| |
| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| |
| #include "GrDrawTarget.h" |
| #include "GrContext.h" |
| #include "GrDrawTargetCaps.h" |
| #include "GrPath.h" |
| #include "GrRenderTarget.h" |
| #include "GrTexture.h" |
| #include "GrVertexBuffer.h" |
| |
| #include "SkStrokeRec.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::DrawInfo& GrDrawTarget::DrawInfo::operator =(const DrawInfo& di) { |
| fPrimitiveType = di.fPrimitiveType; |
| fStartVertex = di.fStartVertex; |
| fStartIndex = di.fStartIndex; |
| fVertexCount = di.fVertexCount; |
| fIndexCount = di.fIndexCount; |
| |
| fInstanceCount = di.fInstanceCount; |
| fVerticesPerInstance = di.fVerticesPerInstance; |
| fIndicesPerInstance = di.fIndicesPerInstance; |
| |
| if (NULL != di.fDevBounds) { |
| SkASSERT(di.fDevBounds == &di.fDevBoundsStorage); |
| fDevBoundsStorage = di.fDevBoundsStorage; |
| fDevBounds = &fDevBoundsStorage; |
| } else { |
| fDevBounds = NULL; |
| } |
| |
| fDstCopy = di.fDstCopy; |
| |
| return *this; |
| } |
| |
| #ifdef SK_DEBUG |
| bool GrDrawTarget::DrawInfo::isInstanced() const { |
| if (fInstanceCount > 0) { |
| SkASSERT(0 == fIndexCount % fIndicesPerInstance); |
| SkASSERT(0 == fVertexCount % fVerticesPerInstance); |
| SkASSERT(fIndexCount / fIndicesPerInstance == fInstanceCount); |
| SkASSERT(fVertexCount / fVerticesPerInstance == fInstanceCount); |
| // there is no way to specify a non-zero start index to drawIndexedInstances(). |
| SkASSERT(0 == fStartIndex); |
| return true; |
| } else { |
| SkASSERT(!fVerticesPerInstance); |
| SkASSERT(!fIndicesPerInstance); |
| return false; |
| } |
| } |
| #endif |
| |
| void GrDrawTarget::DrawInfo::adjustInstanceCount(int instanceOffset) { |
| SkASSERT(this->isInstanced()); |
| SkASSERT(instanceOffset + fInstanceCount >= 0); |
| fInstanceCount += instanceOffset; |
| fVertexCount = fVerticesPerInstance * fInstanceCount; |
| fIndexCount = fIndicesPerInstance * fInstanceCount; |
| } |
| |
| void GrDrawTarget::DrawInfo::adjustStartVertex(int vertexOffset) { |
| fStartVertex += vertexOffset; |
| SkASSERT(fStartVertex >= 0); |
| } |
| |
| void GrDrawTarget::DrawInfo::adjustStartIndex(int indexOffset) { |
| SkASSERT(this->isIndexed()); |
| fStartIndex += indexOffset; |
| SkASSERT(fStartIndex >= 0); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| #define DEBUG_INVAL_BUFFER 0xdeadcafe |
| #define DEBUG_INVAL_START_IDX -1 |
| |
| GrDrawTarget::GrDrawTarget(GrContext* context) |
| : fClip(NULL) |
| , fContext(context) { |
| SkASSERT(NULL != context); |
| |
| fDrawState = &fDefaultDrawState; |
| // We assume that fDrawState always owns a ref to the object it points at. |
| fDefaultDrawState.ref(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.push_back(); |
| #ifdef SK_DEBUG |
| geoSrc.fVertexCount = DEBUG_INVAL_START_IDX; |
| geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; |
| geoSrc.fIndexCount = DEBUG_INVAL_START_IDX; |
| geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| } |
| |
| GrDrawTarget::~GrDrawTarget() { |
| SkASSERT(1 == fGeoSrcStateStack.count()); |
| SkDEBUGCODE(GeometrySrcState& geoSrc = fGeoSrcStateStack.back()); |
| SkASSERT(kNone_GeometrySrcType == geoSrc.fIndexSrc); |
| SkASSERT(kNone_GeometrySrcType == geoSrc.fVertexSrc); |
| fDrawState->unref(); |
| } |
| |
| void GrDrawTarget::releaseGeometry() { |
| int popCnt = fGeoSrcStateStack.count() - 1; |
| while (popCnt) { |
| this->popGeometrySource(); |
| --popCnt; |
| } |
| this->resetVertexSource(); |
| this->resetIndexSource(); |
| } |
| |
| void GrDrawTarget::setClip(const GrClipData* clip) { |
| clipWillBeSet(clip); |
| fClip = clip; |
| } |
| |
| const GrClipData* GrDrawTarget::getClip() const { |
| return fClip; |
| } |
| |
| void GrDrawTarget::setDrawState(GrDrawState* drawState) { |
| SkASSERT(NULL != fDrawState); |
| if (NULL == drawState) { |
| drawState = &fDefaultDrawState; |
| } |
| if (fDrawState != drawState) { |
| fDrawState->unref(); |
| drawState->ref(); |
| fDrawState = drawState; |
| } |
| } |
| |
| bool GrDrawTarget::reserveVertexSpace(size_t vertexSize, |
