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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef sw_VertexRoutine_hpp
#define sw_VertexRoutine_hpp
#include "Renderer/Color.hpp"
#include "Renderer/VertexProcessor.hpp"
#include "ShaderCore.hpp"
#include "VertexShader.hpp"
namespace sw
{
class VertexRoutinePrototype : public Function<Void(Pointer<Byte>, Pointer<Byte>, Pointer<Byte>, Pointer<Byte>)>
{
public:
VertexRoutinePrototype() : vertex(Arg<0>()), batch(Arg<1>()), task(Arg<2>()), data(Arg<3>()) {}
virtual ~VertexRoutinePrototype() {}
protected:
Pointer<Byte> vertex;
Pointer<Byte> batch;
Pointer<Byte> task;
Pointer<Byte> data;
};
class VertexRoutine : public VertexRoutinePrototype
{
public:
VertexRoutine(const VertexProcessor::State &state, const VertexShader *shader);
virtual ~VertexRoutine();
void generate();
protected:
Pointer<Byte> constants;
Int clipFlags;
RegisterArray<MAX_VERTEX_INPUTS> v; // Input registers
RegisterArray<MAX_VERTEX_OUTPUTS> o; // Output registers
const VertexProcessor::State &state;
private:
virtual void pipeline(UInt &index) = 0;
typedef VertexProcessor::State::Input Stream;
Vector4f readStream(Pointer<Byte> &buffer, UInt &stride, const Stream &stream, const UInt &index);
void readInput(UInt &index);
void computeClipFlags();
void postTransform();
void writeCache(Pointer<Byte> &cacheLine);
void writeVertex(const Pointer<Byte> &vertex, Pointer<Byte> &cacheLine);
void transformFeedback(const Pointer<Byte> &vertex, const UInt &primitiveNumber, const UInt &indexInPrimitive);
};
}
#endif // sw_VertexRoutine_hpp