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//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// TextureGL.h: Defines the class interface for TextureGL.
#ifndef LIBANGLE_RENDERER_GL_TEXTUREGL_H_
#define LIBANGLE_RENDERER_GL_TEXTUREGL_H_
#include "libANGLE/angletypes.h"
#include "libANGLE/renderer/TextureImpl.h"
#include "libANGLE/Texture.h"
namespace rx
{
class BlitGL;
class FunctionsGL;
class StateManagerGL;
struct WorkaroundsGL;
struct LUMAWorkaroundGL
{
bool enabled;
GLenum workaroundFormat;
LUMAWorkaroundGL();
LUMAWorkaroundGL(bool enabled, GLenum workaroundFormat);
};
// Structure containing information about format and workarounds for each mip level of the
// TextureGL.
struct LevelInfoGL
{
// Format of the data used in this mip level.
GLenum sourceFormat;
// If this mip level requires sampler-state re-writing so that only a red channel is exposed.
bool depthStencilWorkaround;
// Information about luminance alpha texture workarounds in the core profile.
LUMAWorkaroundGL lumaWorkaround;
LevelInfoGL();
LevelInfoGL(GLenum sourceFormat,
bool depthStencilWorkaround,
const LUMAWorkaroundGL &lumaWorkaround);
};
class TextureGL : public TextureImpl
{
public:
TextureGL(const gl::TextureState &state,
const FunctionsGL *functions,
const WorkaroundsGL &workarounds,
StateManagerGL *stateManager,
BlitGL *blitter);
~TextureGL() override;
gl::Error setImage(GLenum target, size_t level, GLenum internalFormat, const gl::Extents &size, GLenum format, GLenum type,
const gl::PixelUnpackState &unpack, const uint8_t *pixels) override;
gl::Error setSubImage(GLenum target, size_t level, const gl::Box &area, GLenum format, GLenum type,
const gl::PixelUnpackState &unpack, const uint8_t *pixels) override;
gl::Error setCompressedImage(GLenum target, size_t level, GLenum internalFormat, const gl::Extents &size,
const gl::PixelUnpackState &unpack, size_t imageSize, const uint8_t *pixels) override;
gl::Error setCompressedSubImage(GLenum target, size_t level, const gl::Box &area, GLenum format,
const gl::PixelUnpackState &unpack, size_t imageSize, const uint8_t *pixels) override;
gl::Error copyImage(GLenum target, size_t level, const gl::Rectangle &sourceArea, GLenum internalFormat,
const gl::Framebuffer *source) override;
gl::Error copySubImage(GLenum target, size_t level, const gl::Offset &destOffset, const gl::Rectangle &sourceArea,
const gl::Framebuffer *source) override;
gl::Error setStorage(GLenum target, size_t levels, GLenum internalFormat, const gl::Extents &size) override;
gl::Error setImageExternal(GLenum target,
egl::Stream *stream,
const egl::Stream::GLTextureDescription &desc) override;
gl::Error generateMipmap() override;
void bindTexImage(egl::Surface *surface) override;
void releaseTexImage() override;
gl::Error setEGLImageTarget(GLenum target, egl::Image *image) override;
void syncState(size_t textureUnit) const;
GLuint getTextureID() const;
gl::Error getAttachmentRenderTarget(const gl::FramebufferAttachment::Target &target,
FramebufferAttachmentRenderTarget **rtOut) override
{
return gl::Error(GL_OUT_OF_MEMORY, "Not supported on OpenGL");
}
void setBaseLevel(GLuint) override {}
private:
void setImageHelper(GLenum target,
size_t level,
GLenum internalFormat,
const gl::Extents &size,
GLenum format,
GLenum type,
const uint8_t *pixels);
void reserveTexImageToBeFilled(GLenum target,
size_t level,
GLenum internalFormat,
const gl::Extents &size,
GLenum format,
GLenum type);
gl::Error setSubImageRowByRowWorkaround(GLenum target,
size_t level,
const gl::Box &area,
GLenum format,
GLenum type,
const gl::PixelUnpackState &unpack,
const uint8_t *pixels);
const FunctionsGL *mFunctions;
const WorkaroundsGL &mWorkarounds;
StateManagerGL *mStateManager;
BlitGL *mBlitter;
std::vector<LevelInfoGL> mLevelInfo;
mutable gl::TextureState mAppliedTextureState;
GLuint mTextureID;
};
}
#endif // LIBANGLE_RENDERER_GL_TEXTUREGL_H_
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