| int vertexCount, |
| void** vertices) { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| bool acquired = false; |
| if (vertexCount > 0) { |
| SkASSERT(NULL != vertices); |
| this->releasePreviousVertexSource(); |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| |
| acquired = this->onReserveVertexSpace(vertexSize, |
| vertexCount, |
| vertices); |
| } |
| if (acquired) { |
| geoSrc.fVertexSrc = kReserved_GeometrySrcType; |
| geoSrc.fVertexCount = vertexCount; |
| geoSrc.fVertexSize = vertexSize; |
| } else if (NULL != vertices) { |
| *vertices = NULL; |
| } |
| return acquired; |
| } |
| |
| bool GrDrawTarget::reserveIndexSpace(int indexCount, |
| void** indices) { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| bool acquired = false; |
| if (indexCount > 0) { |
| SkASSERT(NULL != indices); |
| this->releasePreviousIndexSource(); |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| |
| acquired = this->onReserveIndexSpace(indexCount, indices); |
| } |
| if (acquired) { |
| geoSrc.fIndexSrc = kReserved_GeometrySrcType; |
| geoSrc.fIndexCount = indexCount; |
| } else if (NULL != indices) { |
| *indices = NULL; |
| } |
| return acquired; |
| |
| } |
| |
| bool GrDrawTarget::reserveVertexAndIndexSpace(int vertexCount, |
| int indexCount, |
| void** vertices, |
| void** indices) { |
| size_t vertexSize = this->drawState()->getVertexSize(); |
| this->willReserveVertexAndIndexSpace(vertexCount, indexCount); |
| if (vertexCount) { |
| if (!this->reserveVertexSpace(vertexSize, vertexCount, vertices)) { |
| if (indexCount) { |
| this->resetIndexSource(); |
| } |
| return false; |
| } |
| } |
| if (indexCount) { |
| if (!this->reserveIndexSpace(indexCount, indices)) { |
| if (vertexCount) { |
| this->resetVertexSource(); |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool GrDrawTarget::geometryHints(int32_t* vertexCount, |
| int32_t* indexCount) const { |
| if (NULL != vertexCount) { |
| *vertexCount = -1; |
| } |
| if (NULL != indexCount) { |
| *indexCount = -1; |
| } |
| return false; |
| } |
| |
| void GrDrawTarget::releasePreviousVertexSource() { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| switch (geoSrc.fVertexSrc) { |
| case kNone_GeometrySrcType: |
| break; |
| case kArray_GeometrySrcType: |
| this->releaseVertexArray(); |
| break; |
| case kReserved_GeometrySrcType: |
| this->releaseReservedVertexSpace(); |
| break; |
| case kBuffer_GeometrySrcType: |
| geoSrc.fVertexBuffer->unref(); |
| #ifdef SK_DEBUG |
| geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| break; |
| default: |
| GrCrash("Unknown Vertex Source Type."); |
| break; |
| } |
| } |
| |
| void GrDrawTarget::releasePreviousIndexSource() { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| switch (geoSrc.fIndexSrc) { |
| case kNone_GeometrySrcType: // these two don't require |
| break; |
| case kArray_GeometrySrcType: |
| this->releaseIndexArray(); |
| break; |
| case kReserved_GeometrySrcType: |
| this->releaseReservedIndexSpace(); |
| break; |
| case kBuffer_GeometrySrcType: |
| geoSrc.fIndexBuffer->unref(); |
| #ifdef SK_DEBUG |
| geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| break; |
| default: |
| GrCrash("Unknown Index Source Type."); |
| break; |
| } |
| } |
| |
| void GrDrawTarget::setVertexSourceToArray(const void* vertexArray, |
| int vertexCount) { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kArray_GeometrySrcType; |
| geoSrc.fVertexSize = this->drawState()->getVertexSize(); |
| geoSrc.fVertexCount = vertexCount; |
| this->onSetVertexSourceToArray(vertexArray, vertexCount); |
| } |
| |
| void GrDrawTarget::setIndexSourceToArray(const void* indexArray, |
| int indexCount) { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kArray_GeometrySrcType; |
| geoSrc.fIndexCount = indexCount; |
| this->onSetIndexSourceToArray(indexArray, indexCount); |
| } |
| |
| void GrDrawTarget::setVertexSourceToBuffer(const GrVertexBuffer* buffer) { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kBuffer_GeometrySrcType; |
| geoSrc.fVertexBuffer = buffer; |
| buffer->ref(); |
