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_PROGRAM_H
18#define ANDROID_RS_PROGRAM_H
19
20#include "rsProgramBase.h"
21#include "rsElement.h"
22
23// ---------------------------------------------------------------------------
24namespace android {
25namespace renderscript {
26
27#define RS_SHADER_INTERNAL "//rs_shader_internal\n"
28#define RS_SHADER_ATTR "ATTRIB_"
29#define RS_SHADER_UNI "UNI_"
30
31class Program : public ProgramBase {
32public:
33    struct Hal {
34        mutable void *drv;
35
36        struct State {
37            // The difference between Textures and Constants is how they are accessed
38            // Texture lookups go though a sampler which in effect converts normalized
39            // coordinates into type specific.  Multiple samples may also be taken
40            // and filtered.
41            //
42            // Constants are strictly accessed by the shader code
43            Allocation **textures;
44            RsTextureTarget *textureTargets;
45            uint32_t texturesCount;
46
47            Sampler **samplers;
48            uint32_t samplersCount;
49
50            Allocation **constants;
51            Type **constantTypes;
52            uint32_t constantsCount;
53
54            Element **inputElements;
55            uint32_t inputElementsCount;
56        };
57        State state;
58    };
59    Hal mHal;
60
61    Program(Context *, const char * shaderText, size_t shaderLength,
62            const uint32_t * params, size_t paramLength);
63    virtual ~Program();
64    virtual bool freeChildren();
65
66    void bindAllocation(Context *, Allocation *, uint32_t slot);
67
68    bool isUserProgram() const {return !mIsInternal;}
69
70    void bindTexture(Context *, uint32_t slot, Allocation *);
71    void bindSampler(Context *, uint32_t slot, Sampler *);
72
73protected:
74    ObjectBaseRef<Allocation> *mTextures;
75    ObjectBaseRef<Sampler> *mSamplers;
76    ObjectBaseRef<Allocation> *mConstants;
77    ObjectBaseRef<Type> *mConstantTypes;
78    ObjectBaseRef<Element> *mInputElements;
79
80    bool mIsInternal;
81    String8 mUserShader;
82    void initMemberVars();
83};
84
85}
86}
87#endif // ANDROID_RS_PROGRAM_H
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