src/gpu/ops/GrDrawPathOp.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "GrDrawPathOp.h"
 #include "GrAppliedClip.h"
 #include "GrRenderTargetContext.h"
 #include "GrRenderTargetPriv.h"
 #include "SkTemplates.h"

 GrDrawPathOpBase::GrDrawPathOpBase(uint32_t classID, const SkMatrix& viewMatrix, GrPaint&& paint,
                                    GrPathRendering::FillType fill, GrAAType aaType)
         : INHERITED(classID)
         , fViewMatrix(viewMatrix)
         , fInputColor(paint.getColor())
         , fFillType(fill)
         , fAAType(aaType)
         , fPipelineSRGBFlags(GrPipeline::SRGBFlagsFromPaint(paint))
         , fProcessorSet(std::move(paint)) {}

 SkString GrDrawPathOp::dumpInfo() const {
     SkString string;
     string.printf("PATH: 0x%p", fPath.get());
     string.append(INHERITED::dumpInfo());
     return string;
 }

 GrPipeline::InitArgs GrDrawPathOpBase::pipelineInitArgs(const GrOpFlushState& state) {
     static constexpr GrUserStencilSettings kCoverPass{
             GrUserStencilSettings::StaticInit<
                     0x0000,
                     GrUserStencilTest::kNotEqual,
                     0xffff,
                     GrUserStencilOp::kZero,
                     GrUserStencilOp::kKeep,
                     0xffff>()
     };
     GrPipeline::InitArgs args;
     args.fFlags = fPipelineSRGBFlags;
     if (GrAATypeIsHW(fAAType)) {
         args.fFlags |= GrPipeline::kHWAntialias_Flag;
     }
     args.fUserStencil = &kCoverPass;
     args.fProxy = state.drawOpArgs().fProxy;
     args.fCaps = &state.caps();
     args.fResourceProvider = state.resourceProvider();
     args.fDstProxy = state.drawOpArgs().fDstProxy;
     return args;
 }

 //////////////////////////////////////////////////////////////////////////////

 void init_stencil_pass_settings(const GrOpFlushState& flushState,
                                 GrPathRendering::FillType fillType, GrStencilSettings* stencil) {
     const GrAppliedClip* appliedClip = flushState.drawOpArgs().fAppliedClip;
     bool stencilClip = appliedClip && appliedClip->hasStencilClip();
     stencil->reset(GrPathRendering::GetStencilPassSettings(fillType), stencilClip,
                    flushState.drawOpArgs().renderTarget()->renderTargetPriv().numStencilBits());
 }

 //////////////////////////////////////////////////////////////////////////////

 void GrDrawPathOp::onExecute(GrOpFlushState* state) {
     GrPipeline pipeline(this->pipelineInitArgs(*state), this->detachProcessors(),
                         state->detachAppliedClip());
     sk_sp<GrPathProcessor> pathProc(GrPathProcessor::Create(this->color(), this->viewMatrix()));

     GrStencilSettings stencil;
     init_stencil_pass_settings(*state, this->fillType(), &stencil);
     state->gpu()->pathRendering()->drawPath(pipeline, *pathProc, stencil, fPath.get());
 }

 //////////////////////////////////////////////////////////////////////////////

 SkString GrDrawPathRangeOp::dumpInfo() const {
     SkString string;
     string.printf("RANGE: 0x%p COUNTS: [", fPathRange.get());
     for (DrawList::Iter iter(fDraws); iter.get(); iter.next()) {
         string.appendf("%d, ", iter.get()->fInstanceData->count());
     }
     string.remove(string.size() - 2, 2);
     string.append("]");
     string.append(INHERITED::dumpInfo());
     return string;
 }

 GrDrawPathRangeOp::GrDrawPathRangeOp(const SkMatrix& viewMatrix, SkScalar scale, SkScalar x,
                                      SkScalar y, GrPaint&& paint, GrPathRendering::FillType fill,
                                      GrAAType aaType, GrPathRange* range,
                                      const InstanceData* instanceData, const SkRect& bounds)
         : INHERITED(ClassID(), viewMatrix, std::move(paint), fill, aaType)
         , fPathRange(range)
         , fTotalPathCount(instanceData->count())
         , fScale(scale) {
     fDraws.addToHead()->set(instanceData, x, y);
     this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo);
 }

 static void pre_translate_transform_values(const float* xforms,
                                            GrPathRendering::PathTransformType type, int count,
                                            SkScalar x, SkScalar y, float* dst);

