void
ClientThebesLayer::RenderLayer()
{
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!mContentClient) {
mContentClient = ContentClient::CreateContentClient(ClientManager()->AsShadowForwarder());
if (!mContentClient) {
return;
}
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
mContentClient->BeginPaint();
PaintThebes();
mContentClient->EndPaint();
// It is very important that this is called after EndPaint, because destroying
// textures is a three stage process:
// 1. We are done with the buffer and move it to ContentClient::mOldTextures,
// that happens in DestroyBuffers which is may be called indirectly from
// PaintThebes.
// 2. The content client calls RemoveTextureClient on the texture clients in
// mOldTextures and forgets them. They then become invalid. The compositable
// client keeps a record of IDs. This happens in EndPaint.
// 3. An IPC message is sent to destroy the corresponding texture host. That
// happens from OnTransaction.
// It is important that these steps happen in order.
mContentClient->OnTransaction();
}
void
ClientCanvasLayer::RenderLayer()
{
PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!IsDirty()) {
return;
}
if (!mCanvasClient) {
TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
if (mNeedsYFlip) {
flags |= TextureFlags::NEEDS_Y_FLIP;
}
if (!mGLContext) {
// We don't support locking for buffer surfaces currently
flags |= TextureFlags::IMMEDIATE_UPLOAD;
} else {
// GLContext's SurfaceStream handles ownership itself,
// and doesn't require layers to do any deallocation.
flags |= TextureFlags::DEALLOCATE_CLIENT;
}
if (!mIsAlphaPremultiplied) {
flags |= TextureFlags::NON_PREMULTIPLIED;
}
mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
ClientManager()->AsShadowForwarder(),
flags);
if (!mCanvasClient) {
return;
}
if (HasShadow()) {
mCanvasClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
}
}
FirePreTransactionCallback();
mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
FireDidTransactionCallback();
ClientManager()->Hold(this);
mCanvasClient->Updated();
mCanvasClient->OnTransaction();
}
void
CanvasLayerD3D9::RenderLayer()
{
FirePreTransactionCallback();
UpdateSurface();
if (mD3DManager->CompositingDisabled()) {
return;
}
FireDidTransactionCallback();
if (!mTexture)
return;
/*
* We flip the Y axis here, note we can only do this because we are in
* CULL_NONE mode!
*/
ShaderConstantRect quad(0, 0, mBounds.width, mBounds.height);
const bool needsYFlip = (mOriginPos == gl::OriginPos::BottomLeft);
if (needsYFlip) {
quad.mHeight = (float)-mBounds.height;
quad.mY = (float)mBounds.height;
}
device()->SetVertexShaderConstantF(CBvLayerQuad, quad, 1);
SetShaderTransformAndOpacity();
if (mHasAlpha) {
mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER, GetMaskLayer());
} else {
mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBLAYER, GetMaskLayer());
}
if (mFilter == GraphicsFilter::FILTER_NEAREST) {
device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT);
device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT);
}
if (!mDataIsPremultiplied) {
device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, TRUE);
}
device()->SetTexture(0, mTexture);
device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
if (!mDataIsPremultiplied) {
device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, FALSE);
}
if (mFilter == GraphicsFilter::FILTER_NEAREST) {
device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
}
}
void
SimpleClientTiledThebesLayer::RenderLayer()
{
LayerManager::DrawThebesLayerCallback callback =
ClientManager()->GetThebesLayerCallback();
void *data = ClientManager()->GetThebesLayerCallbackData();
if (!callback) {
ClientManager()->SetTransactionIncomplete();
return;
}
// First time? Create a content client.
if (!mContentClient) {
mContentClient = new SimpleTiledContentClient(this, ClientManager());
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
// If the format changed, nothing is valid
if (mContentClient->mTiledBuffer.HasFormatChanged()) {
mValidRegion = nsIntRegion();
}
nsIntRegion invalidRegion = mVisibleRegion;
invalidRegion.Sub(invalidRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
return;
}
// Only paint the mask layer on the first transaction.
if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
// SimpleTiledContentClient doesn't support progressive updates or the low
// precision buffer yet.
MOZ_ASSERT(!gfxPrefs::UseProgressiveTilePainting() &&
!gfxPrefs::UseLowPrecisionBuffer());
mValidRegion = mVisibleRegion;
NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer();
}
void
ClientCanvasLayer::RenderLayer()
{
PROFILER_LABEL("ClientCanvasLayer", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!IsDirty()) {
return;
}
Painted();
if (!mCanvasClient) {
TextureFlags flags = TextureFlags::IMMEDIATE_UPLOAD;
if (mOriginPos == gl::OriginPos::BottomLeft) {
flags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
}
if (!mGLContext) {
// We don't support locking for buffer surfaces currently
flags |= TextureFlags::IMMEDIATE_UPLOAD;
}
if (!mIsAlphaPremultiplied) {
flags |= TextureFlags::NON_PREMULTIPLIED;
}
mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
ClientManager()->AsShadowForwarder(),
flags);
if (!mCanvasClient) {
return;
}
if (HasShadow()) {
mCanvasClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mCanvasClient, this);
}
}
FirePreTransactionCallback();
mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
FireDidTransactionCallback();
ClientManager()->Hold(this);
mCanvasClient->Updated();
mCanvasClient->OnTransaction();
}
void
ColorLayerComposite::RenderLayer(const nsIntPoint& aOffset,
const nsIntRect& aClipRect)
{
EffectChain effects;
gfxRGBA color(GetColor());
effects.mPrimaryEffect = new EffectSolidColor(gfx::Color(color.r,
color.g,
color.b,
color.a));
nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();
LayerManagerComposite::AddMaskEffect(GetMaskLayer(), effects);
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y,
aClipRect.width, aClipRect.height);
float opacity = GetEffectiveOpacity();
gfx::Matrix4x4 transform;
ToMatrix4x4(GetEffectiveTransform(), transform);
mCompositor->DrawQuad(rect, clipRect, effects, opacity,
transform, gfx::Point(aOffset.x, aOffset.y));
mCompositor->DrawDiagnostics(gfx::Color(0.0, 1.0, 1.0, 1.0),
rect, clipRect,
transform, gfx::Point(aOffset.x, aOffset.y));
}
void
BasicContainerLayer::ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
// We push groups for container layers if we need to, which always
// are aligned in device space, so it doesn't really matter how we snap
// containers.
