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//
// Copyright 2017 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.
//
// params:
// Parameter wrapper structs for OpenGL ES. These helpers cache re-used values
// in entry point routines.
#include "libANGLE/params.h"
#include "common/utilities.h"
#include "libANGLE/Context.h"
#include "libANGLE/VertexArray.h"
namespace gl
{
// static
constexpr ParamTypeInfo ParamsBase::TypeInfo;
constexpr ParamTypeInfo HasIndexRange::TypeInfo;
HasIndexRange::HasIndexRange()
: ParamsBase(nullptr), mContext(nullptr), mCount(0), mType(GL_NONE), mIndices(nullptr)
{
}
HasIndexRange::HasIndexRange(Context *context, GLsizei count, GLenum type, const void *indices)
: ParamsBase(context), mContext(context), mCount(count), mType(type), mIndices(indices)
{
}
const Optional<IndexRange> &HasIndexRange::getIndexRange() const
{
if (mIndexRange.valid() || !mContext)
{
return mIndexRange;
}
const State &state = mContext->getGLState();
const gl::VertexArray *vao = state.getVertexArray();
gl::Buffer *elementArrayBuffer = vao->getElementArrayBuffer().get();
if (elementArrayBuffer)
{
uintptr_t offset = reinterpret_cast<uintptr_t>(mIndices);
IndexRange indexRange;
Error error =
elementArrayBuffer->getIndexRange(mContext, mType, static_cast<size_t>(offset), mCount,
state.isPrimitiveRestartEnabled(), &indexRange);
if (error.isError())
{
mContext->handleError(error);
return mIndexRange;
}
mIndexRange = indexRange;
}
else
{
mIndexRange = ComputeIndexRange(mType, mIndices, mCount, state.isPrimitiveRestartEnabled());
}
return mIndexRange;
}
} // namespace gl
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