bool GrDrawingManager::ProgramUnitTest(GrContext* context, GrDrawTarget* drawTarget, int maxStages) { GrDrawingManager* drawingManager = context->drawingManager(); // setup dummy textures GrSurfaceDesc dummyDesc; dummyDesc.fFlags = kRenderTarget_GrSurfaceFlag; dummyDesc.fConfig = kSkia8888_GrPixelConfig; dummyDesc.fWidth = 34; dummyDesc.fHeight = 18; SkAutoTUnref<GrTexture> dummyTexture1( context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0)); dummyDesc.fFlags = kNone_GrSurfaceFlags; dummyDesc.fConfig = kAlpha_8_GrPixelConfig; dummyDesc.fWidth = 16; dummyDesc.fHeight = 22; SkAutoTUnref<GrTexture> dummyTexture2( context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0)); if (!dummyTexture1 || ! dummyTexture2) { SkDebugf("Could not allocate dummy textures"); return false; } GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()}; // dummy scissor state GrScissorState scissor; // wide open clip GrClip clip; SkRandom random; static const int NUM_TESTS = 2048; for (int t = 0; t < NUM_TESTS; t++) { // setup random render target(can fail) SkAutoTUnref<GrRenderTarget> rt(random_render_target( context->textureProvider(), &random, context->caps())); if (!rt.get()) { SkDebugf("Could not allocate render target"); return false; } GrPipelineBuilder pipelineBuilder; pipelineBuilder.setRenderTarget(rt.get()); pipelineBuilder.setClip(clip); SkAutoTUnref<GrDrawBatch> batch(GrRandomDrawBatch(&random, context)); SkASSERT(batch); GrProcessorTestData ptd(&random, context, context->caps(), dummyTextures); set_random_color_coverage_stages(&pipelineBuilder, &ptd, maxStages); set_random_xpf(&pipelineBuilder, &ptd); set_random_state(&pipelineBuilder, &random); set_random_stencil(&pipelineBuilder, &random); drawTarget->drawBatch(pipelineBuilder, batch); } // Flush everything, test passes if flush is successful(ie, no asserts are hit, no crashes) drawingManager->flush(); // Validate that GrFPs work correctly without an input. GrSurfaceDesc rtDesc; rtDesc.fWidth = kRenderTargetWidth; rtDesc.fHeight = kRenderTargetHeight; rtDesc.fFlags = kRenderTarget_GrSurfaceFlag; rtDesc.fConfig = kRGBA_8888_GrPixelConfig; SkAutoTUnref<GrRenderTarget> rt( context->textureProvider()->createTexture(rtDesc, false)->asRenderTarget()); int fpFactoryCnt = GrProcessorTestFactory<GrFragmentProcessor>::Count(); for (int i = 0; i < fpFactoryCnt; ++i) { // Since FP factories internally randomize, call each 10 times. for (int j = 0; j < 10; ++j) { SkAutoTUnref<GrDrawBatch> batch(GrRandomDrawBatch(&random, context)); SkASSERT(batch); GrProcessorTestData ptd(&random, context, context->caps(), dummyTextures); GrPipelineBuilder builder; builder.setXPFactory(GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref(); builder.setRenderTarget(rt); builder.setClip(clip); SkAutoTUnref<const GrFragmentProcessor> fp( GrProcessorTestFactory<GrFragmentProcessor>::CreateIdx(i, &ptd)); SkAutoTUnref<const GrFragmentProcessor> blockFP( BlockInputFragmentProcessor::Create(fp)); builder.addColorFragmentProcessor(blockFP); drawTarget->drawBatch(builder, batch); drawingManager->flush(); } } return true; }
GrTexture* GrClipMaskManager::createAlphaClipMask(int32_t elementsGenID, GrReducedClip::InitialState initialState, const GrReducedClip::ElementList& elements, const SkVector& clipToMaskOffset, const SkIRect& clipSpaceIBounds) { GrResourceProvider* resourceProvider = fDrawTarget->cmmAccess().resourceProvider(); GrUniqueKey key; GetClipMaskKey(elementsGenID, clipSpaceIBounds, &key); if (GrTexture* texture = resourceProvider->findAndRefTextureByUniqueKey(key)) { return texture; } SkAutoTUnref<GrTexture> texture(this->createCachedMask( clipSpaceIBounds.width(), clipSpaceIBounds.height(), key, true)); // There's no texture in the cache. Let's try to allocate it then. if (!texture) { return nullptr; } // Set the matrix so that rendered clip elements are transformed to mask space from clip // space. SkMatrix translate; translate.setTranslate(clipToMaskOffset); // The texture may be larger than necessary, this rect represents the part of the texture // we populate with a rasterization of the clip. SkIRect maskSpaceIBounds = SkIRect::MakeWH(clipSpaceIBounds.width(), clipSpaceIBounds.height()); // The scratch texture that we are drawing into can be substantially larger than the mask. Only // clear the part that we care about. fDrawTarget->clear(&maskSpaceIBounds, GrReducedClip::kAllIn_InitialState == initialState ? 