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//
// Copyright (c) 2002-2012 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.
//
// Renderbuffer.cpp: the gl::Renderbuffer class and its derived classes
// Colorbuffer, Depthbuffer and Stencilbuffer. Implements GL renderbuffer
// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
#include "libGLESv2/Renderbuffer.h"
#include "libGLESv2/Texture.h"
#include "libGLESv2/formatutils.h"
#include "libGLESv2/FramebufferAttachment.h"
#include "libGLESv2/renderer/Renderer.h"
#include "libGLESv2/renderer/RenderTarget.h"
#include "common/utilities.h"
namespace gl
{
unsigned int RenderbufferStorage::mCurrentSerial = 1;
Renderbuffer::Renderbuffer(GLuint id, RenderbufferStorage *newStorage)
: RefCountObject(id),
mStorage(newStorage)
{
ASSERT(mStorage);
}
Renderbuffer::~Renderbuffer()
{
SafeDelete(mStorage);
}
void Renderbuffer::setStorage(RenderbufferStorage *newStorage)
{
ASSERT(newStorage);
SafeDelete(mStorage);
mStorage = newStorage;
}
RenderbufferStorage *Renderbuffer::getStorage()
{
ASSERT(mStorage);
return mStorage;
}
GLsizei Renderbuffer::getWidth() const
{
ASSERT(mStorage);
return mStorage->getWidth();
}
GLsizei Renderbuffer::getHeight() const
{
ASSERT(mStorage);
return mStorage->getHeight();
}
GLenum Renderbuffer::getInternalFormat() const
{
ASSERT(mStorage);
return mStorage->getInternalFormat();
}
GLenum Renderbuffer::getActualFormat() const
{
ASSERT(mStorage);
return mStorage->getActualFormat();
}
GLsizei Renderbuffer::getSamples() const
{
ASSERT(mStorage);
return mStorage->getSamples();
}
GLuint Renderbuffer::getRedSize() const
{
return GetInternalFormatInfo(getActualFormat()).redBits;
}
GLuint Renderbuffer::getGreenSize() const
{
return GetInternalFormatInfo(getActualFormat()).greenBits;
}
GLuint Renderbuffer::getBlueSize() const
{
return GetInternalFormatInfo(getActualFormat()).blueBits;
}
GLuint Renderbuffer::getAlphaSize() const
{
return GetInternalFormatInfo(getActualFormat()).alphaBits;
}
GLuint Renderbuffer::getDepthSize() const
{
return GetInternalFormatInfo(getActualFormat()).depthBits;
}
GLuint Renderbuffer::getStencilSize() const
{
return GetInternalFormatInfo(getActualFormat()).stencilBits;
}
RenderbufferStorage::RenderbufferStorage() : mSerial(issueSerials(1))
{
mWidth = 0;
mHeight = 0;
mInternalFormat = GL_RGBA4;
mActualFormat = GL_RGBA8_OES;
mSamples = 0;
}
RenderbufferStorage::~RenderbufferStorage()
{
}
rx::RenderTarget *RenderbufferStorage::getRenderTarget()
{
return NULL;
}
GLsizei RenderbufferStorage::getWidth() const
{
return mWidth;
}
GLsizei RenderbufferStorage::getHeight() const
{
return mHeight;
}
GLenum RenderbufferStorage::getInternalFormat() const
{
return mInternalFormat;
}
GLenum RenderbufferStorage::getActualFormat() const
{
return mActualFormat;
}
GLsizei RenderbufferStorage::getSamples() const
{
return mSamples;
}
unsigned int RenderbufferStorage::getSerial() const
{
return mSerial;
}
unsigned int RenderbufferStorage::issueSerials(unsigned int count)
{
unsigned int firstSerial = mCurrentSerial;
mCurrentSerial += count;
return firstSerial;
}
bool RenderbufferStorage::isTexture() const
{
return false;
}
unsigned int RenderbufferStorage::getTextureSerial() const
{
return -1;
}
Colorbuffer::Colorbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain)
{
mRenderTarget = renderer->createRenderTarget(swapChain, false);
if (mRenderTarget)
{
mWidth = mRenderTarget->getWidth();
mHeight = mRenderTarget->getHeight();
mInternalFormat = mRenderTarget->getInternalFormat();
mActualFormat = mRenderTarget->getActualFormat();
mSamples = mRenderTarget->getSamples();
}
}
Colorbuffer::Colorbuffer(rx::Renderer *renderer, int width, int height, GLenum format, GLsizei samples) : mRenderTarget(NULL)
{
mRenderTarget = renderer->createRenderTarget(width, height, format, samples);
if (mRenderTarget)
{
mWidth = width;
mHeight = height;
mInternalFormat = format;
mActualFormat = mRenderTarget->getActualFormat();
mSamples = mRenderTarget->getSamples();
}
}
Colorbuffer::~Colorbuffer()
{
if (mRenderTarget)
{
delete mRenderTarget;
}
}
rx::RenderTarget *Colorbuffer::getRenderTarget()
{
return mRenderTarget;
}
DepthStencilbuffer::DepthStencilbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain)
{
mDepthStencil = renderer->createRenderTarget(swapChain, true);
if (mDepthStencil)
{
mWidth = mDepthStencil->getWidth();
mHeight = mDepthStencil->getHeight();
mInternalFormat = mDepthStencil->getInternalFormat();
mSamples = mDepthStencil->getSamples();
mActualFormat = mDepthStencil->getActualFormat();
}
}
DepthStencilbuffer::DepthStencilbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples)
{
mDepthStencil = renderer->createRenderTarget(width, height, GL_DEPTH24_STENCIL8_OES, samples);
mWidth = mDepthStencil->getWidth();
mHeight = mDepthStencil->getHeight();
mInternalFormat = GL_DEPTH24_STENCIL8_OES;
mActualFormat = mDepthStencil->getActualFormat();
mSamples = mDepthStencil->getSamples();
}
DepthStencilbuffer::~DepthStencilbuffer()
{
if (mDepthStencil)
{
delete mDepthStencil;
}
}
rx::RenderTarget *DepthStencilbuffer::getRenderTarget()
{
return mDepthStencil;
}
Depthbuffer::Depthbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples) : DepthStencilbuffer(renderer, width, height, samples)
{
if (mDepthStencil)
{
mInternalFormat = GL_DEPTH_COMPONENT16; // If the renderbuffer parameters are queried, the calling function
// will expect one of the valid renderbuffer formats for use in
// glRenderbufferStorage
}
}
Depthbuffer::~Depthbuffer()
{
}
Stencilbuffer::Stencilbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples) : DepthStencilbuffer(renderer, width, height, samples)
{
if (mDepthStencil)
{
mInternalFormat = GL_STENCIL_INDEX8; // If the renderbuffer parameters are queried, the calling function
// will expect one of the valid renderbuffer formats for use in
// glRenderbufferStorage
}
}
Stencilbuffer::~Stencilbuffer()
{
}
}
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