gfxMatrix residual;
gfx3DMatrix idealTransform = GetLocalTransform()*aTransformToSurface;
idealTransform.ProjectTo2D();
if (!idealTransform.CanDraw2D()) {
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(gfx3DMatrix());
ComputeEffectiveTransformForMaskLayer(gfx3DMatrix());
mUseIntermediateSurface = true;
return;
}
mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
// We always pass the ideal matrix down to our children, so there is no
// need to apply any compensation using the residual from SnapTransformTranslation.
ComputeEffectiveTransformsForChildren(idealTransform);
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
/* If we have a single child, it can just inherit our opacity,
* otherwise we need a PushGroup and we need to mark ourselves as using
* an intermediate surface so our children don't inherit our opacity
* via GetEffectiveOpacity.
* Having a mask layer always forces our own push group
*/
mUseIntermediateSurface =
GetMaskLayer() || (GetEffectiveOpacity() != 1.0 &&
HasMultipleChildren());
}
void
ColorLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
EffectChain effects(this);
gfxRGBA color(GetColor());
effects.mPrimaryEffect = new EffectSolidColor(gfx::Color(color.r,
color.g,
color.b,
color.a));
nsIntRect boundRect = GetBounds();
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(GetMaskLayer(),
effects);
gfx::Rect rect(boundRect.x, boundRect.y,
boundRect.width, boundRect.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y,
aClipRect.width, aClipRect.height);
float opacity = GetEffectiveOpacity();
const gfx::Matrix4x4& transform = GetEffectiveTransform();
mCompositor->DrawQuad(rect, clipRect, effects, opacity, transform);
mCompositor->DrawDiagnostics(DIAGNOSTIC_COLOR,
rect, clipRect,
transform);
}
void
ContainerLayer::DefaultComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface)
{
Matrix residual;
Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
idealTransform.ProjectTo2D();
mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
bool useIntermediateSurface;
if (GetMaskLayer() ||
GetForceIsolatedGroup()) {
useIntermediateSurface = true;
#ifdef MOZ_DUMP_PAINTING
} else if (gfxUtils::sDumpPainting) {
useIntermediateSurface = true;
#endif
} else {
float opacity = GetEffectiveOpacity();
CompositionOp blendMode = GetEffectiveMixBlendMode();
if ((opacity != 1.0f || blendMode != CompositionOp::OP_OVER) && HasMultipleChildren()) {
useIntermediateSurface = true;
} else {
useIntermediateSurface = false;
gfx::Matrix contTransform;
if (!mEffectiveTransform.Is2D(&contTransform) ||
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
!contTransform.PreservesAxisAlignedRectangles()) {
#else
gfx::ThebesMatrix(contTransform).HasNonIntegerTranslation()) {
#endif
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
const nsIntRect *clipRect = child->GetEffectiveClipRect();
/* We can't (easily) forward our transform to children with a non-empty clip
* rect since it would need to be adjusted for the transform. See
* the calculations performed by CalculateScissorRect above.
* Nor for a child with a mask layer.
*/
if ((clipRect && !clipRect->IsEmpty() && !child->GetVisibleRegion().IsEmpty()) ||
child->GetMaskLayer()) {
useIntermediateSurface = true;
break;
}
}
}
}
}
mUseIntermediateSurface = useIntermediateSurface;
if (useIntermediateSurface) {
ComputeEffectiveTransformsForChildren(Matrix4x4::From2D(residual));
} else {
ComputeEffectiveTransformsForChildren(idealTransform);
}
if (idealTransform.CanDraw2D()) {
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
} else {
ComputeEffectiveTransformForMaskLayer(Matrix4x4());
}
}
void
ClientCanvasLayer::RenderLayer()
{
PROFILER_LABEL("ClientCanvasLayer", "Paint");
if (!IsDirty()) {
return;
}
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!mCanvasClient) {
TextureFlags flags = TEXTURE_IMMEDIATE_UPLOAD;
if (mNeedsYFlip) {
flags |= TEXTURE_NEEDS_Y_FLIP;
}
bool isCrossProcess = !(XRE_GetProcessType() == GeckoProcessType_Default);
//Append TEXTURE_DEALLOCATE_CLIENT flag for streaming buffer under OOPC case
if (isCrossProcess && mGLContext) {
GLScreenBuffer* screen = mGLContext->Screen();
if (screen && screen->Stream()) {
flags |= TEXTURE_DEALLOCATE_CLIENT;
}
}
mCanvasClient = CanvasClient::CreateCanvasClient(GetCanvasClientType(),
ClientManager(), flags);
if (!mCanvasClient) {
return;
}
if (HasShadow()) {
mCanvasClient->Connect();
ClientManager()->Attach(mCanvasClient, this);
}
}
FirePreTransactionCallback();
mCanvasClient->Update(gfx::IntSize(mBounds.width, mBounds.height), this);
FireDidTransactionCallback();
ClientManager()->Hold(this);
mCanvasClient->Updated();
mCanvasClient->OnTransaction();
}
void
ClientThebesLayer::RenderLayer()
{
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!mContentClient) {
mContentClient = ContentClient::CreateContentClient(ClientManager());
if (!mContentClient) {
return;