 bool GrDrawPathRangeOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
     GrDrawPathRangeOp* that = t->cast<GrDrawPathRangeOp>();
     if (this->fPathRange.get() != that->fPathRange.get() ||
         this->transformType() != that->transformType() || this->fScale != that->fScale ||
         this->color() != that->color() || !this->viewMatrix().cheapEqualTo(that->viewMatrix())) {
         return false;
     }
     if (this->processors() != that->processors()) {
         return false;
     }
     if (this->pipelineSRGBFlags() != that->pipelineSRGBFlags()) {
         return false;
     }
     switch (fDraws.head()->fInstanceData->transformType()) {
         case GrPathRendering::kNone_PathTransformType:
             if (this->fDraws.head()->fX != that->fDraws.head()->fX ||
                 this->fDraws.head()->fY != that->fDraws.head()->fY) {
                 return false;
             }
             break;
         case GrPathRendering::kTranslateX_PathTransformType:
             if (this->fDraws.head()->fY != that->fDraws.head()->fY) {
                 return false;
             }
             break;
         case GrPathRendering::kTranslateY_PathTransformType:
             if (this->fDraws.head()->fX != that->fDraws.head()->fX) {
                 return false;
             }
             break;
         default:
             break;
     }
     // TODO: Check some other things here. (winding, opaque, pathProc color, vm, ...)
     // Try to combine this call with the previous DrawPaths. We do this by stenciling all the
     // paths together and then covering them in a single pass. This is not equivalent to two
     // separate draw calls, so we can only do it if there is no blending (no overlap would also
     // work). Note that it's also possible for overlapping paths to cancel each other's winding
     // numbers, and we only partially account for this by not allowing even/odd paths to be
     // combined. (Glyphs in the same font tend to wind the same direction so it works out OK.)

     if (GrPathRendering::kWinding_FillType != this->fillType() ||
         GrPathRendering::kWinding_FillType != that->fillType()) {
         return false;
     }
     if (!this->processorAnalysis().canCombineOverlappedStencilAndCover()) {
         return false;
     }
     fTotalPathCount += that->fTotalPathCount;
     while (Draw* head = that->fDraws.head()) {
         Draw* draw = fDraws.addToTail();
         draw->fInstanceData.reset(head->fInstanceData.release());
         draw->fX = head->fX;
         draw->fY = head->fY;
         that->fDraws.popHead();
     }
     this->joinBounds(*that);
     return true;
 }

 void GrDrawPathRangeOp::onExecute(GrOpFlushState* state) {
     const Draw& head = *fDraws.head();

     SkMatrix drawMatrix(this->viewMatrix());
     drawMatrix.preScale(fScale, fScale);
     drawMatrix.preTranslate(head.fX, head.fY);

     SkMatrix localMatrix;
     localMatrix.setScale(fScale, fScale);
     localMatrix.preTranslate(head.fX, head.fY);

     sk_sp<GrPathProcessor> pathProc(
             GrPathProcessor::Create(this->color(), drawMatrix, localMatrix));

     GrPipeline pipeline(this->pipelineInitArgs(*state), this->detachProcessors(),
                         state->detachAppliedClip());
     GrStencilSettings stencil;
     init_stencil_pass_settings(*state, this->fillType(), &stencil);
     if (fDraws.count() == 1) {
         const InstanceData& instances = *head.fInstanceData;
         state->gpu()->pathRendering()->drawPaths(pipeline,
                                                  *pathProc,
                                                  stencil,
                                                  fPathRange.get(),
                                                  instances.indices(),
                                                  GrPathRange::kU16_PathIndexType,
                                                  instances.transformValues(),
                                                  instances.transformType(),
                                                  instances.count());
     } else {
         int floatsPerTransform = GrPathRendering::PathTransformSize(this->transformType());
         SkAutoSTMalloc<4096, float> transformStorage(floatsPerTransform * fTotalPathCount);
         SkAutoSTMalloc<2048, uint16_t> indexStorage(fTotalPathCount);
         int idx = 0;
         for (DrawList::Iter iter(fDraws); iter.get(); iter.next()) {
             const Draw& draw = *iter.get();
             const InstanceData& instances = *draw.fInstanceData;
             memcpy(&indexStorage[idx], instances.indices(), instances.count() * sizeof(uint16_t));
             pre_translate_transform_values(instances.transformValues(), this->transformType(),
                                            instances.count(), draw.fX - head.fX, draw.fY - head.fY,
                                            &transformStorage[floatsPerTransform * idx]);
             idx += instances.count();

