void
ThebesLayerComposite::RenderLayer(const nsIntPoint& aOffset,
const nsIntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
gfx::Matrix4x4 transform;
ToMatrix4x4(GetEffectiveTransform(), transform);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf = mBuffer->GetAsSurface();
WriteSnapshotToDumpFile(this, surf);
}
#endif
EffectChain effectChain;
LayerManagerComposite::AddMaskEffect(mMaskLayer, effectChain);
nsIntRegion visibleRegion = GetEffectiveVisibleRegion();
TiledLayerProperties tiledLayerProps;
if (mRequiresTiledProperties) {
// calculating these things can be a little expensive, so don't
// do them if we don't have to
tiledLayerProps.mVisibleRegion = visibleRegion;
tiledLayerProps.mDisplayPort = GetDisplayPort();
tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
tiledLayerProps.mCompositionBounds = GetCompositionBounds();
tiledLayerProps.mRetainTiles = !mIsFixedPosition;
tiledLayerProps.mValidRegion = mValidRegion;
}
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(effectChain,
GetEffectiveOpacity(),
transform,
gfx::Point(aOffset.x, aOffset.y),
gfx::FILTER_LINEAR,
clipRect,
&visibleRegion,
mRequiresTiledProperties ? &tiledLayerProps
: nullptr);
if (mRequiresTiledProperties) {
mValidRegion = tiledLayerProps.mValidRegion;
}
LayerManagerComposite::RemoveMaskEffect(mMaskLayer);
mCompositeManager->GetCompositor()->MakeCurrent();
}
void
ImageLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
if (!mImageHost || !mImageHost->IsAttached()) {
return;
}
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf = mImageHost->GetAsSurface();
WriteSnapshotToDumpFile(this, surf);
}
#endif
mCompositor->MakeCurrent();
EffectChain effectChain;
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
gfx::Matrix4x4 transform;
ToMatrix4x4(GetEffectiveTransform(), transform);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
mImageHost->SetCompositor(mCompositor);
mImageHost->Composite(effectChain,
GetEffectiveOpacity(),
transform,
gfx::ToFilter(mFilter),
clipRect);
}
void
ImageLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
if (!mImageHost || !mImageHost->IsAttached()) {
return;
}
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> dSurf = mImageHost->GetAsSurface();
gfxPlatform *platform = gfxPlatform::GetPlatform();
RefPtr<gfx::DrawTarget> dt = platform->CreateDrawTargetForData(dSurf->GetData(),
dSurf->GetSize(),
dSurf->Stride(),
dSurf->GetFormat());
nsRefPtr<gfxASurface> surf = platform->GetThebesSurfaceForDrawTarget(dt);
WriteSnapshotToDumpFile(this, surf);
}
#endif
mCompositor->MakeCurrent();
EffectChain effectChain;
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
gfx::Matrix4x4 transform;
ToMatrix4x4(GetEffectiveTransform(), transform);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
mImageHost->SetCompositor(mCompositor);
mImageHost->Composite(effectChain,
GetEffectiveOpacity(),
transform,
gfx::ToFilter(mFilter),
clipRect);
}
void
ThebesLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
PROFILER_LABEL("ThebesLayerComposite", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
if (surf) {
WriteSnapshotToDumpFile(this, surf);
}
}
#endif
EffectChain effectChain(this);
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
AddBlendModeEffect(effectChain);
const nsIntRegion& visibleRegion = GetEffectiveVisibleRegion();
TiledLayerProperties tiledLayerProps;
if (mRequiresTiledProperties) {
tiledLayerProps.mVisibleRegion = visibleRegion;
tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
tiledLayerProps.mValidRegion = mValidRegion;
}
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(effectChain,
GetEffectiveOpacity(),
GetEffectiveTransform(),
gfx::Filter::LINEAR,
clipRect,
&visibleRegion,
mRequiresTiledProperties ? &tiledLayerProps
: nullptr);
mBuffer->BumpFlashCounter();
if (mRequiresTiledProperties) {
mValidRegion = tiledLayerProps.mValidRegion;
}
mCompositeManager->GetCompositor()->MakeCurrent();
}
void
PaintedLayerComposite::RenderLayer(const gfx::IntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
PROFILER_LABEL("PaintedLayerComposite", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
Compositor* compositor = mCompositeManager->GetCompositor();
MOZ_ASSERT(mBuffer->GetCompositor() == compositor &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
const nsIntRegion& visibleRegion = GetEffectiveVisibleRegion();
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
if (surf) {
WriteSnapshotToDumpFile(this, surf);
}
}
#endif
RenderWithAllMasks(this, compositor, aClipRect,
[&](EffectChain& effectChain, const Rect& clipRect) {
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(this, effectChain,
GetEffectiveOpacity(),
GetEffectiveTransform(),
GetEffectFilter(),
clipRect,
&visibleRegion);
});
mBuffer->BumpFlashCounter();
compositor->MakeCurrent();
}
static void
ContainerRender(Container* aContainer,
int aPreviousFrameBuffer,
const nsIntPoint& aOffset,
LayerManagerOGL* aManager)
{
/**
* Setup our temporary texture for rendering the contents of this container.