}
mContentClient->Connect();
ClientManager()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
mContentClient->BeginPaint();
PaintThebes();
mContentClient->EndPaint();
}
void
Layer::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml)
{
if (aDumpHtml) {
fprintf_stderr(aFile, "<li><a id=\"%p\" ", this);
#ifdef MOZ_DUMP_PAINTING
if (GetType() == TYPE_CONTAINER || GetType() == TYPE_THEBES) {
WriteSnapshotLinkToDumpFile(this, aFile);
}
#endif
fprintf_stderr(aFile, ">");
}
DumpSelf(aFile, aPrefix);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting && AsLayerComposite() && AsLayerComposite()->GetCompositableHost()) {
AsLayerComposite()->GetCompositableHost()->Dump(aFile, aPrefix, aDumpHtml);
}
#endif
if (aDumpHtml) {
fprintf_stderr(aFile, "</a>");
}
if (Layer* mask = GetMaskLayer()) {
fprintf_stderr(aFile, "%s Mask layer:\n", aPrefix);
nsAutoCString pfx(aPrefix);
pfx += " ";
mask->Dump(aFile, pfx.get(), aDumpHtml);
}
if (Layer* kid = GetFirstChild()) {
nsAutoCString pfx(aPrefix);
pfx += " ";
if (aDumpHtml) {
fprintf_stderr(aFile, "<ul>");
}
kid->Dump(aFile, pfx.get(), aDumpHtml);
if (aDumpHtml) {
fprintf_stderr(aFile, "</ul>");
}
}
if (aDumpHtml) {
fprintf_stderr(aFile, "</li>");
}
if (Layer* next = GetNextSibling())
next->Dump(aFile, aPrefix, aDumpHtml);
}
void
BasicContainerLayer::ComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface)
{
// We push groups for container layers if we need to, which always
// are aligned in device space, so it doesn't really matter how we snap
// containers.
Matrix residual;
Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
idealTransform.ProjectTo2D();
if (!idealTransform.CanDraw2D()) {
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(Matrix4x4());
ComputeEffectiveTransformForMaskLayer(Matrix4x4());
mUseIntermediateSurface = true;
return;
}
mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
// We always pass the ideal matrix down to our children, so there is no
// need to apply any compensation using the residual from SnapTransformTranslation.
ComputeEffectiveTransformsForChildren(idealTransform);
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
Layer* child = GetFirstChild();
bool hasSingleBlendingChild = false;
if (!HasMultipleChildren() && child) {
hasSingleBlendingChild = child->GetMixBlendMode() != CompositionOp::OP_OVER;
}
/* If we have a single childand it is not blending,, it can just inherit our opacity,
* otherwise we need a PushGroup and we need to mark ourselves as using
* an intermediate surface so our children don't inherit our opacity
* via GetEffectiveOpacity.
* Having a mask layer always forces our own push group
* Having a blend mode also always forces our own push group
*/
mUseIntermediateSurface =
GetMaskLayer() ||
GetForceIsolatedGroup() ||
(GetMixBlendMode() != CompositionOp::OP_OVER && HasMultipleChildren()) ||
(GetEffectiveOpacity() != 1.0 && (HasMultipleChildren() || hasSingleBlendingChild));
}
void
ContainerLayerD3D9::RenderLayer()
{
nsRefPtr<IDirect3DSurface9> previousRenderTarget;
nsRefPtr<IDirect3DTexture9> renderTexture;
float previousRenderTargetOffset[4];
float renderTargetOffset[] = { 0, 0, 0, 0 };
float oldViewMatrix[4][4];
RECT containerD3D9ClipRect;
device()->GetScissorRect(&containerD3D9ClipRect);
// Convert scissor to an nsIntRect. RECT's are exclusive on the bottom and
// right values.
nsIntRect oldScissor(containerD3D9ClipRect.left,
containerD3D9ClipRect.top,
containerD3D9ClipRect.right - containerD3D9ClipRect.left,
containerD3D9ClipRect.bottom - containerD3D9ClipRect.top);
ReadbackProcessor readback;
readback.BuildUpdates(this);
nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();
bool useIntermediate = UseIntermediateSurface();
mSupportsComponentAlphaChildren = false;
if (useIntermediate) {
nsRefPtr<IDirect3DSurface9> renderSurface;
if (!mD3DManager->CompositingDisabled()) {
device()->GetRenderTarget(0, getter_AddRefs(previousRenderTarget));
HRESULT hr = device()->CreateTexture(visibleRect.width, visibleRect.height, 1,
D3DUSAGE_RENDERTARGET, D3DFMT_A8R8G8B8,
D3DPOOL_DEFAULT, getter_AddRefs(renderTexture),
nullptr);
if (FAILED(hr)) {
ReportFailure(NS_LITERAL_CSTRING("ContainerLayerD3D9::ContainerRender(): Failed to create texture"),
hr);
return;
}
nsRefPtr<IDirect3DSurface9> renderSurface;
renderTexture->GetSurfaceLevel(0, getter_AddRefs(renderSurface));
device()->SetRenderTarget(0, renderSurface);
}
if (mVisibleRegion.GetNumRects() == 1 &&
(GetContentFlags() & CONTENT_OPAQUE)) {
// don't need a background, we're going to paint all opaque stuff
mSupportsComponentAlphaChildren = true;
} else {
Matrix4x4 transform3D = GetEffectiveTransform();
Matrix transform;
// If we have an opaque ancestor layer, then we can be sure that
// all the pixels we draw into are either opaque already or will be
// covered by something opaque. Otherwise copying up the background is
// not safe.
