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// Copyright 2016 The Chromium Authors
// 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_TEX_IMAGE_H_
#define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEX_IMAGE_H_
#include <array>
#include "gpu/command_buffer/service/feature_info.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
class DecoderContext;
namespace gles2 {
// This class encapsulates the resources required to implement the
// glCopyTexImage and glCopyTexSubImage commands. These commands somtimes
// require a blit.
class GPU_GLES2_EXPORT CopyTexImageResourceManager {
public:
explicit CopyTexImageResourceManager(const gles2::FeatureInfo* feature_info);
CopyTexImageResourceManager(const CopyTexImageResourceManager&) = delete;
CopyTexImageResourceManager& operator=(const CopyTexImageResourceManager&) =
delete;
virtual ~CopyTexImageResourceManager();
virtual void Initialize(const DecoderContext* decoder);
virtual void Destroy();
virtual void DoCopyTexImage2DToLUMACompatibilityTexture(
const DecoderContext* decoder,
GLuint dest_texture,
GLenum dest_texture_target,
GLenum dest_target,
GLenum luma_format,
GLenum luma_type,
GLint level,
GLenum internal_format,
GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLuint source_framebuffer,
GLenum source_framebuffer_internal_format);
virtual void DoCopyTexSubImageToLUMACompatibilityTexture(
const DecoderContext* decoder,
GLuint dest_texture,
GLenum dest_texture_target,
GLenum dest_target,
GLenum luma_format,
GLenum luma_type,
GLint level,
GLint xoffset,
GLint yoffset,
GLint zoffset,
GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLuint source_framebuffer,
GLenum source_framebuffer_internal_format);
static bool CopyTexImageRequiresBlit(const gles2::FeatureInfo* feature_info,
GLenum dest_texture_format);
private:
scoped_refptr<const gles2::FeatureInfo> feature_info_;
bool initialized_ = false;
GLuint blit_program_ = 0;
std::array<GLuint, 2> scratch_textures_ = {{0, 0}};
GLuint scratch_fbo_ = 0;
GLuint vao_ = 0;
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEX_IMAGE_H_
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