| geoSrc.fVertexSize = this->drawState()->getVertexSize(); |
| } |
| |
| void GrDrawTarget::setIndexSourceToBuffer(const GrIndexBuffer* buffer) { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kBuffer_GeometrySrcType; |
| geoSrc.fIndexBuffer = buffer; |
| buffer->ref(); |
| } |
| |
| void GrDrawTarget::resetVertexSource() { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| } |
| |
| void GrDrawTarget::resetIndexSource() { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| } |
| |
| void GrDrawTarget::pushGeometrySource() { |
| this->geometrySourceWillPush(); |
| GeometrySrcState& newState = fGeoSrcStateStack.push_back(); |
| newState.fIndexSrc = kNone_GeometrySrcType; |
| newState.fVertexSrc = kNone_GeometrySrcType; |
| #ifdef SK_DEBUG |
| newState.fVertexCount = ~0; |
| newState.fVertexBuffer = (GrVertexBuffer*)~0; |
| newState.fIndexCount = ~0; |
| newState.fIndexBuffer = (GrIndexBuffer*)~0; |
| #endif |
| } |
| |
| void GrDrawTarget::popGeometrySource() { |
| // if popping last element then pops are unbalanced with pushes |
| SkASSERT(fGeoSrcStateStack.count() > 1); |
| |
| this->geometrySourceWillPop(fGeoSrcStateStack.fromBack(1)); |
| this->releasePreviousVertexSource(); |
| this->releasePreviousIndexSource(); |
| fGeoSrcStateStack.pop_back(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::checkDraw(GrPrimitiveType type, int startVertex, |
| int startIndex, int vertexCount, |
| int indexCount) const { |
| const GrDrawState& drawState = this->getDrawState(); |
| #ifdef SK_DEBUG |
| const GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| int maxVertex = startVertex + vertexCount; |
| int maxValidVertex; |
| switch (geoSrc.fVertexSrc) { |
| case kNone_GeometrySrcType: |
| GrCrash("Attempting to draw without vertex src."); |
| case kReserved_GeometrySrcType: // fallthrough |
| case kArray_GeometrySrcType: |
| maxValidVertex = geoSrc.fVertexCount; |
| break; |
| case kBuffer_GeometrySrcType: |
| maxValidVertex = static_cast<int>(geoSrc.fVertexBuffer->sizeInBytes() / geoSrc.fVertexSize); |
| break; |
| } |
| if (maxVertex > maxValidVertex) { |
| GrCrash("Drawing outside valid vertex range."); |
| } |
| if (indexCount > 0) { |
| int maxIndex = startIndex + indexCount; |
| int maxValidIndex; |
| switch (geoSrc.fIndexSrc) { |
| case kNone_GeometrySrcType: |
| GrCrash("Attempting to draw indexed geom without index src."); |
| case kReserved_GeometrySrcType: // fallthrough |
| case kArray_GeometrySrcType: |
| maxValidIndex = geoSrc.fIndexCount; |
| break; |
| case kBuffer_GeometrySrcType: |
| maxValidIndex = static_cast<int>(geoSrc.fIndexBuffer->sizeInBytes() / sizeof(uint16_t)); |
| break; |
| } |
| if (maxIndex > maxValidIndex) { |
| GrCrash("Index reads outside valid index range."); |
| } |
| } |
| |
| SkASSERT(NULL != drawState.getRenderTarget()); |
| |
| for (int s = 0; s < drawState.numColorStages(); ++s) { |
| const GrEffectRef& effect = *drawState.getColorStage(s).getEffect(); |
| int numTextures = effect->numTextures(); |
| for (int t = 0; t < numTextures; ++t) { |
| GrTexture* texture = effect->texture(t); |
| SkASSERT(texture->asRenderTarget() != drawState.getRenderTarget()); |
| } |
| } |
| for (int s = 0; s < drawState.numCoverageStages(); ++s) { |
| const GrEffectRef& effect = *drawState.getCoverageStage(s).getEffect(); |
| int numTextures = effect->numTextures(); |
| for (int t = 0; t < numTextures; ++t) { |
| GrTexture* texture = effect->texture(t); |
| SkASSERT(texture->asRenderTarget() != drawState.getRenderTarget()); |
| } |
| } |
| |
| SkASSERT(drawState.validateVertexAttribs()); |
| #endif |
| if (NULL == drawState.getRenderTarget()) { |
| return false; |
| } |
| return true; |
| } |
| |
| bool GrDrawTarget::setupDstReadIfNecessary(GrDeviceCoordTexture* dstCopy, const SkRect* drawBounds) { |
| if (this->caps()->dstReadInShaderSupport() || !this->getDrawState().willEffectReadDstColor()) { |
| return true; |
| } |
| GrRenderTarget* rt = this->drawState()->getRenderTarget(); |
| SkIRect copyRect; |
| const GrClipData* clip = this->getClip(); |
| clip->getConservativeBounds(rt, ©Rect); |
