src/gpu/ganesh/d3d/GrD3DOpsRenderPass.cpp - skia - Git at Google

 /*
  * Copyright 2020 Google LLC
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "src/gpu/ganesh/d3d/GrD3DOpsRenderPass.h"

 #include "src/gpu/ganesh/GrBackendUtils.h"
 #include "src/gpu/ganesh/GrOpFlushState.h"
 #include "src/gpu/ganesh/GrProgramDesc.h"
 #include "src/gpu/ganesh/GrRenderTarget.h"
 #include "src/gpu/ganesh/GrStencilSettings.h"
 #include "src/gpu/ganesh/d3d/GrD3DBuffer.h"
 #include "src/gpu/ganesh/d3d/GrD3DCommandSignature.h"
 #include "src/gpu/ganesh/d3d/GrD3DGpu.h"
 #include "src/gpu/ganesh/d3d/GrD3DPipelineState.h"
 #include "src/gpu/ganesh/d3d/GrD3DPipelineStateBuilder.h"
 #include "src/gpu/ganesh/d3d/GrD3DRenderTarget.h"
 #include "src/gpu/ganesh/d3d/GrD3DTexture.h"
 #include "src/gpu/ganesh/effects/GrTextureEffect.h"

 #ifdef SK_DEBUG
 #include "include/gpu/GrDirectContext.h"
 #include "src/gpu/ganesh/GrDirectContextPriv.h"
 #endif

 GrD3DOpsRenderPass::GrD3DOpsRenderPass(GrD3DGpu* gpu) : fGpu(gpu) {}

 bool GrD3DOpsRenderPass::set(GrRenderTarget* rt, GrSurfaceOrigin origin, const SkIRect& bounds,
                              const GrOpsRenderPass::LoadAndStoreInfo& colorInfo,
                              const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilInfo,
                              const SkTArray<GrSurfaceProxy*, true>& sampledProxies) {
     SkASSERT(!fRenderTarget);
     SkASSERT(fGpu == rt->getContext()->priv().getGpu());

     this->INHERITED::set(rt, origin);

     fBounds = bounds;

     fColorLoadOp = colorInfo.fLoadOp;
     fClearColor = colorInfo.fClearColor;
     fStencilLoadOp = stencilInfo.fLoadOp;

     // TODO

     return true;
 }

 GrD3DOpsRenderPass::~GrD3DOpsRenderPass() {}

 GrGpu* GrD3DOpsRenderPass::gpu() { return fGpu; }

 void GrD3DOpsRenderPass::onBegin() {
     GrD3DRenderTarget* d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
     if (d3dRT->numSamples() > 1) {
         d3dRT->msaaTextureResource()->setResourceState(fGpu, D3D12_RESOURCE_STATE_RENDER_TARGET);
     } else {
         d3dRT->setResourceState(fGpu, D3D12_RESOURCE_STATE_RENDER_TARGET);
     }
     fGpu->currentCommandList()->setRenderTarget(d3dRT);

     if (GrLoadOp::kClear == fColorLoadOp) {
         // Passing in nullptr for the rect clears the entire d3d RT. Is this correct? Does the load
         // op respect the logical bounds of a RT?
         fGpu->currentCommandList()->clearRenderTargetView(d3dRT, fClearColor, nullptr);
     }

     if (auto stencil = d3dRT->getStencilAttachment()) {
         GrD3DAttachment* d3dStencil = static_cast<GrD3DAttachment*>(stencil);
         d3dStencil->setResourceState(fGpu, D3D12_RESOURCE_STATE_DEPTH_WRITE);
         if (fStencilLoadOp == GrLoadOp::kClear) {
             fGpu->currentCommandList()->clearDepthStencilView(d3dStencil, 0, nullptr);
         }
     }
 }

 void set_stencil_ref(GrD3DGpu* gpu, const GrProgramInfo& info) {
     GrStencilSettings stencilSettings = info.nonGLStencilSettings();
     if (!stencilSettings.isDisabled()) {
         unsigned int stencilRef = 0;
         if (stencilSettings.isTwoSided()) {
             SkASSERT(stencilSettings.postOriginCCWFace(info.origin()).fRef ==
                      stencilSettings.postOriginCWFace(info.origin()).fRef);
             stencilRef = stencilSettings.postOriginCCWFace(info.origin()).fRef;
         } else {
             stencilRef = stencilSettings.singleSidedFace().fRef;
         }
         gpu->currentCommandList()->setStencilRef(stencilRef);
     }
 }