0xffffffff : 0x00000000, true, texture->asRenderTarget()); // When we use the stencil in the below loop it is important to have this clip installed. // The second pass that zeros the stencil buffer renders the rect maskSpaceIBounds so the first // pass must not set values outside of this bounds or stencil values outside the rect won't be // cleared. GrClip clip(maskSpaceIBounds); SkAutoTUnref<GrTexture> temp; // walk through each clip element and perform its set op for (GrReducedClip::ElementList::Iter iter = elements.headIter(); iter.get(); iter.next()) { const Element* element = iter.get(); SkRegion::Op op = element->getOp(); bool invert = element->isInverseFilled(); if (invert || SkRegion::kIntersect_Op == op || SkRegion::kReverseDifference_Op == op) { GrPipelineBuilder pipelineBuilder; pipelineBuilder.setClip(clip); GrPathRenderer* pr = nullptr; bool useTemp = !this->canStencilAndDrawElement(&pipelineBuilder, texture, &pr, element); GrTexture* dst; // This is the bounds of the clip element in the space of the alpha-mask. The temporary // mask buffer can be substantially larger than the actually clip stack element. We // touch the minimum number of pixels necessary and use decal mode to combine it with // the accumulator. SkIRect maskSpaceElementIBounds; if (useTemp) { if (invert) { maskSpaceElementIBounds = maskSpaceIBounds; } else { SkRect elementBounds = element->getBounds(); elementBounds.offset(clipToMaskOffset); elementBounds.roundOut(&maskSpaceElementIBounds); } if (!temp) { temp.reset(this->createTempMask(maskSpaceIBounds.fRight, maskSpaceIBounds.fBottom)); if (!temp) { texture->resourcePriv().removeUniqueKey(); return nullptr; } } dst = temp; // clear the temp target and set blend to replace fDrawTarget->clear(&maskSpaceElementIBounds, invert ? 0xffffffff : 0x00000000, true, dst->asRenderTarget()); set_coverage_drawing_xpf(SkRegion::kReplace_Op, invert, &pipelineBuilder); } else { // draw directly into the result with the stencil set to make the pixels affected // by the clip shape be non-zero. dst = texture; GR_STATIC_CONST_SAME_STENCIL(kStencilInElement, kReplace_StencilOp, kReplace_StencilOp, kAlways_StencilFunc, 0xffff, 0xffff, 0xffff); pipelineBuilder.setStencil(kStencilInElement); set_coverage_drawing_xpf(op, invert, &pipelineBuilder); } if (!this->drawElement(&pipelineBuilder, translate, dst, element, pr)) { texture->resourcePriv().removeUniqueKey(); return nullptr; } if (useTemp) { GrPipelineBuilder backgroundPipelineBuilder; backgroundPipelineBuilder.setRenderTarget(texture->asRenderTarget()); // Now draw into the accumulator using the real operation and the temp buffer as a // texture this->mergeMask(&backgroundPipelineBuilder, texture, temp, op, maskSpaceIBounds, maskSpaceElementIBounds); } else { GrPipelineBuilder backgroundPipelineBuilder; backgroundPipelineBuilder.setRenderTarget(texture->asRenderTarget()); set_coverage_drawing_xpf(op, !invert, &backgroundPipelineBuilder); // Draw to the exterior pixels (those with a zero stencil value). GR_STATIC_CONST_SAME_STENCIL(kDrawOutsideElement, kZero_StencilOp, kZero_StencilOp, kEqual_StencilFunc, 0xffff, 0x0000, 0xffff); backgroundPipelineBuilder.setStencil(kDrawOutsideElement); // The color passed in here does not matter since the coverageSetOpXP won't read it. fDrawTarget->drawNonAARect(backgroundPipelineBuilder, GrColor_WHITE, translate, clipSpaceIBounds); } } else { GrPipelineBuilder pipelineBuilder; // all the remaining ops can just be directly draw into the accumulation buffer set_coverage_drawing_xpf(op, false, &pipelineBuilder); // The color passed in here does not matter since the coverageSetOpXP won't read it. this->drawElement(&pipelineBuilder, translate, texture, element); } } return texture.detach(); }
