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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_VertexProcessor_hpp
#define sw_VertexProcessor_hpp
#include "Matrix.hpp"
#include "Context.hpp"
#include "RoutineCache.hpp"
#include "Pipeline/SpirvShader.hpp"
namespace sw
{
struct DrawData;
struct VertexCache // FIXME: Variable size
{
void clear();
Vertex vertex[16][4];
unsigned int tag[16];
int drawCall;
};
struct VertexTask
{
unsigned int vertexCount;
unsigned int primitiveStart;
VertexCache vertexCache;
};
class VertexProcessor
{
public:
struct States
{
unsigned int computeHash();
uint64_t shaderID;
bool textureSampling : 1; // TODO: Eliminate by querying shader.
unsigned char verticesPerPrimitive : 2; // 1 (points), 2 (lines) or 3 (triangles)
Sampler::State sampler[VERTEX_TEXTURE_IMAGE_UNITS];
struct Input
{
operator bool() const // Returns true if stream contains data
{
return count != 0;
}
StreamType type : BITS(STREAMTYPE_LAST);
unsigned int count : 3;
bool normalized : 1;
unsigned int attribType : BITS(SpirvShader::ATTRIBTYPE_LAST);
};
Input input[MAX_VERTEX_INPUTS];
};
struct State : States
{
State();
bool operator==(const State &state) const;
unsigned int hash;
};
typedef void (*RoutinePointer)(Vertex *output, unsigned int *batch, VertexTask *vertexTask, DrawData *draw);
VertexProcessor(Context *context);
virtual ~VertexProcessor();
void setInputStream(int index, const Stream &stream);
void resetInputStreams();
void setInstanceID(int instanceID);
protected:
const State update(VkPrimitiveTopology topology);
Routine *routine(const State &state);
void setRoutineCacheSize(int cacheSize);
private:
Context *const context;
RoutineCache<State> *routineCache;
};
}
#endif // sw_VertexProcessor_hpp