| /* |
| * 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 "GrBackendSurface.h" |
| #include "GrContextPriv.h" |
| #include "GrRenderTargetContextPriv.h" |
| #include "GrResourceProvider.h" |
| |
| #include "SkCanvas.h" |
| #include "SkColorSpace_Base.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(sk_sp<SkGpuDevice> device) |
| : INHERITED(device->width(), device->height(), &device->surfaceProps()) |
| , fDevice(std::move(device)) { |
| SkASSERT(fDevice->accessRenderTargetContext()->asSurfaceProxy()->priv().isExact()); |
| } |
| |
| SkSurface_Gpu::~SkSurface_Gpu() { |
| } |
| |
| 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); |
| break; |
| } |
| |
| // Grab the render target *after* firing notifications, as it may get switched if CoW kicks in. |
| surface->getDevice()->flush(); |
| GrRenderTargetContext* rtc = surface->getDevice()->accessRenderTargetContext(); |
| return rtc->accessRenderTarget(); |
| } |
| |
| GrBackendObject SkSurface_Gpu::onGetTextureHandle(BackendHandleAccess access) { |
| GrRenderTarget* rt = prepare_rt_for_external_access(this, access); |
| if (!rt) { |
| return 0; |
| } |
| 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); |
| if (!rt) { |
| return false; |
| } |
| *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.get(), flags); |
| } |
| |
| sk_sp<SkSurface> SkSurface_Gpu::onNewSurface(const SkImageInfo& info) { |
| int sampleCount = fDevice->accessRenderTargetContext()->numColorSamples(); |
| GrSurfaceOrigin origin = fDevice->accessRenderTargetContext()->origin(); |
| // TODO: Make caller specify this (change virtual signature of onNewSurface). |
| static const SkBudgeted kBudgeted = SkBudgeted::kNo; |
| return SkSurface::MakeRenderTarget(fDevice->context(), kBudgeted, info, sampleCount, |
| origin, &this->props()); |
| } |
| |
| sk_sp<SkImage> SkSurface_Gpu::onNewImageSnapshot() { |
| GrRenderTargetContext* rtc = fDevice->accessRenderTargetContext(); |
| if (!rtc) { |
| return nullptr; |
| } |
| |
| GrContext* ctx = fDevice->context(); |
| |
| if (!rtc->asSurfaceProxy()) { |
| return nullptr; |
| } |
| |
| SkBudgeted budgeted = rtc->asSurfaceProxy()->isBudgeted(); |
| |
| sk_sp<GrTextureProxy> srcProxy = rtc->asTextureProxyRef(); |
| // If the original render target is a buffer originally created by the client, then we don't |
| // want to ever retarget the SkSurface at another buffer we create. Force a copy now to avoid |
| // copy-on-write. |
| if (!srcProxy || rtc->priv().refsWrappedObjects()) { |
| // MDB TODO: replace this with GrSurfaceProxy::Copy? |
| GrSurfaceDesc desc = rtc->desc(); |
| desc.fFlags = desc.fFlags & ~kRenderTarget_GrSurfaceFlag; |
| |
| sk_sp<GrSurfaceContext> copyCtx = ctx->contextPriv().makeDeferredSurfaceContext( |
| desc, |
| SkBackingFit::kExact, |
| budgeted); |
| if (!copyCtx) { |
| return nullptr; |
| } |
| |
| if (!copyCtx->copy(rtc->asSurfaceProxy())) { |
| return nullptr; |
| } |
| |
| srcProxy = copyCtx->asTextureProxyRef(); |
| } |
| |
| const SkImageInfo info = fDevice->imageInfo(); |
| sk_sp<SkImage> image; |
| if (srcProxy) { |
| // The renderTargetContext coming out of SkGpuDevice should always be exact and the |
| // above copy creates a kExact surfaceContext. |
| SkASSERT(srcProxy->priv().isExact()); |
| image = sk_make_sp<SkImage_Gpu>(ctx, kNeedNewImageUniqueID, |
| info.alphaType(), std::move(srcProxy), |
| info.refColorSpace(), 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->accessRenderTargetContext()->accessRenderTarget(); |
| if (!rt) { |
| return; |
| } |
| // 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. |
| sk_sp<SkImage> image(this->refCachedImage()); |
| SkASSERT(image); |
| // MDB TODO: this is unfortunate. The snapping of an Image_Gpu from a surface currently |
| // funnels down to a GrTexture. Once Image_Gpus are proxy-backed we should be able to |
| // compare proxy uniqueIDs. |
| if (rt->asTexture()->getTextureHandle() == image->getTextureHandle(false)) { |
| fDevice->replaceRenderTargetContext(SkSurface::kRetain_ContentChangeMode == mode); |
| } else if (kDiscard_ContentChangeMode == mode) { |
| this->SkSurface_Gpu::onDiscard(); |
| } |
| } |
| |
| void SkSurface_Gpu::onDiscard() { |
| fDevice->accessRenderTargetContext()->discard(); |
| } |
| |
| void SkSurface_Gpu::onPrepareForExternalIO() { |
| fDevice->flush(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkSurface_Gpu::Valid(const SkImageInfo& info) { |
| switch (info.colorType()) { |
| case kRGBA_F16_SkColorType: |
| return !info.colorSpace() || info.colorSpace()->gammaIsLinear(); |
| case kRGBA_8888_SkColorType: |
| case kBGRA_8888_SkColorType: |
| return !info.colorSpace() || info.colorSpace()->gammaCloseToSRGB(); |
| default: |
| return !info.colorSpace(); |
| } |
| } |
| |
| bool SkSurface_Gpu::Valid(GrContext* context, GrPixelConfig config, SkColorSpace* colorSpace) { |
