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      1 /*
      2  * Copyright (C) 2011-2012 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 <GLES2/gl2.h>
     18 #include <GLES2/gl2ext.h>
     19 
     20 #include <rs_hal.h>
     21 #include <rsContext.h>
     22 #include <rsProgram.h>
     23 
     24 #include "rsdCore.h"
     25 #include "rsdAllocation.h"
     26 #include "rsdShader.h"
     27 #include "rsdShaderCache.h"
     28 
     29 using namespace android;
     30 using namespace android::renderscript;
     31 
     32 RsdShader::RsdShader(const Program *p, uint32_t type,
     33                      const char * shaderText, size_t shaderLength,
     34                      const char** textureNames, size_t textureNamesCount,
     35                      const size_t *textureNamesLength) {
     36     mUserShader.setTo(shaderText, shaderLength);
     37     mRSProgram = p;
     38     mType = type;
     39     initMemberVars();
     40     initAttribAndUniformArray();
     41     init(textureNames, textureNamesCount, textureNamesLength);
     42 
     43     for(size_t i=0; i < textureNamesCount; i++) {
     44         mTextureNames.push(String8(textureNames[i], textureNamesLength[i]));
     45     }
     46 }
     47 
     48 RsdShader::~RsdShader() {
     49     for (uint32_t i = 0; i < mStateBasedShaders.size(); i ++) {
     50         StateBasedKey *state = mStateBasedShaders.itemAt(i);
     51         if (state->mShaderID) {
     52             glDeleteShader(state->mShaderID);
     53         }
     54         delete state;
     55     }
     56 
     57     delete[] mAttribNames;
     58     delete[] mUniformNames;
     59     delete[] mUniformArraySizes;
     60 }
     61 
     62 void RsdShader::initMemberVars() {
     63     mDirty = true;
     64     mAttribCount = 0;
     65     mUniformCount = 0;
     66 
     67     mAttribNames = NULL;
     68     mUniformNames = NULL;
     69     mUniformArraySizes = NULL;
     70     mCurrentState = NULL;
     71 
     72     mIsValid = false;
     73 }
     74 
     75 RsdShader::StateBasedKey *RsdShader::getExistingState() {
     76     RsdShader::StateBasedKey *returnKey = NULL;
     77 
     78     for (uint32_t i = 0; i < mStateBasedShaders.size(); i ++) {
     79         returnKey = mStateBasedShaders.itemAt(i);
     80 
     81         for (uint32_t ct = 0; ct < mRSProgram->mHal.state.texturesCount; ct ++) {
     82             uint32_t texType = 0;
     83             if (mRSProgram->mHal.state.textureTargets[ct] == RS_TEXTURE_2D) {
     84                 Allocation *a = mRSProgram->mHal.state.textures[ct];
     85                 if (a && a->mHal.state.surfaceTextureID) {
     86                     texType = GL_TEXTURE_EXTERNAL_OES;
     87                 } else {
     88                     texType = GL_TEXTURE_2D;
     89                 }
     90             } else {
     91                 texType = GL_TEXTURE_CUBE_MAP;
     92             }
     93             if (texType != returnKey->mTextureTargets[ct]) {
     94                 returnKey = NULL;
     95                 break;
     96             }
     97         }
     98     }
     99     return returnKey;
    100 }
    101 
    102 uint32_t RsdShader::getStateBasedShaderID(const Context *rsc) {
    103     StateBasedKey *state = getExistingState();
    104     if (state != NULL) {
    105         mCurrentState = state;
    106         return mCurrentState->mShaderID;
    107     }
    108     // We have not created a shader for this particular state yet
    109     state = new StateBasedKey(mTextureCount);
    110     mCurrentState = state;
    111     mStateBasedShaders.add(state);
    112     createShader();
    113     loadShader(rsc);
    114     return mCurrentState->mShaderID;
    115 }
    116 
    117 void RsdShader::init(const char** textureNames, size_t textureNamesCount,
    118                      const size_t *textureNamesLength) {
    119     uint32_t attribCount = 0;
