1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "GrProcOptInfo.h" 9 10 #include "GrGeometryProcessor.h" 11 12 #include "batches/GrDrawBatch.h" 13 14 void GrProcOptInfo::calcWithInitialValues(const GrFragmentProcessor * const processors[], 15 int cnt, 16 GrColor startColor, 17 GrColorComponentFlags flags, 18 bool areCoverageStages, 19 bool isLCD) { 20 GrInitInvariantOutput out; 21 out.fIsSingleComponent = areCoverageStages; 22 out.fColor = startColor; 23 out.fValidFlags = flags; 24 out.fIsLCDCoverage = isLCD; 25 fInOut.reset(out); 26 this->internalCalc(processors, cnt, false); 27 } 28 29 void GrProcOptInfo::initUsingInvariantOutput(GrInitInvariantOutput invOutput) { 30 fInOut.reset(invOutput); 31 } 32 33 void GrProcOptInfo::completeCalculations(const GrFragmentProcessor * const processors[], int cnt) { 34 this->internalCalc(processors, cnt, false); 35 } 36 37 void GrProcOptInfo::internalCalc(const GrFragmentProcessor* const processors[], 38 int cnt, 39 bool initWillReadFragmentPosition) { 40 fFirstEffectiveProcessorIndex = 0; 41 fInputColorIsUsed = true; 42 fInputColor = fInOut.color(); 43 fReadsFragPosition = initWillReadFragmentPosition; 44 45 for (int i = 0; i < cnt; ++i) { 46 const GrFragmentProcessor* processor = processors[i]; 47 fInOut.resetWillUseInputColor(); 48 processor->computeInvariantOutput(&fInOut); 49 SkDEBUGCODE(fInOut.validate()); 50 if (!fInOut.willUseInputColor()) { 51 fFirstEffectiveProcessorIndex = i; 52 fInputColorIsUsed = false; 53 // Reset these since we don't care if previous stages read these values 54 fReadsFragPosition = initWillReadFragmentPosition; 55 } 56 if (processor->willReadFragmentPosition()) { 57 fReadsFragPosition = true; 58 } 59 if (kRGBA_GrColorComponentFlags == fInOut.validFlags()) { 60 fFirstEffectiveProcessorIndex = i + 1; 61 fInputColor = fInOut.color(); 62 fInputColorIsUsed = true; 63 // Since we are clearing all previous color stages we are in a state where we have found 64 // zero stages that don't multiply the inputColor. 65 fInOut.resetNonMulStageFound(); 66 // Reset these since we don't care if previous stages read these values 67 fReadsFragPosition = initWillReadFragmentPosition; 68 } 69 } 70 } 71