| switch (config) { |
| case kRGBA_half_GrPixelConfig: |
| return !colorSpace || colorSpace->gammaIsLinear(); |
| case kSRGBA_8888_GrPixelConfig: |
| case kSBGRA_8888_GrPixelConfig: |
| return context->caps()->srgbSupport() && colorSpace && colorSpace->gammaCloseToSRGB(); |
| case kRGBA_8888_GrPixelConfig: |
| case kBGRA_8888_GrPixelConfig: |
| // If we don't have sRGB support, we may get here with a color space. It still needs |
| // to be sRGB-like (so that the application will work correctly on sRGB devices.) |
| return !colorSpace || |
| (colorSpace->gammaCloseToSRGB() && !context->caps()->srgbSupport()); |
| default: |
| return !colorSpace; |
| } |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeRenderTarget(GrContext* ctx, SkBudgeted budgeted, |
| const SkImageInfo& info, int sampleCount, |
| GrSurfaceOrigin origin, const SkSurfaceProps* props) { |
| if (!SkSurface_Gpu::Valid(info)) { |
| return nullptr; |
| } |
| |
| sk_sp<SkGpuDevice> device(SkGpuDevice::Make( |
| ctx, budgeted, info, sampleCount, origin, props, SkGpuDevice::kClear_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return sk_make_sp<SkSurface_Gpu>(std::move(device)); |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendTexture(GrContext* context, |
| const GrBackendTextureDesc& desc, |
| sk_sp<SkColorSpace> colorSpace, |
| const SkSurfaceProps* props) { |
| if (!context) { |
| return nullptr; |
| } |
| GrBackendTexture tex(desc, context->contextPriv().getBackend()); |
| return MakeFromBackendTexture(context, tex, desc.fOrigin, desc.fSampleCnt, colorSpace, props); |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendTexture(GrContext* context, const GrBackendTexture& tex, |
| GrSurfaceOrigin origin, int sampleCnt, |
| sk_sp<SkColorSpace> colorSpace, |
| const SkSurfaceProps* props) { |
| if (!context) { |
| return nullptr; |
| } |
| if (!SkSurface_Gpu::Valid(context, tex.config(), colorSpace.get())) { |
| return nullptr; |
| } |
| |
| sk_sp<GrRenderTargetContext> rtc(context->contextPriv().makeBackendTextureRenderTargetContext( |
| tex, |
| origin, |
| sampleCnt, |
| std::move(colorSpace), |
| props)); |
| if (!rtc) { |
| return nullptr; |
| } |
| |
| sk_sp<SkGpuDevice> device(SkGpuDevice::Make(context, std::move(rtc), tex.width(), tex.height(), |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return sk_make_sp<SkSurface_Gpu>(std::move(device)); |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendRenderTarget(GrContext* context, |
| const GrBackendRenderTargetDesc& desc, |
| sk_sp<SkColorSpace> colorSpace, |
| const SkSurfaceProps* props) { |
| if (!context) { |
| return nullptr; |
| } |
| if (!SkSurface_Gpu::Valid(context, desc.fConfig, colorSpace.get())) { |
| return nullptr; |
| } |
| |
| sk_sp<GrRenderTargetContext> rtc( |
| context->contextPriv().makeBackendRenderTargetRenderTargetContext(desc, |
| std::move(colorSpace), |
| props)); |
| if (!rtc) { |
| return nullptr; |
| } |
| |
| sk_sp<SkGpuDevice> device(SkGpuDevice::Make(context, std::move(rtc), desc.fWidth, desc.fHeight, |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| |
| return sk_make_sp<SkSurface_Gpu>(std::move(device)); |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendRenderTarget(GrContext*, |
| const GrBackendRenderTarget&, |
| GrSurfaceOrigin origin, |
| sk_sp<SkColorSpace>, |
| const SkSurfaceProps*) { |
| // This function is not implemented yet |
| sk_throw(); |
| return nullptr; |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendTextureAsRenderTarget(GrContext* context, |
| const GrBackendTextureDesc& desc, |
| sk_sp<SkColorSpace> colorSpace, |
| const SkSurfaceProps* props) { |
| if (!context) { |
| return nullptr; |
| } |
| GrBackendTexture tex(desc, context->contextPriv().getBackend()); |
| return MakeFromBackendTextureAsRenderTarget(context, tex, desc.fOrigin, desc.fSampleCnt, |
| std::move(colorSpace), props); |
| } |
| |
| sk_sp<SkSurface> SkSurface::MakeFromBackendTextureAsRenderTarget(GrContext* context, |
| const GrBackendTexture& tex, |
| GrSurfaceOrigin origin, |
| int sampleCnt, |
| sk_sp<SkColorSpace> colorSpace, |
| const SkSurfaceProps* props) { |
| if (!context) { |
| return nullptr; |
| } |
| if (!SkSurface_Gpu::Valid(context, tex.config(), colorSpace.get())) { |
| return nullptr; |
| } |
| |
| sk_sp<GrRenderTargetContext> rtc( |
| context->contextPriv().makeBackendTextureAsRenderTargetRenderTargetContext( |
| tex, |
| origin, |
| sampleCnt, |
| std::move(colorSpace), |
| props)); |
| if (!rtc) { |
| return nullptr; |
| } |
| |
| sk_sp<SkGpuDevice> device(SkGpuDevice::Make(context, std::move(rtc), tex.width(), tex.height(), |
| SkGpuDevice::kUninit_InitContents)); |
| if (!device) { |
| return nullptr; |
| } |
| return sk_make_sp<SkSurface_Gpu>(std::move(device)); |
| } |
| |
| #endif |
