rsMesh.h revision 253325d2a19162c1dd18de59c357e36adf4a760b 
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_RS_MESH_H
18#define ANDROID_RS_MESH_H
19
20
21#include "RenderScript.h"
22
23// ---------------------------------------------------------------------------
24namespace android {
25namespace renderscript {
26
27
28// An element is a group of Components that occupies one cell in a structure.
29class Mesh : public ObjectBase {
30public:
31    struct Hal {
32        mutable void *drv;
33
34        struct State {
35            // Contains vertex data
36            // Position, normal, texcoord, etc could either be strided in one allocation
37            // of provided separetely in multiple ones
38            Allocation **vertexBuffers;
39            uint32_t vertexBuffersCount;
40
41            // indexBuffers[i] could be NULL, in which case only primitives[i] is used
42            Allocation **indexBuffers;
43            uint32_t indexBuffersCount;
44            RsPrimitive *primitives;
45            uint32_t primitivesCount;
46        };
47        State state;
48    };
49    Hal mHal;
50
51    Mesh(Context *);
52    Mesh(Context *, uint32_t vertexBuffersCount, uint32_t primitivesCount);
53    ~Mesh();
54
55    virtual void serialize(OStream *stream) const;
56    virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_MESH; }
57    static Mesh *createFromStream(Context *rsc, IStream *stream);
58    void init();
59
60    void setVertexBuffer(Allocation *vb, uint32_t index) {
61        mVertexBuffers[index].set(vb);
62        mHal.state.vertexBuffers[index] = vb;
63    }
64
65    void setPrimitive(Allocation *idx, RsPrimitive prim, uint32_t index) {
66        mIndexBuffers[index].set(idx);
67        mHal.state.indexBuffers[index] = idx;
68        mHal.state.primitives[index] = prim;
69    }
70
71    void render(Context *) const;
72    void renderPrimitive(Context *, uint32_t primIndex) const;
73    void renderPrimitiveRange(Context *, uint32_t primIndex, uint32_t start, uint32_t len) const;
74    void uploadAll(Context *);
75
76    // Bounding volumes
77    float mBBoxMin[3];
78    float mBBoxMax[3];
79    void computeBBox();
80protected:
81    ObjectBaseRef<Allocation> *mVertexBuffers;
82    ObjectBaseRef<Allocation> *mIndexBuffers;
83    bool mInitialized;
84};
85
86class MeshContext {
87public:
88    MeshContext() {
89    }
90    ~MeshContext() {
91    }
92};
93
94}
95}
96#endif //ANDROID_RS_MESH_H
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