 void set_blend_factor(GrD3DGpu* gpu, const GrProgramInfo& info) {
     const GrXferProcessor& xferProcessor = info.pipeline().getXferProcessor();
     const skgpu::Swizzle& swizzle = info.pipeline().writeSwizzle();
     const skgpu::BlendInfo& blendInfo = xferProcessor.getBlendInfo();
     skgpu::BlendCoeff srcCoeff = blendInfo.fSrcBlend;
     skgpu::BlendCoeff dstCoeff = blendInfo.fDstBlend;
     float floatColors[4];
     if (skgpu::BlendCoeffRefsConstant(srcCoeff) || skgpu::BlendCoeffRefsConstant(dstCoeff)) {
         // Swizzle the blend to match what the shader will output.
         SkPMColor4f blendConst = swizzle.applyTo(blendInfo.fBlendConstant);
         floatColors[0] = blendConst.fR;
         floatColors[1] = blendConst.fG;
         floatColors[2] = blendConst.fB;
         floatColors[3] = blendConst.fA;
     } else {
         memset(floatColors, 0, 4 * sizeof(float));
     }
     gpu->currentCommandList()->setBlendFactor(floatColors);
 }

 void set_primitive_topology(GrD3DGpu* gpu, const GrProgramInfo& info) {
     D3D12_PRIMITIVE_TOPOLOGY topology = D3D_PRIMITIVE_TOPOLOGY_UNDEFINED;
     switch (info.primitiveType()) {
         case GrPrimitiveType::kTriangles:
             topology = D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST;
             break;
         case GrPrimitiveType::kTriangleStrip:
             topology = D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP;
             break;
         case GrPrimitiveType::kPoints:
             topology = D3D_PRIMITIVE_TOPOLOGY_POINTLIST;
             break;
         case GrPrimitiveType::kLines:
             topology = D3D_PRIMITIVE_TOPOLOGY_LINELIST;
             break;
         case GrPrimitiveType::kLineStrip:
             topology = D3D_PRIMITIVE_TOPOLOGY_LINESTRIP;
             break;
         default:
             SkUNREACHABLE;
     }
     gpu->currentCommandList()->setPrimitiveTopology(topology);
 }

 void set_scissor_rects(GrD3DGpu* gpu, const GrRenderTarget* renderTarget, GrSurfaceOrigin rtOrigin,
                        const SkIRect& scissorRect) {
     SkASSERT(scissorRect.isEmpty() ||
              SkIRect::MakeWH(renderTarget->width(), renderTarget->height()).contains(scissorRect));

     D3D12_RECT scissor;
     scissor.left = scissorRect.fLeft;
     scissor.right = scissorRect.fRight;
     if (kTopLeft_GrSurfaceOrigin == rtOrigin) {
         scissor.top = scissorRect.fTop;
     } else {
         SkASSERT(kBottomLeft_GrSurfaceOrigin == rtOrigin);
         scissor.top = renderTarget->height() - scissorRect.fBottom;
     }
     scissor.bottom = scissor.top + scissorRect.height();

     SkASSERT(scissor.left >= 0);
     SkASSERT(scissor.top >= 0);
     gpu->currentCommandList()->setScissorRects(1, &scissor);
 }

 void set_viewport(GrD3DGpu* gpu, const GrRenderTarget* renderTarget) {
     D3D12_VIEWPORT viewport;
     viewport.TopLeftX = 0.0f;
     viewport.TopLeftY = 0.0f;
     viewport.Width = SkIntToScalar(renderTarget->width());
     viewport.Height = SkIntToScalar(renderTarget->height());
     viewport.MinDepth = 0.0f;
     viewport.MaxDepth = 1.0f;
     gpu->currentCommandList()->setViewports(1, &viewport);
 }

 bool GrD3DOpsRenderPass::onBindPipeline(const GrProgramInfo& info, const SkRect& drawBounds) {
     SkRect rtRect = SkRect::Make(fBounds);
     if (rtRect.intersect(drawBounds)) {
         rtRect.roundOut(&fCurrentPipelineBounds);
     } else {
         fCurrentPipelineBounds.setEmpty();
     }

