| /* |
| Copyright 2011 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include "GrContext.h" |
| #include "GrGpu.h" |
| #include "GrTextureCache.h" |
| #include "GrTextStrike.h" |
| #include "GrMemory.h" |
| #include "GrClipIterator.h" |
| #include "GrIndexBuffer.h" |
| #include "GrInOrderDrawBuffer.h" |
| #include "GrBufferAllocPool.h" |
| #include "GrPathRenderer.h" |
| |
| // larger than this, and we don't AA. set to 0 for no AA |
| #ifndef GR_MAX_OFFSCREEN_AA_DIM |
| #define GR_MAX_OFFSCREEN_AA_DIM 0 |
| #endif |
| |
| #define DEFER_TEXT_RENDERING 1 |
| |
| #define BATCH_RECT_TO_RECT (1 && !GR_STATIC_RECT_VB) |
| |
| static const size_t MAX_TEXTURE_CACHE_COUNT = 128; |
| static const size_t MAX_TEXTURE_CACHE_BYTES = 8 * 1024 * 1024; |
| |
| static const size_t DRAW_BUFFER_VBPOOL_BUFFER_SIZE = 1 << 18; |
| static const int DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS = 4; |
| |
| // We are currently only batching Text and drawRectToRect, both |
| // of which use the quad index buffer. |
| static const size_t DRAW_BUFFER_IBPOOL_BUFFER_SIZE = 0; |
| static const int DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS = 0; |
| |
| GrContext* GrContext::Create(GrEngine engine, |
| GrPlatform3DContext context3D) { |
| GrContext* ctx = NULL; |
| GrGpu* fGpu = GrGpu::Create(engine, context3D); |
| if (NULL != fGpu) { |
| ctx = new GrContext(fGpu); |
| fGpu->unref(); |
| } |
| return ctx; |
| } |
| |
| GrContext* GrContext::CreateGLShaderContext() { |
| return GrContext::Create(kOpenGL_Shaders_GrEngine, 0); |
| } |
| |
| GrContext::~GrContext() { |
| this->flush(); |
| delete fTextureCache; |
| delete fFontCache; |
| delete fDrawBuffer; |
| delete fDrawBufferVBAllocPool; |
| delete fDrawBufferIBAllocPool; |
| GrSafeUnref(fCustomPathRenderer); |
| GrSafeUnref(fAAFillRectIndexBuffer); |
| GrSafeUnref(fAAStrokeRectIndexBuffer); |
| fGpu->unref(); |
| } |
| |
| void GrContext::contextLost() { |
| contextDestroyed(); |
| this->setupDrawBuffer(); |
| } |
| |
| void GrContext::contextDestroyed() { |
| // abandon first to so destructors |
| // don't try to free the resources in the API. |
| fGpu->abandonResources(); |
| |
| delete fDrawBuffer; |
| fDrawBuffer = NULL; |
| |
| delete fDrawBufferVBAllocPool; |
| fDrawBufferVBAllocPool = NULL; |
| |
| delete fDrawBufferIBAllocPool; |
| fDrawBufferIBAllocPool = NULL; |
| |
| GrSafeSetNull(fAAFillRectIndexBuffer); |
| GrSafeSetNull(fAAStrokeRectIndexBuffer); |
| |
| fTextureCache->removeAll(); |
| fFontCache->freeAll(); |
| fGpu->markContextDirty(); |
| } |
| |
| void GrContext::resetContext() { |
| fGpu->markContextDirty(); |
| } |
| |
| void GrContext::freeGpuResources() { |
| this->flush(); |
| fTextureCache->removeAll(); |
| fFontCache->freeAll(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| int GrContext::PaintStageVertexLayoutBits( |
| const GrPaint& paint, |
| const bool hasTexCoords[GrPaint::kTotalStages]) { |
| int stageMask = paint.getActiveStageMask(); |
| int layout = 0; |
| for (int i = 0; i < GrPaint::kTotalStages; ++i) { |
| if ((1 << i) & stageMask) { |
| if (NULL != hasTexCoords && hasTexCoords[i]) { |
| layout |= GrDrawTarget::StageTexCoordVertexLayoutBit(i, i); |
| } else { |
| layout |= GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(i); |
| } |
| } |
| } |
| return layout; |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| enum { |
| kNPOTBit = 0x1, |
| kFilterBit = 0x2, |
| kKeylessBit = 0x4, |
| }; |
| |
| bool GrContext::finalizeTextureKey(GrTextureKey* key, |
| const GrSamplerState& sampler, |
| bool keyless) const { |
| uint32_t bits = 0; |
| uint16_t width = key->width(); |
| uint16_t height = key->height(); |
| |
| if (!fGpu->npotTextureTileSupport()) { |
| bool isPow2 = GrIsPow2(width) && GrIsPow2(height); |
| |
| bool tiled = (sampler.getWrapX() != GrSamplerState::kClamp_WrapMode) || |
| (sampler.getWrapY() != GrSamplerState::kClamp_WrapMode); |
| |
| if (tiled && !isPow2) { |
| bits |= kNPOTBit; |
| if (GrSamplerState::kNearest_Filter != sampler.getFilter()) { |
| bits |= kFilterBit; |
| } |
| } |
| } |
| |
| if (keyless) { |
| bits |= kKeylessBit; |
| } |
| key->finalize(bits); |
| return 0 != bits; |
| } |
| |
| GrTextureEntry* GrContext::findAndLockTexture(GrTextureKey* key, |
| const GrSamplerState& sampler) { |
| finalizeTextureKey(key, sampler, false); |
| return fTextureCache->findAndLock(*key); |
| } |
| |
| static void stretchImage(void* dst, |
| int dstW, |
| int dstH, |
| void* src, |
| int srcW, |
| int srcH, |
| int bpp) { |
| GrFixed dx = (srcW << 16) / dstW; |
| GrFixed dy = (srcH << 16) / dstH; |
| |
| GrFixed y = dy >> 1; |
| |
| int dstXLimit = dstW*bpp; |
| for (int j = 0; j < dstH; ++j) { |
| GrFixed x = dx >> 1; |
| void* srcRow = (uint8_t*)src + (y>>16)*srcW*bpp; |
| void* dstRow = (uint8_t*)dst + j*dstW*bpp; |
| for (int i = 0; i < dstXLimit; i += bpp) { |
| memcpy((uint8_t*) dstRow + i, |
| (uint8_t*) srcRow + (x>>16)*bpp, |
| bpp); |
| x += dx; |
| } |
| y += dy; |
| } |
| } |
| |
| GrTextureEntry* GrContext::createAndLockTexture(GrTextureKey* key, |
| const GrSamplerState& sampler, |
| const GrTextureDesc& desc, |
| void* srcData, size_t rowBytes) { |
| GrAssert(key->width() == desc.fWidth); |
| GrAssert(key->height() == desc.fHeight); |
| |
| #if GR_DUMP_TEXTURE_UPLOAD |
| GrPrintf("GrContext::createAndLockTexture [%d %d]\n", desc.fWidth, desc.fHeight); |
| #endif |
| |
| GrTextureEntry* entry = NULL; |
| bool special = finalizeTextureKey(key, sampler, false); |
| if (special) { |
| GrTextureEntry* clampEntry; |
| GrTextureKey clampKey(*key); |