| |
| if (NULL != drawBounds) { |
| SkIRect drawIBounds; |
| drawBounds->roundOut(&drawIBounds); |
| if (!copyRect.intersect(drawIBounds)) { |
| #ifdef SK_DEBUG |
| GrPrintf("Missed an early reject. Bailing on draw from setupDstReadIfNecessary.\n"); |
| #endif |
| return false; |
| } |
| } else { |
| #ifdef SK_DEBUG |
| //GrPrintf("No dev bounds when dst copy is made.\n"); |
| #endif |
| } |
| |
| // MSAA consideration: When there is support for reading MSAA samples in the shader we could |
| // have per-sample dst values by making the copy multisampled. |
| GrTextureDesc desc; |
| this->initCopySurfaceDstDesc(rt, &desc); |
| desc.fWidth = copyRect.width(); |
| desc.fHeight = copyRect.height(); |
| |
| GrAutoScratchTexture ast(fContext, desc, GrContext::kApprox_ScratchTexMatch); |
| |
| if (NULL == ast.texture()) { |
| GrPrintf("Failed to create temporary copy of destination texture.\n"); |
| return false; |
| } |
| SkIPoint dstPoint = {0, 0}; |
| if (this->copySurface(ast.texture(), rt, copyRect, dstPoint)) { |
| dstCopy->setTexture(ast.texture()); |
| dstCopy->setOffset(copyRect.fLeft, copyRect.fTop); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| void GrDrawTarget::drawIndexed(GrPrimitiveType type, |
| int startVertex, |
| int startIndex, |
| int vertexCount, |
| int indexCount, |
| const SkRect* devBounds) { |
| if (indexCount > 0 && this->checkDraw(type, startVertex, startIndex, vertexCount, indexCount)) { |
| DrawInfo info; |
| info.fPrimitiveType = type; |
| info.fStartVertex = startVertex; |
| info.fStartIndex = startIndex; |
| info.fVertexCount = vertexCount; |
| info.fIndexCount = indexCount; |
| |
| info.fInstanceCount = 0; |
| info.fVerticesPerInstance = 0; |
| info.fIndicesPerInstance = 0; |
| |
| if (NULL != devBounds) { |
| info.setDevBounds(*devBounds); |
| } |
| // TODO: We should continue with incorrect blending. |
| if (!this->setupDstReadIfNecessary(&info)) { |
| return; |
| } |
| this->onDraw(info); |
| } |
| } |
| |
| void GrDrawTarget::drawNonIndexed(GrPrimitiveType type, |
| int startVertex, |
| int vertexCount, |
| const SkRect* devBounds) { |
| if (vertexCount > 0 && this->checkDraw(type, startVertex, -1, vertexCount, -1)) { |
| DrawInfo info; |
| info.fPrimitiveType = type; |
| info.fStartVertex = startVertex; |
| info.fStartIndex = 0; |
| info.fVertexCount = vertexCount; |
| info.fIndexCount = 0; |
| |
| info.fInstanceCount = 0; |
| info.fVerticesPerInstance = 0; |
| info.fIndicesPerInstance = 0; |
| |
| if (NULL != devBounds) { |
| info.setDevBounds(*devBounds); |
| } |
| // TODO: We should continue with incorrect blending. |
| if (!this->setupDstReadIfNecessary(&info)) { |
| return; |
| } |
| this->onDraw(info); |
| } |
| } |
| |
| void GrDrawTarget::stencilPath(const GrPath* path, SkPath::FillType fill) { |
| // TODO: extract portions of checkDraw that are relevant to path stenciling. |
| SkASSERT(NULL != path); |
| SkASSERT(this->caps()->pathRenderingSupport()); |
| SkASSERT(!SkPath::IsInverseFillType(fill)); |
| this->onStencilPath(path, fill); |
| } |
| |
| void GrDrawTarget::drawPath(const GrPath* path, SkPath::FillType fill) { |
| // TODO: extract portions of checkDraw that are relevant to path rendering. |
| SkASSERT(NULL != path); |
| SkASSERT(this->caps()->pathRenderingSupport()); |
| const GrDrawState* drawState = &getDrawState(); |
| |
| SkRect devBounds; |
| if (SkPath::IsInverseFillType(fill)) { |
| devBounds = SkRect::MakeWH(SkIntToScalar(drawState->getRenderTarget()->width()), |
| SkIntToScalar(drawState->getRenderTarget()->height())); |
| } else { |
| devBounds = path->getBounds(); |
| } |
| SkMatrix viewM = drawState->getViewMatrix(); |
| viewM.mapRect(&devBounds); |
| |
| GrDeviceCoordTexture dstCopy; |
| if (!this->setupDstReadIfNecessary(&dstCopy, &devBounds)) { |
| return; |
| } |
| |
| this->onDrawPath(path, fill, dstCopy.texture() ? &dstCopy : NULL); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::willUseHWAALines() const { |
| // There is a conflict between using smooth lines and our use of premultiplied alpha. Smooth |