     GrD3DRenderTarget* d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
     fCurrentPipelineState =
             fGpu->resourceProvider().findOrCreateCompatiblePipelineState(d3dRT, info);
     if (!fCurrentPipelineState) {
         return false;
     }

     fGpu->currentCommandList()->setGraphicsRootSignature(fCurrentPipelineState->rootSignature());
     fGpu->currentCommandList()->setPipelineState(fCurrentPipelineState->pipeline());
     fCurrentPipelineState->setAndBindConstants(fGpu, fRenderTarget, info);

     set_stencil_ref(fGpu, info);
     set_blend_factor(fGpu, info);
     set_primitive_topology(fGpu, info);
     if (!info.pipeline().isScissorTestEnabled()) {
         // "Disable" scissor by setting it to the full pipeline bounds.
         set_scissor_rects(fGpu, fRenderTarget, fOrigin, fCurrentPipelineBounds);
     }
     set_viewport(fGpu, fRenderTarget);

     return true;
 }

 void GrD3DOpsRenderPass::onSetScissorRect(const SkIRect& scissor) {
     SkIRect combinedScissorRect;
     if (!combinedScissorRect.intersect(fCurrentPipelineBounds, scissor)) {
         combinedScissorRect = SkIRect::MakeEmpty();
     }

     set_scissor_rects(fGpu, fRenderTarget, fOrigin, combinedScissorRect);
 }

 void update_resource_state(GrTexture* tex, GrRenderTarget* rt, GrD3DGpu* gpu) {
     SkASSERT(!tex->isProtected() || (rt->isProtected() && gpu->protectedContext()));
     GrD3DTexture* d3dTex = static_cast<GrD3DTexture*>(tex);
     SkASSERT(d3dTex);
     d3dTex->setResourceState(gpu, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
 }

 bool GrD3DOpsRenderPass::onBindTextures(const GrGeometryProcessor& geomProc,
                                         const GrSurfaceProxy* const geomProcTextures[],
                                         const GrPipeline& pipeline) {
     SkASSERT(fCurrentPipelineState);

     // update textures to sampled resource state
     for (int i = 0; i < geomProc.numTextureSamplers(); ++i) {
         update_resource_state(geomProcTextures[i]->peekTexture(), fRenderTarget, fGpu);
     }

     pipeline.visitTextureEffects([&](const GrTextureEffect& te) {
         update_resource_state(te.texture(), fRenderTarget, fGpu);
     });

     if (GrTexture* dstTexture = pipeline.peekDstTexture()) {
         update_resource_state(dstTexture, fRenderTarget, fGpu);
     }

     // TODO: possibly check for success once we start binding properly
     fCurrentPipelineState->setAndBindTextures(fGpu, geomProc, geomProcTextures, pipeline);

     return true;
 }

 void GrD3DOpsRenderPass::onBindBuffers(sk_sp<const GrBuffer> indexBuffer,
                                        sk_sp<const GrBuffer> instanceBuffer,
                                        sk_sp<const GrBuffer> vertexBuffer,
                                        GrPrimitiveRestart primRestart) {
     SkASSERT(GrPrimitiveRestart::kNo == primRestart);
     SkASSERT(fCurrentPipelineState);
     SkASSERT(!fGpu->caps()->usePrimitiveRestart());  // Ignore primitiveRestart parameter.

     GrD3DDirectCommandList* currCmdList = fGpu->currentCommandList();
     SkASSERT(currCmdList);

     fCurrentPipelineState->bindBuffers(fGpu, std::move(indexBuffer), std::move(instanceBuffer),
                                        std::move(vertexBuffer), currCmdList);
 }

 void GrD3DOpsRenderPass::onDrawInstanced(int instanceCount, int baseInstance, int vertexCount,
                                             int baseVertex) {
     SkASSERT(fCurrentPipelineState);
     fGpu->currentCommandList()->drawInstanced(vertexCount, instanceCount, baseVertex, baseInstance);
     fGpu->stats()->incNumDraws();
 }

 void GrD3DOpsRenderPass::onDrawIndexedInstanced(int indexCount, int baseIndex, int instanceCount,
                                                 int baseInstance, int baseVertex) {
     SkASSERT(fCurrentPipelineState);
     fGpu->currentCommandList()->drawIndexedInstanced(indexCount, instanceCount, baseIndex,
                                                      baseVertex, baseInstance);
     fGpu->stats()->incNumDraws();
 }

