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// TransformFeedback.h: Defines the es2::TransformFeedback class
16
17#ifndef LIBGLESV2_TRANSFORM_FEEDBACK_H_
18#define LIBGLESV2_TRANSFORM_FEEDBACK_H_
19
20#include "Buffer.h"
21#include "Context.h"
22#include "common/Object.hpp"
23#include "Renderer/Renderer.hpp"
24
25#include <GLES2/gl2.h>
26
27namespace es2
28{
29
30class TransformFeedback : public gl::NamedObject
31{
32public:
33 TransformFeedback(GLuint name);
34 ~TransformFeedback();
35
36 BufferBinding* getBuffers() { return mBuffer; }
37
38 Buffer* getBuffer(GLuint index) const;
39 GLuint getBufferName(GLuint index) const;
40 int getOffset(GLuint index) const;
41 int getSize(GLuint index) const;
42 bool isActive() const;
43 bool isPaused() const;
44 GLenum primitiveMode() const;
45 int vertexOffset() const;
46
47 void setBuffer(GLuint index, Buffer* buffer);
48 void setBuffer(GLuint index, Buffer* buffer, GLintptr offset, GLsizeiptr size);
49 void detachBuffer(GLuint buffer);
50 void begin(GLenum primitiveMode);
51 void end();
52 void setPaused(bool paused);
53 void addVertexOffset(int count);
54
55private:
56 BufferBinding mBuffer[MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS];
57
58 bool mActive;
59 bool mPaused;
60 GLenum mPrimitiveMode;
61 int mVertexOffset;
62};
63
64}
65
66#endif // LIBGLESV2_TRANSFORM_FEEDBACK_H_
67