             // TODO: Support mismatched transform types if we start using more types other than 2D.
             SkASSERT(instances.transformType() == this->transformType());
         }
         SkASSERT(idx == fTotalPathCount);

         state->gpu()->pathRendering()->drawPaths(pipeline,
                                                  *pathProc,
                                                  stencil,
                                                  fPathRange.get(),
                                                  indexStorage,
                                                  GrPathRange::kU16_PathIndexType,
                                                  transformStorage,
                                                  this->transformType(),
                                                  fTotalPathCount);
     }
 }

 inline void pre_translate_transform_values(const float* xforms,
                                            GrPathRendering::PathTransformType type, int count,
                                            SkScalar x, SkScalar y, float* dst) {
     if (0 == x && 0 == y) {
         memcpy(dst, xforms, count * GrPathRendering::PathTransformSize(type) * sizeof(float));
         return;
     }
     switch (type) {
         case GrPathRendering::kNone_PathTransformType:
             SK_ABORT("Cannot pre-translate kNone_PathTransformType.");
             break;
         case GrPathRendering::kTranslateX_PathTransformType:
             SkASSERT(0 == y);
             for (int i = 0; i < count; i++) {
                 dst[i] = xforms[i] + x;
             }
             break;
         case GrPathRendering::kTranslateY_PathTransformType:
             SkASSERT(0 == x);
             for (int i = 0; i < count; i++) {
                 dst[i] = xforms[i] + y;
             }
             break;
         case GrPathRendering::kTranslate_PathTransformType:
             for (int i = 0; i < 2 * count; i += 2) {
                 dst[i] = xforms[i] + x;
                 dst[i + 1] = xforms[i + 1] + y;
             }
             break;
         case GrPathRendering::kAffine_PathTransformType:
             for (int i = 0; i < 6 * count; i += 6) {
                 dst[i] = xforms[i];
                 dst[i + 1] = xforms[i + 1];
                 dst[i + 2] = xforms[i] * x + xforms[i + 1] * y + xforms[i + 2];
                 dst[i + 3] = xforms[i + 3];
                 dst[i + 4] = xforms[i + 4];
                 dst[i + 5] = xforms[i + 3] * x + xforms[i + 4] * y + xforms[i + 5];
             }
             break;
         default:
             SK_ABORT("Unknown transform type.");
             break;
     }
 }
	/*
	* Copyright 2015 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "GrDrawPathOp.h"
	#include "GrAppliedClip.h"
	#include "GrRenderTargetContext.h"
	#include "GrRenderTargetPriv.h"
	#include "SkTemplates.h"

	GrDrawPathOpBase::GrDrawPathOpBase(uint32_t classID, const SkMatrix& viewMatrix, GrPaint&& paint,
	GrPathRendering::FillType fill, GrAAType aaType)
	: INHERITED(classID)
	, fViewMatrix(viewMatrix)
	, fInputColor(paint.getColor())
	, fFillType(fill)
	, fAAType(aaType)
	, fPipelineSRGBFlags(GrPipeline::SRGBFlagsFromPaint(paint))
	, fProcessorSet(std::move(paint)) {}

	SkString GrDrawPathOp::dumpInfo() const {
	SkString string;
	string.printf("PATH: 0x%p", fPath.get());
	string.append(INHERITED::dumpInfo());
	return string;
	}

	GrPipeline::InitArgs GrDrawPathOpBase::pipelineInitArgs(const GrOpFlushState& state) {
	static constexpr GrUserStencilSettings kCoverPass{
	GrUserStencilSettings::StaticInit<
	0x0000,
	GrUserStencilTest::kNotEqual,
	0xffff,
	GrUserStencilOp::kZero,
	GrUserStencilOp::kKeep,
	0xffff>()
	};
	GrPipeline::InitArgs args;
	args.fFlags = fPipelineSRGBFlags;
	if (GrAATypeIsHW(fAAType)) {
	args.fFlags \|= GrPipeline::kHWAntialias_Flag;
	}
	args.fUserStencil = &kCoverPass;
	args.fProxy = state.drawOpArgs().fProxy;
	args.fCaps = &state.caps();
	args.fResourceProvider = state.resourceProvider();
	args.fDstProxy = state.drawOpArgs().fDstProxy;
	return args;
	}

