gecko-dev/gfx/layers/composite/TiledContentHost.cpp

519 lines
18 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "TiledContentHost.h"
#include "ThebesLayerComposite.h" // for ThebesLayerComposite
#include "mozilla/gfx/BaseSize.h" // for BaseSize
#include "mozilla/gfx/Matrix.h" // for Matrix4x4
#include "mozilla/layers/Compositor.h" // for Compositor
#include "mozilla/layers/Effects.h" // for TexturedEffect, Effect, etc
#include "mozilla/layers/TextureHostOGL.h" // for TextureHostOGL
#include "nsAString.h"
#include "nsDebug.h" // for NS_WARNING
#include "nsPoint.h" // for nsIntPoint
#include "nsPrintfCString.h" // for nsPrintfCString
#include "nsRect.h" // for nsIntRect
#include "nsSize.h" // for nsIntSize
#include "mozilla/layers/TiledContentClient.h"
class gfxReusableSurfaceWrapper;
namespace mozilla {
using namespace gfx;
namespace layers {
class Layer;
TiledLayerBufferComposite::TiledLayerBufferComposite()
: mFrameResolution(1.0)
, mHasDoubleBufferedTiles(false)
, mUninitialized(true)
{}
/* static */ void
TiledLayerBufferComposite::RecycleCallback(TextureHost* textureHost, void* aClosure)
{
textureHost->CompositorRecycle();
}
TiledLayerBufferComposite::TiledLayerBufferComposite(ISurfaceAllocator* aAllocator,
const SurfaceDescriptorTiles& aDescriptor,
const nsIntRegion& aOldPaintedRegion)
{
mUninitialized = false;
mHasDoubleBufferedTiles = false;
mValidRegion = aDescriptor.validRegion();
mPaintedRegion = aDescriptor.paintedRegion();
mRetainedWidth = aDescriptor.retainedWidth();
mRetainedHeight = aDescriptor.retainedHeight();
mResolution = aDescriptor.resolution();
mFrameResolution = CSSToParentLayerScale(aDescriptor.frameResolution());
// Combine any valid content that wasn't already uploaded
nsIntRegion oldPaintedRegion(aOldPaintedRegion);
oldPaintedRegion.And(oldPaintedRegion, mValidRegion);
mPaintedRegion.Or(mPaintedRegion, oldPaintedRegion);
const InfallibleTArray<TileDescriptor>& tiles = aDescriptor.tiles();
for(size_t i = 0; i < tiles.Length(); i++) {
RefPtr<TextureHost> texture;
const TileDescriptor& tileDesc = tiles[i];
switch (tileDesc.type()) {
case TileDescriptor::TTexturedTileDescriptor : {
texture = TextureHost::AsTextureHost(tileDesc.get_TexturedTileDescriptor().textureParent());
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
if (!gfxPrefs::LayersUseSimpleTiles()) {
texture->SetRecycleCallback(RecycleCallback, nullptr);
}
#endif
const TileLock& ipcLock = tileDesc.get_TexturedTileDescriptor().sharedLock();
nsRefPtr<gfxSharedReadLock> sharedLock;
if (ipcLock.type() == TileLock::TShmemSection) {
sharedLock = gfxShmSharedReadLock::Open(aAllocator, ipcLock.get_ShmemSection());
} else {
sharedLock = reinterpret_cast<gfxMemorySharedReadLock*>(ipcLock.get_uintptr_t());
if (sharedLock) {
// The corresponding AddRef is in TiledClient::GetTileDescriptor
sharedLock->Release();
}
}
mRetainedTiles.AppendElement(TileHost(sharedLock, texture));
break;
}
default:
NS_WARNING("Unrecognised tile descriptor type");
// Fall through
case TileDescriptor::TPlaceholderTileDescriptor :
mRetainedTiles.AppendElement(GetPlaceholderTile());
break;
}
if (texture && !texture->HasInternalBuffer()) {
mHasDoubleBufferedTiles = true;
}
}
}
void
TiledLayerBufferComposite::ReadUnlock()
{
if (!IsValid()) {
return;
}
for (size_t i = 0; i < mRetainedTiles.Length(); i++) {
mRetainedTiles[i].ReadUnlock();
}
}
void
TiledLayerBufferComposite::ReleaseTextureHosts()
{
if (!IsValid()) {
return;
}
for (size_t i = 0; i < mRetainedTiles.Length(); i++) {
mRetainedTiles[i].mTextureHost = nullptr;
}
}
void
TiledLayerBufferComposite::Upload()
{
if(!IsValid()) {
return;
}
// The TextureClients were created with the TextureFlags::IMMEDIATE_UPLOAD flag,
// so calling Update on all the texture hosts will perform the texture upload.
