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      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 #include "rsContext.h"
     18 #include "rsProgramVertex.h"
     19 #include "rsMatrix4x4.h"
     20 
     21 using namespace android;
     22 using namespace android::renderscript;
     23 
     24 
     25 ProgramVertex::ProgramVertex(Context *rsc, const char * shaderText, size_t shaderLength,
     26                              const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
     27 
     28                              const uint32_t * params, size_t paramLength)
     29     : Program(rsc, shaderText, shaderLength, params, paramLength) {
     30     mRSC->mHal.funcs.vertex.init(mRSC, this, mUserShader.string(), mUserShader.length(),
     31                                  textureNames, textureNamesCount, textureNamesLength);
     32 }
     33 
     34 ProgramVertex::~ProgramVertex() {
     35     mRSC->mHal.funcs.vertex.destroy(mRSC, this);
     36 }
     37 
     38 void ProgramVertex::setup(Context *rsc, ProgramVertexState *state) {
     39     if ((state->mLast.get() == this) && !mDirty) {
     40         return;
     41     }
     42 
     43     if (!isUserProgram()) {
     44         if (mHal.state.constants[0] == NULL) {
     45             rsc->setError(RS_ERROR_FATAL_UNKNOWN,
     46                           "Unable to set fixed function emulation matrices because allocation is missing");
     47             return;
     48         }
     49         float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
     50         Matrix4x4 mvp;
     51         mvp.load(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
     52         Matrix4x4 t;
     53         t.load(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET]);
     54         mvp.multiply(&t);
     55         for (uint32_t i = 0; i < 16; i ++) {
     56             f[RS_PROGRAM_VERTEX_MVP_OFFSET + i] = mvp.m[i];
     57         }
     58     }
     59 
     60     state->mLast.set(this);
     61 
     62     rsc->mHal.funcs.vertex.setActive(rsc, this);
     63 }
     64 
     65 void ProgramVertex::setProjectionMatrix(Context *rsc, const rsc_Matrix *m) const {
     66     if (isUserProgram()) {
     67         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
     68                       "Attempting to set fixed function emulation matrix projection on user program");
     69         return;
     70     }
     71     if (mHal.state.constants[0] == NULL) {
     72         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
     73                       "Unable to set fixed function emulation matrix projection because allocation is missing");
     74         return;
     75     }
     76     float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
     77     memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m, sizeof(rsc_Matrix));
     78     mDirty = true;
     79 }
     80 
     81 void ProgramVertex::setModelviewMatrix(Context *rsc, const rsc_Matrix *m) const {
     82     if (isUserProgram()) {
     83         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
     84                       "Attempting to set fixed function emulation matrix modelview on user program");
     85         return;
     86     }
     87     if (mHal.state.constants[0] == NULL) {
     88         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
     89                       "Unable to set fixed function emulation matrix modelview because allocation is missing");
     90         return;
     91     }
     92     float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
     93     memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m, sizeof(rsc_Matrix));
     94     mDirty = true;
     95 }
     96 
     97 void ProgramVertex::setTextureMatrix(Context *rsc, const rsc_Matrix *m) const {
     98     if (isUserProgram()) {
     99         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
    100                       "Attempting to set fixed function emulation matrix texture on user program");
    101         return;
    102     }
    103     if (mHal.state.constants[0] == NULL) {
    104         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
    105                       "Unable to set fixed function emulation matrix texture because allocation is missing");
    106         return;
    107     }
    108     float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
    109     memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m, sizeof(rsc_Matrix));
    110     mDirty = true;
    111 }
    112 
    113 void ProgramVertex::getProjectionMatrix(Context *rsc, rsc_Matrix *m) const {
    114     if (isUserProgram()) {
    115         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
    116                       "Attempting to get fixed function emulation matrix projection on user program");
    117         return;
    118     }
    119     if (mHal.state.constants[0] == NULL) {
    120         rsc->setError(RS_ERROR_FATAL_UNKNOWN,
    121                       "Unable to get fixed function emulation matrix projection because allocation is missing");
    122         return;
    123     }
    124     float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
    125     memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
    126 }
    127 
    128 void ProgramVertex::transformToScreen(Context *rsc, float *v4out, const float *v3in) const {
    129     if (isUserProgram()) {
    130         return;