	//////////////////////////////////////////////////////////////////////////////

	void init_stencil_pass_settings(const GrOpFlushState& flushState,
	GrPathRendering::FillType fillType, GrStencilSettings* stencil) {
	const GrAppliedClip* appliedClip = flushState.drawOpArgs().fAppliedClip;
	bool stencilClip = appliedClip && appliedClip->hasStencilClip();
	stencil->reset(GrPathRendering::GetStencilPassSettings(fillType), stencilClip,
	flushState.drawOpArgs().renderTarget()->renderTargetPriv().numStencilBits());
	}

	//////////////////////////////////////////////////////////////////////////////

	void GrDrawPathOp::onExecute(GrOpFlushState* state) {
	GrPipeline pipeline(this->pipelineInitArgs(*state), this->detachProcessors(),
	state->detachAppliedClip());
	sk_sp<GrPathProcessor> pathProc(GrPathProcessor::Create(this->color(), this->viewMatrix()));

	GrStencilSettings stencil;
	init_stencil_pass_settings(*state, this->fillType(), &stencil);
	state->gpu()->pathRendering()->drawPath(pipeline, *pathProc, stencil, fPath.get());
	}

	//////////////////////////////////////////////////////////////////////////////

	SkString GrDrawPathRangeOp::dumpInfo() const {
	SkString string;
	string.printf("RANGE: 0x%p COUNTS: [", fPathRange.get());
	for (DrawList::Iter iter(fDraws); iter.get(); iter.next()) {
	string.appendf("%d, ", iter.get()->fInstanceData->count());
	}
	string.remove(string.size() - 2, 2);
	string.append("]");
	string.append(INHERITED::dumpInfo());
	return string;
	}

	GrDrawPathRangeOp::GrDrawPathRangeOp(const SkMatrix& viewMatrix, SkScalar scale, SkScalar x,
	SkScalar y, GrPaint&& paint, GrPathRendering::FillType fill,
	GrAAType aaType, GrPathRange* range,
	const InstanceData* instanceData, const SkRect& bounds)
	: INHERITED(ClassID(), viewMatrix, std::move(paint), fill, aaType)
	, fPathRange(range)
	, fTotalPathCount(instanceData->count())
	, fScale(scale) {
	fDraws.addToHead()->set(instanceData, x, y);
	this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo);
	}

	static void pre_translate_transform_values(const float* xforms,
	GrPathRendering::PathTransformType type, int count,
	SkScalar x, SkScalar y, float* dst);

	bool GrDrawPathRangeOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
	GrDrawPathRangeOp* that = t->cast<GrDrawPathRangeOp>();
	if (this->fPathRange.get() != that->fPathRange.get() \|\|
	this->transformType() != that->transformType() \|\| this->fScale != that->fScale \|\|
	this->color() != that->color() \|\| !this->viewMatrix().cheapEqualTo(that->viewMatrix())) {
	return false;
	}
	if (this->processors() != that->processors()) {
	return false;
	}
	if (this->pipelineSRGBFlags() != that->pipelineSRGBFlags()) {
	return false;
	}
	switch (fDraws.head()->fInstanceData->transformType()) {
	case GrPathRendering::kNone_PathTransformType:
	if (this->fDraws.head()->fX != that->fDraws.head()->fX \|\|
	this->fDraws.head()->fY != that->fDraws.head()->fY) {
	return false;
	}
	break;
	case GrPathRendering::kTranslateX_PathTransformType:
	if (this->fDraws.head()->fY != that->fDraws.head()->fY) {
	return false;
	}
	break;
	case GrPathRendering::kTranslateY_PathTransformType:
	if (this->fDraws.head()->fX != that->fDraws.head()->fX) {
	return false;
	}
	break;
	default:
	break;
	}
	// TODO: Check some other things here. (winding, opaque, pathProc color, vm, ...)
	// Try to combine this call with the previous DrawPaths. We do this by stenciling all the
	// paths together and then covering them in a single pass. This is not equivalent to two
	// separate draw calls, so we can only do it if there is no blending (no overlap would also
	// work). Note that it's also possible for overlapping paths to cancel each other's winding
	// numbers, and we only partially account for this by not allowing even/odd paths to be
	// combined. (Glyphs in the same font tend to wind the same direction so it works out OK.)

	if (GrPathRendering::kWinding_FillType != this->fillType() \|\|
	GrPathRendering::kWinding_FillType != that->fillType()) {
	return false;
	}
	if (!this->processorAnalysis().canCombineOverlappedStencilAndCover()) {
	return false;
	}
	fTotalPathCount += that->fTotalPathCount;
	while (Draw* head = that->fDraws.head()) {
	Draw* draw = fDraws.addToTail();
	draw->fInstanceData.reset(head->fInstanceData.release());
	draw->fX = head->fX;
	draw->fY = head->fY;
	that->fDraws.popHead();
	}
	this->joinBounds(*that);
	return true;
	}

	void GrDrawPathRangeOp::onExecute(GrOpFlushState* state) {
	const Draw& head = *fDraws.head();

