michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/layers/SimpleTiledContentClient.h"
michael@0: 
michael@0: #include <math.h>                       // for ceil, ceilf, floor
michael@0: #include "ClientTiledThebesLayer.h"     // for ClientTiledThebesLayer
michael@0: #include "GeckoProfiler.h"              // for PROFILER_LABEL
michael@0: #include "Units.h"                      // for ScreenIntRect, CSSPoint, etc
michael@0: #include "UnitTransforms.h"             // for TransformTo
michael@0: #include "ClientLayerManager.h"         // for ClientLayerManager
michael@0: #include "CompositorChild.h"            // for CompositorChild
michael@0: #include "gfxContext.h"                 // for gfxContext, etc
michael@0: #include "gfxPlatform.h"                // for gfxPlatform
michael@0: #include "gfxPrefs.h"                   // for gfxPrefs::LayersTileWidth/Height
michael@0: #include "gfxRect.h"                    // for gfxRect
michael@0: #include "mozilla/Attributes.h"         // for MOZ_THIS_IN_INITIALIZER_LIST
michael@0: #include "mozilla/MathAlgorithms.h"     // for Abs
michael@0: #include "mozilla/gfx/Point.h"          // for IntSize
michael@0: #include "mozilla/gfx/Rect.h"           // for Rect
michael@0: #include "mozilla/layers/CompositableForwarder.h"
michael@0: #include "mozilla/layers/ShadowLayers.h"  // for ShadowLayerForwarder
michael@0: #include "SimpleTextureClientPool.h"
michael@0: #include "nsDebug.h"                    // for NS_ASSERTION
michael@0: #include "nsISupportsImpl.h"            // for gfxContext::AddRef, etc
michael@0: #include "nsSize.h"                     // for nsIntSize
michael@0: #include "gfxReusableSharedImageSurfaceWrapper.h"
michael@0: #include "nsMathUtils.h"               // for NS_roundf
michael@0: #include "gfx2DGlue.h"
michael@0: 
michael@0: #define ALOG(...)  __android_log_print(ANDROID_LOG_INFO, "SimpleTiles", __VA_ARGS__)
michael@0: 
michael@0: using namespace mozilla::gfx;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: void
michael@0: SimpleTiledLayerBuffer::PaintThebes(const nsIntRegion& aNewValidRegion,
michael@0:                                     const nsIntRegion& aPaintRegion,
michael@0:                                     LayerManager::DrawThebesLayerCallback aCallback,
michael@0:                                     void* aCallbackData)
michael@0: {
michael@0:   mCallback = aCallback;
michael@0:   mCallbackData = aCallbackData;
michael@0: 
michael@0: #ifdef GFX_TILEDLAYER_PREF_WARNINGS
michael@0:   long start = PR_IntervalNow();
michael@0: #endif
michael@0: 
michael@0:   // If this region is empty XMost() - 1 will give us a negative value.
