gecko/gfx/layers/composite/TiledContentHost.cpp
Chris Lord 4e165082f4 Bug 983169 - Fix up TiledLayerHost rendering method. r=BenWa
A few parts of this function weren't quite right. The major change is to use
the TiledLayerBuffer's valid region instead of the layer's valid region.
These are the same, except when progressive rendering is enabled, where the
former may differ from the layyer (and will represent what has actually been
updated).
2014-03-27 18:52:08 +00:00

518 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 TEXTURE_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() & TEXTURE_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(DIAGNOSTIC_CONTENT|DIAGNOSTIC_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();
for (int32_t x = visibleRect.x; x < visibleRect.x + visibleRect.width;) {
rowCount++;
int32_t tileStartX = aLayerBuffer.GetTileStart(x);
int32_t w = aLayerBuffer.GetScaledTileLength() - 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);
int32_t h = aLayerBuffer.GetScaledTileLength() - tileStartY;
if (y + h > visibleRect.y + visibleRect.height) {
h = visibleRect.y + visibleRect.height - y;
}
TileHost tileTexture = aLayerBuffer.
GetTile(nsIntPoint(aLayerBuffer.RoundDownToTileEdge(x),
aLayerBuffer.RoundDownToTileEdge(y)));
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);
uint32_t tileSize = aLayerBuffer.GetTileLength();
RenderTile(tileTexture, aEffectChain, aOpacity, aTransform, aFilter, aClipRect, tileDrawRegion,
tileOffset, nsIntSize(tileSize, tileSize));
}
}
tileY++;
y += h;
}
tileX++;
x += w;
}
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
GetCompositor()->DrawDiagnostics(DIAGNOSTIC_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