ExFunc>(
+      d3d_module.GetFunctionPointer(kCreate3D9DeviceExName));
+  if (!create_func)
+    return false;
+
+  base::win::ScopedComPtr<IDirect3D9Ex> d3d;
+  HRESULT hr = create_func(D3D_SDK_VERSION, d3d.Receive());
+  if (FAILED(hr))
+    return false;
+
+  // Any old window will do to create the device. In practice the window to
+  // present to is an argument to IDirect3DDevice9::Present.
+  HWND window = GetShellWindow();
+
+  D3DPRESENT_PARAMETERS parameters = { 0 };
+  parameters.BackBufferWidth = 1;
+  parameters.BackBufferHeight = 1;
+  parameters.BackBufferCount = 1;
+  parameters.BackBufferFormat = D3DFMT_A8R8G8B8;
+  parameters.hDeviceWindow = window;
+  parameters.Windowed = TRUE;
+  parameters.Flags = 0;
+  parameters.PresentationInterval = presentation_interval;
+  parameters.SwapEffect = D3DSWAPEFFECT_COPY;
+
+  hr = d3d->CreateDeviceEx(
+      D3DADAPTER_DEFAULT,
+      device_type,
+      window,
+      D3DCREATE_FPU_PRESERVE | D3DCREATE_SOFTWARE_VERTEXPROCESSING |
+          D3DCREATE_DISABLE_PSGP_THREADING | D3DCREATE_MULTITHREADED,
+      &parameters,
+      NULL,
+      device);
+  return SUCCEEDED(hr);
+}
+
+bool OpenSharedTexture(IDirect3DDevice9* device,
+                       int64 surface_handle,
+                       const gfx::Size& size,
+                       IDirect3DTexture9** opened_texture) {
+  HANDLE handle = reinterpret_cast<HANDLE>(surface_handle);
+  HRESULT hr = device->CreateTexture(size.width(),
+                                     size.height(),
+                                     1,
+                                     D3DUSAGE_RENDERTARGET,
+                                     D3DFMT_A8R8G8B8,
+                                     D3DPOOL_DEFAULT,
+                                     opened_texture,
+                                     &handle);
+  return SUCCEEDED(hr);
+}
+
+bool CreateTemporaryLockableSurface(IDirect3DDevice9* device,
+                                    const gfx::Size& size,
+                                    IDirect3DSurface9** surface) {
+  HRESULT hr = device->CreateRenderTarget(
+        size.width(),
+        size.height(),
+        D3DFMT_A8R8G8B8,
+        D3DMULTISAMPLE_NONE,
+        0,
+        TRUE,
+        surface,
+        NULL);
+  return SUCCEEDED(hr);
+}
+
+bool CreateTemporaryRenderTargetTexture(IDirect3DDevice9* device,
+                                        const gfx::Size& size,
+                                        IDirect3DTexture9** texture,
+                                        IDirect3DSurface9** render_target) {
+  HRESULT hr = device->CreateTexture(
+        size.width(),
+        size.height(),
+        1,  // Levels
+        D3DUSAGE_RENDERTARGET,
+        D3DFMT_A8R8G8B8,
+        D3DPOOL_DEFAULT,
+        texture,
+        NULL);
+  if (!SUCCEEDED(hr))
+    return false;
+  hr = (*texture)->GetSurfaceLevel(0, render_target);
+  return SUCCEEDED(hr);
+}
+
+}  // namespace ui_surface_d3d9_utils