| // lines tweak the incoming alpha value but not in a premul-alpha way. So we only use them when |
| // our alpha is 0xff and tweaking the color for partial coverage is OK |
| if (!this->caps()->hwAALineSupport() || |
| !this->getDrawState().isHWAntialiasState()) { |
| return false; |
| } |
| GrDrawState::BlendOptFlags opts = this->getDrawState().getBlendOpts(); |
| return (GrDrawState::kDisableBlend_BlendOptFlag & opts) && |
| (GrDrawState::kCoverageAsAlpha_BlendOptFlag & opts); |
| } |
| |
| bool GrDrawTarget::canApplyCoverage() const { |
| // we can correctly apply coverage if a) we have dual source blending |
| // or b) one of our blend optimizations applies. |
| return this->caps()->dualSourceBlendingSupport() || |
| GrDrawState::kNone_BlendOpt != this->getDrawState().getBlendOpts(true); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrDrawTarget::drawIndexedInstances(GrPrimitiveType type, |
| int instanceCount, |
| int verticesPerInstance, |
| int indicesPerInstance, |
| const SkRect* devBounds) { |
| if (!verticesPerInstance || !indicesPerInstance) { |
| return; |
| } |
| |
| int maxInstancesPerDraw = this->indexCountInCurrentSource() / indicesPerInstance; |
| if (!maxInstancesPerDraw) { |
| return; |
| } |
| |
| DrawInfo info; |
| info.fPrimitiveType = type; |
| info.fStartIndex = 0; |
| info.fStartVertex = 0; |
| info.fIndicesPerInstance = indicesPerInstance; |
| info.fVerticesPerInstance = verticesPerInstance; |
| |
| // Set the same bounds for all the draws. |
| if (NULL != devBounds) { |
| info.setDevBounds(*devBounds); |
| } |
| // TODO: We should continue with incorrect blending. |
| if (!this->setupDstReadIfNecessary(&info)) { |
| return; |
| } |
| |
| while (instanceCount) { |
| info.fInstanceCount = GrMin(instanceCount, maxInstancesPerDraw); |
| info.fVertexCount = info.fInstanceCount * verticesPerInstance; |
| info.fIndexCount = info.fInstanceCount * indicesPerInstance; |
| |
| if (this->checkDraw(type, |
| info.fStartVertex, |
| info.fStartIndex, |
| info.fVertexCount, |
| info.fIndexCount)) { |
| this->onDraw(info); |
| } |
| info.fStartVertex += info.fVertexCount; |
| instanceCount -= info.fInstanceCount; |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| namespace { |
| |
| // position + (optional) texture coord |
| extern const GrVertexAttrib gBWRectPosUVAttribs[] = { |
| {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, |
| {kVec2f_GrVertexAttribType, sizeof(GrPoint), kLocalCoord_GrVertexAttribBinding} |
| }; |
| |
| void set_vertex_attributes(GrDrawState* drawState, bool hasUVs) { |
| if (hasUVs) { |
| drawState->setVertexAttribs<gBWRectPosUVAttribs>(2); |
| } else { |
| drawState->setVertexAttribs<gBWRectPosUVAttribs>(1); |
| } |
| } |
| |
| }; |
| |
| void GrDrawTarget::onDrawRect(const SkRect& rect, |
| const SkMatrix* matrix, |
| const SkRect* localRect, |
| const SkMatrix* localMatrix) { |
| |
| GrDrawState::AutoViewMatrixRestore avmr; |
| if (NULL != matrix) { |
| avmr.set(this->drawState(), *matrix); |
| } |
| |
| set_vertex_attributes(this->drawState(), NULL != localRect); |
| |
| AutoReleaseGeometry geo(this, 4, 0); |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| |
| size_t vsize = this->drawState()->getVertexSize(); |
| geo.positions()->setRectFan(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, vsize); |
| if (NULL != localRect) { |
| GrPoint* coords = GrTCast<GrPoint*>(GrTCast<intptr_t>(geo.vertices()) + |
| sizeof(GrPoint)); |
| coords->setRectFan(localRect->fLeft, localRect->fTop, |
| localRect->fRight, localRect->fBottom, |
| vsize); |
| if (NULL != localMatrix) { |
| localMatrix->mapPointsWithStride(coords, vsize, 4); |
| } |
| } |
| SkTLazy<SkRect> bounds; |
| if (this->getDrawState().willEffectReadDstColor()) { |
| bounds.init(); |
| this->getDrawState().getViewMatrix().mapRect(bounds.get(), rect); |
| } |
| |
| this->drawNonIndexed(kTriangleFan_GrPrimitiveType, 0, 4, bounds.getMaybeNull()); |
| } |
| |
| void GrDrawTarget::clipWillBeSet(const GrClipData* clipData) { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::AutoStateRestore::AutoStateRestore() { |
