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* getGenericBuffer() const;
39	Buffer* getBuffer(GLuint index) const;
40	GLuint getGenericBufferName() const;
41	GLuint getBufferName(GLuint index) const;
42	int getOffset(GLuint index) const;
43	int getSize(GLuint index) const;
44	bool isActive() const;
45	bool isPaused() const;
46	GLenum primitiveMode() const;
47	int vertexOffset() const;
48
49	void setGenericBuffer(Buffer* buffer);
50	void setBuffer(GLuint index, Buffer* buffer);
51	void setBuffer(GLuint index, Buffer* buffer, GLintptr offset, GLsizeiptr size);
52	void detachBuffer(GLuint buffer);
53	void begin(GLenum primitiveMode);
54	void end();
55	void setPaused(bool paused);
56	void addVertexOffset(int count);
57
58private:
59	gl::BindingPointer<Buffer> mGenericBuffer;
60	BufferBinding mBuffer[MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS];
61
62	bool mActive;
63	bool mPaused;
64	GLenum mPrimitiveMode;
65	int mVertexOffset;
66};
67
68}
69
70#endif // LIBGLESV2_TRANSFORM_FEEDBACK_H_
71