| clampEntry = findAndLockTexture(&clampKey, GrSamplerState::ClampNoFilter()); |
| |
| if (NULL == clampEntry) { |
| clampEntry = createAndLockTexture(&clampKey, |
| GrSamplerState::ClampNoFilter(), |
| desc, srcData, rowBytes); |
| GrAssert(NULL != clampEntry); |
| if (NULL == clampEntry) { |
| return NULL; |
| } |
| } |
| GrTextureDesc rtDesc = desc; |
| rtDesc.fFlags = rtDesc.fFlags | |
| kRenderTarget_GrTextureFlagBit | |
| kNoStencil_GrTextureFlagBit; |
| rtDesc.fWidth = GrNextPow2(GrMax<int>(desc.fWidth, |
| fGpu->minRenderTargetWidth())); |
| rtDesc.fHeight = GrNextPow2(GrMax<int>(desc.fHeight, |
| fGpu->minRenderTargetHeight())); |
| |
| GrTexture* texture = fGpu->createTexture(rtDesc, NULL, 0); |
| |
| if (NULL != texture) { |
| GrDrawTarget::AutoStateRestore asr(fGpu); |
| fGpu->setRenderTarget(texture->asRenderTarget()); |
| fGpu->setTexture(0, clampEntry->texture()); |
| fGpu->disableStencil(); |
| fGpu->setViewMatrix(GrMatrix::I()); |
| fGpu->setAlpha(0xff); |
| fGpu->setBlendFunc(kOne_BlendCoeff, kZero_BlendCoeff); |
| fGpu->disableState(GrDrawTarget::kDither_StateBit | |
| GrDrawTarget::kClip_StateBit | |
| GrDrawTarget::kAntialias_StateBit); |
| GrSamplerState::Filter filter; |
| // if filtering is not desired then we want to ensure all |
| // texels in the resampled image are copies of texels from |
| // the original. |
| if (GrSamplerState::kNearest_Filter == sampler.getFilter()) { |
| filter = GrSamplerState::kNearest_Filter; |
| } else { |
| filter = GrSamplerState::kBilinear_Filter; |
| } |
| GrSamplerState stretchSampler(GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kClamp_WrapMode, |
| filter); |
| fGpu->setSamplerState(0, stretchSampler); |
| |
| static const GrVertexLayout layout = |
| GrDrawTarget::StageTexCoordVertexLayoutBit(0,0); |
| GrDrawTarget::AutoReleaseGeometry arg(fGpu, layout, 4, 0); |
| |
| if (arg.succeeded()) { |
| GrPoint* verts = (GrPoint*) arg.vertices(); |
| verts[0].setIRectFan(0, 0, |
| texture->width(), |
| texture->height(), |
| 2*sizeof(GrPoint)); |
| verts[1].setIRectFan(0, 0, 1, 1, 2*sizeof(GrPoint)); |
| fGpu->drawNonIndexed(kTriangleFan_PrimitiveType, |
| 0, 4); |
| entry = fTextureCache->createAndLock(*key, texture); |
| } |
| texture->releaseRenderTarget(); |
| } else { |
| // TODO: Our CPU stretch doesn't filter. But we create separate |
| // stretched textures when the sampler state is either filtered or |
| // not. Either implement filtered stretch blit on CPU or just create |
| // one when FBO case fails. |
| |
| rtDesc.fFlags = kNone_GrTextureFlags; |
| // no longer need to clamp at min RT size. |
| rtDesc.fWidth = GrNextPow2(desc.fWidth); |
| rtDesc.fHeight = GrNextPow2(desc.fHeight); |
| int bpp = GrBytesPerPixel(desc.fFormat); |
| GrAutoSMalloc<128*128*4> stretchedPixels(bpp * |
| rtDesc.fWidth * |
| rtDesc.fHeight); |
| stretchImage(stretchedPixels.get(), rtDesc.fWidth, rtDesc.fHeight, |
| srcData, desc.fWidth, desc.fHeight, bpp); |
| |
| size_t stretchedRowBytes = rtDesc.fWidth * bpp; |
| |
| GrTexture* texture = fGpu->createTexture(rtDesc, |
| stretchedPixels.get(), |
| stretchedRowBytes); |
| GrAssert(NULL != texture); |
| entry = fTextureCache->createAndLock(*key, texture); |
| } |
| fTextureCache->unlock(clampEntry); |
| |
| } else { |
| GrTexture* texture = fGpu->createTexture(desc, srcData, rowBytes); |
| if (NULL != texture) { |
| entry = fTextureCache->createAndLock(*key, texture); |
| } else { |
| entry = NULL; |
| } |
| } |
| return entry; |
| } |
| |
| GrTextureEntry* GrContext::lockKeylessTexture(const GrTextureDesc& desc) { |
| uint32_t p0 = desc.fFormat; |
| uint32_t p1 = (desc.fAALevel << 16) | desc.fFlags; |
| GrTextureKey key(p0, p1, desc.fWidth, desc.fHeight); |
| this->finalizeTextureKey(&key, GrSamplerState::ClampNoFilter(), true); |
| |
| GrTextureEntry* entry = fTextureCache->findAndLock(key); |
| if (NULL == entry) { |
| GrTexture* texture = fGpu->createTexture(desc, NULL, 0); |
| if (NULL != texture) { |
| entry = fTextureCache->createAndLock(key, texture); |
| } |
| } |
| // If the caller gives us the same desc/sampler twice we don't want |
| // to return the same texture the second time (unless it was previously |
| // released). So we detach the entry from the cache and reattach at release. |
| if (NULL != entry) { |
| fTextureCache->detach(entry); |
| } |
| return entry; |
| } |
| |
| void GrContext::unlockTexture(GrTextureEntry* entry) { |
| if (kKeylessBit & entry->key().getPrivateBits()) { |
| fTextureCache->reattachAndUnlock(entry); |
| } else { |
| fTextureCache->unlock(entry); |
| } |
| } |
| |
| GrTexture* GrContext::createUncachedTexture(const GrTextureDesc& desc, |
| void* srcData, |
| size_t rowBytes) { |
| return fGpu->createTexture(desc, srcData, rowBytes); |
| } |
| |
| void GrContext::getTextureCacheLimits(int* maxTextures, |
| size_t* maxTextureBytes) const { |
| fTextureCache->getLimits(maxTextures, maxTextureBytes); |
| } |
| |
| void GrContext::setTextureCacheLimits(int maxTextures, size_t maxTextureBytes) { |
| fTextureCache->setLimits(maxTextures, maxTextureBytes); |
| } |
| |
| int GrContext::getMaxTextureDimension() { |
| return fGpu->maxTextureDimension(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrResource* GrContext::createPlatformSurface(const GrPlatformSurfaceDesc& desc) { |
| // validate flags here so that GrGpu subclasses don't have to check |
| if (kTexture_GrPlatformSurfaceType == desc.fSurfaceType && |
| 0 != desc.fRenderTargetFlags) { |
| return NULL; |
| } |
| if (!(kIsMultisampled_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags) && |
