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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.
//
// RenderbufferGL.cpp: Implements the class methods for RenderbufferGL.
#include "libANGLE/renderer/gl/RenderbufferGL.h"
#include "common/debug.h"
#include "libANGLE/Caps.h"
#include "libANGLE/angletypes.h"
#include "libANGLE/renderer/gl/FunctionsGL.h"
#include "libANGLE/renderer/gl/StateManagerGL.h"
#include "libANGLE/renderer/gl/formatutilsgl.h"
#include "libANGLE/renderer/gl/renderergl_utils.h"
namespace rx
{
RenderbufferGL::RenderbufferGL(const FunctionsGL *functions,
const WorkaroundsGL &workarounds,
StateManagerGL *stateManager,
const gl::TextureCapsMap &textureCaps)
: RenderbufferImpl(),
mFunctions(functions),
mWorkarounds(workarounds),
mStateManager(stateManager),
mTextureCaps(textureCaps),
mRenderbufferID(0)
{
mFunctions->genRenderbuffers(1, &mRenderbufferID);
mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
}
RenderbufferGL::~RenderbufferGL()
{
mStateManager->deleteRenderbuffer(mRenderbufferID);
mRenderbufferID = 0;
}
gl::Error RenderbufferGL::setStorage(GLenum internalformat, size_t width, size_t height)
{
mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
nativegl::RenderbufferFormat renderbufferFormat =
nativegl::GetRenderbufferFormat(mFunctions, mWorkarounds, internalformat);
mFunctions->renderbufferStorage(GL_RENDERBUFFER, renderbufferFormat.internalFormat,
static_cast<GLsizei>(width), static_cast<GLsizei>(height));
return gl::Error(GL_NO_ERROR);
}
gl::Error RenderbufferGL::setStorageMultisample(size_t samples, GLenum internalformat, size_t width, size_t height)
{
mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
nativegl::RenderbufferFormat renderbufferFormat =
nativegl::GetRenderbufferFormat(mFunctions, mWorkarounds, internalformat);
mFunctions->renderbufferStorageMultisample(
GL_RENDERBUFFER, static_cast<GLsizei>(samples), renderbufferFormat.internalFormat,
static_cast<GLsizei>(width), static_cast<GLsizei>(height));
const gl::TextureCaps &formatCaps = mTextureCaps.get(internalformat);
if (samples > formatCaps.getMaxSamples())
{
// Before version 4.2, it is unknown if the specific internal format can support the requested number
// of samples. It is expected that GL_OUT_OF_MEMORY is returned if the renderbuffer cannot be created.
GLenum error = GL_NO_ERROR;
do
{
error = mFunctions->getError();
if (error == GL_OUT_OF_MEMORY)
{
return gl::Error(GL_OUT_OF_MEMORY);
}
ASSERT(error == GL_NO_ERROR);
} while (error != GL_NO_ERROR);
}
return gl::Error(GL_NO_ERROR);
}
gl::Error RenderbufferGL::setStorageEGLImageTarget(egl::Image *image)
{
UNIMPLEMENTED();
return gl::Error(GL_INVALID_OPERATION);
}
GLuint RenderbufferGL::getRenderbufferID() const
{
return mRenderbufferID;
}
}
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