| |
| /* |
| * 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 "GrStencilBuffer.h" |
| #include "GrVertexBuffer.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrGpu::GrGpu(GrContext* context) |
| : fResetTimestamp(kExpiredTimestamp+1) |
| , fResetBits(kAll_GrBackendState) |
| , fQuadIndexBuffer(NULL) |
| , fContext(context) { |
| } |
| |
| GrGpu::~GrGpu() { |
| SkSafeSetNull(fQuadIndexBuffer); |
| } |
| |
| void GrGpu::contextAbandoned() {} |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrTexture* GrGpu::createTexture(const GrSurfaceDesc& desc, bool budgeted, |
| const void* srcData, size_t rowBytes) { |
| 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 (GrPixelConfigIsCompressed(desc.fConfig)) { |
| // We shouldn't be rendering into this |
| SkASSERT((desc.fFlags & kRenderTarget_GrSurfaceFlag) == 0); |
| |
| if (!this->caps()->npotTextureTileSupport() && |
| (!SkIsPow2(desc.fWidth) || !SkIsPow2(desc.fHeight))) { |
| return NULL; |
| } |
| |
| this->handleDirtyContext(); |
| tex = this->onCreateCompressedTexture(desc, budgeted, srcData); |
| } else { |
| this->handleDirtyContext(); |
| tex = this->onCreateTexture(desc, budgeted, srcData, rowBytes); |
| if (tex && |
| (kRenderTarget_GrSurfaceFlag & desc.fFlags) && |
| !(kNoStencil_GrSurfaceFlag & desc.fFlags)) { |
| SkASSERT(tex->asRenderTarget()); |
| // TODO: defer this and attach dynamically |
| if (!this->attachStencilBufferToRenderTarget(tex->asRenderTarget())) { |
| tex->unref(); |
| return NULL; |
| } |
| } |
| } |
| if (!this->caps()->reuseScratchTextures() && !isRT) { |
| tex->resourcePriv().removeScratchKey(); |
| } |
| if (tex) { |
| fStats.incTextureCreates(); |
| if (srcData) { |
| fStats.incTextureUploads(); |
| } |
| } |
| return tex; |
| } |
| |
| bool GrGpu::attachStencilBufferToRenderTarget(GrRenderTarget* rt) { |
| SkASSERT(NULL == rt->getStencilBuffer()); |
| GrUniqueKey sbKey; |
| GrStencilBuffer::ComputeSharedStencilBufferKey(rt->width(), rt->height(), rt->numSamples(), |
| &sbKey); |
| SkAutoTUnref<GrStencilBuffer> sb(static_cast<GrStencilBuffer*>( |
| this->getContext()->getResourceCache()->findAndRefUniqueResource(sbKey))); |
| if (sb) { |
| rt->setStencilBuffer(sb); |
| bool attached = this->attachStencilBufferToRenderTarget(sb, rt); |
| if (!attached) { |
| rt->setStencilBuffer(NULL); |
| } |
| return attached; |
| } |
| if (this->createStencilBufferForRenderTarget(rt, rt->width(), rt->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); |
| rt->getStencilBuffer()->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->attachStencilBufferToRenderTarget(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); |
| } |
| |
| GrIndexBuffer* GrGpu::createInstancedIndexBuffer(const uint16_t* pattern, |
| int patternSize, |
| int reps, |
| int vertCount, |
| bool isDynamic) { |
| size_t bufferSize = patternSize * reps * sizeof(uint16_t); |
| GrGpu* me = const_cast<GrGpu*>(this); |
| GrIndexBuffer* buffer = me->createIndexBuffer(bufferSize, isDynamic); |
| if (buffer) { |
| uint16_t* data = (uint16_t*) buffer->map(); |
| bool useTempData = (NULL == data); |
| if (useTempData) { |
| data = SkNEW_ARRAY(uint16_t, reps * patternSize); |
| } |
| for (int i = 0; i < reps; ++i) { |
| int baseIdx = i * patternSize; |
| uint16_t baseVert = (uint16_t)(i * vertCount); |
| for (int j = 0; j < patternSize; ++j) { |
| data[baseIdx+j] = baseVert + pattern[j]; |
| } |
| } |
| if (useTempData) { |
| if (!buffer->updateData(data, bufferSize)) { |
| SkFAIL("Can't get indices into buffer!"); |
| } |
| SkDELETE_ARRAY(data); |
| } else { |
| buffer->unmap(); |
| } |
| } |
| return buffer; |
| } |
| |
| 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; |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static const int MAX_QUADS = 1 << 12; // max possible: (1 << 14) - 1; |
| |
| GR_STATIC_ASSERT(4 * MAX_QUADS <= 65535); |
| |
| static const uint16_t gQuadIndexPattern[] = { |
| 0, 1, 2, 0, 2, 3 |
| }; |
| |
| const GrIndexBuffer* GrGpu::getQuadIndexBuffer() const { |
| if (NULL == fQuadIndexBuffer || fQuadIndexBuffer->wasDestroyed()) { |
| SkSafeUnref(fQuadIndexBuffer); |
| GrGpu* me = const_cast<GrGpu*>(this); |
| fQuadIndexBuffer = me->createInstancedIndexBuffer(gQuadIndexPattern, |
| 6, |
| MAX_QUADS, |
| 4); |
| } |
| |
| return fQuadIndexBuffer; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| 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); |
| } |