| (kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| if (kTextureRenderTarget_GrPlatformSurfaceType == desc.fSurfaceType && |
| (kIsMultisampled_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags) && |
| !(kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| return fGpu->createPlatformSurface(desc); |
| } |
| |
| GrRenderTarget* GrContext::createRenderTargetFrom3DApiState() { |
| return fGpu->createRenderTargetFrom3DApiState(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrContext::supportsIndex8PixelConfig(const GrSamplerState& sampler, |
| int width, int height) { |
| if (!fGpu->supports8BitPalette()) { |
| return false; |
| } |
| |
| |
| bool isPow2 = GrIsPow2(width) && GrIsPow2(height); |
| |
| if (!isPow2) { |
| if (!fGpu->npotTextureSupport()) { |
| return false; |
| } |
| |
| bool tiled = sampler.getWrapX() != GrSamplerState::kClamp_WrapMode || |
| sampler.getWrapY() != GrSamplerState::kClamp_WrapMode; |
| if (tiled && !fGpu->npotTextureTileSupport()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| const GrClip& GrContext::getClip() const { return fGpu->getClip(); } |
| |
| void GrContext::setClip(const GrClip& clip) { |
| fGpu->setClip(clip); |
| fGpu->enableState(GrDrawTarget::kClip_StateBit); |
| } |
| |
| void GrContext::setClip(const GrIRect& rect) { |
| GrClip clip; |
| clip.setFromIRect(rect); |
| fGpu->setClip(clip); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::clear(const GrIRect* rect, const GrColor color) { |
| this->flush(); |
| fGpu->clear(rect, color); |
| } |
| |
| void GrContext::drawPaint(const GrPaint& paint) { |
| // set rect to be big enough to fill the space, but not super-huge, so we |
| // don't overflow fixed-point implementations |
| GrRect r; |
| r.setLTRB(0, 0, |
| GrIntToScalar(getRenderTarget()->width()), |
| GrIntToScalar(getRenderTarget()->height())); |
| GrMatrix inverse; |
| if (fGpu->getViewInverse(&inverse)) { |
| inverse.mapRect(&r); |
| } else { |
| GrPrintf("---- fGpu->getViewInverse failed\n"); |
| } |
| this->drawRect(paint, r); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrContext::doOffscreenAA(GrDrawTarget* target, |
| const GrPaint& paint, |
| bool isLines) const { |
| #if GR_MAX_OFFSCREEN_AA_DIM==0 |
| return false; |
| #else |
| if (!paint.fAntiAlias) { |
| return false; |
| } |
| if (isLines && fGpu->supportsAALines()) { |
| return false; |
| } |
| if (target->getRenderTarget()->isMultisampled()) { |
| return false; |
| } |
| // we have to be sure that the blend equation is expressible |
| // as simple src / dst coeffecients when the source |
| // is already modulated by the coverage fraction. |
| // We could use dual-source blending to get the correct per-pixel |
| // dst coeffecient for the remaining cases. |
| if (kISC_BlendCoeff != paint.fDstBlendCoeff && |
| kOne_BlendCoeff != paint.fDstBlendCoeff && |
| kISA_BlendCoeff != paint.fDstBlendCoeff) { |
| return false; |
| } |
| return true; |
| #endif |
| } |
| |
| bool GrContext::setupOffscreenAAPass1(GrDrawTarget* target, |
| bool requireStencil, |
| const GrIRect& boundRect, |
| OffscreenRecord* record) { |
| GrAssert(GR_MAX_OFFSCREEN_AA_DIM > 0); |
| |
| GrAssert(NULL == record->fEntry0); |
| GrAssert(NULL == record->fEntry1); |
| |
| int boundW = boundRect.width(); |
| int boundH = boundRect.height(); |
| int size = GrMax(64, (int)GrNextPow2(GrMax(boundW, boundH))); |
| |
| GrTextureDesc desc; |
| if (requireStencil) { |
| desc.fFlags = kRenderTarget_GrTextureFlagBit; |
| } else { |
| desc.fFlags = kRenderTarget_GrTextureFlagBit | |
| kNoStencil_GrTextureFlagBit; |
| } |
| |
| desc.fFormat = kRGBA_8888_GrPixelConfig; |
| |
| int scale; |
| // Using MSAA seems to be slower for some yet unknown reason. |
| if (false && fGpu->supportsFullsceneAA()) { |
| record->fDownsample = OffscreenRecord::kFSAA_Downsample; |
| scale = GR_Scalar1; |
| desc.fAALevel = kMed_GrAALevel; |
| } else { |
| record->fDownsample = (fGpu->supports4x4DownsampleFilter()) ? |
| OffscreenRecord::k4x4SinglePass_Downsample : |
| OffscreenRecord::k4x4TwoPass_Downsample; |
| scale = 4; |
| desc.fAALevel = kNone_GrAALevel; |
| } |
| |
| desc.fWidth = scale * size; |
| desc.fHeight = scale * size; |
| |
| record->fEntry0 = this->lockKeylessTexture(desc); |
| |
| if (NULL == record->fEntry0) { |
| return false; |
| } |
| |
| if (OffscreenRecord::k4x4TwoPass_Downsample == record->fDownsample) { |
| desc.fWidth /= 2; |
| desc.fHeight /= 2; |
| record->fEntry1 = this->lockKeylessTexture(desc); |
| if (NULL == record->fEntry1) { |
| this->unlockTexture(record->fEntry0); |
| record->fEntry0 = NULL; |
| return false; |
| } |
| } |
| |
| GrRenderTarget* offRT0 = record->fEntry0->texture()->asRenderTarget(); |
| GrAssert(NULL != offRT0); |
| |
| target->saveCurrentDrawState(&record->fSavedState); |
| |
| GrPaint tempPaint; |
| tempPaint.reset(); |
| SetPaint(tempPaint, target); |
| target->setRenderTarget(offRT0); |
| |
| GrMatrix transM; |
| transM.setTranslate(-boundRect.fLeft, -boundRect.fTop); |
| target->postConcatViewMatrix(transM); |
| GrMatrix scaleM; |
| scaleM.setScale(scale * GR_Scalar1, scale * GR_Scalar1); |
| target->postConcatViewMatrix(scaleM); |
| |
| // clip gets applied in second pass |
| target->disableState(GrDrawTarget::kClip_StateBit); |
| |
| GrIRect clear = SkIRect::MakeWH(scale * boundW, scale * boundH); |
| target->clear(&clear, 0x0); |
| |
| return true; |
| } |
| |
| void GrContext::offscreenAAPass2(GrDrawTarget* target, |
| const GrPaint& paint, |
| const GrIRect& boundRect, |
| OffscreenRecord* record) { |
| |
| GrAssert(NULL != record->fEntry0); |
| |
