| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkSurface_Gpu.h" |
| |
| #include "GrResourceProvider.h" |
| #include "SkCanvas.h" |
| #include "SkGpuDevice.h" |
| #include "SkImage_Base.h" |
| #include "SkImage_Gpu.h" |
| #include "SkImagePriv.h" |
| #include "SkSurface_Base.h" |
| |
| #if SK_SUPPORT_GPU |
| |
| SkSurface_Gpu::SkSurface_Gpu(SkGpuDevice* device) |
| : INHERITED(device->width(), device->height(), &device->surfaceProps()) |
| , fDevice(SkRef(device)) { |
| } |
| |
| SkSurface_Gpu::~SkSurface_Gpu() { |
| fDevice->unref(); |
| } |
| |
| static GrRenderTarget* prepare_rt_for_external_access(SkSurface_Gpu* surface, |
| SkSurface::BackendHandleAccess access) { |
| switch (access) { |
| case SkSurface::kFlushRead_BackendHandleAccess: |
| break; |
| case SkSurface::kFlushWrite_BackendHandleAccess: |
| case SkSurface::kDiscardWrite_BackendHandleAccess: |
| // for now we don't special-case on Discard, but we may in the future. |
| surface->notifyContentWillChange(SkSurface::kRetain_ContentChangeMode); |
| // legacy: need to dirty the bitmap's genID in our device (curse it) |
| surface->getDevice()->accessBitmap(false).notifyPixelsChanged(); |
| break; |
| } |
| |
| // Grab the render target *after* firing notifications, as it may get switched if CoW kicks in. |
| GrRenderTarget* rt = surface->getDevice()->accessRenderTarget(); |
| rt->prepareForExternalIO(); |
| return rt; |
| } |
| |
| GrBackendObject SkSurface_Gpu::onGetTextureHandle(BackendHandleAccess access) { |
| GrRenderTarget* rt = prepare_rt_for_external_access(this, access); |
| GrTexture* texture = rt->asTexture(); |
| if (texture) { |
| return texture->getTextureHandle(); |
| } |
| return 0; |
| } |
| |
| bool SkSurface_Gpu::onGetRenderTargetHandle(GrBackendObject* obj, BackendHandleAccess access) { |
| GrRenderTarget* rt = prepare_rt_for_external_access(this, access); |
| *obj = rt->getRenderTargetHandle(); |
| return true; |
| } |
| |
| SkCanvas* SkSurface_Gpu::onNewCanvas() { |
| SkCanvas::InitFlags flags = SkCanvas::kDefault_InitFlags; |
| flags = static_cast<SkCanvas::InitFlags>(flags | SkCanvas::kConservativeRasterClip_InitFlag); |
| |
| return new SkCanvas(fDevice, flags); |
| } |
| |
| SkSurface* SkSurface_Gpu::onNewSurface(const SkImageInfo& info) { |
| GrRenderTarget* rt = fDevice->accessRenderTarget(); |
| int sampleCount = rt->numColorSamples(); |
| // TODO: Make caller specify this (change virtual signature of onNewSurface). |
| static const SkBudgeted kBudgeted = SkBudgeted::kNo; |
| return SkSurface::NewRenderTarget(fDevice->context(), kBudgeted, info, sampleCount, |
| &this->props()); |
| } |
| |
| SkImage* SkSurface_Gpu::onNewImageSnapshot(SkBudgeted budgeted, ForceCopyMode forceCopyMode) { |
| GrRenderTarget* rt = fDevice->accessRenderTarget(); |
| SkASSERT(rt); |
| GrTexture* tex = rt->asTexture(); |
| SkAutoTUnref<GrTexture> copy; |
| // TODO: Force a copy when the rt is an external resource. |
| if (kYes_ForceCopyMode == forceCopyMode || !tex) { |
| GrSurfaceDesc desc = fDevice->accessRenderTarget()->desc(); |
| GrContext* ctx = fDevice->context(); |
| desc.fFlags = desc.fFlags & ~kRenderTarget_GrSurfaceFlag; |
| copy.reset(ctx->textureProvider()->createTexture(desc, budgeted)); |
| if (!copy) { |
| return nullptr; |
| } |
| if (!ctx->copySurface(copy, rt)) { |
| return nullptr; |
| } |
| tex = copy; |
| } |
| const SkImageInfo info = fDevice->imageInfo(); |
| SkImage* image = nullptr; |
| if (tex) { |
| image = new SkImage_Gpu(info.width(), info.height(), kNeedNewImageUniqueID, |
| info.alphaType(), tex, budgeted); |
| } |
| return image; |
