skgpu::graphite::RenderPassTask Class Reference

#include <RenderPassTask.h>

Inheritance diagram for skgpu::graphite::RenderPassTask:

Public Types
using	DrawPassList = skia_private::STArray< 1, std::unique_ptr< DrawPass > >
Public Types inherited from skgpu::graphite::Task
enum class	Status { kSuccess , kDiscard , kFail }

Public Member Functions
	~RenderPassTask () override
Status	prepareResources (ResourceProvider *, const RuntimeEffectDictionary *) override
Status	addCommands (Context *, CommandBuffer *, ReplayTargetData) override
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Static Public Member Functions
static sk_sp< RenderPassTask >	Make (DrawPassList, const RenderPassDesc &, sk_sp< TextureProxy > target)

Detailed Description

RenderPassTask handles preparing and recording DrawLists into a single render pass within a command buffer. If the backend supports subpasses, and the DrawLists/surfaces are compatible, a RenderPassTask can execute multiple DrawLists across different surfaces as subpasses nested within a single render pass. If there is no such support, a RenderPassTask is one-to-one with a "render pass" to specific surface.

Definition at line 26 of file RenderPassTask.h.

Member Typedef Documentation

DrawPassList

using skgpu::graphite::RenderPassTask::DrawPassList = skia_private::STArray<1, std::unique_ptr<DrawPass> >

Definition at line 28 of file RenderPassTask.h.

Constructor & Destructor Documentation

~RenderPassTask()

skgpu::graphite::RenderPassTask::~RenderPassTask ( )

overridedefault

Member Function Documentation

addCommands()

Task::Status skgpu::graphite::RenderPassTask::addCommands ( Context *  context, CommandBuffer *  commandBuffer, ReplayTargetData  replayData  )

overridevirtual

Implements skgpu::graphite::Task.

Definition at line 71 of file RenderPassTask.cpp.

                                                                      {
    // TBD: Expose the surfaces that will need to be attached within the renderpass?
 
    // TODO: for task execution, start the render pass, then iterate passes and
    // possibly(?) start each subpass, and call DrawPass::addCommands() on the command buffer
    // provided to the task. Then close the render pass and we should have pixels..
 
    // Instantiate the target
    SkASSERT(fTarget && fTarget->isInstantiated());
 
    if (fTarget->texture() == replayData.fTarget) {
        commandBuffer->setReplayTranslation(replayData.fTranslation);
    } else {
        commandBuffer->clearReplayTranslation();
    }
 
    // We don't instantiate the MSAA or DS attachments in prepareResources because we want to use
    // the discardable attachments from the Context.
    ResourceProvider* resourceProvider = context->priv().resourceProvider();
    sk_sp<Texture> colorAttachment;
    sk_sp<Texture> resolveAttachment;
    if (fRenderPassDesc.fColorResolveAttachment.fTextureInfo.isValid()) {
        SkASSERT(fTarget->numSamples() == 1 &&
                 fRenderPassDesc.fColorAttachment.fTextureInfo.numSamples() > 1);
        colorAttachment = resourceProvider->findOrCreateDiscardableMSAAAttachment(
                fTarget->dimensions(), fRenderPassDesc.fColorAttachment.fTextureInfo);
        if (!colorAttachment) {
            SKGPU_LOG_W("Could not get Color attachment for RenderPassTask");
            return Status::kFail;
        }
        resolveAttachment = fTarget->refTexture();
    } else {
        colorAttachment = fTarget->refTexture();
    }
 
    sk_sp<Texture> depthStencilAttachment;
    if (fRenderPassDesc.fDepthStencilAttachment.fTextureInfo.isValid()) {
        // TODO: ensure this is a scratch/recycled texture
        SkASSERT(fTarget->isInstantiated());
        SkISize dimensions = context->priv().caps()->getDepthAttachmentDimensions(
                fTarget->texture()->textureInfo(), fTarget->dimensions());
        depthStencilAttachment = resourceProvider->findOrCreateDepthStencilAttachment(
                dimensions, fRenderPassDesc.fDepthStencilAttachment.fTextureInfo);
        if (!depthStencilAttachment) {
            SKGPU_LOG_W("Could not get DepthStencil attachment for RenderPassTask");
            return Status::kFail;
        }
    }
 
    // TODO(b/313629288) we always pass in the render target's dimensions as the viewport here.
    // Using the dimensions of the logical device that we're drawing to could reduce flakiness in
    // rendering.
    if (commandBuffer->addRenderPass(fRenderPassDesc,
                                     std::move(colorAttachment),
                                     std::move(resolveAttachment),
                                     std::move(depthStencilAttachment),
                                     SkRect::Make(fTarget->dimensions()),
                                     fDrawPasses)) {
        return Status::kSuccess;
    } else {
        return Status::kFail;
    }
}

Make()

sk_sp< RenderPassTask > skgpu::graphite::RenderPassTask::Make ( DrawPassList  passes, const RenderPassDesc &  desc, sk_sp< TextureProxy >  target  )

static

Definition at line 21 of file RenderPassTask.cpp.

                                                                       {
    // For now we have one DrawPass per RenderPassTask
    SkASSERT(passes.size() == 1);
    if (!target) {
        return nullptr;
    }
 
    if (desc.fColorAttachment.fTextureInfo.isValid()) {
        // The color attachment's samples count must ether match the render pass's samples count
        // or be 1 (when multisampled render to single sampled is used).
        SkASSERT(desc.fSampleCount == desc.fColorAttachment.fTextureInfo.numSamples() ||
                 1 == desc.fColorAttachment.fTextureInfo.numSamples());
    }
 
    if (desc.fDepthStencilAttachment.fTextureInfo.isValid()) {
        SkASSERT(desc.fSampleCount == desc.fDepthStencilAttachment.fTextureInfo.numSamples());
    }
 
    return sk_sp<RenderPassTask>(new RenderPassTask(std::move(passes), desc, target));
}

prepareResources()

Task::Status skgpu::graphite::RenderPassTask::prepareResources ( ResourceProvider *  resourceProvider, const RuntimeEffectDictionary *  runtimeDict  )

overridevirtual

Implements skgpu::graphite::Task.

Definition at line 51 of file RenderPassTask.cpp.

                                                                                          {
    SkASSERT(fTarget);
    if (!TextureProxy::InstantiateIfNotLazy(resourceProvider, fTarget.get())) {
        SKGPU_LOG_W("Failed to instantiate RenderPassTask target. Will not create renderpass!");
        SKGPU_LOG_W("Dimensions are (%d, %d).",
                    fTarget->dimensions().width(), fTarget->dimensions().height());
        return Status::kFail;
    }
 
    // Assuming one draw pass per renderpasstask for now
    SkASSERT(fDrawPasses.size() == 1);
    for (const auto& drawPass: fDrawPasses) {
        if (!drawPass->prepareResources(resourceProvider, runtimeDict, fRenderPassDesc)) {
            return Status::kFail;
        }
    }
    return Status::kSuccess;
}

---

The documentation for this class was generated from the following files:

• third_party/skia/src/gpu/graphite/task/RenderPassTask.h
• third_party/skia/src/gpu/graphite/task/RenderPassTask.cpp