| GrSamplerState::Filter filter; |
| if (OffscreenRecord::k4x4SinglePass_Downsample == record->fDownsample) { |
| filter = GrSamplerState::k4x4Downsample_Filter; |
| } else { |
| filter = GrSamplerState::kBilinear_Filter; |
| } |
| |
| GrMatrix sampleM; |
| GrSamplerState sampler(GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kClamp_WrapMode, filter); |
| |
| GrTexture* src = record->fEntry0->texture(); |
| int scale; |
| |
| enum { |
| kOffscreenStage = GrPaint::kTotalStages, |
| }; |
| |
| if (OffscreenRecord::k4x4TwoPass_Downsample == record->fDownsample) { |
| GrAssert(NULL != record->fEntry1); |
| scale = 2; |
| GrRenderTarget* dst = record->fEntry1->texture()->asRenderTarget(); |
| |
| // Do 2x2 downsample from first to second |
| target->setTexture(kOffscreenStage, src); |
| target->setRenderTarget(dst); |
| target->setViewMatrix(GrMatrix::I()); |
| sampleM.setScale(scale * GR_Scalar1 / src->width(), |
| scale * GR_Scalar1 / src->height()); |
| sampler.setMatrix(sampleM); |
| target->setSamplerState(kOffscreenStage, sampler); |
| GrRect rect = SkRect::MakeWH(scale * boundRect.width(), |
| scale * boundRect.height()); |
| target->drawSimpleRect(rect, NULL, 1 << kOffscreenStage); |
| |
| src = record->fEntry1->texture(); |
| } else if (OffscreenRecord::kFSAA_Downsample == record->fDownsample) { |
| scale = 1; |
| GrIRect rect = SkIRect::MakeWH(boundRect.width(), boundRect.height()); |
| src->asRenderTarget()->overrideResolveRect(rect); |
| } else { |
| GrAssert(OffscreenRecord::k4x4SinglePass_Downsample == |
| record->fDownsample); |
| scale = 4; |
| } |
| |
| // setup for draw back to main RT |
| int stageMask = paint.getActiveStageMask(); |
| |
| target->restoreDrawState(record->fSavedState); |
| |
| if (stageMask) { |
| GrMatrix invVM; |
| if (target->getViewInverse(&invVM)) { |
| target->preConcatSamplerMatrices(stageMask, invVM); |
| } |
| } |
| target->setViewMatrix(GrMatrix::I()); |
| |
| target->setTexture(kOffscreenStage, src); |
| sampleM.setScale(scale * GR_Scalar1 / src->width(), |
| scale * GR_Scalar1 / src->height()); |
| sampler.setMatrix(sampleM); |
| sampleM.setTranslate(-boundRect.fLeft, -boundRect.fTop); |
| sampler.preConcatMatrix(sampleM); |
| target->setSamplerState(kOffscreenStage, sampler); |
| |
| GrRect dstRect; |
| int stages = (1 << kOffscreenStage) | stageMask; |
| dstRect.set(boundRect); |
| target->drawSimpleRect(dstRect, NULL, stages); |
| |
| this->unlockTexture(record->fEntry0); |
| record->fEntry0 = NULL; |
| if (NULL != record->fEntry1) { |
| this->unlockTexture(record->fEntry1); |
| record->fEntry1 = NULL; |
| } |
| target->restoreDrawState(record->fSavedState); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /* create a triangle strip that strokes the specified triangle. There are 8 |
| unique vertices, but we repreat the last 2 to close up. Alternatively we |
| could use an indices array, and then only send 8 verts, but not sure that |
| would be faster. |
| */ |
| static void setStrokeRectStrip(GrPoint verts[10], GrRect rect, |
| GrScalar width) { |
| const GrScalar rad = GrScalarHalf(width); |
| rect.sort(); |
| |
| verts[0].set(rect.fLeft + rad, rect.fTop + rad); |
| verts[1].set(rect.fLeft - rad, rect.fTop - rad); |
| verts[2].set(rect.fRight - rad, rect.fTop + rad); |
| verts[3].set(rect.fRight + rad, rect.fTop - rad); |
| verts[4].set(rect.fRight - rad, rect.fBottom - rad); |
| verts[5].set(rect.fRight + rad, rect.fBottom + rad); |
| verts[6].set(rect.fLeft + rad, rect.fBottom - rad); |
| verts[7].set(rect.fLeft - rad, rect.fBottom + rad); |
| verts[8] = verts[0]; |
| verts[9] = verts[1]; |
| } |
| |
| static GrColor getColorForMesh(const GrPaint& paint) { |
| // FIXME: This was copied from SkGpuDevice, seems like |
| // we should have already smeared a in caller if that |
| // is what is desired. |
| if (paint.hasTexture()) { |
| unsigned a = GrColorUnpackA(paint.fColor); |
| return GrColorPackRGBA(a, a, a, a); |
| } else { |
| return paint.fColor; |
| } |
| } |
| |
| static void setInsetFan(GrPoint* pts, size_t stride, |
| const GrRect& r, GrScalar dx, GrScalar dy) { |
| pts->setRectFan(r.fLeft + dx, r.fTop + dy, r.fRight - dx, r.fBottom - dy, stride); |
| } |
| |
| static const uint16_t gFillAARectIdx[] = { |
| 0, 1, 5, 5, 4, 0, |
| 1, 2, 6, 6, 5, 1, |
| 2, 3, 7, 7, 6, 2, |
| 3, 0, 4, 4, 7, 3, |
| 4, 5, 6, 6, 7, 4, |
| }; |
| |
| int GrContext::aaFillRectIndexCount() const { |
| return GR_ARRAY_COUNT(gFillAARectIdx); |
| } |
| |
| GrIndexBuffer* GrContext::aaFillRectIndexBuffer() { |
| if (NULL == fAAFillRectIndexBuffer) { |
| fAAFillRectIndexBuffer = fGpu->createIndexBuffer(sizeof(gFillAARectIdx), |
| false); |
| GrAssert(NULL != fAAFillRectIndexBuffer); |
| #if GR_DEBUG |
| bool updated = |
| #endif |
| fAAFillRectIndexBuffer->updateData(gFillAARectIdx, |
| sizeof(gFillAARectIdx)); |
| GR_DEBUGASSERT(updated); |
| } |
| return fAAFillRectIndexBuffer; |
| } |
| |
| static const uint16_t gStrokeAARectIdx[] = { |
| 0 + 0, 1 + 0, 5 + 0, 5 + 0, 4 + 0, 0 + 0, |
| 1 + 0, 2 + 0, 6 + 0, 6 + 0, 5 + 0, 1 + 0, |
| 2 + 0, 3 + 0, 7 + 0, 7 + 0, 6 + 0, 2 + 0, |
| 3 + 0, 0 + 0, 4 + 0, 4 + 0, 7 + 0, 3 + 0, |
| |
| 0 + 4, 1 + 4, 5 + 4, 5 + 4, 4 + 4, 0 + 4, |
| 1 + 4, 2 + 4, 6 + 4, 6 + 4, 5 + 4, 1 + 4, |
| 2 + 4, 3 + 4, 7 + 4, 7 + 4, 6 + 4, 2 + 4, |
| 3 + 4, 0 + 4, 4 + 4, 4 + 4, 7 + 4, 3 + 4, |
| |
| 0 + 8, 1 + 8, 5 + 8, 5 + 8, 4 + 8, 0 + 8, |
| 1 + 8, 2 + 8, 6 + 8, 6 + 8, 5 + 8, 1 + 8, |
| 2 + 8, 3 + 8, 7 + 8, 7 + 8, 6 + 8, 2 + 8, |
| 3 + 8, 0 + 8, 4 + 8, 4 + 8, 7 + 8, 3 + 8, |
| }; |
| |
| int GrContext::aaStrokeRectIndexCount() const { |