michael@0:   NS_ASSERTION(!aPaintRegion.GetBounds().IsEmpty(), "Empty paint region\n");
michael@0: 
michael@0:   PROFILER_LABEL("SimpleTiledLayerBuffer", "PaintThebesUpdate");
michael@0: 
michael@0:   Update(aNewValidRegion, aPaintRegion);
michael@0: 
michael@0: #ifdef GFX_TILEDLAYER_PREF_WARNINGS
michael@0:   if (PR_IntervalNow() - start > 10) {
michael@0:     const nsIntRect bounds = aPaintRegion.GetBounds();
michael@0:     printf_stderr("Time to tile [%i, %i, %i, %i] -> %i\n", bounds.x, bounds.y, bounds.width, bounds.height, PR_IntervalNow() - start);
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   mLastPaintOpaque = mThebesLayer->CanUseOpaqueSurface();
michael@0:   mCallback = nullptr;
michael@0:   mCallbackData = nullptr;
michael@0: }
michael@0: 
michael@0: SimpleTiledLayerTile
michael@0: SimpleTiledLayerBuffer::ValidateTile(SimpleTiledLayerTile aTile,
michael@0:                                      const nsIntPoint& aTileOrigin,
michael@0:                                      const nsIntRegion& aDirtyRegion)
michael@0: {
michael@0:   PROFILER_LABEL("SimpleTiledLayerBuffer", "ValidateTile");
michael@0:   static gfx::IntSize kTileSize(gfxPrefs::LayersTileWidth(), gfxPrefs::LayersTileHeight());
michael@0: 
michael@0:   gfx::SurfaceFormat tileFormat = gfxPlatform::GetPlatform()->Optimal2DFormatForContent(GetContentType());
michael@0: 
michael@0:   // if this is true, we're using a separate buffer to do our drawing first
michael@0:   bool doBufferedDrawing = true;
michael@0:   bool fullPaint = false;
michael@0: 
michael@0:   RefPtr<TextureClient> textureClient = mManager->GetSimpleTileTexturePool(tileFormat)->GetTextureClientWithAutoRecycle();
michael@0: 
michael@0:   if (!textureClient) {
michael@0:     NS_WARNING("TextureClient allocation failed");
michael@0:     return SimpleTiledLayerTile();
michael@0:   }
michael@0: 
michael@0:   if (!textureClient->Lock(OPEN_READ_WRITE)) {
michael@0:     NS_WARNING("TextureClient lock failed");
michael@0:     return SimpleTiledLayerTile();
michael@0:   }
michael@0: 
michael@0:   if (!textureClient->CanExposeDrawTarget()) {
michael@0:     doBufferedDrawing = false;
michael@0:   }
michael@0: 
michael@0:   RefPtr<DrawTarget> drawTarget;
michael@0: 
michael@0:   unsigned char *bufferData = nullptr;
michael@0: 
michael@0:   // these are set/updated differently based on doBufferedDrawing
michael@0:   nsIntRect drawBounds;
michael@0:   nsIntRegion drawRegion;
michael@0:   nsIntRegion invalidateRegion;
michael@0: 
michael@0:   RefPtr<DrawTarget> srcDT;
michael@0:   uint8_t* srcData = nullptr;
michael@0:   int32_t srcStride = 0;
michael@0:   gfx::IntSize srcSize;
michael@0:   gfx::SurfaceFormat srcFormat = gfx::SurfaceFormat::UNKNOWN;
michael@0: 
michael@0:   if (doBufferedDrawing) {
michael@0:     // try to directly access the pixels of the TextureClient
michael@0:     srcDT = textureClient->GetAsDrawTarget();
michael@0:     if (srcDT->LockBits(&srcData, &srcSize, &srcStride, &srcFormat)) {
michael@0:       if (!aTile.mCachedBuffer) {
michael@0:         aTile.mCachedBuffer = SharedBuffer::Create(srcStride * srcSize.height);
michael@0:         fullPaint = true;
michael@0:       }
michael@0:       bufferData = (unsigned char*) aTile.mCachedBuffer->Data();
michael@0: 
michael@0:       drawTarget = gfxPlatform::GetPlatform()->CreateDrawTargetForData(bufferData,
michael@0:                                                                        kTileSize,
michael@0:                                                                        srcStride,
michael@0:                                                                        tileFormat);
michael@0: 
michael@0:       if (fullPaint) {
michael@0:         drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileSize().width, GetScaledTileSize().height);
