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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.
//
// ProgramD3D.cpp: Defines the rx::ProgramD3D class which implements rx::ProgramImpl.
#include "libANGLE/renderer/ProgramImpl.h"
#include "common/utilities.h"
namespace rx
{
namespace
{
unsigned int ParseAndStripArrayIndex(std::string* name)
{
unsigned int subscript = GL_INVALID_INDEX;
// Strip any trailing array operator and retrieve the subscript
size_t open = name->find_last_of('[');
size_t close = name->find_last_of(']');
if (open != std::string::npos && close == name->length() - 1)
{
subscript = atoi(name->substr(open + 1).c_str());
name->erase(open);
}
return subscript;
}
}
LinkResult::LinkResult(bool linkSuccess, const gl::Error &error)
: linkSuccess(linkSuccess),
error(error)
{
}
ProgramImpl::~ProgramImpl()
{
// Ensure that reset was called by the inherited class during destruction
ASSERT(mUniformIndex.size() == 0);
}
gl::LinkedUniform *ProgramImpl::getUniformByLocation(GLint location) const
{
ASSERT(location >= 0 && static_cast<size_t>(location) < mUniformIndex.size());
return mUniforms[mUniformIndex[location].index];
}
gl::LinkedUniform *ProgramImpl::getUniformByName(const std::string &name) const
{
for (size_t uniformIndex = 0; uniformIndex < mUniforms.size(); uniformIndex++)
{
if (mUniforms[uniformIndex]->name == name)
{
return mUniforms[uniformIndex];
}
}
return NULL;
}
gl::UniformBlock *ProgramImpl::getUniformBlockByIndex(GLuint blockIndex) const
{
ASSERT(blockIndex < mUniformBlocks.size());
return mUniformBlocks[blockIndex];
}
GLint ProgramImpl::getUniformLocation(std::string name)
{
unsigned int subscript = ParseAndStripArrayIndex(&name);
unsigned int numUniforms = mUniformIndex.size();
for (unsigned int location = 0; location < numUniforms; location++)
{
if (mUniformIndex[location].name == name)
{
const int index = mUniformIndex[location].index;
const bool isArray = mUniforms[index]->isArray();
if ((isArray && mUniformIndex[location].element == subscript) ||
(subscript == GL_INVALID_INDEX))
{
return location;
}
}
}
return -1;
}
GLuint ProgramImpl::getUniformIndex(std::string name)
{
unsigned int subscript = ParseAndStripArrayIndex(&name);
// The app is not allowed to specify array indices other than 0 for arrays of basic types
if (subscript != 0 && subscript != GL_INVALID_INDEX)
{
return GL_INVALID_INDEX;
}
unsigned int numUniforms = mUniforms.size();
for (unsigned int index = 0; index < numUniforms; index++)
{
if (mUniforms[index]->name == name)
{
if (mUniforms[index]->isArray() || subscript == GL_INVALID_INDEX)
{
return index;
}
}
}
return GL_INVALID_INDEX;
}
GLuint ProgramImpl::getUniformBlockIndex(std::string name) const
{
unsigned int subscript = ParseAndStripArrayIndex(&name);
unsigned int numUniformBlocks = mUniformBlocks.size();
for (unsigned int blockIndex = 0; blockIndex < numUniformBlocks; blockIndex++)
{
const gl::UniformBlock &uniformBlock = *mUniformBlocks[blockIndex];
if (uniformBlock.name == name)
{
const bool arrayElementZero = (subscript == GL_INVALID_INDEX && uniformBlock.elementIndex == 0);
if (subscript == uniformBlock.elementIndex || arrayElementZero)
{
return blockIndex;
}
}
}
return GL_INVALID_INDEX;
}
void ProgramImpl::reset()
{
std::fill(mSemanticIndex, mSemanticIndex + ArraySize(mSemanticIndex), -1);
SafeDeleteContainer(mUniforms);
mUniformIndex.clear();
SafeDeleteContainer(mUniformBlocks);
mTransformFeedbackLinkedVaryings.clear();
}
}
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