| |
| /* |
| * 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 "GrGpu.h" |
| |
| #include "GrBufferAllocPool.h" |
| #include "GrContext.h" |
| #include "GrDrawTargetCaps.h" |
| #include "GrGpuResourcePriv.h" |
| #include "GrIndexBuffer.h" |
| #include "GrResourceCache.h" |
| #include "GrRenderTargetPriv.h" |
| #include "GrStencilAttachment.h" |
| #include "GrVertexBuffer.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrGpu::GrGpu(GrContext* context) |
| : fResetTimestamp(kExpiredTimestamp+1) |
| , fResetBits(kAll_GrBackendState) |
| , fGpuTraceMarkerCount(0) |
| , fContext(context) { |
| } |
| |
| GrGpu::~GrGpu() {} |
| |
| void GrGpu::contextAbandoned() {} |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin, bool renderTarget) { |
| // By default, GrRenderTargets are GL's normal orientation so that they |
| // can be drawn to by the outside world without the client having |
| // to render upside down. |
| if (kDefault_GrSurfaceOrigin == origin) { |
| return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; |
| } else { |
| return origin; |
| } |
| } |
| |
| GrTexture* GrGpu::createTexture(const GrSurfaceDesc& origDesc, bool budgeted, |
| const void* srcData, size_t rowBytes) { |
| GrSurfaceDesc desc = origDesc; |
| |
| if (!this->caps()->isConfigTexturable(desc.fConfig)) { |
| return NULL; |
| } |
| |
| bool isRT = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag); |
| if (isRT && !this->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) { |
| return NULL; |
| } |
| |
| GrTexture *tex = NULL; |
| |
| if (isRT) { |
| int maxRTSize = this->caps()->maxRenderTargetSize(); |
| if (desc.fWidth > maxRTSize || desc.fHeight > maxRTSize) { |
| return NULL; |
| } |
| } else { |
| int maxSize = this->caps()->maxTextureSize(); |
| if (desc.fWidth > maxSize || desc.fHeight > maxSize) { |
| return NULL; |
| } |
| } |
| |
| GrGpuResource::LifeCycle lifeCycle = budgeted ? GrGpuResource::kCached_LifeCycle : |
| GrGpuResource::kUncached_LifeCycle; |
| |
| desc.fSampleCnt = SkTMin(desc.fSampleCnt, this->caps()->maxSampleCount()); |
| // Attempt to catch un- or wrongly initialized sample counts; |
| SkASSERT(desc.fSampleCnt >= 0 && desc.fSampleCnt <= 64); |
| |
| desc.fOrigin = resolve_origin(desc.fOrigin, isRT); |
| |
| if (GrPixelConfigIsCompressed(desc.fConfig)) { |
| // We shouldn't be rendering into this |
| SkASSERT(!isRT); |
| SkASSERT(0 == desc.fSampleCnt); |
| |
| if (!this->caps()->npotTextureTileSupport() && |
| (!SkIsPow2(desc.fWidth) || !SkIsPow2(desc.fHeight))) { |
| return NULL; |
| } |
| |
| this->handleDirtyContext(); |
| tex = this->onCreateCompressedTexture(desc, lifeCycle, srcData); |
| } else { |
| this->handleDirtyContext(); |
| tex = this->onCreateTexture(desc, lifeCycle, srcData, rowBytes); |
| } |
| if (!this->caps()->reuseScratchTextures() && !isRT) { |
| tex->resourcePriv().removeScratchKey(); |
| } |
| if (tex) { |
| fStats.incTextureCreates(); |
| if (srcData) { |
| fStats.incTextureUploads(); |
| } |
| } |
| return tex; |
| } |
| |
| bool GrGpu::attachStencilAttachmentToRenderTarget(GrRenderTarget* rt) { |
| SkASSERT(NULL == rt->renderTargetPriv().getStencilAttachment()); |
| GrUniqueKey sbKey; |
| |
| int width = rt->width(); |
| int height = rt->height(); |
| #if 0 |
| if (this->caps()->oversizedStencilSupport()) { |
| width = SkNextPow2(width); |
| height = SkNextPow2(height); |
| } |
| #endif |
| |
| GrStencilAttachment::ComputeSharedStencilAttachmentKey(width, height, rt->numSamples(), &sbKey); |
| SkAutoTUnref<GrStencilAttachment> sb(static_cast<GrStencilAttachment*>( |
| this->getContext()->getResourceCache()->findAndRefUniqueResource(sbKey))); |
| if (sb) { |
| if (this->attachStencilAttachmentToRenderTarget(sb, rt)) { |
| rt->renderTargetPriv().didAttachStencilAttachment(sb); |
| return true; |
| } |
| return false; |
| } |
| if (this->createStencilAttachmentForRenderTarget(rt, width, height)) { |
| // Right now we're clearing the stencil buffer here after it is |
| // attached to an RT for the first time. When we start matching |
| // stencil buffers with smaller color targets this will no longer |
| // be correct because it won't be guaranteed to clear the entire |
| // sb. |
| // We used to clear down in the GL subclass using a special purpose |
| // FBO. But iOS doesn't allow a stencil-only FBO. It reports unsupported |
| // FBO status. |
| this->clearStencil(rt); |
| GrStencilAttachment* sb = rt->renderTargetPriv().getStencilAttachment(); |
| sb->resourcePriv().setUniqueKey(sbKey); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| GrTexture* GrGpu::wrapBackendTexture(const GrBackendTextureDesc& desc) { |