HRESULT hr = E_FAIL;
if (HasOpaqueAncestorLayer(this) &&
transform3D.Is2D(&transform) && !ThebesMatrix(transform).HasNonIntegerTranslation()) {
// Copy background up from below
RECT dest = { 0, 0, visibleRect.width, visibleRect.height };
RECT src = dest;
::OffsetRect(&src,
visibleRect.x + int32_t(transform._31),
visibleRect.y + int32_t(transform._32));
if (!mD3DManager->CompositingDisabled()) {
hr = device()->
StretchRect(previousRenderTarget, &src, renderSurface, &dest, D3DTEXF_NONE);
}
}
if (hr == S_OK) {
mSupportsComponentAlphaChildren = true;
} else if (!mD3DManager->CompositingDisabled()) {
device()->
Clear(0, 0, D3DCLEAR_TARGET, D3DCOLOR_RGBA(0, 0, 0, 0), 0, 0);
}
}
device()->
GetVertexShaderConstantF(CBvRenderTargetOffset, previousRenderTargetOffset, 1);
renderTargetOffset[0] = (float)visibleRect.x;
renderTargetOffset[1] = (float)visibleRect.y;
device()->
SetVertexShaderConstantF(CBvRenderTargetOffset, renderTargetOffset, 1);
gfx3DMatrix viewMatrix;
/*
* Matrix to transform to viewport space ( <-1.0, 1.0> topleft,
* <1.0, -1.0> bottomright)
*/
viewMatrix._11 = 2.0f / visibleRect.width;
viewMatrix._22 = -2.0f / visibleRect.height;
viewMatrix._41 = -1.0f;
viewMatrix._42 = 1.0f;
device()->
GetVertexShaderConstantF(CBmProjection, &oldViewMatrix[0][0], 4);
device()->
SetVertexShaderConstantF(CBmProjection, &viewMatrix._11, 4);
} else {
mSupportsComponentAlphaChildren =
(GetContentFlags() & CONTENT_OPAQUE) ||
(mParent &&
mParent->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
SortChildrenBy3DZOrder(children);
/*
* Render this container's contents.
*/
for (uint32_t i = 0; i < children.Length(); i++) {
LayerD3D9* layerToRender = static_cast<LayerD3D9*>(children.ElementAt(i)->ImplData());
if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
continue;
}
nsIntRect scissorRect =
RenderTargetPixel::ToUntyped(layerToRender->GetLayer()->CalculateScissorRect(RenderTargetPixel::FromUntyped(oldScissor), nullptr));
if (scissorRect.IsEmpty()) {
continue;
}
RECT d3drect;
d3drect.left = scissorRect.x;
d3drect.top = scissorRect.y;
d3drect.right = scissorRect.x + scissorRect.width;
d3drect.bottom = scissorRect.y + scissorRect.height;
device()->SetScissorRect(&d3drect);
if (layerToRender->GetLayer()->GetType() == TYPE_THEBES) {
static_cast<ThebesLayerD3D9*>(layerToRender)->RenderThebesLayer(&readback);
} else {
layerToRender->RenderLayer();
}
}
if (useIntermediate && !mD3DManager->CompositingDisabled()) {
device()->SetRenderTarget(0, previousRenderTarget);
device()->SetVertexShaderConstantF(CBvRenderTargetOffset, previousRenderTargetOffset, 1);
device()->SetVertexShaderConstantF(CBmProjection, &oldViewMatrix[0][0], 4);
device()->SetVertexShaderConstantF(CBvLayerQuad,
ShaderConstantRect(visibleRect.x,
visibleRect.y,
visibleRect.width,
visibleRect.height),
1);
SetShaderTransformAndOpacity();
mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER,
GetMaskLayer(),
GetTransform().CanDraw2D());
device()->SetTexture(0, renderTexture);
device()->SetScissorRect(&containerD3D9ClipRect);
device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
} else {
device()->SetScissorRect(&containerD3D9ClipRect);
}
}
void
SimpleClientTiledThebesLayer::RenderLayer()
{
LayerManager::DrawThebesLayerCallback callback =
ClientManager()->GetThebesLayerCallback();
void *data = ClientManager()->GetThebesLayerCallbackData();
if (!callback) {
ClientManager()->SetTransactionIncomplete();
return;
}
// First time? Create a content client.
if (!mContentClient) {
mContentClient = new SimpleTiledContentClient(this, ClientManager());
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
// If the format changed, nothing is valid
if (mContentClient->mTiledBuffer.HasFormatChanged()) {
mValidRegion = nsIntRegion();
}
nsIntRegion invalidRegion = mVisibleRegion;
invalidRegion.Sub(invalidRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
const FrameMetrics& parentMetrics = GetParent()->GetFrameMetrics();
nsIntRegion wantToPaintRegion = mVisibleRegion;
// Only paint the mask layer on the first transaction.
if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
// Fast path for no progressive updates, no low-precision updates and no
// critical display-port set, or no display-port set.
if (parentMetrics.mCriticalDisplayPort.IsEmpty() ||
parentMetrics.mDisplayPort.IsEmpty())
{
mValidRegion = wantToPaintRegion;
NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer();
return;
}
// Calculate everything we need to perform the paint.
