rsSampler.h revision 3715b00e7b10a2624c1d5c696186c7a2f4a75a91 
1/*
2 * Copyright (C) 2009 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_SAMPLER_H
18#define ANDROID_RS_SAMPLER_H
19
20#include "rsAllocation.h"
21#include "rs.h"
22
23// ---------------------------------------------------------------------------
24namespace android {
25namespace renderscript {
26
27const static uint32_t RS_MAX_SAMPLER_SLOT = 16;
28
29class SamplerState;
30/*****************************************************************************
31 * CAUTION
32 *
33 * Any layout changes for this class may require a corresponding change to be
34 * made to frameworks/compile/libbcc/lib/ScriptCRT/rs_core.c, which contains
35 * a partial copy of the information below.
36 *
37 *****************************************************************************/
38class Sampler : public ObjectBase {
39public:
40    struct Hal {
41        mutable void *drv;
42
43        struct State {
44            RsSamplerValue magFilter;
45            RsSamplerValue minFilter;
46            RsSamplerValue wrapS;
47            RsSamplerValue wrapT;
48            RsSamplerValue wrapR;
49            float aniso;
50        };
51        State state;
52    };
53    Hal mHal;
54
55    static ObjectBaseRef<Sampler> getSampler(Context *,
56                                             RsSamplerValue magFilter,
57                                             RsSamplerValue minFilter,
58                                             RsSamplerValue wrapS,
59                                             RsSamplerValue wrapT,
60                                             RsSamplerValue wrapR,
61                                             float aniso = 1.0f);
62    void bindToContext(SamplerState *, uint32_t slot);
63    void unbindFromContext(SamplerState *);
64
65    virtual void serialize(OStream *stream) const;
66    virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_SAMPLER; }
67    static Sampler *createFromStream(Context *rsc, IStream *stream);
68
69protected:
70    int32_t mBoundSlot;
71
72    virtual void preDestroy() const;
73    virtual ~Sampler();
74
75private:
76    Sampler(Context *);
77    Sampler(Context *,
78            RsSamplerValue magFilter,
79            RsSamplerValue minFilter,
80            RsSamplerValue wrapS,
81            RsSamplerValue wrapT,
82            RsSamplerValue wrapR,
83            float aniso = 1.0f);
84};
85
86
87class SamplerState {
88public:
89    ObjectBaseRef<Sampler> mSamplers[RS_MAX_SAMPLER_SLOT];
90    void init(Context *rsc) {
91    }
92    void deinit(Context *rsc) {
93        for (uint32_t i = 0; i < RS_MAX_SAMPLER_SLOT; i ++) {
94            mSamplers[i].clear();
95        }
96    }
97    // Cache of all existing raster programs.
98    Vector<Sampler *> mAllSamplers;
99};
100
101}
102}
103#endif //ANDROID_RS_SAMPLER_H
104
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