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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_SRGB_CONVERTER_H_
#define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_SRGB_CONVERTER_H_
#include <array>
#include "gpu/command_buffer/service/feature_info.h"
#include "gpu/command_buffer/service/gl_utils.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
namespace gles2 {
class GLES2Decoder;
// This class encapsulates the resources required to implement the
// glBlitFramebuffer command, which somtimes requires to convert sRGB
// to linear (RGBA) color format, or vice versa.
class GPU_GLES2_EXPORT SRGBConverter {
public:
explicit SRGBConverter(const gles2::FeatureInfo* feature_info);
SRGBConverter(const SRGBConverter&) = delete;
SRGBConverter& operator=(const SRGBConverter&) = delete;
~SRGBConverter();
void InitializeSRGBConverter(const gles2::GLES2Decoder* decoder);
void Destroy();
void Blit(
const gles2::GLES2Decoder* decoder,
GLint srcX0,
GLint srcY0,
GLint srcX1,
GLint srcY1,
GLint dstX0,
GLint dstY0,
GLint dstX1,
GLint dstY1,
GLbitfield mask,
GLenum filter,
const gfx::Size& framebuffer_size,
GLuint src_framebuffer,
GLenum src_framebuffer_internal_format,
GLenum src_framebuffer_format,
GLenum src_framebuffer_type,
GLuint dst_framebuffer,
bool decode,
bool encode,
bool enable_scissor_test);
void GenerateMipmap(gles2::GLES2Decoder* decoder,
Texture* tex,
GLenum target);
private:
void InitializeSRGBConverterProgram();
scoped_refptr<const gles2::FeatureInfo> feature_info_;
bool srgb_converter_initialized_ = false;
GLuint srgb_converter_program_ = 0;
std::array<GLuint, 2> srgb_converter_textures_ = {{0, 0}};
GLuint srgb_decoder_fbo_ = 0;
GLuint srgb_encoder_fbo_ = 0;
GLuint srgb_converter_vao_ = 0;
};
} // namespace gles2.
} // namespace gpu.
#endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_SRGB_CONVERTER_H_
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