    120     uint32_t uniformCount = 0;
    121     for (uint32_t ct=0; ct < mRSProgram->mHal.state.inputElementsCount; ct++) {
    122         initAddUserElement(mRSProgram->mHal.state.inputElements[ct], mAttribNames,
    123                            NULL, &attribCount, RS_SHADER_ATTR);
    124     }
    125     for (uint32_t ct=0; ct < mRSProgram->mHal.state.constantsCount; ct++) {
    126         initAddUserElement(mRSProgram->mHal.state.constantTypes[ct]->getElement(),
    127                            mUniformNames, mUniformArraySizes, &uniformCount, RS_SHADER_UNI);
    128     }
    129 
    130     mTextureUniformIndexStart = uniformCount;
    131     for (uint32_t ct=0; ct < mRSProgram->mHal.state.texturesCount; ct++) {
    132         mUniformNames[uniformCount].setTo("UNI_");
    133         mUniformNames[uniformCount].append(textureNames[ct], textureNamesLength[ct]);
    134         mUniformArraySizes[uniformCount] = 1;
    135         uniformCount++;
    136     }
    137 }
    138 
    139 String8 RsdShader::getGLSLInputString() const {
    140     String8 s;
    141     for (uint32_t ct=0; ct < mRSProgram->mHal.state.inputElementsCount; ct++) {
    142         const Element *e = mRSProgram->mHal.state.inputElements[ct];
    143         for (uint32_t field=0; field < e->mHal.state.fieldsCount; field++) {
    144             const Element *f = e->mHal.state.fields[field];
    145 
    146             // Cannot be complex
    147             rsAssert(!f->mHal.state.fieldsCount);
    148             switch (f->mHal.state.vectorSize) {
    149             case 1: s.append("attribute float ATTRIB_"); break;
    150             case 2: s.append("attribute vec2 ATTRIB_"); break;
    151             case 3: s.append("attribute vec3 ATTRIB_"); break;
    152             case 4: s.append("attribute vec4 ATTRIB_"); break;
    153             default:
    154                 rsAssert(0);
    155             }
    156 
    157             s.append(e->mHal.state.fieldNames[field]);
    158             s.append(";\n");
    159         }
    160     }
    161     return s;
    162 }
    163 
    164 void RsdShader::appendAttributes() {
    165     for (uint32_t ct=0; ct < mRSProgram->mHal.state.inputElementsCount; ct++) {
    166         const Element *e = mRSProgram->mHal.state.inputElements[ct];
    167         for (uint32_t field=0; field < e->mHal.state.fieldsCount; field++) {
    168             const Element *f = e->mHal.state.fields[field];
    169             const char *fn = e->mHal.state.fieldNames[field];
    170 
    171             // Cannot be complex
    172             rsAssert(!f->mHal.state.fieldsCount);
    173             switch (f->mHal.state.vectorSize) {
    174             case 1: mShader.append("attribute float ATTRIB_"); break;
    175             case 2: mShader.append("attribute vec2 ATTRIB_"); break;
    176             case 3: mShader.append("attribute vec3 ATTRIB_"); break;
    177             case 4: mShader.append("attribute vec4 ATTRIB_"); break;
    178             default:
    179                 rsAssert(0);
    180             }
    181 
    182             mShader.append(fn);
    183             mShader.append(";\n");
    184         }
    185     }
    186 }
    187 
    188 void RsdShader::appendTextures() {
    189 
    190     // TODO: this does not yet handle cases where the texture changes between IO
    191     // input and local
    192     bool appendUsing = true;
    193     for (uint32_t ct = 0; ct < mRSProgram->mHal.state.texturesCount; ct ++) {
    194         if (mRSProgram->mHal.state.textureTargets[ct] == RS_TEXTURE_2D) {
    195             Allocation *a = mRSProgram->mHal.state.textures[ct];
    196             if (a && a->mHal.state.surfaceTextureID) {
    197                 if(appendUsing) {
    198                     mShader.append("#extension GL_OES_EGL_image_external : require\n");
    199                     appendUsing = false;
    200                 }