Update(mValidRegion, mPaintedRegion);
ClearPaintedRegion();
}
TileHost
TiledLayerBufferComposite::ValidateTile(TileHost aTile,
const nsIntPoint& aTileOrigin,
const nsIntRegion& aDirtyRect)
{
if (aTile.IsPlaceholderTile()) {
NS_WARNING("Placeholder tile encountered in painted region");
return aTile;
}
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
printf_stderr("Upload tile %i, %i\n", aTileOrigin.x, aTileOrigin.y);
long start = PR_IntervalNow();
#endif
MOZ_ASSERT(aTile.mTextureHost->GetFlags() & TextureFlags::IMMEDIATE_UPLOAD);
// We possibly upload the entire texture contents here. This is a purposeful
// decision, as sub-image upload can often be slow and/or unreliable, but
// we may want to reevaluate this in the future.
// For !HasInternalBuffer() textures, this is likely a no-op.
aTile.mTextureHost->Updated(nullptr);
#ifdef GFX_TILEDLAYER_PREF_WARNINGS
if (PR_IntervalNow() - start > 1) {
printf_stderr("Tile Time to upload %i\n", PR_IntervalNow() - start);
}
#endif
return aTile;
}
void
TiledLayerBufferComposite::SetCompositor(Compositor* aCompositor)
{
if (!IsValid()) {
return;
}
for (size_t i = 0; i < mRetainedTiles.Length(); i++) {
if (mRetainedTiles[i].IsPlaceholderTile()) continue;
mRetainedTiles[i].mTextureHost->SetCompositor(aCompositor);
}
}
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
void
TiledLayerBufferComposite::SetReleaseFence(const android::sp<android::Fence>& aReleaseFence)
{
for (size_t i = 0; i < mRetainedTiles.Length(); i++) {
if (!mRetainedTiles[i].mTextureHost) {
continue;
}
TextureHostOGL* texture = mRetainedTiles[i].mTextureHost->AsHostOGL();
if (!texture) {
continue;
}
texture->SetReleaseFence(new android::Fence(aReleaseFence->dup()));
}
}
#endif
TiledContentHost::TiledContentHost(const TextureInfo& aTextureInfo)
: ContentHost(aTextureInfo)
, mTiledBuffer(TiledLayerBufferComposite())
, mLowPrecisionTiledBuffer(TiledLayerBufferComposite())
, mOldTiledBuffer(TiledLayerBufferComposite())
, mOldLowPrecisionTiledBuffer(TiledLayerBufferComposite())
, mPendingUpload(false)
, mPendingLowPrecisionUpload(false)
{
MOZ_COUNT_CTOR(TiledContentHost);
}
TiledContentHost::~TiledContentHost()
{
MOZ_COUNT_DTOR(TiledContentHost);
// Unlock any buffers that may still be locked. If we have a pending upload,
// we will need to unlock the buffer that was about to be uploaded.
