Renderbuffer.cpp

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Author : Geoff Lang
Date : 2014-07-22 15:14:06
Hash : 5d601382
Message : Simplify formatutils.h by exposing the info structures. Removed all the separate query functions and simply expose the internal info structures. This reduces the number of std::map/std::set operations that were hidden behind the API. Moved the validation tables for ES3 format combinations and effective internal formats into validationES3.cpp so that formatutils.h only has generic GL format queries. BUG=angle:658 Change-Id: Ieb60d42b8eafcdb4f21dcbec130b39478ce5f7c5 Reviewed-on: https://chromium-review.googlesource.com/206835 Reviewed-by: Nicolas Capens <capn@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

src/libGLESv2/Renderbuffer.cpp

#include "precompiled.h"
//
// 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/renderer/RenderTarget.h"

#include "libGLESv2/Texture.h"
#include "libGLESv2/renderer/Renderer.h"
#include "common/utilities.h"
#include "libGLESv2/formatutils.h"
#include "libGLESv2/FramebufferAttachment.h"

namespace gl
{
unsigned int RenderbufferStorage::mCurrentSerial = 1;

Renderbuffer::Renderbuffer(GLuint id, RenderbufferStorage *newStorage)
  : RefCountObject(id),
    mStorage(newStorage)
{
    ASSERT(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;
}

rx::RenderTarget *RenderbufferStorage::getDepthStencil()
{
    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(GLuint 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::getDepthStencil()
{
    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()
{
}

}

kc3-lang/angle/src/libGLESv2/Renderbuffer.cpp

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kc3-lang/angle /src/libGLESv2/Renderbuffer.cpp