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      1 /*
      2  * Copyright 2015 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 "GrPipeline.h"
      9 
     10 #include "GrAppliedClip.h"
     11 #include "GrCaps.h"
     12 #include "GrGpu.h"
     13 #include "GrRenderTargetContext.h"
     14 #include "GrRenderTargetOpList.h"
     15 #include "GrXferProcessor.h"
     16 
     17 #include "ops/GrOp.h"
     18 
     19 GrPipeline::GrPipeline(const InitArgs& args, GrProcessorSet&& processors,
     20                        GrAppliedClip&& appliedClip) {
     21     SkASSERT(args.fProxy);
     22     SkASSERT(processors.isFinalized());
     23 
     24     fProxy.reset(args.fProxy);
     25 
     26     fFlags = args.fFlags;
     27     fScissorState = appliedClip.scissorState();
     28     if (appliedClip.hasStencilClip()) {
     29         fFlags |= kHasStencilClip_Flag;
     30     }
     31     fWindowRectsState = appliedClip.windowRectsState();
     32     if (!args.fUserStencil->isDisabled(fFlags & kHasStencilClip_Flag)) {
     33         fFlags |= kStencilEnabled_Flag;
     34     }
     35 
     36     fUserStencilSettings = args.fUserStencil;
     37 
     38     fXferProcessor = processors.refXferProcessor();
     39 
     40     if (args.fDstProxy.proxy()) {
     41         if (!args.fDstProxy.proxy()->instantiate(args.fResourceProvider)) {
     42             this->markAsBad();
     43         }
     44 
     45         fDstTextureProxy.reset(args.fDstProxy.proxy());
     46         fDstTextureOffset = args.fDstProxy.offset();
     47     }
     48 
     49     // Copy GrFragmentProcessors from GrProcessorSet to Pipeline
     50     fNumColorProcessors = processors.numColorFragmentProcessors();
     51     int numTotalProcessors = fNumColorProcessors +
     52                              processors.numCoverageFragmentProcessors() +
     53                              appliedClip.numClipCoverageFragmentProcessors();
     54     fFragmentProcessors.reset(numTotalProcessors);
     55     int currFPIdx = 0;
     56     for (int i = 0; i < processors.numColorFragmentProcessors(); ++i, ++currFPIdx) {
     57         fFragmentProcessors[currFPIdx] = processors.detachColorFragmentProcessor(i);
     58         if (!fFragmentProcessors[currFPIdx]->instantiate(args.fResourceProvider)) {
     59             this->markAsBad();
     60         }
     61     }
     62     for (int i = 0; i < processors.numCoverageFragmentProcessors(); ++i, ++currFPIdx) {
     63         fFragmentProcessors[currFPIdx] = processors.detachCoverageFragmentProcessor(i);
     64         if (!fFragmentProcessors[currFPIdx]->instantiate(args.fResourceProvider)) {
     65             this->markAsBad();
     66         }
     67     }
     68     for (int i = 0; i < appliedClip.numClipCoverageFragmentProcessors(); ++i, ++currFPIdx) {
     69         fFragmentProcessors[currFPIdx] = appliedClip.detachClipCoverageFragmentProcessor(i);
     70         if (!fFragmentProcessors[currFPIdx]->instantiate(args.fResourceProvider)) {
     71             this->markAsBad();
     72         }
     73     }
     74 }
     75 
     76 void GrPipeline::addDependenciesTo(GrOpList* opList, const GrCaps& caps) const {
     77     for (int i = 0; i < fFragmentProcessors.count(); ++i) {
     78         GrFragmentProcessor::TextureAccessIter iter(fFragmentProcessors[i].get());
     79         while (const GrResourceIOProcessor::TextureSampler* sampler = iter.next()) {
     80             opList->addDependency(sampler->proxy(), caps);
     81         }
     82     }
     83 
     84     if (fDstTextureProxy) {
     85         opList->addDependency(fDstTextureProxy.get(), caps);
     86     }
     87 
     88 }
     89 
     90 GrXferBarrierType GrPipeline::xferBarrierType(const GrCaps& caps) const {
     91     if (fDstTextureProxy.get() &&
     92         fDstTextureProxy.get()->priv().peekTexture() == fProxy.get()->priv().peekTexture()) {
     93         return kTexture_GrXferBarrierType;
     94     }
     95     return this->getXferProcessor().xferBarrierType(caps);
     96 }
     97 
     98 GrPipeline::GrPipeline(GrRenderTargetProxy* proxy, ScissorState scissorState, SkBlendMode blendmode)
     99         : fProxy(proxy)
    100         , fScissorState()
    101         , fWindowRectsState()
    102         , fUserStencilSettings(&GrUserStencilSettings::kUnused)
    103         , fFlags()
    104         , fXferProcessor(GrPorterDuffXPFactory::MakeNoCoverageXP(blendmode))
    105         , fFragmentProcessors()
    106         , fNumColorProcessors(0) {
    107     SkASSERT(proxy);
    108     if (ScissorState::kEnabled == scissorState) {
    109         fScissorState.set({0, 0, 0, 0}); // caller will use the DynamicState struct.
    110     }
    111 }
    112