BeginPaint();
if (mPaintData.mPaintFinished) {
return;
}
// Make sure that tiles that fall outside of the visible region are
// discarded on the first update.
if (!ClientManager()->IsRepeatTransaction()) {
mValidRegion.And(mValidRegion, wantToPaintRegion);
if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
// Make sure that tiles that fall outside of the critical displayport are
// discarded on the first update.
mValidRegion.And(mValidRegion, mPaintData.mLayoutCriticalDisplayPort);
}
}
nsIntRegion lowPrecisionInvalidRegion;
if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
// Clip the invalid region to the critical display-port
invalidRegion.And(invalidRegion, mPaintData.mLayoutCriticalDisplayPort);
if (invalidRegion.IsEmpty() && lowPrecisionInvalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
}
if (!invalidRegion.IsEmpty()) {
mValidRegion = wantToPaintRegion;
if (!mPaintData.mLayoutCriticalDisplayPort.IsEmpty()) {
mValidRegion.And(mValidRegion, mPaintData.mLayoutCriticalDisplayPort);
}
mContentClient->mTiledBuffer.SetFrameResolution(mPaintData.mResolution);
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer();
EndPaint(false);
return;
}
EndPaint(false);
}
void
ClientTiledThebesLayer::RenderLayer()
{
LayerManager::DrawThebesLayerCallback callback =
ClientManager()->GetThebesLayerCallback();
void *data = ClientManager()->GetThebesLayerCallbackData();
if (!callback) {
ClientManager()->SetTransactionIncomplete();
return;
}
if (!mContentClient) {
mContentClient = new TiledContentClient(this, ClientManager());
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
if (mContentClient->mTiledBuffer.HasFormatChanged()) {
mValidRegion = nsIntRegion();
}
TILING_PRLOG_OBJ(("TILING 0x%p: Initial visible region %s\n", this, tmpstr.get()), mVisibleRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Initial valid region %s\n", this, tmpstr.get()), mValidRegion);
nsIntRegion invalidRegion = mVisibleRegion;
invalidRegion.Sub(invalidRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
// Only paint the mask layer on the first transaction.
if (GetMaskLayer() && !ClientManager()->IsRepeatTransaction()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
bool isFixed = GetIsFixedPosition() || GetParent()->GetIsFixedPosition();
// Fast path for no progressive updates, no low-precision updates and no
// critical display-port set, or no display-port set, or this is a fixed
// position layer/contained in a fixed position layer
const FrameMetrics& parentMetrics = GetParent()->GetFrameMetrics();
if ((!gfxPrefs::UseProgressiveTilePainting() &&
!gfxPrefs::UseLowPrecisionBuffer() &&
parentMetrics.mCriticalDisplayPort.IsEmpty()) ||
parentMetrics.mDisplayPort.IsEmpty() ||
isFixed) {
mValidRegion = mVisibleRegion;
NS_ASSERTION(!ClientManager()->IsRepeatTransaction(), "Didn't paint our mask layer");
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
return;
}
// Calculate everything we need to perform the paint.
BeginPaint();
if (mPaintData.mPaintFinished) {
return;
}
TILING_PRLOG_OBJ(("TILING 0x%p: Valid region %s\n", this, tmpstr.get()), mValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Visible region %s\n", this, tmpstr.get()), mVisibleRegion);
// Make sure that tiles that fall outside of the visible region are
// discarded on the first update.
if (!ClientManager()->IsRepeatTransaction()) {
mValidRegion.And(mValidRegion, mVisibleRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
// Make sure that tiles that fall outside of the critical displayport are
// discarded on the first update.
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
}
nsIntRegion lowPrecisionInvalidRegion;
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
if (gfxPrefs::UseLowPrecisionBuffer()) {
// Calculate the invalid region for the low precision buffer
lowPrecisionInvalidRegion.Sub(mVisibleRegion, mLowPrecisionValidRegion);
// Remove the valid region from the low precision valid region (we don't
// validate this part of the low precision buffer).
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
}
// Clip the invalid region to the critical display-port
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
if (invalidRegion.IsEmpty() && lowPrecisionInvalidRegion.IsEmpty()) {
EndPaint(true);
return;
}
}
TILING_PRLOG_OBJ(("TILING 0x%p: Invalid region %s\n", this, tmpstr.get()), invalidRegion);
if (!invalidRegion.IsEmpty() && mPaintData.mLowPrecisionPaintCount == 0) {
bool updatedBuffer = false;
// Only draw progressively when the resolution is unchanged.
if (gfxPrefs::UseProgressiveTilePainting() &&
!ClientManager()->HasShadowTarget() &&
mContentClient->mTiledBuffer.GetFrameResolution() == mPaintData.mResolution) {
// Store the old valid region, then clear it before painting.
// We clip the old valid region to the visible region, as it only gets
// used to decide stale content (currently valid and previously visible)
nsIntRegion oldValidRegion = mContentClient->mTiledBuffer.GetValidRegion();
oldValidRegion.And(oldValidRegion, mVisibleRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
oldValidRegion.And(oldValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_PRLOG_OBJ(("TILING 0x%p: Progressive update with old valid region %s\n", this, tmpstr.get()), oldValidRegion);
updatedBuffer =
mContentClient->mTiledBuffer.ProgressiveUpdate(mValidRegion, invalidRegion,
oldValidRegion, &mPaintData,
callback, data);
} else {
updatedBuffer = true;
mValidRegion = mVisibleRegion;
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_PRLOG_OBJ(("TILING 0x%p: Painting: valid region %s\n", this, tmpstr.get()), mValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: and invalid region %s\n", this, tmpstr.get()), invalidRegion);
mContentClient->mTiledBuffer.SetFrameResolution(mPaintData.mResolution);
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion,
callback, data);
}
if (updatedBuffer) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
// If there are low precision updates, mark the paint as unfinished and
// request a repeat transaction.
if (!lowPrecisionInvalidRegion.IsEmpty() && mPaintData.mPaintFinished) {
ClientManager()->SetRepeatTransaction();
mPaintData.mLowPrecisionPaintCount = 1;
mPaintData.mPaintFinished = false;
}
// Return so that low precision updates aren't performed in the same
// transaction as high-precision updates.
