rsProgramFragment.cpp revision f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2d 
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, mUserShaderLen,
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    const char *shaderString =
97            RS_SHADER_INTERNAL
98            "varying lowp vec4 varColor;\n"
99            "varying vec2 varTex0;\n"
100            "void main() {\n"
101            "  lowp vec4 col = UNI_Color;\n"
102            "  gl_FragColor = col;\n"
103            "}\n";
104
105    ObjectBaseRef<const Element> colorElem = Element::createRef(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
106
107    const char *enames[] = { "Color" };
108    const Element *eins[] = {colorElem.get()};
109    ObjectBaseRef<const Element> constInput = Element::create(rsc, 1, eins, enames);
110
111    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false, 0);
112
113    uint32_t tmp[2];
114    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
115    tmp[1] = (uint32_t)inputType.get();
116
117    Allocation *constAlloc = Allocation::createAllocation(rsc, inputType.get(),
118                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
119    ProgramFragment *pf = new ProgramFragment(rsc, shaderString, strlen(shaderString),
120                                              NULL, 0, NULL, tmp, 2);
121    pf->bindAllocation(rsc, constAlloc, 0);
122    pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
123
124    mDefault.set(pf);
125}
126
127void ProgramFragmentState::deinit(Context *rsc) {
128    mDefault.clear();
129    mLast.clear();
130}
131
132namespace android {
133namespace renderscript {
134
135RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc, const char * shaderText,
136                                            size_t shaderLength,
137                                            const char** textureNames,
138                                            size_t textureNamesCount,
139                                            const size_t *textureNamesLength,
140                                            const uint32_t * params, size_t paramLength) {
141    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength,
142                                              textureNames, textureNamesCount, textureNamesLength,
143                                              params, paramLength);
144    pf->incUserRef();
145    //ALOGE("rsi_ProgramFragmentCreate %p", pf);
146    return pf;
147}
148
149}
150}
151
152