rsMesh.h revision a04e30dbb5ab11592b03666bb3d102070759c58e 
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    Mesh(Context *);
32    Mesh(Context *, uint32_t vertexBuffersCount, uint32_t primitivesCount);
33    ~Mesh();
34
35    // Either mIndexBuffer, mPrimitiveBuffer or both could have a NULL reference
36    // If both are null, mPrimitive only would be used to render the mesh
37    struct Primitive_t {
38        ObjectBaseRef<Allocation> mIndexBuffer;
39        RsPrimitive mPrimitive;
40    };
41
42    // compatibility to not break the build
43    ObjectBaseRef<Allocation> *mVertexBuffers;
44    uint32_t mVertexBufferCount;
45    Primitive_t ** mPrimitives;
46    uint32_t mPrimitivesCount;
47    // end compatibility
48
49    virtual void serialize(OStream *stream) const;
50    virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_MESH; }
51    static Mesh *createFromStream(Context *rsc, IStream *stream);
52    void init();
53
54    struct Hal {
55        mutable void *drv;
56
57        struct State {
58            // Contains vertex data
59            // Position, normal, texcoord, etc could either be strided in one allocation
60            // of provided separetely in multiple ones
61            ObjectBaseRef<Allocation> *vertexBuffers;
62            uint32_t vertexBuffersCount;
63
64            Primitive_t ** primitives;
65            uint32_t primitivesCount;
66        };
67        State state;
68    };
69    Hal mHal;
70
71    void setVertexBuffer(Allocation *vb, uint32_t index) {
72        mHal.state.vertexBuffers[index].set(vb);
73    }
74
75    void setPrimitive(Allocation *idx, RsPrimitive prim, uint32_t index) {
76        mHal.state.primitives[index]->mIndexBuffer.set(idx);
77        mHal.state.primitives[index]->mPrimitive = prim;
78    }
79
80    void render(Context *) const;
81    void renderPrimitive(Context *, uint32_t primIndex) const;
82    void renderPrimitiveRange(Context *, uint32_t primIndex, uint32_t start, uint32_t len) const;
83    void uploadAll(Context *);
84
85    // Bounding volumes
86    float mBBoxMin[3];
87    float mBBoxMax[3];
88    void computeBBox();
89protected:
90    bool mInitialized;
91};
92
93class MeshContext {
94public:
95    MeshContext() {
96    }
97    ~MeshContext() {
98    }
99};
100
101}
102}
103#endif //ANDROID_RS_MESH_H
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