    201                 mShader.append("uniform samplerExternalOES UNI_");
    202                 mCurrentState->mTextureTargets[ct] = GL_TEXTURE_EXTERNAL_OES;
    203             } else {
    204                 mShader.append("uniform sampler2D UNI_");
    205                 mCurrentState->mTextureTargets[ct] = GL_TEXTURE_2D;
    206             }
    207         } else {
    208             mShader.append("uniform samplerCube UNI_");
    209             mCurrentState->mTextureTargets[ct] = GL_TEXTURE_CUBE_MAP;
    210         }
    211 
    212         mShader.append(mTextureNames[ct]);
    213         mShader.append(";\n");
    214     }
    215 }
    216 
    217 bool RsdShader::createShader() {
    218     mShader.clear();
    219     if (mType == GL_FRAGMENT_SHADER) {
    220         mShader.append("precision mediump float;\n");
    221     }
    222     appendUserConstants();
    223     appendAttributes();
    224     appendTextures();
    225     mShader.append(mUserShader);
    226 
    227     return true;
    228 }
    229 
    230 bool RsdShader::loadShader(const Context *rsc) {
    231     mCurrentState->mShaderID = glCreateShader(mType);
    232     rsAssert(mCurrentState->mShaderID);
    233 
    234     if(!mShader.length()) {
    235         createShader();
    236     }
    237 
    238     if (rsc->props.mLogShaders) {
    239         ALOGV("Loading shader type %x, ID %i", mType, mCurrentState->mShaderID);
    240         ALOGV("%s", mShader.string());
    241     }
    242 
    243     if (mCurrentState->mShaderID) {
    244         const char * ss = mShader.string();
    245         RSD_CALL_GL(glShaderSource, mCurrentState->mShaderID, 1, &ss, NULL);
    246         RSD_CALL_GL(glCompileShader, mCurrentState->mShaderID);
    247 
    248         GLint compiled = 0;
    249         RSD_CALL_GL(glGetShaderiv, mCurrentState->mShaderID, GL_COMPILE_STATUS, &compiled);
    250         if (!compiled) {
    251             GLint infoLen = 0;
    252             RSD_CALL_GL(glGetShaderiv, mCurrentState->mShaderID, GL_INFO_LOG_LENGTH, &infoLen);
    253             if (infoLen) {
    254                 char* buf = (char*) malloc(infoLen);
    255                 if (buf) {
    256                     RSD_CALL_GL(glGetShaderInfoLog, mCurrentState->mShaderID, infoLen, NULL, buf);
    257                     rsc->setError(RS_ERROR_FATAL_PROGRAM_LINK, buf);
    258                     free(buf);
    259                 }
    260                 RSD_CALL_GL(glDeleteShader, mCurrentState->mShaderID);
    261                 mCurrentState->mShaderID = 0;
    262                 return false;
    263             }
    264         }
    265     }
    266 
    267     if (rsc->props.mLogShaders) {
    268         ALOGV("--Shader load result %x ", glGetError());
    269     }
    270     mIsValid = true;
    271     return true;
    272 }
    273 
    274 void RsdShader::appendUserConstants() {
    275     for (uint32_t ct=0; ct < mRSProgram->mHal.state.constantsCount; ct++) {
    276         const Element *e = mRSProgram->mHal.state.constantTypes[ct]->getElement();
    277         for (uint32_t field=0; field < e->mHal.state.fieldsCount; field++) {
    278             const Element *f = e->mHal.state.fields[field];
    279             const char *fn = e->mHal.state.fieldNames[field];
    280 
    281             // Cannot be complex
    282             rsAssert(!f->mHal.state.fieldsCount);
    283             if (f->mHal.state.dataType == RS_TYPE_MATRIX_4X4) {
    284                 mShader.append("uniform mat4 UNI_");
    285             } else if (f->mHal.state.dataType == RS_TYPE_MATRIX_3X3) {
    286                 mShader.append("uniform mat3 UNI_");
    287             } else if (f->mHal.state.dataType == RS_TYPE_MATRIX_2X2) {
    288                 mShader.append("uniform mat2 UNI_");
    289             } else {
    290                 switch (f->mHal.state.vectorSize) {
    291                 case 1: mShader.append("uniform float UNI_"); break;