// If a buffer that was being composited had double-buffered tiles, we will
// need to unlock that buffer too.
if (mPendingUpload) {
mTiledBuffer.ReadUnlock();
if (mOldTiledBuffer.HasDoubleBufferedTiles()) {
mOldTiledBuffer.ReadUnlock();
}
} else if (mTiledBuffer.HasDoubleBufferedTiles()) {
mTiledBuffer.ReadUnlock();
}
if (mPendingLowPrecisionUpload) {
mLowPrecisionTiledBuffer.ReadUnlock();
if (mOldLowPrecisionTiledBuffer.HasDoubleBufferedTiles()) {
mOldLowPrecisionTiledBuffer.ReadUnlock();
}
} else if (mLowPrecisionTiledBuffer.HasDoubleBufferedTiles()) {
mLowPrecisionTiledBuffer.ReadUnlock();
}
}
void
TiledContentHost::Attach(Layer* aLayer,
Compositor* aCompositor,
AttachFlags aFlags /* = NO_FLAGS */)
{
CompositableHost::Attach(aLayer, aCompositor, aFlags);
static_cast<ThebesLayerComposite*>(aLayer)->EnsureTiled();
}
void
TiledContentHost::UseTiledLayerBuffer(ISurfaceAllocator* aAllocator,
const SurfaceDescriptorTiles& aTiledDescriptor)
{
if (aTiledDescriptor.resolution() < 1) {
if (mPendingLowPrecisionUpload) {
mLowPrecisionTiledBuffer.ReadUnlock();
} else {
mPendingLowPrecisionUpload = true;
// If the old buffer has double-buffered tiles, hang onto it so we can
// unlock it after we've composited the new buffer.
// We only need to hang onto the locks, but not the textures.
// Releasing the textures here can help prevent a memory spike in the
// situation that the client starts rendering new content before we get
// to composite the new buffer.
if (mLowPrecisionTiledBuffer.HasDoubleBufferedTiles()) {
mOldLowPrecisionTiledBuffer = mLowPrecisionTiledBuffer;
mOldLowPrecisionTiledBuffer.ReleaseTextureHosts();
}
}
mLowPrecisionTiledBuffer =
TiledLayerBufferComposite(aAllocator, aTiledDescriptor,
mLowPrecisionTiledBuffer.GetPaintedRegion());
} else {
if (mPendingUpload) {
mTiledBuffer.ReadUnlock();
} else {
mPendingUpload = true;
if (mTiledBuffer.HasDoubleBufferedTiles()) {
mOldTiledBuffer = mTiledBuffer;
mOldTiledBuffer.ReleaseTextureHosts();
}
}
mTiledBuffer = TiledLayerBufferComposite(aAllocator, aTiledDescriptor,
mTiledBuffer.GetPaintedRegion());
}
}
void
TiledContentHost::Composite(EffectChain& aEffectChain,
float aOpacity,
const gfx::Matrix4x4& aTransform,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
const nsIntRegion* aVisibleRegion /* = nullptr */,
TiledLayerProperties* aLayerProperties /* = nullptr */)
{
MOZ_ASSERT(aLayerProperties, "aLayerProperties required for TiledContentHost");
if (mPendingUpload) {
mTiledBuffer.SetCompositor(mCompositor);
mTiledBuffer.Upload();
// For a single-buffered tiled buffer, Upload will upload the shared memory
// surface to texture memory and we no longer need to read from them.
if (!mTiledBuffer.HasDoubleBufferedTiles()) {
mTiledBuffer.ReadUnlock();
}
}
if (mPendingLowPrecisionUpload) {
mLowPrecisionTiledBuffer.SetCompositor(mCompositor);
mLowPrecisionTiledBuffer.Upload();
if (!mLowPrecisionTiledBuffer.HasDoubleBufferedTiles()) {
mLowPrecisionTiledBuffer.ReadUnlock();
}
}
RenderLayerBuffer(mLowPrecisionTiledBuffer, aEffectChain, aOpacity, aFilter,
aClipRect, aLayerProperties->mVisibleRegion, aTransform);
RenderLayerBuffer(mTiledBuffer, aEffectChain, aOpacity, aFilter,
aClipRect, aLayerProperties->mVisibleRegion, aTransform);
// Now release the old buffer if it had double-buffered tiles, as we can
// guarantee that they're no longer on the screen (and so any locks that may
// have been held have been released).