| fDrawTarget = NULL; |
| } |
| |
| GrDrawTarget::AutoStateRestore::AutoStateRestore(GrDrawTarget* target, |
| ASRInit init, |
| const SkMatrix* vm) { |
| fDrawTarget = NULL; |
| this->set(target, init, vm); |
| } |
| |
| GrDrawTarget::AutoStateRestore::~AutoStateRestore() { |
| if (NULL != fDrawTarget) { |
| fDrawTarget->setDrawState(fSavedState); |
| fSavedState->unref(); |
| } |
| } |
| |
| void GrDrawTarget::AutoStateRestore::set(GrDrawTarget* target, ASRInit init, const SkMatrix* vm) { |
| SkASSERT(NULL == fDrawTarget); |
| fDrawTarget = target; |
| fSavedState = target->drawState(); |
| SkASSERT(fSavedState); |
| fSavedState->ref(); |
| if (kReset_ASRInit == init) { |
| if (NULL == vm) { |
| // calls the default cons |
| fTempState.init(); |
| } else { |
| SkNEW_IN_TLAZY(&fTempState, GrDrawState, (*vm)); |
| } |
| } else { |
| SkASSERT(kPreserve_ASRInit == init); |
| if (NULL == vm) { |
| fTempState.set(*fSavedState); |
| } else { |
| SkNEW_IN_TLAZY(&fTempState, GrDrawState, (*fSavedState, *vm)); |
| } |
| } |
| target->setDrawState(fTempState.get()); |
| } |
| |
| bool GrDrawTarget::AutoStateRestore::setIdentity(GrDrawTarget* target, ASRInit init) { |
| SkASSERT(NULL == fDrawTarget); |
| fDrawTarget = target; |
| fSavedState = target->drawState(); |
| SkASSERT(fSavedState); |
| fSavedState->ref(); |
| if (kReset_ASRInit == init) { |
| // calls the default cons |
| fTempState.init(); |
| } else { |
| SkASSERT(kPreserve_ASRInit == init); |
| // calls the copy cons |
| fTempState.set(*fSavedState); |
| if (!fTempState.get()->setIdentityViewMatrix()) { |
| // let go of any resources held by the temp |
| fTempState.get()->reset(); |
| fDrawTarget = NULL; |
| fSavedState->unref(); |
| fSavedState = NULL; |
| return false; |
| } |
| } |
| target->setDrawState(fTempState.get()); |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry( |
| GrDrawTarget* target, |
| int vertexCount, |
| int indexCount) { |
| fTarget = NULL; |
| this->set(target, vertexCount, indexCount); |
| } |
| |
| GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry() { |
| fTarget = NULL; |
| } |
| |
| GrDrawTarget::AutoReleaseGeometry::~AutoReleaseGeometry() { |
| this->reset(); |
| } |
| |
| bool GrDrawTarget::AutoReleaseGeometry::set(GrDrawTarget* target, |
| int vertexCount, |
| int indexCount) { |
| this->reset(); |
| fTarget = target; |
| bool success = true; |
| if (NULL != fTarget) { |
| fTarget = target; |
| success = target->reserveVertexAndIndexSpace(vertexCount, |
| indexCount, |
| &fVertices, |
| &fIndices); |
| if (!success) { |
| fTarget = NULL; |
| this->reset(); |
| } |
| } |
| SkASSERT(success == (NULL != fTarget)); |
| return success; |
| } |
| |
| void GrDrawTarget::AutoReleaseGeometry::reset() { |
| if (NULL != fTarget) { |
| if (NULL != fVertices) { |
| fTarget->resetVertexSource(); |
| } |
| if (NULL != fIndices) { |
| fTarget->resetIndexSource(); |
| } |
| fTarget = NULL; |
| } |
| fVertices = NULL; |
| fIndices = NULL; |
| } |
| |
| GrDrawTarget::AutoClipRestore::AutoClipRestore(GrDrawTarget* target, const SkIRect& newClip) { |
| fTarget = target; |
| fClip = fTarget->getClip(); |
| fStack.init(); |
| fStack.get()->clipDevRect(newClip, SkRegion::kReplace_Op); |
| fReplacementClip.fClipStack = fStack.get(); |
| target->setClip(&fReplacementClip); |
| } |
| |
| namespace { |
| // returns true if the read/written rect intersects the src/dst and false if not. |
| bool clip_srcrect_and_dstpoint(const GrSurface* dst, |
| const GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint, |
| SkIRect* clippedSrcRect, |
| SkIPoint* clippedDstPoint) { |
| *clippedSrcRect = srcRect; |
| *clippedDstPoint = dstPoint; |
| |
| // clip the left edge to src and dst bounds, adjusting dstPoint if necessary |
| if (clippedSrcRect->fLeft < 0) { |
| clippedDstPoint->fX -= clippedSrcRect->fLeft; |
| clippedSrcRect->fLeft = 0; |
| } |
| if (clippedDstPoint->fX < 0) { |
| clippedSrcRect->fLeft -= clippedDstPoint->fX; |
| clippedDstPoint->fX = 0; |
| } |
| |
| // clip the top edge to src and dst bounds, adjusting dstPoint if necessary |
