rsProgramFragment.cpp revision 807fdc4b6f3fb893015ee136565d6151bb2332d3 
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#include "rsContext.h"
18#include "rsProgramFragment.h"
19
20using namespace android;
21using namespace android::renderscript;
22
23ProgramFragment::ProgramFragment(Context *rsc, const char * shaderText, size_t shaderLength,
24                                 const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
25
26                                 const uint32_t * params, size_t paramLength)
27    : Program(rsc, shaderText, shaderLength, params, paramLength) {
28    mConstantColor[0] = 1.f;
29    mConstantColor[1] = 1.f;
30    mConstantColor[2] = 1.f;
31    mConstantColor[3] = 1.f;
32
33    mRSC->mHal.funcs.fragment.init(mRSC, this, mUserShader.string(), mUserShader.length(),
34                                   textureNames, textureNamesCount, textureNamesLength);
35}
36
37ProgramFragment::~ProgramFragment() {
38    mRSC->mHal.funcs.fragment.destroy(mRSC, this);
39}
40
41void ProgramFragment::setConstantColor(Context *rsc, float r, float g, float b, float a) {
42    if (isUserProgram()) {
43        ALOGE("Attempting to set fixed function emulation color on user program");
44        rsc->setError(RS_ERROR_BAD_SHADER, "Cannot  set fixed function emulation color on user program");
45        return;
46    }
47    if (mHal.state.constants[0] == NULL) {
48        ALOGE("Unable to set fixed function emulation color because allocation is missing");
49        rsc->setError(RS_ERROR_BAD_SHADER, "Unable to set fixed function emulation color because allocation is missing");
50        return;
51    }
52    mConstantColor[0] = r;
53    mConstantColor[1] = g;
54    mConstantColor[2] = b;
55    mConstantColor[3] = a;
56    void *p = rsc->mHal.funcs.allocation.lock1D(rsc, mHal.state.constants[0]);
57    memcpy(p, mConstantColor, 4*sizeof(float));
58    mDirty = true;
59    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
60}
61
62void ProgramFragment::setup(Context *rsc, ProgramFragmentState *state) {
63    if ((state->mLast.get() == this) && !mDirty) {
64        return;
65    }
66    state->mLast.set(this);
67
68    for (uint32_t ct=0; ct < mHal.state.texturesCount; ct++) {
69        if (!mHal.state.textures[ct]) {
70            ALOGE("No texture bound for shader id %u, texture unit %u", (uint)this, ct);
71            rsc->setError(RS_ERROR_BAD_SHADER, "No texture bound");
72            continue;
73        }
74    }
75
76    rsc->mHal.funcs.fragment.setActive(rsc, this);
77}
78
79void ProgramFragment::serialize(Context *rsc, OStream *stream) const {
80}
81
82ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream) {
83    return NULL;
84}
85
86ProgramFragmentState::ProgramFragmentState() {
87    mPF = NULL;
88}
89
90ProgramFragmentState::~ProgramFragmentState() {
91    ObjectBase::checkDelete(mPF);
92    mPF = NULL;
93}
94
95void ProgramFragmentState::init(Context *rsc) {
96    String8 shaderString(RS_SHADER_INTERNAL);
97    shaderString.append("varying lowp vec4 varColor;\n");
98    shaderString.append("varying vec2 varTex0;\n");
99    shaderString.append("void main() {\n");
100    shaderString.append("  lowp vec4 col = UNI_Color;\n");
101    shaderString.append("  gl_FragColor = col;\n");
102    shaderString.append("}\n");
103
104    ObjectBaseRef<const Element> colorElem = Element::createRef(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
105    Element::Builder builder;
106    builder.add(colorElem.get(), "Color", 1);
107    ObjectBaseRef<const Element> constInput = builder.create(rsc);
108
109    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false);
110
111    uint32_t tmp[2];
112    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
113    tmp[1] = (uint32_t)inputType.get();
114
115    Allocation *constAlloc = Allocation::createAllocation(rsc, inputType.get(),
116                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
117    ProgramFragment *pf = new ProgramFragment(rsc, shaderString.string(), shaderString.length(),
118                                              NULL, 0, NULL, tmp, 2);
119    pf->bindAllocation(rsc, constAlloc, 0);
120    pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
121
122    mDefault.set(pf);
123}
124
125void ProgramFragmentState::deinit(Context *rsc) {
126    mDefault.clear();
127    mLast.clear();
128}
129
130namespace android {
131namespace renderscript {
132
133RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc, const char * shaderText,
134                                            size_t shaderLength,
135                                            const char** textureNames,
136                                            size_t textureNamesCount,
137                                            const size_t *textureNamesLength,
138                                            const uint32_t * params, size_t paramLength) {
139    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength,
140                                              textureNames, textureNamesCount, textureNamesLength,
141                                              params, paramLength);
142    pf->incUserRef();
143    //ALOGE("rsi_ProgramFragmentCreate %p", pf);
144    return pf;
145}
146
147}
148}
149
150