	SkMatrix drawMatrix(this->viewMatrix());
	drawMatrix.preScale(fScale, fScale);
	drawMatrix.preTranslate(head.fX, head.fY);

	SkMatrix localMatrix;
	localMatrix.setScale(fScale, fScale);
	localMatrix.preTranslate(head.fX, head.fY);

	sk_sp<GrPathProcessor> pathProc(
	GrPathProcessor::Create(this->color(), drawMatrix, localMatrix));

	GrPipeline pipeline(this->pipelineInitArgs(*state), this->detachProcessors(),
	state->detachAppliedClip());
	GrStencilSettings stencil;
	init_stencil_pass_settings(*state, this->fillType(), &stencil);
	if (fDraws.count() == 1) {
	const InstanceData& instances = *head.fInstanceData;
	state->gpu()->pathRendering()->drawPaths(pipeline,
	*pathProc,
	stencil,
	fPathRange.get(),
	instances.indices(),
	GrPathRange::kU16_PathIndexType,
	instances.transformValues(),
	instances.transformType(),
	instances.count());
	} else {
	int floatsPerTransform = GrPathRendering::PathTransformSize(this->transformType());
	SkAutoSTMalloc<4096, float> transformStorage(floatsPerTransform * fTotalPathCount);
	SkAutoSTMalloc<2048, uint16_t> indexStorage(fTotalPathCount);
	int idx = 0;
	for (DrawList::Iter iter(fDraws); iter.get(); iter.next()) {
	const Draw& draw = *iter.get();
	const InstanceData& instances = *draw.fInstanceData;
	memcpy(&indexStorage[idx], instances.indices(), instances.count() * sizeof(uint16_t));
	pre_translate_transform_values(instances.transformValues(), this->transformType(),
	instances.count(), draw.fX - head.fX, draw.fY - head.fY,
	&transformStorage[floatsPerTransform * idx]);
	idx += instances.count();

	// TODO: Support mismatched transform types if we start using more types other than 2D.
	SkASSERT(instances.transformType() == this->transformType());
	}
	SkASSERT(idx == fTotalPathCount);

	state->gpu()->pathRendering()->drawPaths(pipeline,
	*pathProc,
	stencil,
	fPathRange.get(),
	indexStorage,
	GrPathRange::kU16_PathIndexType,
	transformStorage,
	this->transformType(),
	fTotalPathCount);
	}
	}

	inline void pre_translate_transform_values(const float* xforms,
	GrPathRendering::PathTransformType type, int count,
	SkScalar x, SkScalar y, float* dst) {
	if (0 == x && 0 == y) {
	memcpy(dst, xforms, count * GrPathRendering::PathTransformSize(type) * sizeof(float));
	return;
	}
	switch (type) {
	case GrPathRendering::kNone_PathTransformType:
	SK_ABORT("Cannot pre-translate kNone_PathTransformType.");
	break;
	case GrPathRendering::kTranslateX_PathTransformType:
	SkASSERT(0 == y);
	for (int i = 0; i < count; i++) {
	dst[i] = xforms[i] + x;
	}
	break;
	case GrPathRendering::kTranslateY_PathTransformType:
	SkASSERT(0 == x);
	for (int i = 0; i < count; i++) {
	dst[i] = xforms[i] + y;
	}
	break;
	case GrPathRendering::kTranslate_PathTransformType:
	for (int i = 0; i < 2 * count; i += 2) {
	dst[i] = xforms[i] + x;
	dst[i + 1] = xforms[i + 1] + y;
	}
	break;
	case GrPathRendering::kAffine_PathTransformType:
	for (int i = 0; i < 6 * count; i += 6) {
	dst[i] = xforms[i];
	dst[i + 1] = xforms[i + 1];
	dst[i + 2] = xforms[i] * x + xforms[i + 1] * y + xforms[i + 2];
	dst[i + 3] = xforms[i + 3];
	dst[i + 4] = xforms[i + 4];
	dst[i + 5] = xforms[i + 3] * x + xforms[i + 4] * y + xforms[i + 5];
	}
	break;
	default:
	SK_ABORT("Unknown transform type.");
	break;
	}
	}