| this->handleDirtyContext(); |
| GrTexture* tex = this->onWrapBackendTexture(desc); |
| if (NULL == tex) { |
| return NULL; |
| } |
| // TODO: defer this and attach dynamically |
| GrRenderTarget* tgt = tex->asRenderTarget(); |
| if (tgt && !this->attachStencilAttachmentToRenderTarget(tgt)) { |
| tex->unref(); |
| return NULL; |
| } else { |
| return tex; |
| } |
| } |
| |
| GrRenderTarget* GrGpu::wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc) { |
| this->handleDirtyContext(); |
| return this->onWrapBackendRenderTarget(desc); |
| } |
| |
| GrVertexBuffer* GrGpu::createVertexBuffer(size_t size, bool dynamic) { |
| this->handleDirtyContext(); |
| return this->onCreateVertexBuffer(size, dynamic); |
| } |
| |
| GrIndexBuffer* GrGpu::createIndexBuffer(size_t size, bool dynamic) { |
| this->handleDirtyContext(); |
| return this->onCreateIndexBuffer(size, dynamic); |
| } |
| |
| void GrGpu::clear(const SkIRect* rect, |
| GrColor color, |
| bool canIgnoreRect, |
| GrRenderTarget* renderTarget) { |
| SkASSERT(renderTarget); |
| this->handleDirtyContext(); |
| this->onClear(renderTarget, rect, color, canIgnoreRect); |
| } |
| |
| void GrGpu::clearStencilClip(const SkIRect& rect, |
| bool insideClip, |
| GrRenderTarget* renderTarget) { |
| SkASSERT(renderTarget); |
| this->handleDirtyContext(); |
| this->onClearStencilClip(renderTarget, rect, insideClip); |
| } |
| |
| bool GrGpu::readPixels(GrRenderTarget* target, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer, |
| size_t rowBytes) { |
| this->handleDirtyContext(); |
| return this->onReadPixels(target, left, top, width, height, |
| config, buffer, rowBytes); |
| } |
| |
| bool GrGpu::writeTexturePixels(GrTexture* texture, |
| int left, int top, int width, int height, |
| GrPixelConfig config, const void* buffer, |
| size_t rowBytes) { |
| this->handleDirtyContext(); |
| if (this->onWriteTexturePixels(texture, left, top, width, height, |
| config, buffer, rowBytes)) { |
| fStats.incTextureUploads(); |
| return true; |
| } |
| return false; |
| } |
| |
| void GrGpu::resolveRenderTarget(GrRenderTarget* target) { |
| SkASSERT(target); |
| this->handleDirtyContext(); |
| this->onResolveRenderTarget(target); |
| } |
| |
| typedef GrTraceMarkerSet::Iter TMIter; |
| void GrGpu::saveActiveTraceMarkers() { |
| if (this->caps()->gpuTracingSupport()) { |
| SkASSERT(0 == fStoredTraceMarkers.count()); |
| fStoredTraceMarkers.addSet(fActiveTraceMarkers); |
| for (TMIter iter = fStoredTraceMarkers.begin(); iter != fStoredTraceMarkers.end(); ++iter) { |
| this->removeGpuTraceMarker(&(*iter)); |
| } |
| } |
| } |
| |
| void GrGpu::restoreActiveTraceMarkers() { |
| if (this->caps()->gpuTracingSupport()) { |
| SkASSERT(0 == fActiveTraceMarkers.count()); |
| for (TMIter iter = fStoredTraceMarkers.begin(); iter != fStoredTraceMarkers.end(); ++iter) { |
| this->addGpuTraceMarker(&(*iter)); |
| } |
| for (TMIter iter = fActiveTraceMarkers.begin(); iter != fActiveTraceMarkers.end(); ++iter) { |
| this->fStoredTraceMarkers.remove(*iter); |
| } |
| } |
| } |
| |
| void GrGpu::addGpuTraceMarker(const GrGpuTraceMarker* marker) { |
| if (this->caps()->gpuTracingSupport()) { |
| SkASSERT(fGpuTraceMarkerCount >= 0); |
| this->fActiveTraceMarkers.add(*marker); |
| this->didAddGpuTraceMarker(); |
| ++fGpuTraceMarkerCount; |
| } |
| } |
| |
| void GrGpu::removeGpuTraceMarker(const GrGpuTraceMarker* marker) { |
| if (this->caps()->gpuTracingSupport()) { |
| SkASSERT(fGpuTraceMarkerCount >= 1); |
| this->fActiveTraceMarkers.remove(*marker); |
| this->didRemoveGpuTraceMarker(); |
| --fGpuTraceMarkerCount; |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrGpu::draw(const DrawArgs& args, const GrDrawTarget::DrawInfo& info) { |
| this->handleDirtyContext(); |
| this->onDraw(args, info); |
| } |
| |
| void GrGpu::stencilPath(const GrPath* path, const StencilPathState& state) { |
| this->handleDirtyContext(); |
| this->onStencilPath(path, state); |
| } |
| |
| void GrGpu::drawPath(const DrawArgs& args, |
| const GrPath* path, |
| const GrStencilSettings& stencilSettings) { |
| this->handleDirtyContext(); |
| this->onDrawPath(args, path, stencilSettings); |
| } |
| |
| void GrGpu::drawPaths(const DrawArgs& args, |
| const GrPathRange* pathRange, |
| const void* indices, |
| GrDrawTarget::PathIndexType indexType, |
| const float transformValues[], |
| GrDrawTarget::PathTransformType transformType, |
| int count, |
| const GrStencilSettings& stencilSettings) { |
| this->handleDirtyContext(); |
| pathRange->willDrawPaths(indices, indexType, count); |
| this->onDrawPaths(args, pathRange, indices, indexType, transformValues, |
| transformType, count, stencilSettings); |
| } |