 void GrD3DOpsRenderPass::onDrawIndirect(const GrBuffer* buffer, size_t offset, int drawCount) {
     constexpr unsigned int kSlot = 0;
     sk_sp<GrD3DCommandSignature> cmdSig = fGpu->resourceProvider().findOrCreateCommandSignature(
             GrD3DCommandSignature::ForIndexed::kNo, kSlot);
     fGpu->currentCommandList()->executeIndirect(cmdSig, drawCount,
                                                 static_cast<const GrD3DBuffer*>(buffer), offset);
     fGpu->stats()->incNumDraws();
 }

 void GrD3DOpsRenderPass::onDrawIndexedIndirect(const GrBuffer* buffer, size_t offset,
                                                int drawCount) {
     constexpr unsigned int kSlot = 0;
     sk_sp<GrD3DCommandSignature> cmdSig = fGpu->resourceProvider().findOrCreateCommandSignature(
             GrD3DCommandSignature::ForIndexed::kYes, kSlot);
     fGpu->currentCommandList()->executeIndirect(cmdSig, drawCount,
                                                 static_cast<const GrD3DBuffer*>(buffer), offset);
     fGpu->stats()->incNumDraws();
 }


 static D3D12_RECT scissor_to_d3d_clear_rect(const GrScissorState& scissor,
                                             const GrSurface* surface,
                                             GrSurfaceOrigin origin) {
     D3D12_RECT clearRect;
     // Flip rect if necessary
     SkIRect d3dRect;
     if (!scissor.enabled()) {
         d3dRect.setXYWH(0, 0, surface->width(), surface->height());
     } else if (kBottomLeft_GrSurfaceOrigin != origin) {
         d3dRect = scissor.rect();
     } else {
         d3dRect.setLTRB(scissor.rect().fLeft, surface->height() - scissor.rect().fBottom,
                         scissor.rect().fRight, surface->height() - scissor.rect().fTop);
     }
     clearRect.left = d3dRect.fLeft;
     clearRect.right = d3dRect.fRight;
     clearRect.top = d3dRect.fTop;
     clearRect.bottom = d3dRect.fBottom;
     return clearRect;
 }

 void GrD3DOpsRenderPass::onClear(const GrScissorState& scissor, std::array<float, 4> color) {
     D3D12_RECT clearRect = scissor_to_d3d_clear_rect(scissor, fRenderTarget, fOrigin);
     auto d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
     SkASSERT(d3dRT->grD3DResourceState()->getResourceState() == D3D12_RESOURCE_STATE_RENDER_TARGET);
     fGpu->currentCommandList()->clearRenderTargetView(d3dRT, color, &clearRect);
 }

 void GrD3DOpsRenderPass::onClearStencilClip(const GrScissorState& scissor, bool insideStencilMask) {
     GrAttachment* sb = fRenderTarget->getStencilAttachment();
     // this should only be called internally when we know we have a
     // stencil buffer.
     SkASSERT(sb);
     int stencilBitCount = GrBackendFormatStencilBits(sb->backendFormat());

     // The contract with the callers does not guarantee that we preserve all bits in the stencil
     // during this clear. Thus we will clear the entire stencil to the desired value.

     uint8_t stencilColor = 0;
     if (insideStencilMask) {
         stencilColor = (1 << (stencilBitCount - 1));
     }

     D3D12_RECT clearRect = scissor_to_d3d_clear_rect(scissor, fRenderTarget, fOrigin);

     auto d3dStencil = static_cast<GrD3DAttachment*>(sb);
     fGpu->currentCommandList()->clearDepthStencilView(d3dStencil, stencilColor, &clearRect);
 }

 void GrD3DOpsRenderPass::inlineUpload(GrOpFlushState* state, GrDeferredTextureUploadFn& upload) {
     // If we ever start using copy command lists for doing uploads, then we'll need to make sure
     // we submit our main command list before doing the copy here and then start a new main command
     // list.

     fGpu->endRenderPass(fRenderTarget, fOrigin, fBounds);

     // We pass in true here to signal that after the upload we need to set the upload texture's
     // resource state back to D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE.
     state->doUpload(upload, true);
 }

 void GrD3DOpsRenderPass::submit() {
     if (!fRenderTarget) {
         return;
     }

     // We don't use render passes in d3d, so there is nothing to submit here as all commands have
     // already been recorded on the main command list. If in the future we start to use render
     // passes on d3d12 devices that support them (most likely ARM devices), then we
     // will submit them here.
     fGpu->endRenderPass(fRenderTarget, fOrigin, fBounds);
 }
	/*
	* Copyright 2020 Google LLC
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "src/gpu/ganesh/d3d/GrD3DOpsRenderPass.h"