EndPaint(false);
return;
}
}
TILING_PRLOG_OBJ(("TILING 0x%p: Low-precision valid region is %s\n", this, tmpstr.get()), mLowPrecisionValidRegion);
TILING_PRLOG_OBJ(("TILING 0x%p: Low-precision invalid region is %s\n", this, tmpstr.get()), lowPrecisionInvalidRegion);
// Render the low precision buffer, if there's area to invalidate and the
// visible region is larger than the critical display port.
bool updatedLowPrecision = false;
if (!lowPrecisionInvalidRegion.IsEmpty() &&
!nsIntRegion(LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort)).Contains(mVisibleRegion)) {
nsIntRegion oldValidRegion =
mContentClient->mLowPrecisionTiledBuffer.GetValidRegion();
oldValidRegion.And(oldValidRegion, mVisibleRegion);
// If the frame resolution or format have changed, invalidate the buffer
if (mContentClient->mLowPrecisionTiledBuffer.GetFrameResolution() != mPaintData.mResolution ||
mContentClient->mLowPrecisionTiledBuffer.HasFormatChanged()) {
if (!mLowPrecisionValidRegion.IsEmpty()) {
updatedLowPrecision = true;
}
oldValidRegion.SetEmpty();
mLowPrecisionValidRegion.SetEmpty();
mContentClient->mLowPrecisionTiledBuffer.SetFrameResolution(mPaintData.mResolution);
lowPrecisionInvalidRegion = mVisibleRegion;
}
// Invalidate previously valid content that is no longer visible
if (mPaintData.mLowPrecisionPaintCount == 1) {
mLowPrecisionValidRegion.And(mLowPrecisionValidRegion, mVisibleRegion);
}
mPaintData.mLowPrecisionPaintCount++;
// Remove the valid high-precision region from the invalid low-precision
// region. We don't want to spend time drawing things twice.
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
if (!lowPrecisionInvalidRegion.IsEmpty()) {
updatedLowPrecision = mContentClient->mLowPrecisionTiledBuffer
.ProgressiveUpdate(mLowPrecisionValidRegion,
lowPrecisionInvalidRegion,
oldValidRegion, &mPaintData,
callback, data);
}
} else if (!mLowPrecisionValidRegion.IsEmpty()) {
// Clear the low precision tiled buffer
updatedLowPrecision = true;
mLowPrecisionValidRegion.SetEmpty();
mContentClient->mLowPrecisionTiledBuffer.ResetPaintedAndValidState();
}
// We send a Painted callback if we clear the valid region of the low
// precision buffer, so that the shadow buffer's valid region can be updated
// and the associated resources can be freed.
if (updatedLowPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::LOW_PRECISION_TILED_BUFFER);
}
EndPaint(false);
}
void
ClientTiledPaintedLayer::RenderLayer()
{
LayerManager::DrawPaintedLayerCallback callback =
ClientManager()->GetPaintedLayerCallback();
void *data = ClientManager()->GetPaintedLayerCallbackData();
if (!callback) {
ClientManager()->SetTransactionIncomplete();
return;
}
if (!mContentClient) {
mContentClient = new TiledContentClient(this, ClientManager());
mContentClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mContentClient, this);
MOZ_ASSERT(mContentClient->GetForwarder());
}
if (mContentClient->mTiledBuffer.HasFormatChanged()) {
mValidRegion = nsIntRegion();
mContentClient->mTiledBuffer.ResetPaintedAndValidState();
}
TILING_LOG("TILING %p: Initial visible region %s\n", this, Stringify(mVisibleRegion).c_str());
TILING_LOG("TILING %p: Initial valid region %s\n", this, Stringify(mValidRegion).c_str());
TILING_LOG("TILING %p: Initial low-precision valid region %s\n", this, Stringify(mLowPrecisionValidRegion).c_str());
nsIntRegion neededRegion = mVisibleRegion;
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
// This is handled by PadDrawTargetOutFromRegion in TiledContentClient for mobile
if (MayResample()) {
// If we're resampling then bilinear filtering can read up to 1 pixel
// outside of our texture coords. Make the visible region a single rect,
// and pad it out by 1 pixel (restricted to tile boundaries) so that
// we always have valid content or transparent pixels to sample from.
nsIntRect bounds = neededRegion.GetBounds();
nsIntRect wholeTiles = bounds;
wholeTiles.Inflate(nsIntSize(
gfxPlatform::GetPlatform()->GetTileWidth(),
gfxPlatform::GetPlatform()->GetTileHeight()));
nsIntRect padded = bounds;
padded.Inflate(1);
padded.IntersectRect(padded, wholeTiles);
neededRegion = padded;
}
#endif
nsIntRegion invalidRegion;
invalidRegion.Sub(neededRegion, mValidRegion);
if (invalidRegion.IsEmpty()) {
EndPaint();
return;
}
if (!ClientManager()->IsRepeatTransaction()) {
// Only paint the mask layer on the first transaction.
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
// In some cases we can take a fast path and just be done with it.
if (UseFastPath()) {
TILING_LOG("TILING %p: Taking fast-path\n", this);
mValidRegion = neededRegion;
mContentClient->mTiledBuffer.PaintThebes(mValidRegion, invalidRegion, callback, data);
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
return;
}
// For more complex cases we need to calculate a bunch of metrics before we
// can do the paint.