    292                 case 2: mShader.append("uniform vec2 UNI_"); break;
    293                 case 3: mShader.append("uniform vec3 UNI_"); break;
    294                 case 4: mShader.append("uniform vec4 UNI_"); break;
    295                 default:
    296                     rsAssert(0);
    297                 }
    298             }
    299 
    300             mShader.append(fn);
    301             if (e->mHal.state.fieldArraySizes[field] > 1) {
    302                 mShader.appendFormat("[%d]", e->mHal.state.fieldArraySizes[field]);
    303             }
    304             mShader.append(";\n");
    305         }
    306     }
    307 }
    308 
    309 void RsdShader::logUniform(const Element *field, const float *fd, uint32_t arraySize ) {
    310     RsDataType dataType = field->mHal.state.dataType;
    311     uint32_t elementSize = field->mHal.state.elementSizeBytes / sizeof(float);
    312     for (uint32_t i = 0; i < arraySize; i ++) {
    313         if (arraySize > 1) {
    314             ALOGV("Array Element [%u]", i);
    315         }
    316         if (dataType == RS_TYPE_MATRIX_4X4) {
    317             ALOGV("Matrix4x4");
    318             ALOGV("{%f, %f, %f, %f",  fd[0], fd[4], fd[8], fd[12]);
    319             ALOGV(" %f, %f, %f, %f",  fd[1], fd[5], fd[9], fd[13]);
    320             ALOGV(" %f, %f, %f, %f",  fd[2], fd[6], fd[10], fd[14]);
    321             ALOGV(" %f, %f, %f, %f}", fd[3], fd[7], fd[11], fd[15]);
    322         } else if (dataType == RS_TYPE_MATRIX_3X3) {
    323             ALOGV("Matrix3x3");
    324             ALOGV("{%f, %f, %f",  fd[0], fd[3], fd[6]);
    325             ALOGV(" %f, %f, %f",  fd[1], fd[4], fd[7]);
    326             ALOGV(" %f, %f, %f}", fd[2], fd[5], fd[8]);
    327         } else if (dataType == RS_TYPE_MATRIX_2X2) {
    328             ALOGV("Matrix2x2");
    329             ALOGV("{%f, %f",  fd[0], fd[2]);
    330             ALOGV(" %f, %f}", fd[1], fd[3]);
    331         } else {
    332             switch (field->mHal.state.vectorSize) {
    333             case 1:
    334                 ALOGV("Uniform 1 = %f", fd[0]);
    335                 break;
    336             case 2:
    337                 ALOGV("Uniform 2 = %f %f", fd[0], fd[1]);
    338                 break;
    339             case 3:
    340                 ALOGV("Uniform 3 = %f %f %f", fd[0], fd[1], fd[2]);
    341                 break;
    342             case 4:
    343                 ALOGV("Uniform 4 = %f %f %f %f", fd[0], fd[1], fd[2], fd[3]);
    344                 break;
    345             default:
    346                 rsAssert(0);
    347             }
    348         }
    349         ALOGV("Element size %u data=%p", elementSize, fd);
    350         fd += elementSize;
    351         ALOGV("New data=%p", fd);
    352     }
    353 }
    354 
    355 void RsdShader::setUniform(const Context *rsc, const Element *field, const float *fd,
    356                          int32_t slot, uint32_t arraySize ) {
    357     RsDataType dataType = field->mHal.state.dataType;
    358     if (dataType == RS_TYPE_MATRIX_4X4) {
    359         RSD_CALL_GL(glUniformMatrix4fv, slot, arraySize, GL_FALSE, fd);
    360     } else if (dataType == RS_TYPE_MATRIX_3X3) {
    361         RSD_CALL_GL(glUniformMatrix3fv, slot, arraySize, GL_FALSE, fd);
    362     } else if (dataType == RS_TYPE_MATRIX_2X2) {
    363         RSD_CALL_GL(glUniformMatrix2fv, slot, arraySize, GL_FALSE, fd);
    364     } else {
    365         switch (field->mHal.state.vectorSize) {
    366         case 1:
    367             RSD_CALL_GL(glUniform1fv, slot, arraySize, fd);
    368             break;
    369         case 2:
    370             RSD_CALL_GL(glUniform2fv, slot, arraySize, fd);
    371             break;
    372         case 3:
    373             RSD_CALL_GL(glUniform3fv, slot, arraySize, fd);
    374             break;
    375         case 4:
    376             RSD_CALL_GL(glUniform4fv, slot, arraySize, fd);