| return GR_ARRAY_COUNT(gStrokeAARectIdx); |
| } |
| |
| GrIndexBuffer* GrContext::aaStrokeRectIndexBuffer() { |
| if (NULL == fAAStrokeRectIndexBuffer) { |
| fAAStrokeRectIndexBuffer = fGpu->createIndexBuffer(sizeof(gStrokeAARectIdx), |
| false); |
| GrAssert(NULL != fAAStrokeRectIndexBuffer); |
| #if GR_DEBUG |
| bool updated = |
| #endif |
| fAAStrokeRectIndexBuffer->updateData(gStrokeAARectIdx, |
| sizeof(gStrokeAARectIdx)); |
| GR_DEBUGASSERT(updated); |
| } |
| return fAAStrokeRectIndexBuffer; |
| } |
| |
| void GrContext::fillAARect(GrDrawTarget* target, |
| const GrPaint& paint, |
| const GrRect& devRect) { |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL) | |
| GrDrawTarget::kColor_VertexLayoutBit; |
| |
| size_t vsize = GrDrawTarget::VertexSize(layout); |
| |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, 8, 0); |
| |
| intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
| |
| GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| |
| setInsetFan(fan0Pos, vsize, devRect, -GR_ScalarHalf, -GR_ScalarHalf); |
| setInsetFan(fan1Pos, vsize, devRect, GR_ScalarHalf, GR_ScalarHalf); |
| |
| verts += sizeof(GrPoint); |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| GrColor innerColor = getColorForMesh(paint); |
| verts += 4 * vsize; |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| } |
| |
| target->setIndexSourceToBuffer(this->aaFillRectIndexBuffer()); |
| |
| target->drawIndexed(kTriangles_PrimitiveType, 0, |
| 0, 8, this->aaFillRectIndexCount()); |
| } |
| |
| void GrContext::strokeAARect(GrDrawTarget* target, const GrPaint& paint, |
| const GrRect& devRect, const GrVec& devStrokeSize) { |
| const GrScalar& dx = devStrokeSize.fX; |
| const GrScalar& dy = devStrokeSize.fY; |
| const GrScalar rx = GrMul(dx, GR_ScalarHalf); |
| const GrScalar ry = GrMul(dy, GR_ScalarHalf); |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL) | |
| GrDrawTarget::kColor_VertexLayoutBit; |
| |
| GrScalar spare; |
| { |
| GrScalar w = devRect.width() - dx; |
| GrScalar h = devRect.height() - dy; |
| spare = GrMin(w, h); |
| } |
| |
| if (spare <= 0) { |
| GrRect r(devRect); |
| r.inset(-rx, -ry); |
| fillAARect(target, paint, r); |
| return; |
| } |
| |
| size_t vsize = GrDrawTarget::VertexSize(layout); |
| |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, 16, 0); |
| |
| intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
| |
| GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| GrPoint* fan2Pos = reinterpret_cast<GrPoint*>(verts + 8 * vsize); |
| GrPoint* fan3Pos = reinterpret_cast<GrPoint*>(verts + 12 * vsize); |
| |
| setInsetFan(fan0Pos, vsize, devRect, -rx - GR_ScalarHalf, -ry - GR_ScalarHalf); |
| setInsetFan(fan1Pos, vsize, devRect, -rx + GR_ScalarHalf, -ry + GR_ScalarHalf); |
| setInsetFan(fan2Pos, vsize, devRect, rx - GR_ScalarHalf, ry - GR_ScalarHalf); |
| setInsetFan(fan3Pos, vsize, devRect, rx + GR_ScalarHalf, ry + GR_ScalarHalf); |
| |
| verts += sizeof(GrPoint); |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| GrColor innerColor = getColorForMesh(paint); |
| verts += 4 * vsize; |
| for (int i = 0; i < 8; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| } |
| |
| verts += 8 * vsize; |
| for (int i = 0; i < 8; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| target->setIndexSourceToBuffer(aaStrokeRectIndexBuffer()); |
| target->drawIndexed(kTriangles_PrimitiveType, |
| 0, 0, 16, aaStrokeRectIndexCount()); |
| } |
| |
| /** |
| * Returns true if the rects edges are integer-aligned. |
| */ |
| static bool isIRect(const GrRect& r) { |
| return GrScalarIsInt(r.fLeft) && GrScalarIsInt(r.fTop) && |
| GrScalarIsInt(r.fRight) && GrScalarIsInt(r.fBottom); |
| } |
| |
| static bool apply_aa_to_rect(GrDrawTarget* target, |
| GrGpu* gpu, |
| const GrPaint& paint, |
| const GrRect& rect, |
| GrScalar width, |
| const GrMatrix* matrix, |
| GrMatrix* combinedMatrix, |
| GrRect* devRect) { |
| // we use a simple alpha ramp to do aa on axis-aligned rects |
| // do AA with alpha ramp if the caller requested AA, the rect |
| // will be axis-aligned,the render target is not |
| // multisampled, and the rect won't land on integer coords. |
| |
| if (!paint.fAntiAlias) { |
| return false; |
| } |
| |
| if (target->getRenderTarget()->isMultisampled()) { |
| return false; |
| } |
| |
| if (0 == width && gpu->supportsAALines()) { |
| return false; |
| } |
| |
| if (!target->getViewMatrix().preservesAxisAlignment()) { |
| return false; |
| } |
| |
| if (NULL != matrix && |
| !matrix->preservesAxisAlignment()) { |
| return false; |
| } |
| |
| *combinedMatrix = target->getViewMatrix(); |
| if (NULL != matrix) { |
| combinedMatrix->preConcat(*matrix); |
| GrAssert(combinedMatrix->preservesAxisAlignment()); |
| } |
| |
| combinedMatrix->mapRect(devRect, rect); |
| devRect->sort(); |
| |
| if (width < 0) { |
| return !isIRect(*devRect); |
| } else { |
| return true; |
| } |
| } |
| |
| void GrContext::drawRect(const GrPaint& paint, |
| const GrRect& rect, |
| GrScalar width, |
| const GrMatrix* matrix) { |
| |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| int stageMask = paint.getActiveStageMask(); |
| |
| GrRect devRect = rect; |
| GrMatrix combinedMatrix; |
| bool doAA = apply_aa_to_rect(target, fGpu, paint, rect, width, matrix, |
| &combinedMatrix, &devRect); |
| |
| if (doAA) { |
| GrDrawTarget::AutoViewMatrixRestore avm(target); |
| if (stageMask) { |
| GrMatrix inv; |
| if (combinedMatrix.invert(&inv)) { |
| target->preConcatSamplerMatrices(stageMask, inv); |
| } |
| } |
| target->setViewMatrix(GrMatrix::I()); |
| if (width >= 0) { |