//////////////////////////////////////////////////////////////////////////////// // Create a 1-bit clip mask in the stencil buffer. 'devClipBounds' are in device // (as opposed to canvas) coordinates bool GrClipMaskManager::createStencilClipMask(GrRenderTarget* rt, int32_t elementsGenID, GrReducedClip::InitialState initialState, const GrReducedClip::ElementList& elements, const SkIRect& clipSpaceIBounds, const SkIPoint& clipSpaceToStencilOffset) { SkASSERT(rt); GrStencilAttachment* stencilAttachment = fDrawTarget->cmmAccess().resourceProvider()->attachStencilAttachment(rt); if (nullptr == stencilAttachment) { return false; } if (stencilAttachment->mustRenderClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset)) { stencilAttachment->setLastClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset); // Set the matrix so that rendered clip elements are transformed from clip to stencil space. SkVector translate = { SkIntToScalar(clipSpaceToStencilOffset.fX), SkIntToScalar(clipSpaceToStencilOffset.fY) }; SkMatrix viewMatrix; viewMatrix.setTranslate(translate); // We set the current clip to the bounds so that our recursive draws are scissored to them. SkIRect stencilSpaceIBounds(clipSpaceIBounds); stencilSpaceIBounds.offset(clipSpaceToStencilOffset); GrClip clip(stencilSpaceIBounds); int clipBit = stencilAttachment->bits(); SkASSERT((clipBit <= 16) && "Ganesh only handles 16b or smaller stencil buffers"); clipBit = (1 << (clipBit-1)); fDrawTarget->cmmAccess().clearStencilClip(stencilSpaceIBounds, GrReducedClip::kAllIn_InitialState == initialState, rt); // walk through each clip element and perform its set op // with the existing clip. for (GrReducedClip::ElementList::Iter iter(elements.headIter()); iter.get(); iter.next()) { const Element* element = iter.get(); GrPipelineBuilder pipelineBuilder; pipelineBuilder.setClip(clip); pipelineBuilder.setRenderTarget(rt); pipelineBuilder.setDisableColorXPFactory(); // if the target is MSAA then we want MSAA enabled when the clip is soft if (rt->isStencilBufferMultisampled()) { pipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, element->isAA()); } bool fillInverted = false; // enabled at bottom of loop fClipMode = kIgnoreClip_StencilClipMode; // This will be used to determine whether the clip shape can be rendered into the // stencil with arbitrary stencil settings. GrPathRenderer::StencilSupport stencilSupport; GrStrokeInfo stroke(SkStrokeRec::kFill_InitStyle); SkRegion::Op op = element->getOp(); GrPathRenderer* pr = nullptr; SkPath clipPath; if (Element::kRect_Type == element->getType()) { stencilSupport = GrPathRenderer::kNoRestriction_StencilSupport; fillInverted = false; } else { element->asPath(&clipPath); fillInverted = clipPath.isInverseFillType(); if (fillInverted) { clipPath.toggleInverseFillType(); } pr = this->getContext()->getPathRenderer(fDrawTarget, &pipelineBuilder, viewMatrix, clipPath, stroke, false, GrPathRendererChain::kStencilOnly_DrawType, &stencilSupport); if (nullptr == pr) { return false; } } int passes; GrStencilSettings stencilSettings[GrStencilSettings::kMaxStencilClipPasses]; bool canRenderDirectToStencil = GrPathRenderer::kNoRestriction_StencilSupport == stencilSupport; bool canDrawDirectToClip; // Given the renderer, the element, // fill rule, and set operation can // we render the element directly to // stencil bit used for clipping. canDrawDirectToClip = GrStencilSettings::GetClipPasses(op, canRenderDirectToStencil, clipBit, fillInverted, &passes, stencilSettings); // draw the element to the client stencil bits if necessary if (!canDrawDirectToClip) { GR_STATIC_CONST_SAME_STENCIL(gDrawToStencil, kIncClamp_StencilOp, kIncClamp_StencilOp, kAlways_StencilFunc, 