    377             break;
    378         default:
    379             rsAssert(0);
    380         }
    381     }
    382 }
    383 
    384 void RsdShader::setupSampler(const Context *rsc, const Sampler *s, const Allocation *tex) {
    385     RsdHal *dc = (RsdHal *)rsc->mHal.drv;
    386 
    387     GLenum trans[] = {
    388         GL_NEAREST, //RS_SAMPLER_NEAREST,
    389         GL_LINEAR, //RS_SAMPLER_LINEAR,
    390         GL_LINEAR_MIPMAP_LINEAR, //RS_SAMPLER_LINEAR_MIP_LINEAR,
    391         GL_REPEAT, //RS_SAMPLER_WRAP,
    392         GL_CLAMP_TO_EDGE, //RS_SAMPLER_CLAMP
    393         GL_LINEAR_MIPMAP_NEAREST, //RS_SAMPLER_LINEAR_MIP_NEAREST
    394     };
    395 
    396     GLenum transNP[] = {
    397         GL_NEAREST, //RS_SAMPLER_NEAREST,
    398         GL_LINEAR, //RS_SAMPLER_LINEAR,
    399         GL_LINEAR, //RS_SAMPLER_LINEAR_MIP_LINEAR,
    400         GL_CLAMP_TO_EDGE, //RS_SAMPLER_WRAP,
    401         GL_CLAMP_TO_EDGE, //RS_SAMPLER_CLAMP
    402         GL_LINEAR, //RS_SAMPLER_LINEAR_MIP_NEAREST,
    403     };
    404 
    405     // This tells us the correct texture type
    406     DrvAllocation *drvTex = (DrvAllocation *)tex->mHal.drv;
    407     const GLenum target = drvTex->glTarget;
    408     if (!target) {
    409         // this can happen if the user set the wrong allocation flags.
    410         rsc->setError(RS_ERROR_BAD_VALUE, "Allocation not compatible with sampler");
    411         return;
    412     }
    413 
    414     if (!dc->gl.gl.OES_texture_npot && tex->getType()->getIsNp2()) {
    415         if (tex->getHasGraphicsMipmaps() &&
    416             (dc->gl.gl.NV_texture_npot_2D_mipmap || dc->gl.gl.IMG_texture_npot)) {
    417             if (dc->gl.gl.NV_texture_npot_2D_mipmap) {
    418                 RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    419                             trans[s->mHal.state.minFilter]);
    420             } else {
    421                 switch (trans[s->mHal.state.minFilter]) {
    422                 case GL_LINEAR_MIPMAP_LINEAR:
    423                     RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    424                                 GL_LINEAR_MIPMAP_NEAREST);
    425                     break;
    426                 default:
    427                     RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    428                                 trans[s->mHal.state.minFilter]);
    429                     break;
    430                 }
    431             }
    432         } else {
    433             RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    434                         transNP[s->mHal.state.minFilter]);
    435         }
    436         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MAG_FILTER,
    437                     transNP[s->mHal.state.magFilter]);
    438         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_WRAP_S, transNP[s->mHal.state.wrapS]);
    439         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_WRAP_T, transNP[s->mHal.state.wrapT]);
    440     } else {
    441         if (tex->getHasGraphicsMipmaps()) {
    442             RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    443                         trans[s->mHal.state.minFilter]);
    444         } else {
    445             RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MIN_FILTER,
    446                         transNP[s->mHal.state.minFilter]);
    447         }
    448         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_MAG_FILTER, trans[s->mHal.state.magFilter]);
    449         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_WRAP_S, trans[s->mHal.state.wrapS]);
    450         RSD_CALL_GL(glTexParameteri, target, GL_TEXTURE_WRAP_T, trans[s->mHal.state.wrapT]);
    451     }
    452 
    453     float anisoValue = rsMin(dc->gl.gl.EXT_texture_max_aniso, s->mHal.state.aniso);
    454     if (dc->gl.gl.EXT_texture_max_aniso > 1.0f) {
