Nicolas Capens | 0bac285 | 2016-05-07 06:09:58 -0400 | [diff] [blame] | 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 | // VertexDataManager.h: Defines the VertexDataManager, a class that |
| 16 | // runs the Buffer translation process. |
| 17 | |
| 18 | #ifndef LIBGLES_CM_VERTEXDATAMANAGER_H_ |
| 19 | #define LIBGLES_CM_VERTEXDATAMANAGER_H_ |
| 20 | |
| 21 | #include "Context.h" |
| 22 | #include "Device.hpp" |
| 23 | |
| 24 | #include <GLES/gl.h> |
| 25 | |
| 26 | namespace es1 |
| 27 | { |
| 28 | |
| 29 | struct TranslatedAttribute |
| 30 | { |
| 31 | sw::StreamType type; |
| 32 | int count; |
| 33 | bool normalized; |
| 34 | |
| 35 | unsigned int offset; |
| 36 | unsigned int stride; // 0 means not to advance the read pointer at all |
| 37 | |
| 38 | sw::Resource *vertexBuffer; |
| 39 | }; |
| 40 | |
| 41 | class VertexBuffer |
| 42 | { |
| 43 | public: |
| 44 | VertexBuffer(unsigned int size); |
| 45 | virtual ~VertexBuffer(); |
| 46 | |
| 47 | void unmap(); |
| 48 | |
| 49 | sw::Resource *getResource() const; |
| 50 | |
| 51 | protected: |
| 52 | sw::Resource *mVertexBuffer; |
| 53 | }; |
| 54 | |
| 55 | class ConstantVertexBuffer : public VertexBuffer |
| 56 | { |
| 57 | public: |
| 58 | ConstantVertexBuffer(float x, float y, float z, float w); |
| 59 | ~ConstantVertexBuffer(); |
| 60 | }; |
| 61 | |
| 62 | class StreamingVertexBuffer : public VertexBuffer |
| 63 | { |
| 64 | public: |
| 65 | StreamingVertexBuffer(unsigned int size); |
| 66 | ~StreamingVertexBuffer(); |
| 67 | |
| 68 | void *map(const VertexAttribute &attribute, unsigned int requiredSpace, unsigned int *streamOffset); |
| 69 | void reserveRequiredSpace(); |
| 70 | void addRequiredSpace(unsigned int requiredSpace); |
| 71 | |
| 72 | protected: |
| 73 | unsigned int mBufferSize; |
| 74 | unsigned int mWritePosition; |
| 75 | unsigned int mRequiredSpace; |
| 76 | }; |
| 77 | |
| 78 | class VertexDataManager |
| 79 | { |
| 80 | public: |
| 81 | VertexDataManager(Context *context); |
| 82 | virtual ~VertexDataManager(); |
| 83 | |
| 84 | void dirtyCurrentValue(int index) { mDirtyCurrentValue[index] = true; } |
| 85 | |
| 86 | GLenum prepareVertexData(GLint start, GLsizei count, TranslatedAttribute *outAttribs); |
| 87 | |
| 88 | private: |
| 89 | unsigned int writeAttributeData(StreamingVertexBuffer *vertexBuffer, GLint start, GLsizei count, const VertexAttribute &attribute); |
| 90 | |
| 91 | Context *const mContext; |
| 92 | |
| 93 | StreamingVertexBuffer *mStreamingBuffer; |
| 94 | |
| 95 | bool mDirtyCurrentValue[MAX_VERTEX_ATTRIBS]; |
| 96 | ConstantVertexBuffer *mCurrentValueBuffer[MAX_VERTEX_ATTRIBS]; |
| 97 | }; |
| 98 | |
| 99 | } |
| 100 | |
| 101 | #endif // LIBGLES_CM_VERTEXDATAMANAGER_H_ |