From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 16:29:10 +0200
Subject: Adding upstream version 86.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 gfx/layers/mlgpu/LayerMLGPU.cpp | 141 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 gfx/layers/mlgpu/LayerMLGPU.cpp

(limited to 'gfx/layers/mlgpu/LayerMLGPU.cpp')

diff --git a/gfx/layers/mlgpu/LayerMLGPU.cpp b/gfx/layers/mlgpu/LayerMLGPU.cpp
new file mode 100644
index 0000000000..714214e83b
--- /dev/null
+++ b/gfx/layers/mlgpu/LayerMLGPU.cpp
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "LayerManagerMLGPU.h"
+#include "RenderPassMLGPU.h"
+#include "RenderViewMLGPU.h"
+#include "FrameBuilder.h"
+#include "mozilla/layers/ImageHost.h"
+#include "mozilla/layers/LayerManagerComposite.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace gfx;
+
+uint64_t LayerMLGPU::sFrameKey = 0;
+
+LayerMLGPU::~LayerMLGPU() = default;
+
+LayerMLGPU::LayerMLGPU(LayerManagerMLGPU* aManager)
+    : HostLayer(aManager),
+      mFrameKey(0),
+      mComputedOpacity(0.0),
+      mPrepared(false) {}
+
+/* static */
+void LayerMLGPU::BeginFrame() { sFrameKey++; }
+
+LayerManagerMLGPU* LayerMLGPU::GetManager() {
+  return static_cast<LayerManagerMLGPU*>(mCompositorManager);
+}
+
+bool LayerMLGPU::PrepareToRender(FrameBuilder* aBuilder,
+                                 const RenderTargetIntRect& aClipRect) {
+  if (mFrameKey == sFrameKey) {
+    return mPrepared;
+  }
+  mFrameKey = sFrameKey;
+  mPrepared = false;
+
+  Layer* layer = GetLayer();
+
+  // Only container layers may have mixed blend modes.
+  MOZ_ASSERT_IF(layer->GetMixBlendMode() != CompositionOp::OP_OVER,
+                layer->GetType() == Layer::TYPE_CONTAINER);
+
+  mComputedClipRect = aClipRect;
+  mComputedOpacity = layer->GetEffectiveOpacity();
+
+  if (layer->HasMaskLayers()) {
+    mMask = aBuilder->AddMaskOperation(this);
+    // If the mask has no texture, the pixel shader can't read any non-zero
+    // values for the mask, so we can consider the whole thing invisible.
+    if (mMask && mMask->IsEmpty()) {
+      mComputedOpacity = 0.0f;
+    }
+  } else {
+    mMask = nullptr;
+  }
+
+  if (!OnPrepareToRender(aBuilder)) {
+    return false;
+  }
+
+  mPrepared = true;
+  return true;
+}
+
+void LayerMLGPU::AssignToView(FrameBuilder* aBuilder, RenderViewMLGPU* aView,
+                              Maybe<gfx::Polygon>&& aGeometry) {
+  AddBoundsToView(aBuilder, aView, std::move(aGeometry));
+}
+
+void LayerMLGPU::AddBoundsToView(FrameBuilder* aBuilder, RenderViewMLGPU* aView,
+                                 Maybe<gfx::Polygon>&& aGeometry) {
+  IntRect bounds = GetClippedBoundingBox(aView, aGeometry);
+  aView->AddItem(this, bounds, std::move(aGeometry));
+}
+
+IntRect LayerMLGPU::GetClippedBoundingBox(
+    RenderViewMLGPU* aView, const Maybe<gfx::Polygon>& aGeometry) {
+  MOZ_ASSERT(IsPrepared());
+
+  Layer* layer = GetLayer();
+  const Matrix4x4& transform = layer->GetEffectiveTransform();
+
+  Rect rect =
+      aGeometry
+          ? aGeometry->BoundingBox()
+          : Rect(layer->GetLocalVisibleRegion().GetBounds().ToUnknownRect());
+  rect = transform.TransformBounds(rect);
+  rect.MoveBy(-aView->GetTargetOffset());
+  rect = rect.Intersect(Rect(mComputedClipRect.ToUnknownRect()));
+
+  IntRect bounds;
+  rect.RoundOut();
+  rect.ToIntRect(&bounds);
+  return bounds;
+}
+
+void LayerMLGPU::MarkPrepared() {
+  mFrameKey = sFrameKey;
+  mPrepared = true;
+}
+
+bool LayerMLGPU::IsContentOpaque() { return GetLayer()->IsOpaque(); }
+
+void LayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion) {
+  mRenderRegion = std::move(aRegion);
+}
+
+void LayerMLGPU::SetLayerManager(HostLayerManager* aManager) {
+  LayerManagerMLGPU* manager = aManager->AsLayerManagerMLGPU();
+  MOZ_RELEASE_ASSERT(manager);
+
+  HostLayer::SetLayerManager(aManager);
+  GetLayer()->SetManager(manager, this);
+
+  if (CompositableHost* host = GetCompositableHost()) {
+    host->SetTextureSourceProvider(manager->GetTextureSourceProvider());
+  }
+
+  OnLayerManagerChange(manager);
+}
+
+RefLayerMLGPU::RefLayerMLGPU(LayerManagerMLGPU* aManager)
+    : RefLayer(aManager, static_cast<HostLayer*>(this)), LayerMLGPU(aManager) {}
+
+RefLayerMLGPU::~RefLayerMLGPU() = default;
+
+ColorLayerMLGPU::ColorLayerMLGPU(LayerManagerMLGPU* aManager)
+    : ColorLayer(aManager, static_cast<HostLayer*>(this)),
+      LayerMLGPU(aManager) {}
+
+ColorLayerMLGPU::~ColorLayerMLGPU() = default;
+
+}  // namespace layers
+}  // namespace mozilla
-- 
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