if (mPendingUpload && mOldTiledBuffer.HasDoubleBufferedTiles()) {
mOldTiledBuffer.ReadUnlock();
mOldTiledBuffer = TiledLayerBufferComposite();
}
if (mPendingLowPrecisionUpload && mOldLowPrecisionTiledBuffer.HasDoubleBufferedTiles()) {
mOldLowPrecisionTiledBuffer.ReadUnlock();
mOldLowPrecisionTiledBuffer = TiledLayerBufferComposite();
}
mPendingUpload = mPendingLowPrecisionUpload = false;
}
void
TiledContentHost::RenderTile(const TileHost& aTile,
EffectChain& aEffectChain,
float aOpacity,
const gfx::Matrix4x4& aTransform,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
const nsIntRegion& aScreenRegion,
const nsIntPoint& aTextureOffset,
const nsIntSize& aTextureBounds)
{
if (aTile.IsPlaceholderTile()) {
// This shouldn't ever happen, but let's fail semi-gracefully. No need
// to warn, the texture update would have already caught this.
return;
}
nsIntRect screenBounds = aScreenRegion.GetBounds();
Rect quad(screenBounds.x, screenBounds.y, screenBounds.width, screenBounds.height);
quad = aTransform.TransformBounds(quad);
if (!quad.Intersects(mCompositor->ClipRectInLayersCoordinates(aClipRect))) {
return;
}
AutoLockTextureHost autoLock(aTile.mTextureHost);
if (autoLock.Failed()) {
NS_WARNING("Failed to lock tile");
return;
}
RefPtr<NewTextureSource> source = aTile.mTextureHost->GetTextureSources();
if (!source) {
return;
}
RefPtr<TexturedEffect> effect =
CreateTexturedEffect(aTile.mTextureHost->GetFormat(), source, aFilter);
if (!effect) {
return;
}
aEffectChain.mPrimaryEffect = effect;
nsIntRegionRectIterator it(aScreenRegion);
for (const nsIntRect* rect = it.Next(); rect != nullptr; rect = it.Next()) {
Rect graphicsRect(rect->x, rect->y, rect->width, rect->height);
Rect textureRect(rect->x - aTextureOffset.x, rect->y - aTextureOffset.y,
rect->width, rect->height);
effect->mTextureCoords = Rect(textureRect.x / aTextureBounds.width,
textureRect.y / aTextureBounds.height,
textureRect.width / aTextureBounds.width,
textureRect.height / aTextureBounds.height);
mCompositor->DrawQuad(graphicsRect, aClipRect, aEffectChain, aOpacity, aTransform);
}
mCompositor->DrawDiagnostics(DiagnosticFlags::CONTENT | DiagnosticFlags::TILE,
aScreenRegion, aClipRect, aTransform, mFlashCounter);
}
void
TiledContentHost::RenderLayerBuffer(TiledLayerBufferComposite& aLayerBuffer,
EffectChain& aEffectChain,
float aOpacity,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
nsIntRegion aVisibleRegion,
gfx::Matrix4x4 aTransform)
{
if (!mCompositor) {
NS_WARNING("Can't render tiled content host - no compositor");
return;
}
float resolution = aLayerBuffer.GetResolution();
gfx::Size layerScale(1, 1);
// We assume that the current frame resolution is the one used in our high
// precision layer buffer. Compensate for a changing frame resolution when
// rendering the low precision buffer.
if (aLayerBuffer.GetFrameResolution() != mTiledBuffer.GetFrameResolution()) {
const CSSToParentLayerScale& layerResolution = aLayerBuffer.GetFrameResolution();
const CSSToParentLayerScale& localResolution = mTiledBuffer.GetFrameResolution();
layerScale.width = layerScale.height = layerResolution.scale / localResolution.scale;
aVisibleRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// If we're drawing the low precision buffer, make sure the high precision
// buffer is masked out to avoid overdraw and rendering artifacts with
// non-opaque layers.