	#include "src/gpu/ganesh/GrBackendUtils.h"
	#include "src/gpu/ganesh/GrOpFlushState.h"
	#include "src/gpu/ganesh/GrProgramDesc.h"
	#include "src/gpu/ganesh/GrRenderTarget.h"
	#include "src/gpu/ganesh/GrStencilSettings.h"
	#include "src/gpu/ganesh/d3d/GrD3DBuffer.h"
	#include "src/gpu/ganesh/d3d/GrD3DCommandSignature.h"
	#include "src/gpu/ganesh/d3d/GrD3DGpu.h"
	#include "src/gpu/ganesh/d3d/GrD3DPipelineState.h"
	#include "src/gpu/ganesh/d3d/GrD3DPipelineStateBuilder.h"
	#include "src/gpu/ganesh/d3d/GrD3DRenderTarget.h"
	#include "src/gpu/ganesh/d3d/GrD3DTexture.h"
	#include "src/gpu/ganesh/effects/GrTextureEffect.h"

	#ifdef SK_DEBUG
	#include "include/gpu/GrDirectContext.h"
	#include "src/gpu/ganesh/GrDirectContextPriv.h"
	#endif

	GrD3DOpsRenderPass::GrD3DOpsRenderPass(GrD3DGpu* gpu) : fGpu(gpu) {}

	bool GrD3DOpsRenderPass::set(GrRenderTarget* rt, GrSurfaceOrigin origin, const SkIRect& bounds,
	const GrOpsRenderPass::LoadAndStoreInfo& colorInfo,
	const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilInfo,
	const SkTArray<GrSurfaceProxy*, true>& sampledProxies) {
	SkASSERT(!fRenderTarget);
	SkASSERT(fGpu == rt->getContext()->priv().getGpu());

	this->INHERITED::set(rt, origin);

	fBounds = bounds;

	fColorLoadOp = colorInfo.fLoadOp;
	fClearColor = colorInfo.fClearColor;
	fStencilLoadOp = stencilInfo.fLoadOp;

	// TODO

	return true;
	}

	GrD3DOpsRenderPass::~GrD3DOpsRenderPass() {}

	GrGpu* GrD3DOpsRenderPass::gpu() { return fGpu; }

	void GrD3DOpsRenderPass::onBegin() {
	GrD3DRenderTarget* d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
	if (d3dRT->numSamples() > 1) {
	d3dRT->msaaTextureResource()->setResourceState(fGpu, D3D12_RESOURCE_STATE_RENDER_TARGET);
	} else {
	d3dRT->setResourceState(fGpu, D3D12_RESOURCE_STATE_RENDER_TARGET);
	}
	fGpu->currentCommandList()->setRenderTarget(d3dRT);

	if (GrLoadOp::kClear == fColorLoadOp) {
	// Passing in nullptr for the rect clears the entire d3d RT. Is this correct? Does the load
	// op respect the logical bounds of a RT?
	fGpu->currentCommandList()->clearRenderTargetView(d3dRT, fClearColor, nullptr);
	}

	if (auto stencil = d3dRT->getStencilAttachment()) {
	GrD3DAttachment* d3dStencil = static_cast<GrD3DAttachment*>(stencil);
	d3dStencil->setResourceState(fGpu, D3D12_RESOURCE_STATE_DEPTH_WRITE);
	if (fStencilLoadOp == GrLoadOp::kClear) {
	fGpu->currentCommandList()->clearDepthStencilView(d3dStencil, 0, nullptr);
	}
	}
	}

	void set_stencil_ref(GrD3DGpu* gpu, const GrProgramInfo& info) {
	GrStencilSettings stencilSettings = info.nonGLStencilSettings();
	if (!stencilSettings.isDisabled()) {
	unsigned int stencilRef = 0;
	if (stencilSettings.isTwoSided()) {
	SkASSERT(stencilSettings.postOriginCCWFace(info.origin()).fRef ==
	stencilSettings.postOriginCWFace(info.origin()).fRef);
	stencilRef = stencilSettings.postOriginCCWFace(info.origin()).fRef;
	} else {
	stencilRef = stencilSettings.singleSidedFace().fRef;
	}
	gpu->currentCommandList()->setStencilRef(stencilRef);
	}
	}

