skgpu::graphite::DrawTask Class Reference

#include <DrawTask.h>

Inheritance diagram for skgpu::graphite::DrawTask:

Public Member Functions
	DrawTask (sk_sp< TextureProxy > target)
	~DrawTask () override
Status	prepareResources (ResourceProvider *, ScratchResourceManager *, const RuntimeEffectDictionary *) override
Status	addCommands (Context *, CommandBuffer *, ReplayTargetData) override
virtual Status	prepareResources (ResourceProvider *, ScratchResourceManager *, const RuntimeEffectDictionary *)=0
virtual Status	addCommands (Context *, CommandBuffer *, ReplayTargetData)=0
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Friends
class	DrawContext

Additional Inherited Members
Public Types inherited from skgpu::graphite::Task
enum class	Status { kSuccess , kDiscard , kFail }

Detailed Description

DrawTask is a collection of subtasks that are executed in order to produce some intended image in the DrawTask's target. As such, at least one of its subtasks will either be a RenderPassTask, ComputeTask or CopyXToTextureTask that directly modify the target.

Definition at line 24 of file DrawTask.h.

Constructor & Destructor Documentation

DrawTask()

skgpu::graphite::DrawTask::DrawTask ( sk_sp< TextureProxy >  target )

explicit

Definition at line 16 of file DrawTask.cpp.

: fTarget(std::move(target)) {}

~DrawTask()

skgpu::graphite::DrawTask::~DrawTask ( )

overridedefault

Member Function Documentation

addCommands()

Task::Status skgpu::graphite::DrawTask::addCommands ( Context *  ctx, CommandBuffer *  commandBuffer, ReplayTargetData  replayTarget  )

overridevirtual

Implements skgpu::graphite::Task.

Definition at line 65 of file DrawTask.cpp.

                                                                  {
    SkASSERT(fTarget->isInstantiated());
    return fChildTasks.addCommands(ctx, commandBuffer, replayTarget);
}

prepareResources()

Task::Status skgpu::graphite::DrawTask::prepareResources ( ResourceProvider *  resourceProvider, ScratchResourceManager *  scratchManager, const RuntimeEffectDictionary *  rteDict  )

overridevirtual

Implements skgpu::graphite::Task.

Definition at line 20 of file DrawTask.cpp.

                                                                                {
    const int pendingReadCount = scratchManager->pendingReadCount(fTarget.get());
    if (pendingReadCount) {
        // This DrawTask defines the content of a scratch device that has incremented the pending
        // read count before snap() was called. The target may have already been instantiated if
        // we've processed this task's children before.
        SkASSERT(!fTarget->isLazy());
        // Even though we may discard the task, we always want to mark it as in-use to track the
        // pending reads to know when to return the texture.;
        scratchManager->markResourceInUse(this);
 
        if (fPrepared) {
            // If the task has already had prepareResources() called once, it should have had
            // its target instantiated.
            SkASSERT(fTarget->isInstantiated());
            // Return kDiscard so that this reference to the task is removed and the original
            // encounter in the graph will be the only time addCommands() is invoked.
            return Status::kDiscard;
        }
    } else {
        // A non-scratch DrawTask should only ever be in the task graph one time.
        SkASSERT(!fPrepared);
    }
 
    fPrepared = true;
    // NOTE: This prepareResources() pushes a new scope for scratch resource management, which is
    // what we want since the child tasks are what will actually instantiate any scratch device and
    // trigger returns of any grand-child resources. The above markResourceInUse() should happen
    // above this so that pending returns are handled in caller's scope.
    return fChildTasks.prepareResources(resourceProvider, scratchManager, rteDict);
}

Friends And Related Function Documentation

DrawContext

friend class DrawContext

friend

Definition at line 36 of file DrawTask.h.

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

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