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/* -*- 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 "PaintedLayerMLGPU.h"
#include "LayerManagerMLGPU.h"
#include "mozilla/layers/LayersHelpers.h"
#include "mozilla/layers/TiledContentHost.h"
#include "UnitTransforms.h"
namespace mozilla {
using namespace gfx;
namespace layers {
PaintedLayerMLGPU::PaintedLayerMLGPU(LayerManagerMLGPU* aManager)
: PaintedLayer(aManager, static_cast<HostLayer*>(this)),
LayerMLGPU(aManager) {
MOZ_COUNT_CTOR(PaintedLayerMLGPU);
}
PaintedLayerMLGPU::~PaintedLayerMLGPU() {
MOZ_COUNT_DTOR(PaintedLayerMLGPU);
CleanupResources();
}
bool PaintedLayerMLGPU::OnPrepareToRender(FrameBuilder* aBuilder) {
// Reset our cached texture pointers. The next call to AssignToView will
// populate them again.
mTexture = nullptr;
mTextureOnWhite = nullptr;
return !!mHost;
}
void PaintedLayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion) {
mRenderRegion = std::move(aRegion);
LayerIntRect bounds(mRenderRegion.GetBounds().TopLeft(),
ViewAs<LayerPixel>(mTexture->GetSize()));
mRenderRegion.AndWith(bounds);
}
const LayerIntRegion& PaintedLayerMLGPU::GetDrawRects() {
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
// Note: we don't set PaintWillResample on our ContentTextureHost. The old
// compositor must do this since ContentHost is responsible for issuing
// draw calls, but in AL we can handle it directly here.
//
// Note that when AL performs CPU-based occlusion culling (the default
// behavior), we might break up the visible region again. If that turns
// out to be a problem, we can factor this into ForEachDrawRect instead.
if (MayResample()) {
mDrawRects = mRenderRegion.GetBounds();
return mDrawRects;
}
#endif
return mRenderRegion;
}
bool PaintedLayerMLGPU::SetCompositableHost(CompositableHost* aHost) {
switch (aHost->GetType()) {
case CompositableType::CONTENT_TILED:
case CompositableType::CONTENT_SINGLE:
case CompositableType::CONTENT_DOUBLE: {
if (mHost && mHost != aHost->AsContentHost()) {
mHost->Detach(this);
}
mHost = aHost->AsContentHost();
if (!mHost) {
gfxWarning() << "ContentHostBase is not a ContentHostTexture";
}
return true;
}
default:
return false;
}
}
CompositableHost* PaintedLayerMLGPU::GetCompositableHost() { return mHost; }
gfx::Point PaintedLayerMLGPU::GetDestOrigin() const { return mDestOrigin; }
void PaintedLayerMLGPU::AssignToView(FrameBuilder* aBuilder,
RenderViewMLGPU* aView,
Maybe<Polygon>&& aGeometry) {
if (TiledContentHost* tiles = mHost->AsTiledContentHost()) {
// Note: we do not support the low-res buffer yet.
MOZ_ASSERT(tiles->GetLowResBuffer().GetTileCount() == 0);
AssignHighResTilesToView(aBuilder, aView, tiles, aGeometry);
return;
}
// If we don't have a texture yet, acquire one from the ContentHost now.
if (!mTexture) {
ContentHostTexture* single = mHost->AsContentHostTexture();
if (!single) {
return;
}
mTexture = single->AcquireTextureSource();
if (!mTexture) {
return;
}
mTextureOnWhite = single->AcquireTextureSourceOnWhite();
mDestOrigin = single->GetOriginOffset();
}
// Fall through to the single texture case.
LayerMLGPU::AssignToView(aBuilder, aView, std::move(aGeometry));
}
void PaintedLayerMLGPU::AssignHighResTilesToView(
FrameBuilder* aBuilder, RenderViewMLGPU* aView, TiledContentHost* aTileHost,
const Maybe<Polygon>& aGeometry) {
TiledLayerBufferComposite& tiles = aTileHost->GetHighResBuffer();
LayerIntRegion compositeRegion = ViewAs<LayerPixel>(tiles.GetValidRegion());
compositeRegion.AndWith(GetShadowVisibleRegion());
if (compositeRegion.IsEmpty()) {
return;
}
AssignTileBufferToView(aBuilder, aView, tiles, compositeRegion, aGeometry);
}
void PaintedLayerMLGPU::AssignTileBufferToView(
FrameBuilder* aBuilder, RenderViewMLGPU* aView,
TiledLayerBufferComposite& aTiles, const LayerIntRegion& aCompositeRegion,
const Maybe<Polygon>& aGeometry) {
float resolution = aTiles.GetResolution();
// Save these so they can be restored at the end.
float baseOpacity = mComputedOpacity;
LayerIntRegion visible = GetShadowVisibleRegion();
for (size_t i = 0; i < aTiles.GetTileCount(); i++) {
TileHost& tile = aTiles.GetTile(i);
if (tile.IsPlaceholderTile()) {
continue;
}
TileCoordIntPoint coord = aTiles.GetPlacement().TileCoord(i);
// A sanity check that catches a lot of mistakes.
MOZ_ASSERT(coord.x == tile.mTileCoord.x && coord.y == tile.mTileCoord.y);
IntPoint offset = aTiles.GetTileOffset(coord);
// Use LayerIntRect here so we don't have to keep re-allocating the region
// to change the unit type.
LayerIntRect tileRect(ViewAs<LayerPixel>(offset),
ViewAs<LayerPixel>(aTiles.GetScaledTileSize()));
LayerIntRegion tileDrawRegion = tileRect;
tileDrawRegion.AndWith(aCompositeRegion);
if (tileDrawRegion.IsEmpty()) {
continue;
}
tileDrawRegion.ScaleRoundOut(resolution, resolution);
// Update layer state for this tile - that includes the texture, visible
// region, and opacity.
mTexture = tile.AcquireTextureSource();
if (!mTexture) {
continue;
}
mTextureOnWhite = tile.AcquireTextureSourceOnWhite();
SetShadowVisibleRegion(tileDrawRegion);
mComputedOpacity = tile.GetFadeInOpacity(baseOpacity);
mDestOrigin = offset;
// Yes, it's a bit weird that we're assigning the same layer to the same
// view multiple times. Note that each time, the texture, computed
// opacity, origin, and visible region are updated to match the current
// tile, and we restore these properties after we've finished processing
// all tiles.
Maybe<Polygon> geometry = aGeometry;
LayerMLGPU::AssignToView(aBuilder, aView, std::move(geometry));
}
// Restore the computed opacity and visible region.
mComputedOpacity = baseOpacity;
SetShadowVisibleRegion(std::move(visible));
}
void PaintedLayerMLGPU::CleanupResources() {
if (mHost) {
mHost->Detach(this);
}
mTexture = nullptr;
mTextureOnWhite = nullptr;
mHost = nullptr;
}
void PaintedLayerMLGPU::PrintInfo(std::stringstream& aStream,
const char* aPrefix) {
PaintedLayer::PrintInfo(aStream, aPrefix);
if (mHost && mHost->IsAttached()) {
aStream << "\n";
nsAutoCString pfx(aPrefix);
pfx += " ";
mHost->PrintInfo(aStream, pfx.get());
}
}
void PaintedLayerMLGPU::Disconnect() { CleanupResources(); }
bool PaintedLayerMLGPU::IsContentOpaque() {
return !!(GetContentFlags() & CONTENT_OPAQUE);
}
void PaintedLayerMLGPU::CleanupCachedResources() { CleanupResources(); }
} // namespace layers
} // namespace mozilla
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