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//
// Copyright (c) 2014 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.
//
// FramebufferAttachment.cpp: the gl::FramebufferAttachment class and its derived classes
// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
#include "libANGLE/FramebufferAttachment.h"
#include "common/utilities.h"
#include "libANGLE/Config.h"
#include "libANGLE/Renderbuffer.h"
#include "libANGLE/Surface.h"
#include "libANGLE/Texture.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/FramebufferImpl.h"
namespace gl
{
////// FramebufferAttachment::Target Implementation //////
FramebufferAttachment::Target::Target()
: mBinding(GL_NONE),
mTextureIndex(ImageIndex::MakeInvalid())
{
}
FramebufferAttachment::Target::Target(GLenum binding, const ImageIndex &imageIndex)
: mBinding(binding),
mTextureIndex(imageIndex)
{
}
FramebufferAttachment::Target::Target(const Target &other)
: mBinding(other.mBinding),
mTextureIndex(other.mTextureIndex)
{
}
FramebufferAttachment::Target &FramebufferAttachment::Target::operator=(const Target &other)
{
this->mBinding = other.mBinding;
this->mTextureIndex = other.mTextureIndex;
return *this;
}
////// FramebufferAttachment Implementation //////
FramebufferAttachment::FramebufferAttachment()
: mType(GL_NONE), mResource(nullptr)
{
}
FramebufferAttachment::FramebufferAttachment(GLenum type,
GLenum binding,
const ImageIndex &textureIndex,
FramebufferAttachmentObject *resource)
: mResource(nullptr)
{
attach(type, binding, textureIndex, resource);
}
FramebufferAttachment::FramebufferAttachment(const FramebufferAttachment &other)
: mResource(nullptr)
{
attach(other.mType, other.mTarget.binding(), other.mTarget.textureIndex(), other.mResource);
}
FramebufferAttachment &FramebufferAttachment::operator=(const FramebufferAttachment &other)
{
attach(other.mType, other.mTarget.binding(), other.mTarget.textureIndex(), other.mResource);
return *this;
}
FramebufferAttachment::~FramebufferAttachment()
{
detach();
}
void FramebufferAttachment::detach()
{
mType = GL_NONE;
if (mResource != nullptr)
{
mResource->onDetach();
mResource = nullptr;
}
// not technically necessary, could omit for performance
mTarget = Target();
}
void FramebufferAttachment::attach(GLenum type,
GLenum binding,
const ImageIndex &textureIndex,
FramebufferAttachmentObject *resource)
{
mType = type;
mTarget = Target(binding, textureIndex);
if (resource)
{
resource->onAttach();
}
if (mResource != nullptr)
{
mResource->onDetach();
}
mResource = resource;
}
GLuint FramebufferAttachment::getRedSize() const
{
return GetInternalFormatInfo(getInternalFormat()).redBits;
}
GLuint FramebufferAttachment::getGreenSize() const
{
return GetInternalFormatInfo(getInternalFormat()).greenBits;
}
GLuint FramebufferAttachment::getBlueSize() const
{
return GetInternalFormatInfo(getInternalFormat()).blueBits;
}
GLuint FramebufferAttachment::getAlphaSize() const
{
return GetInternalFormatInfo(getInternalFormat()).alphaBits;
}
GLuint FramebufferAttachment::getDepthSize() const
{
return GetInternalFormatInfo(getInternalFormat()).depthBits;
}
GLuint FramebufferAttachment::getStencilSize() const
{
return GetInternalFormatInfo(getInternalFormat()).stencilBits;
}
GLenum FramebufferAttachment::getComponentType() const
{
return GetInternalFormatInfo(getInternalFormat()).componentType;
}
GLenum FramebufferAttachment::getColorEncoding() const
{
return GetInternalFormatInfo(getInternalFormat()).colorEncoding;
}
GLuint FramebufferAttachment::id() const
{
return mResource->getId();
}
const ImageIndex &FramebufferAttachment::getTextureImageIndex() const
{
ASSERT(type() == GL_TEXTURE);
return mTarget.textureIndex();
}
GLenum FramebufferAttachment::cubeMapFace() const
{
ASSERT(mType == GL_TEXTURE);
const auto &index = mTarget.textureIndex();
return IsCubeMapTextureTarget(index.type) ? index.type : GL_NONE;
}
GLint FramebufferAttachment::mipLevel() const
{
ASSERT(type() == GL_TEXTURE);
return mTarget.textureIndex().mipIndex;
}
GLint FramebufferAttachment::layer() const
{
ASSERT(mType == GL_TEXTURE);
const auto &index = mTarget.textureIndex();
if (index.type == GL_TEXTURE_2D_ARRAY || index.type == GL_TEXTURE_3D)
{
return index.layerIndex;
}
return 0;
}
Texture *FramebufferAttachment::getTexture() const
{
return rx::GetAs<Texture>(mResource);
}
Renderbuffer *FramebufferAttachment::getRenderbuffer() const
{
return rx::GetAs<Renderbuffer>(mResource);
}
const egl::Surface *FramebufferAttachment::getSurface() const
{
return rx::GetAs<egl::Surface>(mResource);
}
}
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