	void set_blend_factor(GrD3DGpu* gpu, const GrProgramInfo& info) {
	const GrXferProcessor& xferProcessor = info.pipeline().getXferProcessor();
	const skgpu::Swizzle& swizzle = info.pipeline().writeSwizzle();
	const skgpu::BlendInfo& blendInfo = xferProcessor.getBlendInfo();
	skgpu::BlendCoeff srcCoeff = blendInfo.fSrcBlend;
	skgpu::BlendCoeff dstCoeff = blendInfo.fDstBlend;
	float floatColors[4];
	if (skgpu::BlendCoeffRefsConstant(srcCoeff) \|\| skgpu::BlendCoeffRefsConstant(dstCoeff)) {
	// Swizzle the blend to match what the shader will output.
	SkPMColor4f blendConst = swizzle.applyTo(blendInfo.fBlendConstant);
	floatColors[0] = blendConst.fR;
	floatColors[1] = blendConst.fG;
	floatColors[2] = blendConst.fB;
	floatColors[3] = blendConst.fA;
	} else {
	memset(floatColors, 0, 4 * sizeof(float));
	}
	gpu->currentCommandList()->setBlendFactor(floatColors);
	}

	void set_primitive_topology(GrD3DGpu* gpu, const GrProgramInfo& info) {
	D3D12_PRIMITIVE_TOPOLOGY topology = D3D_PRIMITIVE_TOPOLOGY_UNDEFINED;
	switch (info.primitiveType()) {
	case GrPrimitiveType::kTriangles:
	topology = D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST;
	break;
	case GrPrimitiveType::kTriangleStrip:
	topology = D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP;
	break;
	case GrPrimitiveType::kPoints:
	topology = D3D_PRIMITIVE_TOPOLOGY_POINTLIST;
	break;
	case GrPrimitiveType::kLines:
	topology = D3D_PRIMITIVE_TOPOLOGY_LINELIST;
	break;
	case GrPrimitiveType::kLineStrip:
	topology = D3D_PRIMITIVE_TOPOLOGY_LINESTRIP;
	break;
	default:
	SkUNREACHABLE;
	}
	gpu->currentCommandList()->setPrimitiveTopology(topology);
	}

	void set_scissor_rects(GrD3DGpu* gpu, const GrRenderTarget* renderTarget, GrSurfaceOrigin rtOrigin,
	const SkIRect& scissorRect) {
	SkASSERT(scissorRect.isEmpty() \|\|
	SkIRect::MakeWH(renderTarget->width(), renderTarget->height()).contains(scissorRect));

	D3D12_RECT scissor;
	scissor.left = scissorRect.fLeft;
	scissor.right = scissorRect.fRight;
	if (kTopLeft_GrSurfaceOrigin == rtOrigin) {
	scissor.top = scissorRect.fTop;
	} else {
	SkASSERT(kBottomLeft_GrSurfaceOrigin == rtOrigin);
	scissor.top = renderTarget->height() - scissorRect.fBottom;
	}
	scissor.bottom = scissor.top + scissorRect.height();

	SkASSERT(scissor.left >= 0);
	SkASSERT(scissor.top >= 0);
	gpu->currentCommandList()->setScissorRects(1, &scissor);
	}

	void set_viewport(GrD3DGpu* gpu, const GrRenderTarget* renderTarget) {
	D3D12_VIEWPORT viewport;
	viewport.TopLeftX = 0.0f;
	viewport.TopLeftY = 0.0f;
	viewport.Width = SkIntToScalar(renderTarget->width());
	viewport.Height = SkIntToScalar(renderTarget->height());
	viewport.MinDepth = 0.0f;
	viewport.MaxDepth = 1.0f;
	gpu->currentCommandList()->setViewports(1, &viewport);
	}

	bool GrD3DOpsRenderPass::onBindPipeline(const GrProgramInfo& info, const SkRect& drawBounds) {
	SkRect rtRect = SkRect::Make(fBounds);
	if (rtRect.intersect(drawBounds)) {
	rtRect.roundOut(&fCurrentPipelineBounds);
	} else {
	fCurrentPipelineBounds.setEmpty();
	}