| } |
| |
| // Create a new render target and, if necessary, copy the contents of the old |
| // render target into it. Note that this flushes the SkGpuDevice but |
| // doesn't force an OpenGL flush. |
| void SkSurface_Gpu::onCopyOnWrite(ContentChangeMode mode) { |
| GrRenderTarget* rt = fDevice->accessRenderTarget(); |
| // are we sharing our render target with the image? Note this call should never create a new |
| // image because onCopyOnWrite is only called when there is a cached image. |
| SkAutoTUnref<SkImage> image(this->refCachedImage(SkBudgeted::kNo, kNo_ForceUnique)); |
| SkASSERT(image); |
| if (rt->asTexture() == as_IB(image)->getTexture()) { |
| this->fDevice->replaceRenderTarget(SkSurface::kRetain_ContentChangeMode == mode); |
| SkTextureImageApplyBudgetedDecision(image); |
| } else if (kDiscard_ContentChangeMode == mode) { |
| this->SkSurface_Gpu::onDiscard(); |
| } |
| } |
| |
| void SkSurface_Gpu::onDiscard() { |
| fDevice->accessRenderTarget()->discard(); |
| } |
| |
| void SkSurface_Gpu::onPrepareForExternalIO() { |
| fDevice->accessRenderTarget()->prepareForExternalIO(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkSurface* SkSurface::NewRenderTargetDirect(GrRenderTarget* target, const SkSurfaceProps* props) { |
| SkAutoTUnref<SkGpuDevice> device( |
| SkGpuDevice::Create(target, props, SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return new SkSurface_Gpu(device); |
| } |
| |
| SkSurface* SkSurface::NewRenderTarget(GrContext* ctx, SkBudgeted budgeted, const SkImageInfo& info, |
| int sampleCount, const SkSurfaceProps* props, |
| GrTextureStorageAllocator customAllocator) { |
| SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create( |
| ctx, budgeted, info, sampleCount, props, SkGpuDevice::kClear_InitContents, |
| customAllocator)); |
| if (!device) { |
| return nullptr; |
| } |
| return new SkSurface_Gpu(device); |
| } |
| |
| SkSurface* SkSurface::NewFromBackendTexture(GrContext* context, const GrBackendTextureDesc& desc, |
| const SkSurfaceProps* props) { |
| if (nullptr == context) { |
| return nullptr; |
| } |
| if (!SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag)) { |
| return nullptr; |
| } |
| SkAutoTUnref<GrSurface> surface(context->textureProvider()->wrapBackendTexture(desc, |
| kBorrow_GrWrapOwnership)); |
| if (!surface) { |
| return nullptr; |
| } |
| SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(surface->asRenderTarget(), props, |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return new SkSurface_Gpu(device); |
| } |
| |
| SkSurface* SkSurface::NewFromBackendRenderTarget(GrContext* context, |
| const GrBackendRenderTargetDesc& desc, |
| const SkSurfaceProps* props) { |
| if (nullptr == context) { |
| return nullptr; |
| } |
| SkAutoTUnref<GrRenderTarget> rt(context->textureProvider()->wrapBackendRenderTarget(desc)); |
| if (!rt) { |
| return nullptr; |
| } |
| SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(rt, props, |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return new SkSurface_Gpu(device); |
| } |
| |
| SkSurface* SkSurface::NewFromBackendTextureAsRenderTarget(GrContext* context, |
| const GrBackendTextureDesc& desc, |
| const SkSurfaceProps* props) { |
| if (nullptr == context) { |
| return nullptr; |
| } |
| SkAutoTUnref<GrRenderTarget> rt( |
| context->resourceProvider()->wrapBackendTextureAsRenderTarget(desc)); |
| if (!rt) { |
| return nullptr; |
| } |
| SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(rt, props, |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return new SkSurface_Gpu(device); |
| } |
| |
| #endif |