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// 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.
#ifndef UI_SURFACE_ACCELERATED_SURFACE_TRANSFORMER_WIN_H_
#define UI_SURFACE_ACCELERATED_SURFACE_TRANSFORMER_WIN_H_
#include <d3d9.h>
#include "base/memory/ref_counted.h"
#include "base/single_thread_task_runner.h"
#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/win/scoped_comptr.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/size.h"
#include "ui/surface/surface_export.h"
namespace gfx {
class Size;
class Rect;
} // namespace gfx
// Provides useful image filtering operations that are implemented
// efficiently on DirectX9-class hardware using fragment programs.
class SURFACE_EXPORT AcceleratedSurfaceTransformer {
public:
// Constructs an uninitialized surface transformer. Call Init() before
// using the resulting object.
AcceleratedSurfaceTransformer();
// Init() initializes the transformer to operate on a device. This must be
// called before any other method of this class, and it must be called
// again after ReleaseAll() or DetachAll() before the class is used.
//
// Returns true if successful.
bool Init(IDirect3DDevice9* device);
// ReleaseAll() releases all direct3d resource references.
void ReleaseAll();
// DetachAll() leaks all direct3d resource references. This exists in order to
// work around particular driver bugs, and should only be called at shutdown.
// TODO(ncarter): Update the leak expectations before checkin.
void DetachAll();
// Draw a textured quad to a surface, flipping orientation in the y direction.
bool CopyInverted(
IDirect3DTexture9* src_texture,
IDirect3DSurface9* dst_surface,
const gfx::Size& dst_size);
// Resize a surface using repeated bilinear interpolation.
bool ResizeBilinear(
IDirect3DSurface9* src_surface,
const gfx::Rect& src_subrect,
IDirect3DSurface9* dst_surface);
private:
enum ShaderCombo {
SIMPLE_TEXTURE,
NUM_SHADERS
};
// Set the active vertex and pixel shader combination.
bool SetShaderCombo(ShaderCombo combo);
// Intitializes a vertex and pixel shader combination from compiled bytecode.
bool InitShaderCombo(const BYTE vertex_shader_instructions[],
const BYTE pixel_shader_instructions[],
ShaderCombo shader_combo_name);
IDirect3DDevice9* device();
base::win::ScopedComPtr<IDirect3DDevice9> device_;
base::win::ScopedComPtr<IDirect3DVertexShader9> vertex_shaders_[NUM_SHADERS];
base::win::ScopedComPtr<IDirect3DPixelShader9> pixel_shaders_[NUM_SHADERS];
DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceTransformer);
};
#endif // UI_SURFACE_ACCELERATED_SURFACE_TRANSFORMER_WIN_H_
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