	GrD3DRenderTarget* d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
	fCurrentPipelineState =
	fGpu->resourceProvider().findOrCreateCompatiblePipelineState(d3dRT, info);
	if (!fCurrentPipelineState) {
	return false;
	}

	fGpu->currentCommandList()->setGraphicsRootSignature(fCurrentPipelineState->rootSignature());
	fGpu->currentCommandList()->setPipelineState(fCurrentPipelineState->pipeline());
	fCurrentPipelineState->setAndBindConstants(fGpu, fRenderTarget, info);

	set_stencil_ref(fGpu, info);
	set_blend_factor(fGpu, info);
	set_primitive_topology(fGpu, info);
	if (!info.pipeline().isScissorTestEnabled()) {
	// "Disable" scissor by setting it to the full pipeline bounds.
	set_scissor_rects(fGpu, fRenderTarget, fOrigin, fCurrentPipelineBounds);
	}
	set_viewport(fGpu, fRenderTarget);

	return true;
	}

	void GrD3DOpsRenderPass::onSetScissorRect(const SkIRect& scissor) {
	SkIRect combinedScissorRect;
	if (!combinedScissorRect.intersect(fCurrentPipelineBounds, scissor)) {
	combinedScissorRect = SkIRect::MakeEmpty();
	}

	set_scissor_rects(fGpu, fRenderTarget, fOrigin, combinedScissorRect);
	}

	void update_resource_state(GrTexture* tex, GrRenderTarget* rt, GrD3DGpu* gpu) {
	SkASSERT(!tex->isProtected() \|\| (rt->isProtected() && gpu->protectedContext()));
	GrD3DTexture* d3dTex = static_cast<GrD3DTexture*>(tex);
	SkASSERT(d3dTex);
	d3dTex->setResourceState(gpu, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
	}

	bool GrD3DOpsRenderPass::onBindTextures(const GrGeometryProcessor& geomProc,
	const GrSurfaceProxy* const geomProcTextures[],
	const GrPipeline& pipeline) {
	SkASSERT(fCurrentPipelineState);

	// update textures to sampled resource state
	for (int i = 0; i < geomProc.numTextureSamplers(); ++i) {
	update_resource_state(geomProcTextures[i]->peekTexture(), fRenderTarget, fGpu);
	}

	pipeline.visitTextureEffects([&](const GrTextureEffect& te) {
	update_resource_state(te.texture(), fRenderTarget, fGpu);
	});

	if (GrTexture* dstTexture = pipeline.peekDstTexture()) {
	update_resource_state(dstTexture, fRenderTarget, fGpu);
	}

	// TODO: possibly check for success once we start binding properly
	fCurrentPipelineState->setAndBindTextures(fGpu, geomProc, geomProcTextures, pipeline);

	return true;
	}

	void GrD3DOpsRenderPass::onBindBuffers(sk_sp<const GrBuffer> indexBuffer,
	sk_sp<const GrBuffer> instanceBuffer,
	sk_sp<const GrBuffer> vertexBuffer,
	GrPrimitiveRestart primRestart) {
	SkASSERT(GrPrimitiveRestart::kNo == primRestart);
	SkASSERT(fCurrentPipelineState);
	SkASSERT(!fGpu->caps()->usePrimitiveRestart()); // Ignore primitiveRestart parameter.

	GrD3DDirectCommandList* currCmdList = fGpu->currentCommandList();
	SkASSERT(currCmdList);

	fCurrentPipelineState->bindBuffers(fGpu, std::move(indexBuffer), std::move(instanceBuffer),
	std::move(vertexBuffer), currCmdList);
	}

	void GrD3DOpsRenderPass::onDrawInstanced(int instanceCount, int baseInstance, int vertexCount,
	int baseVertex) {
	SkASSERT(fCurrentPipelineState);
	fGpu->currentCommandList()->drawInstanced(vertexCount, instanceCount, baseVertex, baseInstance);
	fGpu->stats()->incNumDraws();
	}

	void GrD3DOpsRenderPass::onDrawIndexedInstanced(int indexCount, int baseIndex, int instanceCount,
	int baseInstance, int baseVertex) {
	SkASSERT(fCurrentPipelineState);
	fGpu->currentCommandList()->drawIndexedInstanced(indexCount, instanceCount, baseIndex,
	baseVertex, baseInstance);
	fGpu->stats()->incNumDraws();
	}

