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 
20 #include <inttypes.h>
21 
22 namespace android {
23 namespace renderscript {
24 
ProgramFragment(Context * rsc,const char * shaderText,size_t shaderLength,const char ** textureNames,size_t textureNamesCount,const size_t * textureNamesLength,const uintptr_t * params,size_t paramLength)25 ProgramFragment::ProgramFragment(Context *rsc, const char * shaderText, size_t shaderLength,
26                                  const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
27                                  const uintptr_t * params, size_t paramLength)
28     : Program(rsc, shaderText, shaderLength, params, paramLength) {
29     mConstantColor[0] = 1.f;
30     mConstantColor[1] = 1.f;
31     mConstantColor[2] = 1.f;
32     mConstantColor[3] = 1.f;
33 
34     mRSC->mHal.funcs.fragment.init(mRSC, this, mUserShader, mUserShaderLen,
35                                    textureNames, textureNamesCount, textureNamesLength);
36 }
37 
~ProgramFragment()38 ProgramFragment::~ProgramFragment() {
39     mRSC->mHal.funcs.fragment.destroy(mRSC, this);
40 }
41 
setConstantColor(Context * rsc,float r,float g,float b,float a)42 void ProgramFragment::setConstantColor(Context *rsc, float r, float g, float b, float a) {
43     if (isUserProgram()) {
44         ALOGE("Attempting to set fixed function emulation color on user program");
45         rsc->setError(RS_ERROR_BAD_SHADER, "Cannot  set fixed function emulation color on user program");
46         return;
47     }
48     if (mHal.state.constants[0] == nullptr) {
49         ALOGE("Unable to set fixed function emulation color because allocation is missing");
50         rsc->setError(RS_ERROR_BAD_SHADER, "Unable to set fixed function emulation color because allocation is missing");
51         return;
52     }
53     mConstantColor[0] = r;
54     mConstantColor[1] = g;
55     mConstantColor[2] = b;
56     mConstantColor[3] = a;
57     void *p = rsc->mHal.funcs.allocation.lock1D(rsc, mHal.state.constants[0]);
58     memcpy(p, mConstantColor, 4*sizeof(float));
59     mDirty = true;
60     rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
61 }
62 
setup(Context * rsc,ProgramFragmentState * state)63 void ProgramFragment::setup(Context *rsc, ProgramFragmentState *state) {
64     if ((state->mLast.get() == this) && !mDirty) {
65         return;
66     }
67     state->mLast.set(this);
68 
69     for (uint32_t ct=0; ct < mHal.state.texturesCount; ct++) {
70         if (!mHal.state.textures[ct]) {
71             ALOGE("No texture bound for shader id %" PRIuPTR ", texture unit %u", (uintptr_t)this, ct);
72             rsc->setError(RS_ERROR_BAD_SHADER, "No texture bound");
73             continue;
74         }
75     }
76 
77     rsc->mHal.funcs.fragment.setActive(rsc, this);
78 }
79 
serialize(Context * rsc,OStream * stream) const80 void ProgramFragment::serialize(Context *rsc, OStream *stream) const {
81 }
82 
createFromStream(Context * rsc,IStream * stream)83 ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream) {
84     return nullptr;
85 }
86 
ProgramFragmentState()87 ProgramFragmentState::ProgramFragmentState() {
88     mPF = nullptr;
89 }
90 
~ProgramFragmentState()91 ProgramFragmentState::~ProgramFragmentState() {
92     ObjectBase::checkDelete(mPF);
93     mPF = nullptr;
94 }
95 
init(Context * rsc)96 void ProgramFragmentState::init(Context *rsc) {
97     const char *shaderString =
98             RS_SHADER_INTERNAL
99             "varying lowp vec4 varColor;\n"
100             "varying vec2 varTex0;\n"
101             "void main() {\n"
102             "  lowp vec4 col = UNI_Color;\n"
103             "  gl_FragColor = col;\n"
104             "}\n";
105 
106     ObjectBaseRef<const Element> colorElem = Element::createRef(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
107 
108     const char *enames[] = { "Color" };
109     const Element *eins[] = {colorElem.get()};
110     ObjectBaseRef<const Element> constInput = Element::create(rsc, 1, eins, enames);
111 
112     ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1);
113 
114     uintptr_t tmp[2];
115     tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
116     tmp[1] = (uintptr_t)inputType.get();
117 
118     Allocation *constAlloc = Allocation::createAllocation(rsc, inputType.get(),
119                               RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
120     ProgramFragment *pf = new ProgramFragment(rsc, shaderString, strlen(shaderString),
121                                               nullptr, 0, nullptr, tmp, 2);
122     pf->bindAllocation(rsc, constAlloc, 0);
123     pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
124 
125     mDefault.set(pf);
126 }
127 
deinit(Context * rsc)128 void ProgramFragmentState::deinit(Context *rsc) {
129     mDefault.clear();
130     mLast.clear();
131 }
132 
rsi_ProgramFragmentCreate(Context * rsc,const char * shaderText,size_t shaderLength,const char ** textureNames,size_t textureNamesCount,const size_t * textureNamesLength,const uintptr_t * params,size_t paramLength)133 RsProgramFragment 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 uintptr_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 } // namespace renderscript
148 } // namespace android
149