    455         RSD_CALL_GL(glTexParameterf, target, GL_TEXTURE_MAX_ANISOTROPY_EXT, anisoValue);
    456     }
    457 
    458     rsdGLCheckError(rsc, "Sampler::setup tex env");
    459 }
    460 
    461 void RsdShader::setupTextures(const Context *rsc, RsdShaderCache *sc) {
    462     if (mRSProgram->mHal.state.texturesCount == 0) {
    463         return;
    464     }
    465 
    466     RsdHal *dc = (RsdHal *)rsc->mHal.drv;
    467 
    468     uint32_t numTexturesToBind = mRSProgram->mHal.state.texturesCount;
    469     uint32_t numTexturesAvailable = dc->gl.gl.maxFragmentTextureImageUnits;
    470     if (numTexturesToBind >= numTexturesAvailable) {
    471         ALOGE("Attempting to bind %u textures on shader id %u, but only %u are available",
    472              mRSProgram->mHal.state.texturesCount, (uint32_t)this, numTexturesAvailable);
    473         rsc->setError(RS_ERROR_BAD_SHADER, "Cannot bind more textuers than available");
    474         numTexturesToBind = numTexturesAvailable;
    475     }
    476 
    477     for (uint32_t ct=0; ct < numTexturesToBind; ct++) {
    478         RSD_CALL_GL(glActiveTexture, GL_TEXTURE0 + ct);
    479         RSD_CALL_GL(glUniform1i, sc->fragUniformSlot(mTextureUniformIndexStart + ct), ct);
    480 
    481         if (!mRSProgram->mHal.state.textures[ct]) {
    482             // if nothing is bound, reset to default GL texture
    483             RSD_CALL_GL(glBindTexture, mCurrentState->mTextureTargets[ct], 0);
    484             continue;
    485         }
    486 
    487         DrvAllocation *drvTex = (DrvAllocation *)mRSProgram->mHal.state.textures[ct]->mHal.drv;
    488 
    489         if (mCurrentState->mTextureTargets[ct] != GL_TEXTURE_2D &&
    490             mCurrentState->mTextureTargets[ct] != GL_TEXTURE_CUBE_MAP &&
    491             mCurrentState->mTextureTargets[ct] != GL_TEXTURE_EXTERNAL_OES) {
    492             ALOGE("Attempting to bind unknown texture to shader id %u, texture unit %u",
    493                   (uint)this, ct);
    494             rsc->setError(RS_ERROR_BAD_SHADER, "Non-texture allocation bound to a shader");
    495         }
    496         RSD_CALL_GL(glBindTexture, mCurrentState->mTextureTargets[ct], drvTex->textureID);
    497         rsdGLCheckError(rsc, "ProgramFragment::setup tex bind");
    498         if (mRSProgram->mHal.state.samplers[ct]) {
    499             setupSampler(rsc, mRSProgram->mHal.state.samplers[ct],
    500                          mRSProgram->mHal.state.textures[ct]);
    501         } else {
    502             RSD_CALL_GL(glTexParameteri, mCurrentState->mTextureTargets[ct],
    503                 GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    504             RSD_CALL_GL(glTexParameteri, mCurrentState->mTextureTargets[ct],
    505                 GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    506             RSD_CALL_GL(glTexParameteri, mCurrentState->mTextureTargets[ct],
    507                 GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    508             RSD_CALL_GL(glTexParameteri, mCurrentState->mTextureTargets[ct],
    509                 GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    510             rsdGLCheckError(rsc, "ProgramFragment::setup basic tex env");
    511         }
    512         rsdGLCheckError(rsc, "ProgramFragment::setup uniforms");
    513     }
    514 
    515     RSD_CALL_GL(glActiveTexture, GL_TEXTURE0);
    516     mDirty = false;
    517     rsdGLCheckError(rsc, "ProgramFragment::setup");
    518 }
    519 
    520 void RsdShader::setupUserConstants(const Context *rsc, RsdShaderCache *sc, bool isFragment) {
    521     uint32_t uidx = 0;
    522     for (uint32_t ct=0; ct < mRSProgram->mHal.state.constantsCount; ct++) {
    523         Allocation *alloc = mRSProgram->mHal.state.constants[ct];
    524 
    525         if (!alloc) {
    526             ALOGE("Attempting to set constants on shader id %u, but alloc at slot %u is not set",
    527                  (uint32_t)this, ct);