| GrVec strokeSize;; |
| if (width > 0) { |
| strokeSize.set(width, width); |
| combinedMatrix.mapVectors(&strokeSize, 1); |
| strokeSize.setAbs(strokeSize); |
| } else { |
| strokeSize.set(GR_Scalar1, GR_Scalar1); |
| } |
| strokeAARect(target, paint, devRect, strokeSize); |
| } else { |
| fillAARect(target, paint, devRect); |
| } |
| return; |
| } |
| |
| if (width >= 0) { |
| // TODO: consider making static vertex buffers for these cases. |
| // Hairline could be done by just adding closing vertex to |
| // unitSquareVertexBuffer() |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| |
| static const int worstCaseVertCount = 10; |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, worstCaseVertCount, 0); |
| |
| if (!geo.succeeded()) { |
| return; |
| } |
| |
| GrPrimitiveType primType; |
| int vertCount; |
| GrPoint* vertex = geo.positions(); |
| |
| if (width > 0) { |
| vertCount = 10; |
| primType = kTriangleStrip_PrimitiveType; |
| setStrokeRectStrip(vertex, rect, width); |
| } else { |
| // hairline |
| vertCount = 5; |
| primType = kLineStrip_PrimitiveType; |
| vertex[0].set(rect.fLeft, rect.fTop); |
| vertex[1].set(rect.fRight, rect.fTop); |
| vertex[2].set(rect.fRight, rect.fBottom); |
| vertex[3].set(rect.fLeft, rect.fBottom); |
| vertex[4].set(rect.fLeft, rect.fTop); |
| } |
| |
| GrDrawTarget::AutoViewMatrixRestore avmr; |
| if (NULL != matrix) { |
| avmr.set(target); |
| target->preConcatViewMatrix(*matrix); |
| target->preConcatSamplerMatrices(stageMask, *matrix); |
| } |
| |
| target->drawNonIndexed(primType, 0, vertCount); |
| } else { |
| #if GR_STATIC_RECT_VB |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| |
| target->setVertexSourceToBuffer(layout, |
| fGpu->getUnitSquareVertexBuffer()); |
| GrDrawTarget::AutoViewMatrixRestore avmr(target); |
| GrMatrix m; |
| m.setAll(rect.width(), 0, rect.fLeft, |
| 0, rect.height(), rect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| |
| if (NULL != matrix) { |
| m.postConcat(*matrix); |
| } |
| |
| target->preConcatViewMatrix(m); |
| target->preConcatSamplerMatrices(stageMask, m); |
| |
| target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, 4); |
| #else |
| target->drawSimpleRect(rect, matrix, stageMask); |
| #endif |
| } |
| } |
| |
| void GrContext::drawRectToRect(const GrPaint& paint, |
| const GrRect& dstRect, |
| const GrRect& srcRect, |
| const GrMatrix* dstMatrix, |
| const GrMatrix* srcMatrix) { |
| |
| // srcRect refers to paint's first texture |
| if (NULL == paint.getTexture(0)) { |
| drawRect(paint, dstRect, -1, dstMatrix); |
| return; |
| } |
| |
| GR_STATIC_ASSERT(!BATCH_RECT_TO_RECT || !GR_STATIC_RECT_VB); |
| |
| #if GR_STATIC_RECT_VB |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| GrDrawTarget::AutoViewMatrixRestore avmr(target); |
| |
| GrMatrix m; |
| |
| m.setAll(dstRect.width(), 0, dstRect.fLeft, |
| 0, dstRect.height(), dstRect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| if (NULL != dstMatrix) { |
| m.postConcat(*dstMatrix); |
| } |
| target->preConcatViewMatrix(m); |
| |
| // srcRect refers to first stage |
| int otherStageMask = paint.getActiveStageMask() & |
| (~(1 << GrPaint::kFirstTextureStage)); |
| if (otherStageMask) { |
| target->preConcatSamplerMatrices(otherStageMask, m); |
| } |
| |
| m.setAll(srcRect.width(), 0, srcRect.fLeft, |
| 0, srcRect.height(), srcRect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| if (NULL != srcMatrix) { |
| m.postConcat(*srcMatrix); |
| } |
| target->preConcatSamplerMatrix(GrPaint::kFirstTextureStage, m); |
| |
| target->setVertexSourceToBuffer(layout, fGpu->getUnitSquareVertexBuffer()); |
| target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, 4); |
| #else |
| |
| GrDrawTarget* target; |
| #if BATCH_RECT_TO_RECT |
| target = this->prepareToDraw(paint, kBuffered_DrawCategory); |
| #else |
| target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| #endif |
| |
| const GrRect* srcRects[GrDrawTarget::kNumStages] = {NULL}; |
| const GrMatrix* srcMatrices[GrDrawTarget::kNumStages] = {NULL}; |
| srcRects[0] = &srcRect; |
| srcMatrices[0] = srcMatrix; |
| |
| target->drawRect(dstRect, dstMatrix, 1, srcRects, srcMatrices); |
| #endif |
| } |
| |
| void GrContext::drawVertices(const GrPaint& paint, |
| GrPrimitiveType primitiveType, |
| int vertexCount, |
| const GrPoint positions[], |
| const GrPoint texCoords[], |
| const GrColor colors[], |
| const uint16_t indices[], |
| int indexCount) { |
| |
| GrDrawTarget::AutoReleaseGeometry geo; |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| |
| bool hasTexCoords[GrPaint::kTotalStages] = { |
| NULL != texCoords, // texCoordSrc provides explicit stage 0 coords |
| 0 // remaining stages use positions |
| }; |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, hasTexCoords); |
| |
| if (NULL != colors) { |
| layout |= GrDrawTarget::kColor_VertexLayoutBit; |
| } |
| int vertexSize = GrDrawTarget::VertexSize(layout); |
| |
| bool doAA = false; |
| OffscreenRecord record; |
| GrIRect bounds; |
| |
| if (sizeof(GrPoint) != vertexSize) { |
| if (!geo.set(target, layout, vertexCount, 0)) { |
| GrPrintf("Failed to get space for vertices!"); |
| return; |
| } |
| int texOffsets[GrDrawTarget::kMaxTexCoords]; |
| int colorOffset; |
| GrDrawTarget::VertexSizeAndOffsetsByIdx(layout, |
| texOffsets, |
| &colorOffset); |
| void* curVertex = geo.vertices(); |
| |
| for (int i = 0; i < vertexCount; ++i) { |
| *((GrPoint*)curVertex) = positions[i]; |
| |
| if (texOffsets[0] > 0) { |
| *(GrPoint*)((intptr_t)curVertex + texOffsets[0]) = texCoords[i]; |
| } |
| if (colorOffset > 0) { |