0xffff, 0x0000, 0xffff); if (Element::kRect_Type == element->getType()) { *pipelineBuilder.stencil() = gDrawToStencil; // We need this AGP until everything is in GrBatch fDrawTarget->drawNonAARect(pipelineBuilder, GrColor_WHITE, viewMatrix, element->getRect()); } else { if (!clipPath.isEmpty()) { if (canRenderDirectToStencil) { *pipelineBuilder.stencil() = gDrawToStencil; GrPathRenderer::DrawPathArgs args; args.fTarget = fDrawTarget; args.fResourceProvider = this->getContext()->resourceProvider(); args.fPipelineBuilder = &pipelineBuilder; args.fColor = GrColor_WHITE; args.fViewMatrix = &viewMatrix; args.fPath = &clipPath; args.fStroke = &stroke; args.fAntiAlias = false; pr->drawPath(args); } else { GrPathRenderer::StencilPathArgs args; args.fTarget = fDrawTarget; args.fResourceProvider = this->getContext()->resourceProvider(); args.fPipelineBuilder = &pipelineBuilder; args.fViewMatrix = &viewMatrix; args.fPath = &clipPath; args.fStroke = &stroke; pr->stencilPath(args); } } } } // now we modify the clip bit by rendering either the clip // element directly or a bounding rect of the entire clip. fClipMode = kModifyClip_StencilClipMode; for (int p = 0; p < passes; ++p) { *pipelineBuilder.stencil() = stencilSettings[p]; if (canDrawDirectToClip) { if (Element::kRect_Type == element->getType()) { // We need this AGP until everything is in GrBatch fDrawTarget->drawNonAARect(pipelineBuilder, GrColor_WHITE, viewMatrix, element->getRect()); } else { GrPathRenderer::DrawPathArgs args; args.fTarget = fDrawTarget; args.fResourceProvider = this->getContext()->resourceProvider(); args.fPipelineBuilder = &pipelineBuilder; args.fColor = GrColor_WHITE; args.fViewMatrix = &viewMatrix; args.fPath = &clipPath; args.fStroke = &stroke; args.fAntiAlias = false; pr->drawPath(args); } } else { // The view matrix is setup to do clip space -> stencil space translation, so // draw rect in clip space. fDrawTarget->drawNonAARect(pipelineBuilder, GrColor_WHITE, viewMatrix, SkRect::Make(clipSpaceIBounds)); } } } } fClipMode = kRespectClip_StencilClipMode; return true; }
bool GrDrawTarget::programUnitTest(GrContext* context, int maxStages) { // setup dummy textures GrSurfaceDesc dummyDesc; dummyDesc.fFlags = kRenderTarget_GrSurfaceFlag; dummyDesc.fConfig = kSkia8888_GrPixelConfig; dummyDesc.fWidth = 34; dummyDesc.fHeight = 18; SkAutoTUnref<GrTexture> dummyTexture1( context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0)); dummyDesc.fFlags = kNone_GrSurfaceFlags; dummyDesc.fConfig = kAlpha_8_GrPixelConfig; dummyDesc.fWidth = 16; dummyDesc.fHeight = 22; SkAutoTUnref<GrTexture> dummyTexture2( context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0)); if (!dummyTexture1 || ! dummyTexture2) { SkDebugf("Could not allocate dummy textures"); return false; } GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()}; // dummy scissor state GrScissorState scissor; // wide open clip GrClip clip; SkRandom random; static const int NUM_TESTS = 2048; for (int t = 0; t < NUM_TESTS; t++) { // setup random render target(can fail) SkAutoTUnref<GrRenderTarget> rt(random_render_target( context->textureProvider(), &random, this->caps())); if (!rt.get()) { SkDebugf("Could not allocate render target"); return false; } GrPipelineBuilder pipelineBuilder; pipelineBuilder.setRenderTarget(rt.get()); pipelineBuilder.setClip(clip); SkAutoTUnref<GrDrawBatch> batch(GrRandomDrawBatch(&random, context)); SkASSERT(batch); GrProcessorDataManager procDataManager; GrProcessorTestData ptd(&random, context, &procDataManager, fGpu->caps(), dummyTextures); set_random_color_coverage_stages(&pipelineBuilder, &ptd, maxStages); set_random_xpf(&pipelineBuilder, &ptd); set_random_state(&pipelineBuilder, &random); set_random_stencil(&pipelineBuilder, &random); this->drawBatch(pipelineBuilder, batch); } // Flush everything, test passes if flush is successful(ie, no asserts are hit, no crashes) this->flush(); return true; }