michael@0:         drawRegion = nsIntRegion(drawBounds);
michael@0:       } else {
michael@0:         drawBounds = aDirtyRegion.GetBounds();
michael@0:         drawRegion = nsIntRegion(drawBounds);
michael@0:         if (GetContentType() == gfxContentType::COLOR_ALPHA)
michael@0:           drawTarget->ClearRect(Rect(drawBounds.x - aTileOrigin.x, drawBounds.y - aTileOrigin.y,
michael@0:                                      drawBounds.width, drawBounds.height));
michael@0:       }
michael@0:     } else {
michael@0:       // failed to obtain the client as an ImageSurface
michael@0:       doBufferedDrawing = false;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // this might get set above if we couldn't extract out a buffer
michael@0:   if (!doBufferedDrawing) {
michael@0:     drawTarget = textureClient->GetAsDrawTarget();
michael@0: 
michael@0:     fullPaint = true;
michael@0:     drawBounds = nsIntRect(aTileOrigin.x, aTileOrigin.y, GetScaledTileSize().width, GetScaledTileSize().height);
michael@0:     drawRegion = nsIntRegion(drawBounds);
michael@0: 
michael@0:     if (GetContentType() == gfxContentType::COLOR_ALPHA)
michael@0:       drawTarget->ClearRect(Rect(0, 0, drawBounds.width, drawBounds.height));
michael@0:   }
michael@0: 
michael@0:   // do the drawing
michael@0:   RefPtr<gfxContext> ctxt = new gfxContext(drawTarget);
michael@0: 
michael@0:   ctxt->Scale(mResolution, mResolution);
michael@0:   ctxt->Translate(gfxPoint(-aTileOrigin.x, -aTileOrigin.y));
michael@0: 
michael@0:   mCallback(mThebesLayer, ctxt,
michael@0:             drawRegion,
michael@0:             fullPaint ? DrawRegionClip::CLIP_NONE : DrawRegionClip::DRAW_SNAPPED, // XXX DRAW or DRAW_SNAPPED?
michael@0:             invalidateRegion,
michael@0:             mCallbackData);
michael@0: 
michael@0:   ctxt = nullptr;
michael@0: 
michael@0:   if (doBufferedDrawing) {
michael@0:     memcpy(srcData, bufferData, srcSize.height * srcStride);
michael@0:     bufferData = nullptr;
michael@0:     srcDT->ReleaseBits(srcData);
michael@0:     srcDT = nullptr;
michael@0:   }
michael@0: 
michael@0:   drawTarget = nullptr;
michael@0:   textureClient->Unlock();
michael@0: 
michael@0:   if (!mCompositableClient->AddTextureClient(textureClient)) {
michael@0:     NS_WARNING("Failed to add tile TextureClient [simple]");
michael@0:     return SimpleTiledLayerTile();
michael@0:   }
michael@0: 
michael@0:   // aTile.mCachedBuffer was set earlier
michael@0:   aTile.mTileBuffer = textureClient;
michael@0:   aTile.mManager = mManager;
michael@0:   aTile.mLastUpdate = TimeStamp::Now();
michael@0: 
michael@0:   return aTile;
michael@0: }
michael@0: 
michael@0: SurfaceDescriptorTiles
michael@0: SimpleTiledLayerBuffer::GetSurfaceDescriptorTiles()
michael@0: {
michael@0:   InfallibleTArray<TileDescriptor> tiles;
michael@0: 
michael@0:   for (size_t i = 0; i < mRetainedTiles.Length(); i++) {
michael@0:     tiles.AppendElement(mRetainedTiles[i].GetTileDescriptor());
michael@0:   }
michael@0: 
michael@0:   return SurfaceDescriptorTiles(mValidRegion, mPaintedRegion,
michael@0:                                 tiles, mRetainedWidth, mRetainedHeight,
michael@0:                                 mResolution, mFrameResolution.scale);
michael@0: }
michael@0: 
michael@0: bool
michael@0: SimpleTiledLayerBuffer::HasFormatChanged() const
michael@0: {
michael@0:   return mThebesLayer->CanUseOpaqueSurface() != mLastPaintOpaque;
michael@0: }
michael@0: 
michael@0: gfxContentType
michael@0: SimpleTiledLayerBuffer::GetContentType() const
michael@0: {
michael@0:   if (mThebesLayer->CanUseOpaqueSurface())
michael@0:     return gfxContentType::COLOR;
michael@0: 
michael@0:   return gfxContentType::COLOR_ALPHA;
michael@0: }
michael@0: 