BeginPaint();
if (mPaintData.mPaintFinished) {
return;
}
// Make sure that tiles that fall outside of the visible region or outside of the
// critical displayport are discarded on the first update. Also make sure that we
// only draw stuff inside the critical displayport on the first update.
mValidRegion.And(mValidRegion, neededRegion);
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
mValidRegion.And(mValidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_LOG("TILING %p: First-transaction valid region %s\n", this, Stringify(mValidRegion).c_str());
TILING_LOG("TILING %p: First-transaction invalid region %s\n", this, Stringify(invalidRegion).c_str());
} else {
if (!mPaintData.mCriticalDisplayPort.IsEmpty()) {
invalidRegion.And(invalidRegion, LayerIntRect::ToUntyped(mPaintData.mCriticalDisplayPort));
}
TILING_LOG("TILING %p: Repeat-transaction invalid region %s\n", this, Stringify(invalidRegion).c_str());
}
nsIntRegion lowPrecisionInvalidRegion;
if (gfxPrefs::UseLowPrecisionBuffer()) {
// Calculate the invalid region for the low precision buffer. Make sure
// to remove the valid high-precision area so we don't double-paint it.
lowPrecisionInvalidRegion.Sub(neededRegion, mLowPrecisionValidRegion);
lowPrecisionInvalidRegion.Sub(lowPrecisionInvalidRegion, mValidRegion);
}
TILING_LOG("TILING %p: Low-precision invalid region %s\n", this, Stringify(lowPrecisionInvalidRegion).c_str());
bool updatedHighPrecision = RenderHighPrecision(invalidRegion,
neededRegion,
callback, data);
if (updatedHighPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::TILED_BUFFER);
if (!mPaintData.mPaintFinished) {
// There is still more high-res stuff to paint, so we're not
// done yet. A subsequent transaction will take care of this.
ClientManager()->SetRepeatTransaction();
return;
}
}
// If there is nothing to draw in low-precision, then we're done.
if (lowPrecisionInvalidRegion.IsEmpty()) {
EndPaint();
return;
}
if (updatedHighPrecision) {
// If there are low precision updates, but we just did some high-precision
// updates, then mark the paint as unfinished and request a repeat transaction.
// This is so that we don't perform low-precision updates in the same transaction
// as high-precision updates.
TILING_LOG("TILING %p: Scheduling repeat transaction for low-precision painting\n", this);
ClientManager()->SetRepeatTransaction();
mPaintData.mLowPrecisionPaintCount = 1;
mPaintData.mPaintFinished = false;
return;
}
bool updatedLowPrecision = RenderLowPrecision(lowPrecisionInvalidRegion,
neededRegion,
callback, data);
if (updatedLowPrecision) {
ClientManager()->Hold(this);
mContentClient->UseTiledLayerBuffer(TiledContentClient::LOW_PRECISION_TILED_BUFFER);
if (!mPaintData.mPaintFinished) {
// There is still more low-res stuff to paint, so we're not
// done yet. A subsequent transaction will take care of this.
ClientManager()->SetRepeatTransaction();
return;
}
}
// If we get here, we've done all the high- and low-precision
// paints we wanted to do, so we can finish the paint and chill.
EndPaint();
}
void
BasicContainerLayer::ComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface)
{
// We push groups for container layers if we need to, which always
// are aligned in device space, so it doesn't really matter how we snap
// containers.
Matrix residual;
Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
if (!Extend3DContext() && !Is3DContextLeaf()) {
// For 3D transform leaked from extended parent layer.
idealTransform.ProjectTo2D();
}
if (!idealTransform.CanDraw2D()) {
if (!Extend3DContext() ||
(!idealTransform.Is2D() && Creates3DContextWithExtendingChildren())) {
if (!Creates3DContextWithExtendingChildren()) {
idealTransform.ProjectTo2D();
}
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(Matrix4x4());
ComputeEffectiveTransformForMaskLayers(Matrix4x4());
mUseIntermediateSurface = true;
return;
}
mEffectiveTransform = idealTransform;
ComputeEffectiveTransformsForChildren(idealTransform);
ComputeEffectiveTransformForMaskLayers(idealTransform);
mUseIntermediateSurface = false;
return;
}
// With 2D transform or extended 3D context.
Layer* child = GetFirstChild();
bool hasSingleBlendingChild = false;
if (!HasMultipleChildren() && child) {
hasSingleBlendingChild = child->GetMixBlendMode() != CompositionOp::OP_OVER;
}
/* If we have a single childand it is not blending,, it can just inherit our opacity,
* otherwise we need a PushGroup and we need to mark ourselves as using
* an intermediate surface so our children don't inherit our opacity
* via GetEffectiveOpacity.
* Having a mask layer always forces our own push group
* Having a blend mode also always forces our own push group
*/
mUseIntermediateSurface =
GetMaskLayer() ||
GetForceIsolatedGroup() ||
(GetMixBlendMode() != CompositionOp::OP_OVER && HasMultipleChildren()) ||
(GetEffectiveOpacity() != 1.0 && (HasMultipleChildren() || hasSingleBlendingChild));
if (!Extend3DContext()) {
idealTransform.ProjectTo2D();
}
mEffectiveTransform =
!mUseIntermediateSurface ?
idealTransform : SnapTransformTranslation(idealTransform, &residual);
Matrix4x4 childTransformToSurface =
(!mUseIntermediateSurface ||
(mUseIntermediateSurface && !Extend3DContext() /* 2D */)) ?
idealTransform : Matrix4x4::From2D(residual);
ComputeEffectiveTransformsForChildren(childTransformToSurface);
ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
}
void
ContainerLayerOGL::RenderLayer(int aPreviousFrameBuffer,
const nsIntPoint& aOffset)
{
/**
* Setup our temporary texture for rendering the contents of this container.