    528             rsc->setError(RS_ERROR_BAD_SHADER, "No constant allocation bound");
    529             continue;
    530         }
    531 
    532         const uint8_t *data = static_cast<const uint8_t *>(alloc->mHal.drvState.lod[0].mallocPtr);
    533         const Element *e = mRSProgram->mHal.state.constantTypes[ct]->getElement();
    534         for (uint32_t field=0; field < e->mHal.state.fieldsCount; field++) {
    535             const Element *f = e->mHal.state.fields[field];
    536             const char *fieldName = e->mHal.state.fieldNames[field];
    537 
    538             uint32_t offset = e->mHal.state.fieldOffsetBytes[field];
    539             const float *fd = reinterpret_cast<const float *>(&data[offset]);
    540 
    541             int32_t slot = -1;
    542             uint32_t arraySize = 1;
    543             if (!isFragment) {
    544                 slot = sc->vtxUniformSlot(uidx);
    545                 arraySize = sc->vtxUniformSize(uidx);
    546             } else {
    547                 slot = sc->fragUniformSlot(uidx);
    548                 arraySize = sc->fragUniformSize(uidx);
    549             }
    550             if (rsc->props.mLogShadersUniforms) {
    551                 ALOGV("Uniform  slot=%i, offset=%i, constant=%i, field=%i, uidx=%i, name=%s",
    552                      slot, offset, ct, field, uidx, fieldName);
    553             }
    554             uidx ++;
    555             if (slot < 0) {
    556                 continue;
    557             }
    558 
    559             if (rsc->props.mLogShadersUniforms) {
    560                 logUniform(f, fd, arraySize);
    561             }
    562             setUniform(rsc, f, fd, slot, arraySize);
    563         }
    564     }
    565 }
    566 
    567 void RsdShader::setup(const android::renderscript::Context *rsc, RsdShaderCache *sc) {
    568 
    569     setupUserConstants(rsc, sc, mType == GL_FRAGMENT_SHADER);
    570     setupTextures(rsc, sc);
    571 }
    572 
    573 void RsdShader::initAttribAndUniformArray() {
    574     mAttribCount = 0;
    575     for (uint32_t ct=0; ct < mRSProgram->mHal.state.inputElementsCount; ct++) {
    576         const Element *elem = mRSProgram->mHal.state.inputElements[ct];
    577         mAttribCount += elem->mHal.state.fieldsCount;
    578     }
    579 
    580     mUniformCount = 0;
    581     for (uint32_t ct=0; ct < mRSProgram->mHal.state.constantsCount; ct++) {
    582         const Element *elem = mRSProgram->mHal.state.constantTypes[ct]->getElement();
    583         mUniformCount += elem->mHal.state.fieldsCount;
    584     }
    585     mUniformCount += mRSProgram->mHal.state.texturesCount;
    586 
    587     if (mAttribCount) {
    588         mAttribNames = new String8[mAttribCount];
    589     }
    590     if (mUniformCount) {
    591         mUniformNames = new String8[mUniformCount];
    592         mUniformArraySizes = new uint32_t[mUniformCount];
    593     }
    594 
    595     mTextureCount = mRSProgram->mHal.state.texturesCount;
    596 }
    597 
    598 void RsdShader::initAddUserElement(const Element *e, String8 *names, uint32_t *arrayLengths,
    599                                    uint32_t *count, const char *prefix) {
    600     rsAssert(e->mHal.state.fieldsCount);
    601     for (uint32_t ct=0; ct < e->mHal.state.fieldsCount; ct++) {
    602         const Element *ce = e->mHal.state.fields[ct];
    603         if (ce->mHal.state.fieldsCount) {
    604             initAddUserElement(ce, names, arrayLengths, count, prefix);
    605         } else {
    606             String8 tmp(prefix);
    607             tmp.append(e->mHal.state.fieldNames[ct]);
    608             names[*count].setTo(tmp.string());
    609             if (arrayLengths) {
    610                 arrayLengths[*count] = e->mHal.state.fieldArraySizes[ct];
    611             }
    612             (*count)++;
    613         }
    614     }
    615 }
    616