| if (clippedSrcRect->fTop < 0) { |
| clippedDstPoint->fY -= clippedSrcRect->fTop; |
| clippedSrcRect->fTop = 0; |
| } |
| if (clippedDstPoint->fY < 0) { |
| clippedSrcRect->fTop -= clippedDstPoint->fY; |
| clippedDstPoint->fY = 0; |
| } |
| |
| // clip the right edge to the src and dst bounds. |
| if (clippedSrcRect->fRight > src->width()) { |
| clippedSrcRect->fRight = src->width(); |
| } |
| if (clippedDstPoint->fX + clippedSrcRect->width() > dst->width()) { |
| clippedSrcRect->fRight = clippedSrcRect->fLeft + dst->width() - clippedDstPoint->fX; |
| } |
| |
| // clip the bottom edge to the src and dst bounds. |
| if (clippedSrcRect->fBottom > src->height()) { |
| clippedSrcRect->fBottom = src->height(); |
| } |
| if (clippedDstPoint->fY + clippedSrcRect->height() > dst->height()) { |
| clippedSrcRect->fBottom = clippedSrcRect->fTop + dst->height() - clippedDstPoint->fY; |
| } |
| |
| // The above clipping steps may have inverted the rect if it didn't intersect either the src or |
| // dst bounds. |
| return !clippedSrcRect->isEmpty(); |
| } |
| } |
| |
| bool GrDrawTarget::copySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| SkASSERT(NULL != dst); |
| SkASSERT(NULL != src); |
| |
| SkIRect clippedSrcRect; |
| SkIPoint clippedDstPoint; |
| // If the rect is outside the src or dst then we've already succeeded. |
| if (!clip_srcrect_and_dstpoint(dst, |
| src, |
| srcRect, |
| dstPoint, |
| &clippedSrcRect, |
| &clippedDstPoint)) { |
| SkASSERT(this->canCopySurface(dst, src, srcRect, dstPoint)); |
| return true; |
| } |
| |
| bool result = this->onCopySurface(dst, src, clippedSrcRect, clippedDstPoint); |
| SkASSERT(result == this->canCopySurface(dst, src, clippedSrcRect, clippedDstPoint)); |
| return result; |
| } |
| |
| bool GrDrawTarget::canCopySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| SkASSERT(NULL != dst); |
| SkASSERT(NULL != src); |
| |
| SkIRect clippedSrcRect; |
| SkIPoint clippedDstPoint; |
| // If the rect is outside the src or dst then we're guaranteed success |
| if (!clip_srcrect_and_dstpoint(dst, |
| src, |
| srcRect, |
| dstPoint, |
| &clippedSrcRect, |
| &clippedDstPoint)) { |
| return true; |
| } |
| return this->onCanCopySurface(dst, src, clippedSrcRect, clippedDstPoint); |
| } |
| |
| bool GrDrawTarget::onCanCopySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| // Check that the read/write rects are contained within the src/dst bounds. |
| SkASSERT(!srcRect.isEmpty()); |
| SkASSERT(SkIRect::MakeWH(src->width(), src->height()).contains(srcRect)); |
| SkASSERT(dstPoint.fX >= 0 && dstPoint.fY >= 0); |
| SkASSERT(dstPoint.fX + srcRect.width() <= dst->width() && |
| dstPoint.fY + srcRect.height() <= dst->height()); |
| |
| return !dst->isSameAs(src) && NULL != dst->asRenderTarget() && NULL != src->asTexture(); |
| } |
| |
| bool GrDrawTarget::onCopySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| if (!GrDrawTarget::onCanCopySurface(dst, src, srcRect, dstPoint)) { |
| return false; |
| } |
| |
| GrRenderTarget* rt = dst->asRenderTarget(); |
| GrTexture* tex = src->asTexture(); |
| |
| GrDrawTarget::AutoStateRestore asr(this, kReset_ASRInit); |
| this->drawState()->setRenderTarget(rt); |
| SkMatrix matrix; |
| matrix.setTranslate(SkIntToScalar(srcRect.fLeft - dstPoint.fX), |
| SkIntToScalar(srcRect.fTop - dstPoint.fY)); |
| matrix.postIDiv(tex->width(), tex->height()); |
| this->drawState()->addColorTextureEffect(tex, matrix); |
| SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, |
| dstPoint.fY, |
| srcRect.width(), |
| srcRect.height()); |
| this->drawSimpleRect(dstRect); |
| return true; |
| } |
| |
| void GrDrawTarget::initCopySurfaceDstDesc(const GrSurface* src, GrTextureDesc* desc) { |
| // Make the dst of the copy be a render target because the default copySurface draws to the dst. |
| desc->fOrigin = kDefault_GrSurfaceOrigin; |
| desc->fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit; |
| desc->fConfig = src->config(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrDrawTargetCaps::reset() { |
| f8BitPaletteSupport = false; |