	void GrD3DOpsRenderPass::onDrawIndirect(const GrBuffer* buffer, size_t offset, int drawCount) {
	constexpr unsigned int kSlot = 0;
	sk_sp<GrD3DCommandSignature> cmdSig = fGpu->resourceProvider().findOrCreateCommandSignature(
	GrD3DCommandSignature::ForIndexed::kNo, kSlot);
	fGpu->currentCommandList()->executeIndirect(cmdSig, drawCount,
	static_cast<const GrD3DBuffer*>(buffer), offset);
	fGpu->stats()->incNumDraws();
	}

	void GrD3DOpsRenderPass::onDrawIndexedIndirect(const GrBuffer* buffer, size_t offset,
	int drawCount) {
	constexpr unsigned int kSlot = 0;
	sk_sp<GrD3DCommandSignature> cmdSig = fGpu->resourceProvider().findOrCreateCommandSignature(
	GrD3DCommandSignature::ForIndexed::kYes, kSlot);
	fGpu->currentCommandList()->executeIndirect(cmdSig, drawCount,
	static_cast<const GrD3DBuffer*>(buffer), offset);
	fGpu->stats()->incNumDraws();
	}


	static D3D12_RECT scissor_to_d3d_clear_rect(const GrScissorState& scissor,
	const GrSurface* surface,
	GrSurfaceOrigin origin) {
	D3D12_RECT clearRect;
	// Flip rect if necessary
	SkIRect d3dRect;
	if (!scissor.enabled()) {
	d3dRect.setXYWH(0, 0, surface->width(), surface->height());
	} else if (kBottomLeft_GrSurfaceOrigin != origin) {
	d3dRect = scissor.rect();
	} else {
	d3dRect.setLTRB(scissor.rect().fLeft, surface->height() - scissor.rect().fBottom,
	scissor.rect().fRight, surface->height() - scissor.rect().fTop);
	}
	clearRect.left = d3dRect.fLeft;
	clearRect.right = d3dRect.fRight;
	clearRect.top = d3dRect.fTop;
	clearRect.bottom = d3dRect.fBottom;
	return clearRect;
	}

	void GrD3DOpsRenderPass::onClear(const GrScissorState& scissor, std::array<float, 4> color) {
	D3D12_RECT clearRect = scissor_to_d3d_clear_rect(scissor, fRenderTarget, fOrigin);
	auto d3dRT = static_cast<GrD3DRenderTarget*>(fRenderTarget);
	SkASSERT(d3dRT->grD3DResourceState()->getResourceState() == D3D12_RESOURCE_STATE_RENDER_TARGET);
	fGpu->currentCommandList()->clearRenderTargetView(d3dRT, color, &clearRect);
	}

	void GrD3DOpsRenderPass::onClearStencilClip(const GrScissorState& scissor, bool insideStencilMask) {
	GrAttachment* sb = fRenderTarget->getStencilAttachment();
	// this should only be called internally when we know we have a
	// stencil buffer.
	SkASSERT(sb);
	int stencilBitCount = GrBackendFormatStencilBits(sb->backendFormat());

	// The contract with the callers does not guarantee that we preserve all bits in the stencil
	// during this clear. Thus we will clear the entire stencil to the desired value.

	uint8_t stencilColor = 0;
	if (insideStencilMask) {
	stencilColor = (1 << (stencilBitCount - 1));
	}

	D3D12_RECT clearRect = scissor_to_d3d_clear_rect(scissor, fRenderTarget, fOrigin);

	auto d3dStencil = static_cast<GrD3DAttachment*>(sb);
	fGpu->currentCommandList()->clearDepthStencilView(d3dStencil, stencilColor, &clearRect);
	}

	void GrD3DOpsRenderPass::inlineUpload(GrOpFlushState* state, GrDeferredTextureUploadFn& upload) {
	// If we ever start using copy command lists for doing uploads, then we'll need to make sure
	// we submit our main command list before doing the copy here and then start a new main command
	// list.

	fGpu->endRenderPass(fRenderTarget, fOrigin, fBounds);

	// We pass in true here to signal that after the upload we need to set the upload texture's
	// resource state back to D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE.
	state->doUpload(upload, true);
	}

	void GrD3DOpsRenderPass::submit() {
	if (!fRenderTarget) {
	return;
	}

	// We don't use render passes in d3d, so there is nothing to submit here as all commands have
	// already been recorded on the main command list. If in the future we start to use render
	// passes on d3d12 devices that support them (most likely ARM devices), then we
	// will submit them here.
	fGpu->endRenderPass(fRenderTarget, fOrigin, fBounds);
	}