    131     }
    132     float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
    133     Matrix4x4 mvp;
    134     mvp.loadMultiply((Matrix4x4 *)&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET],
    135                      (Matrix4x4 *)&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
    136     mvp.vectorMultiply(v4out, v3in);
    137 }
    138 
    139 void ProgramVertex::serialize(OStream *stream) const {
    140 }
    141 
    142 ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {
    143     return NULL;
    144 }
    145 
    146 
    147 ///////////////////////////////////////////////////////////////////////
    148 
    149 ProgramVertexState::ProgramVertexState() {
    150 }
    151 
    152 ProgramVertexState::~ProgramVertexState() {
    153 }
    154 
    155 void ProgramVertexState::init(Context *rsc) {
    156     ObjectBaseRef<const Element> matrixElem = Element::createRef(rsc, RS_TYPE_MATRIX_4X4,
    157                                                                  RS_KIND_USER, false, 1);
    158     ObjectBaseRef<const Element> f2Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
    159                                                              RS_KIND_USER, false, 2);
    160     ObjectBaseRef<const Element> f3Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
    161                                                              RS_KIND_USER, false, 3);
    162     ObjectBaseRef<const Element> f4Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
    163                                                              RS_KIND_USER, false, 4);
    164 
    165     Element::Builder constBuilder;
    166     constBuilder.add(matrixElem.get(), "MV", 1);
    167     constBuilder.add(matrixElem.get(), "P", 1);
    168     constBuilder.add(matrixElem.get(), "TexMatrix", 1);
    169     constBuilder.add(matrixElem.get(), "MVP", 1);
    170     ObjectBaseRef<const Element> constInput = constBuilder.create(rsc);
    171 
    172     Element::Builder inputBuilder;
    173     inputBuilder.add(f4Elem.get(), "position", 1);
    174     inputBuilder.add(f4Elem.get(), "color", 1);
    175     inputBuilder.add(f3Elem.get(), "normal", 1);
    176     inputBuilder.add(f2Elem.get(), "texture0", 1);
    177     ObjectBaseRef<const Element> attrElem = inputBuilder.create(rsc);
    178 
    179     ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false);
    180 
    181     String8 shaderString(RS_SHADER_INTERNAL);
    182     shaderString.append("varying vec4 varColor;\n");
    183     shaderString.append("varying vec2 varTex0;\n");
    184     shaderString.append("void main() {\n");
    185     shaderString.append("  gl_Position = UNI_MVP * ATTRIB_position;\n");
    186     shaderString.append("  gl_PointSize = 1.0;\n");
    187     shaderString.append("  varColor = ATTRIB_color;\n");
    188     shaderString.append("  varTex0 = ATTRIB_texture0;\n");
    189     shaderString.append("}\n");
    190 
    191     uint32_t tmp[4];
    192     tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
    193     tmp[1] = (uint32_t)inputType.get();
    194     tmp[2] = RS_PROGRAM_PARAM_INPUT;
    195     tmp[3] = (uint32_t)attrElem.get();
    196 
    197     ProgramVertex *pv = new ProgramVertex(rsc, shaderString.string(), shaderString.length(),
    198                                           NULL, 0, NULL, tmp, 4);
    199     Allocation *alloc = Allocation::createAllocation(rsc, inputType.get(),
    200                               RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
    201     pv->bindAllocation(rsc, alloc, 0);
    202 
    203     mDefaultAlloc.set(alloc);
    204     mDefault.set(pv);
    205 
    206     updateSize(rsc);
    207 }
    208 
    209 void ProgramVertexState::updateSize(Context *rsc) {
    210     float *f = static_cast<float *>(mDefaultAlloc->getPtr());
    211 
    212     float surfaceWidth = (float)rsc->getCurrentSurfaceWidth();
    213     float surfaceHeight = (float)rsc->getCurrentSurfaceHeight();
    214 
    215     Matrix4x4 m;
    216     m.loadOrtho(0, surfaceWidth, surfaceHeight, 0, -1, 1);
    217     memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m.m, sizeof(m));
    218     memcpy(&f[RS_PROGRAM_VERTEX_MVP_OFFSET], m.m, sizeof(m));
    219 
    220     m.loadIdentity();
    221     memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m.m, sizeof(m));
    222     memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m.m, sizeof(m));
    223 }
    224 
    225 void ProgramVertexState::deinit(Context *rsc) {
    226     mDefaultAlloc.clear();
    227     mDefault.clear();
    228     mLast.clear();
    229 }
    230 
    231 
    232 namespace android {
    233 namespace renderscript {
    234 
    235 RsProgramVertex rsi_ProgramVertexCreate(Context *rsc, const char * shaderText, size_t shaderLength,
    236                                         const char** textureNames, size_t textureNamesCount,
    237                                         const size_t *textureNamesLength,
    238                                         const uint32_t * params, size_t paramLength) {
    239     ProgramVertex *pv = new ProgramVertex(rsc, shaderText, shaderLength,
    240                                           textureNames, textureNamesCount, textureNamesLength,
    241                                           params, paramLength);
    242     pv->incUserRef();
    243     return pv;
    244 }
    245 
    246 }
    247 }
    248