| fNPOTTextureTileSupport = false; |
| fTwoSidedStencilSupport = false; |
| fStencilWrapOpsSupport = false; |
| fHWAALineSupport = false; |
| fShaderDerivativeSupport = false; |
| fGeometryShaderSupport = false; |
| fDualSourceBlendingSupport = false; |
| fBufferLockSupport = false; |
| fPathRenderingSupport = false; |
| fDstReadInShaderSupport = false; |
| fReuseScratchTextures = true; |
| |
| fMaxRenderTargetSize = 0; |
| fMaxTextureSize = 0; |
| fMaxSampleCount = 0; |
| |
| memset(fConfigRenderSupport, 0, sizeof(fConfigRenderSupport)); |
| } |
| |
| GrDrawTargetCaps& GrDrawTargetCaps::operator=(const GrDrawTargetCaps& other) { |
| f8BitPaletteSupport = other.f8BitPaletteSupport; |
| fNPOTTextureTileSupport = other.fNPOTTextureTileSupport; |
| fTwoSidedStencilSupport = other.fTwoSidedStencilSupport; |
| fStencilWrapOpsSupport = other.fStencilWrapOpsSupport; |
| fHWAALineSupport = other.fHWAALineSupport; |
| fShaderDerivativeSupport = other.fShaderDerivativeSupport; |
| fGeometryShaderSupport = other.fGeometryShaderSupport; |
| fDualSourceBlendingSupport = other.fDualSourceBlendingSupport; |
| fBufferLockSupport = other.fBufferLockSupport; |
| fPathRenderingSupport = other.fPathRenderingSupport; |
| fDstReadInShaderSupport = other.fDstReadInShaderSupport; |
| fReuseScratchTextures = other.fReuseScratchTextures; |
| |
| fMaxRenderTargetSize = other.fMaxRenderTargetSize; |
| fMaxTextureSize = other.fMaxTextureSize; |
| fMaxSampleCount = other.fMaxSampleCount; |
| |
| memcpy(fConfigRenderSupport, other.fConfigRenderSupport, sizeof(fConfigRenderSupport)); |
| |
| return *this; |
| } |
| |
| SkString GrDrawTargetCaps::dump() const { |
| SkString r; |
| static const char* gNY[] = {"NO", "YES"}; |
| r.appendf("8 Bit Palette Support : %s\n", gNY[f8BitPaletteSupport]); |
| r.appendf("NPOT Texture Tile Support : %s\n", gNY[fNPOTTextureTileSupport]); |
| r.appendf("Two Sided Stencil Support : %s\n", gNY[fTwoSidedStencilSupport]); |
| r.appendf("Stencil Wrap Ops Support : %s\n", gNY[fStencilWrapOpsSupport]); |
| r.appendf("HW AA Lines Support : %s\n", gNY[fHWAALineSupport]); |
| r.appendf("Shader Derivative Support : %s\n", gNY[fShaderDerivativeSupport]); |
| r.appendf("Geometry Shader Support : %s\n", gNY[fGeometryShaderSupport]); |
| r.appendf("Dual Source Blending Support: %s\n", gNY[fDualSourceBlendingSupport]); |
| r.appendf("Buffer Lock Support : %s\n", gNY[fBufferLockSupport]); |
| r.appendf("Path Rendering Support : %s\n", gNY[fPathRenderingSupport]); |
| r.appendf("Dst Read In Shader Support : %s\n", gNY[fDstReadInShaderSupport]); |
| r.appendf("Reuse Scratch Textures : %s\n", gNY[fReuseScratchTextures]); |
| r.appendf("Max Texture Size : %d\n", fMaxTextureSize); |
| r.appendf("Max Render Target Size : %d\n", fMaxRenderTargetSize); |
| r.appendf("Max Sample Count : %d\n", fMaxSampleCount); |
| |
| static const char* kConfigNames[] = { |
| "Unknown", // kUnknown_GrPixelConfig |
| "Alpha8", // kAlpha_8_GrPixelConfig, |
| "Index8", // kIndex_8_GrPixelConfig, |
| "RGB565", // kRGB_565_GrPixelConfig, |
| "RGBA444", // kRGBA_4444_GrPixelConfig, |
| "RGBA8888", // kRGBA_8888_GrPixelConfig, |
| "BGRA8888", // kBGRA_8888_GrPixelConfig, |
| }; |
| GR_STATIC_ASSERT(0 == kUnknown_GrPixelConfig); |
| GR_STATIC_ASSERT(1 == kAlpha_8_GrPixelConfig); |
| GR_STATIC_ASSERT(2 == kIndex_8_GrPixelConfig); |
| GR_STATIC_ASSERT(3 == kRGB_565_GrPixelConfig); |
| GR_STATIC_ASSERT(4 == kRGBA_4444_GrPixelConfig); |
| GR_STATIC_ASSERT(5 == kRGBA_8888_GrPixelConfig); |
| GR_STATIC_ASSERT(6 == kBGRA_8888_GrPixelConfig); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kConfigNames) == kGrPixelConfigCnt); |
| |
| SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][0]); |
| SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][1]); |
| for (size_t i = 0; i < SK_ARRAY_COUNT(kConfigNames); ++i) { |
| if (i != kUnknown_GrPixelConfig) { |
| r.appendf("%s is renderable: %s, with MSAA: %s\n", |
| kConfigNames[i], |
| gNY[fConfigRenderSupport[i][0]], |
| gNY[fConfigRenderSupport[i][1]]); |
| } |
| } |
| return r; |
| } |