*/
GLuint containerSurface;
GLuint frameBuffer;
nsIntPoint childOffset(aOffset);
nsIntRect visibleRect = GetEffectiveVisibleRegion().GetBounds();
nsIntRect cachedScissor = gl()->ScissorRect();
gl()->PushScissorRect();
mSupportsComponentAlphaChildren = false;
float opacity = GetEffectiveOpacity();
const gfx3DMatrix& transform = GetEffectiveTransform();
bool needsFramebuffer = UseIntermediateSurface();
if (needsFramebuffer) {
nsIntRect framebufferRect = visibleRect;
// we're about to create a framebuffer backed by textures to use as an intermediate
// surface. What to do if its size (as given by framebufferRect) would exceed the
// maximum texture size supported by the GL? The present code chooses the compromise
// of just clamping the framebuffer's size to the max supported size.
// This gives us a lower resolution rendering of the intermediate surface (children layers).
// See bug 827170 for a discussion.
GLint maxTexSize;
gl()->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &maxTexSize);
framebufferRect.width = std::min(framebufferRect.width, maxTexSize);
framebufferRect.height = std::min(framebufferRect.height, maxTexSize);
LayerManagerOGL::InitMode mode = LayerManagerOGL::InitModeClear;
if (GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(GetContentFlags() & Layer::CONTENT_OPAQUE))
{
// don't need a background, we're going to paint all opaque stuff
mSupportsComponentAlphaChildren = true;
mode = LayerManagerOGL::InitModeNone;
} else {
const gfx3DMatrix& transform3D = GetEffectiveTransform();
gfxMatrix transform;
// If we have an opaque ancestor layer, then we can be sure that
// all the pixels we draw into are either opaque already or will be
// covered by something opaque. Otherwise copying up the background is
// not safe.
if (HasOpaqueAncestorLayer(this) &&
transform3D.Is2D(&transform) && !transform.HasNonIntegerTranslation()) {
mode = gfxPlatform::ComponentAlphaEnabled() ?
LayerManagerOGL::InitModeCopy :
LayerManagerOGL::InitModeClear;
framebufferRect.x += transform.x0;
framebufferRect.y += transform.y0;
mSupportsComponentAlphaChildren = gfxPlatform::ComponentAlphaEnabled();
}
}
gl()->PushViewportRect();
framebufferRect -= childOffset;
if (!mOGLManager->CompositingDisabled()) {
if (!mOGLManager->CreateFBOWithTexture(framebufferRect,
mode,
aPreviousFrameBuffer,
&frameBuffer,
&containerSurface)) {
gl()->PopViewportRect();
gl()->PopScissorRect();
gl()->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aPreviousFrameBuffer);
return;
}
}
childOffset.x = visibleRect.x;
childOffset.y = visibleRect.y;
} else {
frameBuffer = aPreviousFrameBuffer;
mSupportsComponentAlphaChildren = (GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(GetParent() && GetParent()->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
SortChildrenBy3DZOrder(children);
/**
* Render this container's contents.
*/
for (uint32_t i = 0; i < children.Length(); i++) {
LayerOGL* layerToRender = static_cast<LayerOGL*>(children.ElementAt(i)->ImplData());
if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
continue;
}
nsIntRect scissorRect = layerToRender->GetLayer()->
CalculateScissorRect(cachedScissor, &mOGLManager->GetWorldTransform());
if (scissorRect.IsEmpty()) {
continue;
}
gl()->fScissor(scissorRect.x,
scissorRect.y,
scissorRect.width,
scissorRect.height);
layerToRender->RenderLayer(frameBuffer, childOffset);
gl()->MakeCurrent();
}
if (needsFramebuffer) {
// Unbind the current framebuffer and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf =
gl()->GetTexImage(containerSurface, true, mOGLManager->GetFBOTextureFormat());
WriteSnapshotToDumpFile(this, surf);
}
#endif
// Restore the viewport
gl()->PopViewportRect();
nsIntRect viewport = gl()->ViewportRect();
mOGLManager->SetupPipeline(viewport.width, viewport.height,
LayerManagerOGL::ApplyWorldTransform);
gl()->PopScissorRect();
if (!mOGLManager->CompositingDisabled()) {
gl()->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aPreviousFrameBuffer);
gl()->fDeleteFramebuffers(1, &frameBuffer);
gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
gl()->fBindTexture(mOGLManager->FBOTextureTarget(), containerSurface);
MaskType maskType = MaskNone;
if (GetMaskLayer()) {
if (!GetTransform().CanDraw2D()) {
maskType = Mask3d;
} else {
maskType = Mask2d;
}
}
ShaderProgramOGL *rgb =
mOGLManager->GetFBOLayerProgram(maskType);
rgb->Activate();
rgb->SetLayerQuadRect(visibleRect);
rgb->SetLayerTransform(transform);
rgb->SetTextureTransform(gfx3DMatrix());
rgb->SetLayerOpacity(opacity);
rgb->SetRenderOffset(aOffset);
rgb->SetTextureUnit(0);
rgb->LoadMask(GetMaskLayer());
if (rgb->GetTexCoordMultiplierUniformLocation() != -1) {
// 2DRect case, get the multiplier right for a sampler2DRect
rgb->SetTexCoordMultiplier(visibleRect.width, visibleRect.height);
}
// Drawing is always flipped, but when copying between surfaces we want to avoid
// this. Pass true for the flip parameter to introduce a second flip
// that cancels the other one out.
mOGLManager->BindAndDrawQuad(rgb, true);
// Clean up resources. This also unbinds the texture.
gl()->fDeleteTextures(1, &containerSurface);
}
} else {
gl()->PopScissorRect();
}
}
virtual void RenderLayer()
{
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
}