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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 GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_
#define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_
#include "gpu/command_buffer/service/gl_utils.h"
#include "gpu/gpu_export.h"
namespace gpu {
namespace gles2 {
class GLES2Decoder;
} // namespace gles2.
// This class encapsulates the resources required to implement the
// GL_CHROMIUM_copy_texture extension. The copy operation is performed
// via a blit to a framebuffer object.
class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
public:
CopyTextureCHROMIUMResourceManager();
void Initialize(const gles2::GLES2Decoder* decoder);
void Destroy();
void DoCopyTexture(const gles2::GLES2Decoder* decoder, GLenum source_target,
GLenum dest_target, GLuint source_id, GLuint dest_id,
GLint level, GLsizei width, GLsizei height,
bool flip_y, bool premultiply_alpha,
bool unpremultiply_alpha);
// This will apply a transform on the source texture before copying to
// destination texture.
void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder,
GLenum source_target, GLenum dest_target,
GLuint source_id, GLuint dest_id, GLint level,
GLsizei width, GLsizei height, bool flip_y,
bool premultiply_alpha,
bool unpremultiply_alpha,
const GLfloat transform_matrix[16]);
// The attributes used during invocation of the extension.
static const GLuint kVertexPositionAttrib = 0;
private:
bool initialized_;
static const int kNumPrograms = 12;
GLuint programs_[kNumPrograms];
GLuint buffer_id_;
GLuint framebuffer_;
GLuint matrix_handle_[kNumPrograms];
GLuint sampler_locations_[kNumPrograms];
DISALLOW_COPY_AND_ASSIGN(CopyTextureCHROMIUMResourceManager);
};
} // namespace gpu.
#endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_
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