1// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef sw_VertexRoutine_hpp
16#define sw_VertexRoutine_hpp
17
18#include "Renderer/Color.hpp"
19#include "Renderer/VertexProcessor.hpp"
20#include "ShaderCore.hpp"
21#include "VertexShader.hpp"
22
23namespace sw
24{
25 class VertexRoutinePrototype : public Function<Void(Pointer<Byte>, Pointer<Byte>, Pointer<Byte>, Pointer<Byte>)>
26 {
27 public:
28 VertexRoutinePrototype() : vertex(Arg<0>()), batch(Arg<1>()), task(Arg<2>()), data(Arg<3>()) {}
29 virtual ~VertexRoutinePrototype() {}
30
31 protected:
32 Pointer<Byte> vertex;
33 Pointer<Byte> batch;
34 Pointer<Byte> task;
35 Pointer<Byte> data;
36 };
37
38 class VertexRoutine : public VertexRoutinePrototype
39 {
40 public:
41 VertexRoutine(const VertexProcessor::State &state, const VertexShader *shader);
42 virtual ~VertexRoutine();
43
44 void generate();
45
46 protected:
47 Pointer<Byte> constants;
48
49 Int clipFlags;
50
51 RegisterArray<MAX_VERTEX_INPUTS> v; // Input registers
52 RegisterArray<MAX_VERTEX_OUTPUTS> o; // Output registers
53
54 const VertexProcessor::State &state;
55
56 private:
57 virtual void pipeline(UInt &index) = 0;
58
59 typedef VertexProcessor::State::Input Stream;
60
61 Vector4f readStream(Pointer<Byte> &buffer, UInt &stride, const Stream &stream, const UInt &index);
62 void readInput(UInt &index);
63 void computeClipFlags();
64 void postTransform();
65 void writeCache(Pointer<Byte> &cacheLine);
66 void writeVertex(const Pointer<Byte> &vertex, Pointer<Byte> &cacheLine);
67 void transformFeedback(const Pointer<Byte> &vertex, const UInt &primitiveNumber, const UInt &indexInPrimitive);
68 };
69}
70
71#endif // sw_VertexRoutine_hpp
72