| *(GrColor*)((intptr_t)curVertex + colorOffset) = colors[i]; |
| } |
| curVertex = (void*)((intptr_t)curVertex + vertexSize); |
| } |
| } else { |
| // we don't do offscreen AA when we have per-vertex tex coords or colors |
| if (this->doOffscreenAA(target, paint, GrIsPrimTypeLines(primitiveType))) { |
| GrRect b; |
| b.setBounds(positions, vertexCount); |
| target->getViewMatrix().mapRect(&b); |
| b.roundOut(&bounds); |
| |
| if (this->setupOffscreenAAPass1(target, false, bounds, &record)) { |
| doAA = true; |
| } |
| } |
| target->setVertexSourceToArray(layout, positions, vertexCount); |
| } |
| |
| if (NULL != indices) { |
| target->setIndexSourceToArray(indices, indexCount); |
| } |
| |
| if (NULL != indices) { |
| target->drawIndexed(primitiveType, 0, 0, vertexCount, indexCount); |
| } else { |
| target->drawNonIndexed(primitiveType, 0, vertexCount); |
| } |
| |
| if (doAA) { |
| this->offscreenAAPass2(target, paint, bounds, &record); |
| } |
| } |
| |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::drawPath(const GrPaint& paint, const GrPath& path, |
| GrPathFill fill, const GrPoint* translate) { |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| GrPathRenderer* pr = this->getPathRenderer(target, path, fill); |
| |
| if (!IsFillInverted(fill) && // will be relaxed soon |
| !pr->supportsAA(target, path, fill) && |
| this->doOffscreenAA(target, paint, kHairLine_PathFill == fill)) { |
| |
| OffscreenRecord record; |
| bool needsStencil = pr->requiresStencilPass(target, path, fill); |
| |
| // compute bounds as intersection of rt size, clip, and path |
| GrIRect bound = SkIRect::MakeWH(target->getRenderTarget()->width(), |
| target->getRenderTarget()->height()); |
| if (target->getClip().hasConservativeBounds()) { |
| GrIRect clipIBounds; |
| target->getClip().getConservativeBounds().roundOut(&clipIBounds); |
| if (!bound.intersect(clipIBounds)) { |
| return; |
| } |
| } |
| |
| GrRect pathBounds = path.getBounds(); |
| GrIRect pathIBounds; |
| if (!pathBounds.isEmpty()) { |
| if (NULL != translate) { |
| pathBounds.offset(*translate); |
| } |
| target->getViewMatrix().mapRect(&pathBounds, pathBounds); |
| pathBounds.roundOut(&pathIBounds); |
| if (!bound.intersect(pathIBounds)) { |
| return; |
| } |
| } |
| |
| // for now, abort antialiasing if our bounds are too big, so we don't |
| // hit the FBO size limit |
| if (pathIBounds.width() > GR_MAX_OFFSCREEN_AA_DIM || |
| pathIBounds.height() > GR_MAX_OFFSCREEN_AA_DIM) { |
| goto NO_AA; |
| } |
| |
| if (this->setupOffscreenAAPass1(target, needsStencil, bound, &record)) { |
| pr->drawPath(target, 0, path, fill, translate); |
| this->offscreenAAPass2(target, paint, bound, &record); |
| return; |
| } |
| } |
| |
| // we can fall out of the AA section for some reasons, and land here |
| NO_AA: |
| GrDrawTarget::StageBitfield enabledStages = paint.getActiveStageMask(); |
| |
| pr->drawPath(target, enabledStages, path, fill, translate); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::flush(int flagsBitfield) { |
| if (kDiscard_FlushBit & flagsBitfield) { |
| fDrawBuffer->reset(); |
| } else { |
| flushDrawBuffer(); |
| } |
| |
| if (kForceCurrentRenderTarget_FlushBit & flagsBitfield) { |
| fGpu->forceRenderTargetFlush(); |
| } |
| } |
| |
| void GrContext::flushText() { |
| if (kText_DrawCategory == fLastDrawCategory) { |
| flushDrawBuffer(); |
| } |
| } |
| |
| void GrContext::flushDrawBuffer() { |
| #if BATCH_RECT_TO_RECT || DEFER_TEXT_RENDERING |
| if (fDrawBuffer) { |
| fDrawBuffer->playback(fGpu); |
| fDrawBuffer->reset(); |
| } |
| #endif |
| } |
| |
| bool GrContext::readTexturePixels(GrTexture* texture, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer) { |
| |
| // TODO: code read pixels for textures that aren't rendertargets |
| |
| this->flush(); |
| GrRenderTarget* target = texture->asRenderTarget(); |
| if (NULL != target) { |
| return fGpu->readPixels(target, |
| left, top, width, height, |
| config, buffer); |
| } else { |
| return false; |
| } |
| } |
| |
| bool GrContext::readRenderTargetPixels(GrRenderTarget* target, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer) { |
| uint32_t flushFlags = 0; |
| if (NULL == target) { |
| flushFlags |= GrContext::kForceCurrentRenderTarget_FlushBit; |
| } |
| |
| this->flush(flushFlags); |
| return fGpu->readPixels(target, |
| left, top, width, height, |
| config, buffer); |
| } |
| |
| void GrContext::writePixels(int left, int top, int width, int height, |
| GrPixelConfig config, const void* buffer, |
| size_t stride) { |
| |
| // TODO: when underlying api has a direct way to do this we should use it |
| // (e.g. glDrawPixels on desktop GL). |
| |
| const GrTextureDesc desc = { |
| kNone_GrTextureFlags, kNone_GrAALevel, width, height, config |
| }; |
| GrTexture* texture = fGpu->createTexture(desc, buffer, stride); |
| if (NULL == texture) { |
| return; |
| } |
| |
| this->flush(true); |
| |
| GrAutoUnref aur(texture); |
| GrDrawTarget::AutoStateRestore asr(fGpu); |
| |
| GrMatrix matrix; |
| matrix.setTranslate(GrIntToScalar(left), GrIntToScalar(top)); |
| fGpu->setViewMatrix(matrix); |
| |
| fGpu->setColorFilter(0, SkXfermode::kDst_Mode); |
| fGpu->disableState(GrDrawTarget::kClip_StateBit); |
| fGpu->setAlpha(0xFF); |
| fGpu->setBlendFunc(kOne_BlendCoeff, |
| kZero_BlendCoeff); |
| fGpu->setTexture(0, texture); |
| |
| GrSamplerState sampler; |
| sampler.setClampNoFilter(); |
| matrix.setScale(GR_Scalar1 / width, GR_Scalar1 / height); |
| sampler.setMatrix(matrix); |
| fGpu->setSamplerState(0, sampler); |
| |
| GrVertexLayout layout = GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(0); |