michael@0: SimpleTiledContentClient::SimpleTiledContentClient(SimpleClientTiledThebesLayer* aThebesLayer,
michael@0:                                                    ClientLayerManager* aManager)
michael@0:   : CompositableClient(aManager->AsShadowForwarder())
michael@0:   , mTiledBuffer(aThebesLayer, MOZ_THIS_IN_INITIALIZER_LIST(), aManager)
michael@0: {
michael@0:   MOZ_COUNT_CTOR(SimpleTiledContentClient);
michael@0: }
michael@0: 
michael@0: SimpleTiledContentClient::~SimpleTiledContentClient()
michael@0: {
michael@0:   MOZ_COUNT_DTOR(SimpleTiledContentClient);
michael@0:   mTiledBuffer.Release();
michael@0: }
michael@0: 
michael@0: void
michael@0: SimpleTiledContentClient::UseTiledLayerBuffer()
michael@0: {
michael@0:   mForwarder->UseTiledLayerBuffer(this, mTiledBuffer.GetSurfaceDescriptorTiles());
michael@0:   mTiledBuffer.ClearPaintedRegion();
michael@0: }
michael@0: 
michael@0: SimpleClientTiledThebesLayer::SimpleClientTiledThebesLayer(ClientLayerManager* aManager)
michael@0:   : ThebesLayer(aManager,
michael@0:                 static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))
michael@0:   , mContentClient()
michael@0: {
michael@0:   MOZ_COUNT_CTOR(SimpleClientTiledThebesLayer);
michael@0: }
michael@0: 
michael@0: SimpleClientTiledThebesLayer::~SimpleClientTiledThebesLayer()
michael@0: {
michael@0:   MOZ_COUNT_DTOR(SimpleClientTiledThebesLayer);
michael@0: }
michael@0: 
michael@0: void
michael@0: SimpleClientTiledThebesLayer::FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
michael@0: {
michael@0:   aAttrs = ThebesLayerAttributes(GetValidRegion());
michael@0: }
michael@0: 
michael@0: void
michael@0: SimpleClientTiledThebesLayer::RenderLayer()
michael@0: {
michael@0:   LayerManager::DrawThebesLayerCallback callback =
michael@0:     ClientManager()->GetThebesLayerCallback();
michael@0:   void *data = ClientManager()->GetThebesLayerCallbackData();
michael@0:   if (!callback) {
michael@0:     ClientManager()->SetTransactionIncomplete();
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // First time? Create a content client.
michael@0:   if (!mContentClient) {
michael@0:     mContentClient = new SimpleTiledContentClient(this, ClientManager());
michael@0: 
michael@0:     mContentClient->Connect();
michael@0:     ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
michael@0:     MOZ_ASSERT(mContentClient->GetForwarder());
michael@0:   }
michael@0: 
michael@0:   // If the format changed, nothing is valid
michael@0:   if (mContentClient->mTiledBuffer.HasFormatChanged()) {
michael@0:     mValidRegion = nsIntRegion();
michael@0:   }
michael@0: 
michael@0:   nsIntRegion invalidRegion = mVisibleRegion;
michael@0:   invalidRegion.Sub(invalidRegion, mValidRegion);
michael@0:   if (invalidRegion.IsEmpty()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // Only paint the mask layer on the first transaction.
michael@0:   if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
michael@0:     ToClientLayer(GetMaskLayer())->RenderLayer();
michael@0:   }
michael@0: 
michael@0:   // SimpleTiledContentClient doesn't support progressive updates or the low
michael@0:   // precision buffer yet.
michael@0:   MOZ_ASSERT(!gfxPrefs::UseProgressiveTilePainting() &&
michael@0:              !gfxPrefs::UseLowPrecisionBuffer());
michael@0: 
michael@0:   mValidRegion = mVisibleRegion;
michael@0: 
michael@0:   NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");
michael@0: 
michael@0:   mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
michael@0:                                            callback, data);
michael@0: 
michael@0:   ClientManager()->Hold(this);
michael@0: 
michael@0:   mContentClient->UseTiledLayerBuffer();
michael@0: }
michael@0: 
michael@0: 
michael@0: }
michael@0: }