blob: d23a3b4e9452e246350ab390e77506b7c45d22e6 [file] [log] [blame]
* Copyright 2021 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "src/gpu/graphite/RenderPassTask.h"
#include "src/gpu/graphite/CommandBuffer.h"
#include "src/gpu/graphite/ContextPriv.h"
#include "src/gpu/graphite/DrawPass.h"
#include "src/gpu/graphite/Log.h"
#include "src/gpu/graphite/ResourceProvider.h"
#include "src/gpu/graphite/Texture.h"
#include "src/gpu/graphite/TextureProxy.h"
namespace skgpu::graphite {
sk_sp<RenderPassTask> RenderPassTask::Make(std::vector<std::unique_ptr<DrawPass>> passes,
const RenderPassDesc& desc,
sk_sp<TextureProxy> target) {
// For now we have one DrawPass per RenderPassTask
SkASSERT(passes.size() == 1);
if (!target) {
return nullptr;
return sk_sp<RenderPassTask>(new RenderPassTask(std::move(passes), desc, target));
RenderPassTask::RenderPassTask(std::vector<std::unique_ptr<DrawPass>> passes,
const RenderPassDesc& desc,
sk_sp<TextureProxy> target)
: fDrawPasses(std::move(passes))
, fRenderPassDesc(desc)
, fTarget(std::move(target)) {}
RenderPassTask::~RenderPassTask() = default;
bool RenderPassTask::prepareResources(ResourceProvider* resourceProvider,
const RuntimeEffectDictionary* runtimeDict) {
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 false;
// Assuming one draw pass per renderpasstask for now
SkASSERT(fDrawPasses.size() == 1);
for (const auto& drawPass: fDrawPasses) {
if (!drawPass->prepareResources(resourceProvider, runtimeDict, fRenderPassDesc)) {
return false;
return true;
bool RenderPassTask::addCommands(Context* context, CommandBuffer* commandBuffer) {
// 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());
// 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 false;
resolveAttachment = fTarget->refTexture();
} else {
colorAttachment = fTarget->refTexture();
sk_sp<Texture> depthStencilAttachment;
if (fRenderPassDesc.fDepthStencilAttachment.fTextureInfo.isValid()) {
// TODO: ensure this is a scratch/recycled texture
depthStencilAttachment = resourceProvider->findOrCreateDepthStencilAttachment(
fTarget->dimensions(), fRenderPassDesc.fDepthStencilAttachment.fTextureInfo);
if (!depthStencilAttachment) {
SKGPU_LOG_W("Could not get DepthStencil attachment for RenderPassTask");
return false;
// TODO: We need to handle the case where we need to load the single sampled target's data into
// the discardable MSAA Surface. On different backends this will be done in various ways. On
// Metal we can simply insert a draw at the start of the render pass sampling the single target
// texture as normal. In Vulkan, we need to create a whole new subpass at the start, use the
// single sample resolve as an input attachment in that subpass, and then do a draw. The big
// thing with Vulkan is that this input attachment and subpass means we also need to update
// the fRenderPassDesc here.
return commandBuffer->addRenderPass(fRenderPassDesc,
} // namespace skgpu::graphite