| static const int VCOUNT = 4; |
| |
| GrDrawTarget::AutoReleaseGeometry geo(fGpu, layout, VCOUNT, 0); |
| if (!geo.succeeded()) { |
| return; |
| } |
| ((GrPoint*)geo.vertices())->setIRectFan(0, 0, width, height); |
| fGpu->drawNonIndexed(kTriangleFan_PrimitiveType, 0, VCOUNT); |
| } |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::SetPaint(const GrPaint& paint, GrDrawTarget* target) { |
| |
| for (int i = 0; i < GrPaint::kMaxTextures; ++i) { |
| int s = i + GrPaint::kFirstTextureStage; |
| target->setTexture(s, paint.getTexture(i)); |
| target->setSamplerState(s, *paint.getTextureSampler(i)); |
| } |
| |
| target->setFirstCoverageStage(GrPaint::kFirstMaskStage); |
| |
| for (int i = 0; i < GrPaint::kMaxMasks; ++i) { |
| int s = i + GrPaint::kFirstMaskStage; |
| target->setTexture(s, paint.getMask(i)); |
| target->setSamplerState(s, *paint.getMaskSampler(i)); |
| } |
| |
| target->setColor(paint.fColor); |
| |
| if (paint.fDither) { |
| target->enableState(GrDrawTarget::kDither_StateBit); |
| } else { |
| target->disableState(GrDrawTarget::kDither_StateBit); |
| } |
| if (paint.fAntiAlias) { |
| target->enableState(GrDrawTarget::kAntialias_StateBit); |
| } else { |
| target->disableState(GrDrawTarget::kAntialias_StateBit); |
| } |
| target->setBlendFunc(paint.fSrcBlendCoeff, paint.fDstBlendCoeff); |
| target->setColorFilter(paint.fColorFilterColor, paint.fColorFilterXfermode); |
| } |
| |
| GrDrawTarget* GrContext::prepareToDraw(const GrPaint& paint, |
| DrawCategory category) { |
| if (category != fLastDrawCategory) { |
| flushDrawBuffer(); |
| fLastDrawCategory = category; |
| } |
| SetPaint(paint, fGpu); |
| GrDrawTarget* target = fGpu; |
| switch (category) { |
| case kText_DrawCategory: |
| #if DEFER_TEXT_RENDERING |
| target = fDrawBuffer; |
| fDrawBuffer->initializeDrawStateAndClip(*fGpu); |
| #else |
| target = fGpu; |
| #endif |
| break; |
| case kUnbuffered_DrawCategory: |
| target = fGpu; |
| break; |
| case kBuffered_DrawCategory: |
| target = fDrawBuffer; |
| fDrawBuffer->initializeDrawStateAndClip(*fGpu); |
| break; |
| } |
| return target; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::setRenderTarget(GrRenderTarget* target) { |
| this->flush(false); |
| fGpu->setRenderTarget(target); |
| } |
| |
| GrRenderTarget* GrContext::getRenderTarget() { |
| return fGpu->getRenderTarget(); |
| } |
| |
| const GrRenderTarget* GrContext::getRenderTarget() const { |
| return fGpu->getRenderTarget(); |
| } |
| |
| const GrMatrix& GrContext::getMatrix() const { |
| return fGpu->getViewMatrix(); |
| } |
| |
| void GrContext::setMatrix(const GrMatrix& m) { |
| fGpu->setViewMatrix(m); |
| } |
| |
| void GrContext::concatMatrix(const GrMatrix& m) const { |
| fGpu->preConcatViewMatrix(m); |
| } |
| |
| static inline intptr_t setOrClear(intptr_t bits, int shift, intptr_t pred) { |
| intptr_t mask = 1 << shift; |
| if (pred) { |
| bits |= mask; |
| } else { |
| bits &= ~mask; |
| } |
| return bits; |
| } |
| |
| void GrContext::resetStats() { |
| fGpu->resetStats(); |
| } |
| |
| const GrGpuStats& GrContext::getStats() const { |
| return fGpu->getStats(); |
| } |
| |
| void GrContext::printStats() const { |
| fGpu->printStats(); |
| } |
| |
| GrContext::GrContext(GrGpu* gpu) : |
| fDefaultPathRenderer(gpu->supportsTwoSidedStencil(), |
| gpu->supportsStencilWrapOps()) { |
| |
| fGpu = gpu; |
| fGpu->ref(); |
| fGpu->setContext(this); |
| |
| fCustomPathRenderer = GrPathRenderer::CreatePathRenderer(); |
| fGpu->setClipPathRenderer(fCustomPathRenderer); |
| |
| fTextureCache = new GrTextureCache(MAX_TEXTURE_CACHE_COUNT, |
| MAX_TEXTURE_CACHE_BYTES); |
| fFontCache = new GrFontCache(fGpu); |
| |
| fLastDrawCategory = kUnbuffered_DrawCategory; |
| |
| fDrawBuffer = NULL; |
| fDrawBufferVBAllocPool = NULL; |
| fDrawBufferIBAllocPool = NULL; |
| |
| fAAFillRectIndexBuffer = NULL; |
| fAAStrokeRectIndexBuffer = NULL; |
| |
| this->setupDrawBuffer(); |
| } |
| |
| void GrContext::setupDrawBuffer() { |
| |
| GrAssert(NULL == fDrawBuffer); |
| GrAssert(NULL == fDrawBufferVBAllocPool); |
| GrAssert(NULL == fDrawBufferIBAllocPool); |
| |
| #if DEFER_TEXT_RENDERING || BATCH_RECT_TO_RECT |
| fDrawBufferVBAllocPool = |
| new GrVertexBufferAllocPool(fGpu, false, |
| DRAW_BUFFER_VBPOOL_BUFFER_SIZE, |
| DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS); |
| fDrawBufferIBAllocPool = |
| new GrIndexBufferAllocPool(fGpu, false, |
| DRAW_BUFFER_IBPOOL_BUFFER_SIZE, |
| DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS); |
| |
| fDrawBuffer = new GrInOrderDrawBuffer(fDrawBufferVBAllocPool, |
| fDrawBufferIBAllocPool); |
| #endif |
| |
| #if BATCH_RECT_TO_RECT |
| fDrawBuffer->setQuadIndexBuffer(this->getQuadIndexBuffer()); |
| #endif |
| } |
| |
| GrDrawTarget* GrContext::getTextTarget(const GrPaint& paint) { |
| GrDrawTarget* target; |
| #if DEFER_TEXT_RENDERING |
| target = prepareToDraw(paint, kText_DrawCategory); |
| #else |
| target = prepareToDraw(paint, kUnbuffered_DrawCategory); |
| #endif |
| SetPaint(paint, target); |
| return target; |
| } |
| |
| const GrIndexBuffer* GrContext::getQuadIndexBuffer() const { |
| return fGpu->getQuadIndexBuffer(); |
| } |
| |
| GrPathRenderer* GrContext::getPathRenderer(const GrDrawTarget* target, |
| const GrPath& path, |
| GrPathFill fill) { |
| if (NULL != fCustomPathRenderer && |
| fCustomPathRenderer->canDrawPath(target, path, fill)) { |
| return fCustomPathRenderer; |
| } else { |
| GrAssert(fDefaultPathRenderer.canDrawPath(target, path, fill)); |
| return &fDefaultPathRenderer; |
| } |
| } |
| |
