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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_RSD_VERTEX_ARRAY_H
     18 #define ANDROID_RSD_VERTEX_ARRAY_H
     19 
     20 #include "rsUtils.h"
     21 
     22 #include <string>
     23 
     24 namespace android {
     25 namespace renderscript {
     26 
     27 class Context;
     28 
     29 } // namespace renderscript
     30 } // namespace android
     31 
     32 // An element is a group of Components that occupies one cell in a structure.
     33 class RsdVertexArray {
     34 public:
     35     class Attrib {
     36     public:
     37         uint32_t buffer;
     38         const uint8_t * ptr;
     39         size_t offset;
     40         uint32_t type;
     41         uint32_t size;
     42         uint32_t stride;
     43         bool normalized;
     44         std::string name;
     45 
     46         Attrib();
     47         void clear();
     48         void set(uint32_t type, uint32_t size, uint32_t stride, bool normalized, size_t offset, const char *name);
     49     };
     50 
     51     RsdVertexArray(const Attrib *attribs, uint32_t numAttribs);
     52     virtual ~RsdVertexArray();
     53 
     54     void setup(const android::renderscript::Context *rsc) const;
     55     void logAttrib(uint32_t idx, uint32_t slot) const;
     56 
     57 protected:
     58     void clear(uint32_t index);
     59     uint32_t mActiveBuffer;
     60     const uint8_t * mActivePointer;
     61     uint32_t mCount;
     62 
     63     const Attrib *mAttribs;
     64 };
     65 
     66 
     67 class RsdVertexArrayState {
     68 public:
     69     RsdVertexArrayState();
     70     ~RsdVertexArrayState();
     71     void init(uint32_t maxAttrs);
     72 
     73     bool *mAttrsEnabled;
     74     uint32_t mAttrsEnabledSize;
     75 };
     76 
     77 
     78 #endif //ANDROID_RSD_VERTEX_ARRAY_H
     79 
     80 
     81 
     82