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 "rsObjectBase.h"
22
23// ---------------------------------------------------------------------------
24namespace android {
25namespace renderscript {
26/*****************************************************************************
27 * CAUTION
28 *
29 * Any layout changes for this class may require a corresponding change to be
30 * made to frameworks/compile/libbcc/lib/ScriptCRT/rs_core.c, which contains
31 * a partial copy of the information below.
32 *
33 *****************************************************************************/
34
35// An element is a group of Components that occupies one cell in a structure.
36class Mesh : public ObjectBase {
37public:
38    struct Hal {
39        mutable void *drv;
40
41        struct State {
42            // Contains vertex data
43            // Position, normal, texcoord, etc could either be strided in one allocation
44            // of provided separetely in multiple ones
45            Allocation **vertexBuffers;
46            uint32_t vertexBuffersCount;
47
48            // indexBuffers[i] could be nullptr, in which case only primitives[i] is used
49            Allocation **indexBuffers;
50            uint32_t indexBuffersCount;
51            RsPrimitive *primitives;
52            uint32_t primitivesCount;
53        };
54        State state;
55    };
56    Hal mHal;
57
58    Mesh(Context *);
59    Mesh(Context *, uint32_t vertexBuffersCount, uint32_t primitivesCount);
60    ~Mesh();
61
62    virtual void serialize(Context *rsc, OStream *stream) const;
63    virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_MESH; }
64    static Mesh *createFromStream(Context *rsc, IStream *stream);
65    void init();
66
67    void setVertexBuffer(Allocation *vb, uint32_t index) {
68        mVertexBuffers[index].set(vb);
69        mHal.state.vertexBuffers[index] = vb;
70    }
71
72    void setPrimitive(Allocation *idx, RsPrimitive prim, uint32_t index) {
73        mIndexBuffers[index].set(idx);
74        mHal.state.indexBuffers[index] = idx;
75        mHal.state.primitives[index] = prim;
76    }
77
78    void render(Context *) const;
79    void renderPrimitive(Context *, uint32_t primIndex) const;
80    void renderPrimitiveRange(Context *, uint32_t primIndex, uint32_t start, uint32_t len) const;
81    void uploadAll(Context *);
82
83    // Bounding volumes
84    float mBBoxMin[3];
85    float mBBoxMax[3];
86    void computeBBox(Context *rsc);
87protected:
88    ObjectBaseRef<Allocation> *mVertexBuffers;
89    ObjectBaseRef<Allocation> *mIndexBuffers;
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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