rsProgramFragment.cpp revision 748eb07e805b93c2bf79340d4937963ab739d17c 
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    memcpy(mHal.state.constants[0]->getPtr(), mConstantColor, 4*sizeof(float));
57    mDirty = true;
58}
59
60void ProgramFragment::setup(Context *rsc, ProgramFragmentState *state) {
61    if ((state->mLast.get() == this) && !mDirty) {
62        return;
63    }
64    state->mLast.set(this);
65
66    for (uint32_t ct=0; ct < mHal.state.texturesCount; ct++) {
67        if (!mHal.state.textures[ct]) {
68            ALOGE("No texture bound for shader id %u, texture unit %u", (uint)this, ct);
69            rsc->setError(RS_ERROR_BAD_SHADER, "No texture bound");
70            continue;
71        }
72    }
73
74    rsc->mHal.funcs.fragment.setActive(rsc, this);
75}
76
77void ProgramFragment::serialize(OStream *stream) const {
78}
79
80ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream) {
81    return NULL;
82}
83
84ProgramFragmentState::ProgramFragmentState() {
85    mPF = NULL;
86}
87
88ProgramFragmentState::~ProgramFragmentState() {
89    ObjectBase::checkDelete(mPF);
90    mPF = NULL;
91}
92
93void ProgramFragmentState::init(Context *rsc) {
94    String8 shaderString(RS_SHADER_INTERNAL);
95    shaderString.append("varying lowp vec4 varColor;\n");
96    shaderString.append("varying vec2 varTex0;\n");
97    shaderString.append("void main() {\n");
98    shaderString.append("  lowp vec4 col = UNI_Color;\n");
99    shaderString.append("  gl_FragColor = col;\n");
100    shaderString.append("}\n");
101
102    ObjectBaseRef<const Element> colorElem = Element::createRef(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
103    Element::Builder builder;
104    builder.add(colorElem.get(), "Color", 1);
105    ObjectBaseRef<const Element> constInput = builder.create(rsc);
106
107    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false);
108
109    uint32_t tmp[2];
110    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
111    tmp[1] = (uint32_t)inputType.get();
112
113    Allocation *constAlloc = Allocation::createAllocation(rsc, inputType.get(),
114                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
115    ProgramFragment *pf = new ProgramFragment(rsc, shaderString.string(), shaderString.length(),
116                                              NULL, 0, NULL, tmp, 2);
117    pf->bindAllocation(rsc, constAlloc, 0);
118    pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
119
120    mDefault.set(pf);
121}
122
123void ProgramFragmentState::deinit(Context *rsc) {
124    mDefault.clear();
125    mLast.clear();
126}
127
128namespace android {
129namespace renderscript {
130
131RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc, const char * shaderText,
132                                            size_t shaderLength,
133                                            const char** textureNames,
134                                            size_t textureNamesCount,
135                                            const size_t *textureNamesLength,
136                                            const uint32_t * params, size_t paramLength) {
137    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength,
138                                              textureNames, textureNamesCount, textureNamesLength,
139                                              params, paramLength);
140    pf->incUserRef();
141    //ALOGE("rsi_ProgramFragmentCreate %p", pf);
142    return pf;
143}
144
145}
146}
147
148