nsIntRegion maskRegion;
if (resolution != mTiledBuffer.GetResolution()) {
maskRegion = mTiledBuffer.GetValidRegion();
// XXX This should be ScaleRoundIn, but there is no such function on
// nsIntRegion.
maskRegion.ScaleRoundOut(layerScale.width, layerScale.height);
}
// Make sure the resolution and difference in frame resolution are accounted
// for in the layer transform.
aTransform.Scale(1/(resolution * layerScale.width),
1/(resolution * layerScale.height), 1);
uint32_t rowCount = 0;
uint32_t tileX = 0;
nsIntRect visibleRect = aVisibleRegion.GetBounds();
gfx::IntSize scaledTileSize = aLayerBuffer.GetScaledTileSize();
for (int32_t x = visibleRect.x; x < visibleRect.x + visibleRect.width;) {
rowCount++;
int32_t tileStartX = aLayerBuffer.GetTileStart(x, scaledTileSize.width);
int32_t w = scaledTileSize.width - tileStartX;
if (x + w > visibleRect.x + visibleRect.width) {
w = visibleRect.x + visibleRect.width - x;
}
int tileY = 0;
for (int32_t y = visibleRect.y; y < visibleRect.y + visibleRect.height;) {
int32_t tileStartY = aLayerBuffer.GetTileStart(y, scaledTileSize.height);
int32_t h = scaledTileSize.height - tileStartY;
if (y + h > visibleRect.y + visibleRect.height) {
h = visibleRect.y + visibleRect.height - y;
}
TileHost tileTexture = aLayerBuffer.
GetTile(nsIntPoint(aLayerBuffer.RoundDownToTileEdge(x, scaledTileSize.width),
aLayerBuffer.RoundDownToTileEdge(y, scaledTileSize.height)));
if (tileTexture != aLayerBuffer.GetPlaceholderTile()) {
nsIntRegion tileDrawRegion;
tileDrawRegion.And(nsIntRect(x, y, w, h), aLayerBuffer.GetValidRegion());
tileDrawRegion.And(tileDrawRegion, aVisibleRegion);
tileDrawRegion.Sub(tileDrawRegion, maskRegion);
if (!tileDrawRegion.IsEmpty()) {
tileDrawRegion.ScaleRoundOut(resolution, resolution);
nsIntPoint tileOffset((x - tileStartX) * resolution,
(y - tileStartY) * resolution);
gfx::IntSize tileSize = aLayerBuffer.GetTileSize();
RenderTile(tileTexture, aEffectChain, aOpacity, aTransform, aFilter, aClipRect, tileDrawRegion,
tileOffset, nsIntSize(tileSize.width, tileSize.height));
}
}
tileY++;
y += h;
}
tileX++;
x += w;
}
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
GetCompositor()->DrawDiagnostics(DiagnosticFlags::CONTENT,
rect, aClipRect, aTransform, mFlashCounter);
}
void
TiledContentHost::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
aTo += nsPrintfCString("TiledContentHost (0x%p)", this);
}
#ifdef MOZ_DUMP_PAINTING
void
TiledContentHost::Dump(FILE* aFile,
const char* aPrefix,
bool aDumpHtml)
{
if (!aFile) {
aFile = stderr;
}
TiledLayerBufferComposite::Iterator it = mTiledBuffer.TilesBegin();
TiledLayerBufferComposite::Iterator stop = mTiledBuffer.TilesEnd();
if (aDumpHtml) {
fprintf_stderr(aFile, "<ul>");
}
for (;it != stop; ++it) {
fprintf_stderr(aFile, "%s", aPrefix);
fprintf_stderr(aFile, aDumpHtml ? "<li> <a href=" : "Tile ");
if (it->IsPlaceholderTile()) {
fprintf_stderr(aFile, "empty tile");
} else {
DumpTextureHost(aFile, it->mTextureHost);
}
fprintf_stderr(aFile, aDumpHtml ? " >Tile</a></li>" : " ");
}
if (aDumpHtml) {
fprintf_stderr(aFile, "</ul>");
}
}
#endif
} // namespace
} // namespace