*/
GLuint containerSurface;
GLuint frameBuffer;
nsIntPoint childOffset(aOffset);
nsIntRect visibleRect = aContainer->GetEffectiveVisibleRegion().GetBounds();
nsIntRect cachedScissor = aContainer->gl()->ScissorRect();
aContainer->gl()->PushScissorRect();
aContainer->mSupportsComponentAlphaChildren = false;
float opacity = aContainer->GetEffectiveOpacity();
const gfx3DMatrix& transform = aContainer->GetEffectiveTransform();
bool needsFramebuffer = aContainer->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;
aContainer->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 (aContainer->GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE))
{
// don't need a background, we're going to paint all opaque stuff
aContainer->mSupportsComponentAlphaChildren = true;
mode = LayerManagerOGL::InitModeNone;
} else {
const gfx3DMatrix& transform3D = aContainer->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(aContainer) &&
transform3D.Is2D(&transform) && !transform.HasNonIntegerTranslation()) {
mode = gfxPlatform::GetPlatform()->UsesSubpixelAATextRendering() ?
LayerManagerOGL::InitModeCopy :
LayerManagerOGL::InitModeClear;
framebufferRect.x += transform.x0;
framebufferRect.y += transform.y0;
aContainer->mSupportsComponentAlphaChildren = gfxPlatform::GetPlatform()->UsesSubpixelAATextRendering();
}
}
aContainer->gl()->PushViewportRect();
framebufferRect -= childOffset;
if (!aManager->CompositingDisabled()) {
aManager->CreateFBOWithTexture(framebufferRect,
mode,
aPreviousFrameBuffer,
&frameBuffer,
&containerSurface);
}
childOffset.x = visibleRect.x;
childOffset.y = visibleRect.y;
} else {
frameBuffer = aPreviousFrameBuffer;
aContainer->mSupportsComponentAlphaChildren = (aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(aContainer->GetParent() && aContainer->GetParent()->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
aContainer->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, &aManager->GetWorldTransform());
if (scissorRect.IsEmpty()) {
continue;
}
aContainer->gl()->fScissor(scissorRect.x,
scissorRect.y,
scissorRect.width,
scissorRect.height);
layerToRender->RenderLayer(frameBuffer, childOffset);
aContainer->gl()->MakeCurrent();
}
if (needsFramebuffer) {
// Unbind the current framebuffer and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf =
aContainer->gl()->GetTexImage(containerSurface, true, aManager->GetFBOLayerProgramType());
WriteSnapshotToDumpFile(aContainer, surf);
}
#endif
// Restore the viewport
aContainer->gl()->PopViewportRect();
nsIntRect viewport = aContainer->gl()->ViewportRect();
aManager->SetupPipeline(viewport.width, viewport.height,
LayerManagerOGL::ApplyWorldTransform);
aContainer->gl()->PopScissorRect();
aContainer->gl()->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aPreviousFrameBuffer);
if (!aManager->CompositingDisabled()) {
aContainer->gl()->fDeleteFramebuffers(1, &frameBuffer);
aContainer->gl()->fActiveTexture(LOCAL_GL_TEXTURE0);
aContainer->gl()->fBindTexture(aManager->FBOTextureTarget(), containerSurface);
MaskType maskType = MaskNone;
if (aContainer->GetMaskLayer()) {
if (!aContainer->GetTransform().CanDraw2D()) {
maskType = Mask3d;
} else {
maskType = Mask2d;
}
}
ShaderProgramOGL *rgb =
aManager->GetFBOLayerProgram(maskType);
rgb->Activate();
rgb->SetLayerQuadRect(visibleRect);
rgb->SetLayerTransform(transform);
rgb->SetLayerOpacity(opacity);
rgb->SetRenderOffset(aOffset);
rgb->SetTextureUnit(0);
rgb->LoadMask(aContainer->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.
aManager->BindAndDrawQuad(rgb, true);
// Clean up resources. This also unbinds the texture.
aContainer->gl()->fDeleteTextures(1, &containerSurface);
}
} else {
aContainer->gl()->PopScissorRect();
}
}
template<class ContainerT> void
ContainerRender(ContainerT* aContainer,
const nsIntPoint& aOffset,
LayerManagerComposite* aManager,
const nsIntRect& aClipRect)
{
/**
* Setup our temporary surface for rendering the contents of this container.
*/
RefPtr<CompositingRenderTarget> surface;
Compositor* compositor = aManager->GetCompositor();
RefPtr<CompositingRenderTarget> previousTarget = compositor->GetCurrentRenderTarget();
nsIntPoint childOffset(aOffset);
nsIntRect visibleRect = aContainer->GetEffectiveVisibleRegion().GetBounds();
aContainer->mSupportsComponentAlphaChildren = false;
float opacity = aContainer->GetEffectiveOpacity();
bool needsSurface = aContainer->UseIntermediateSurface();
if (needsSurface) {
SurfaceInitMode mode = INIT_MODE_CLEAR;
bool surfaceCopyNeeded = false;
gfx::IntRect surfaceRect = gfx::IntRect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
// 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.
int32_t maxTextureSize = compositor->GetMaxTextureSize();
surfaceRect.width = std::min(maxTextureSize, surfaceRect.width);
surfaceRect.height = std::min(maxTextureSize, surfaceRect.height);
if (aContainer->GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE))
{
// don't need a background, we're going to paint all opaque stuff
aContainer->mSupportsComponentAlphaChildren = true;
mode = INIT_MODE_NONE;
} else {
const gfx3DMatrix& transform3D = aContainer->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(aContainer) &&
transform3D.Is2D(&transform) && !transform.HasNonIntegerTranslation()) {
mode = gfxPlatform::GetPlatform()->UsesSubpixelAATextRendering() ?
INIT_MODE_COPY : INIT_MODE_CLEAR;
surfaceCopyNeeded = (mode == INIT_MODE_COPY);
surfaceRect.x += transform.x0;
surfaceRect.y += transform.y0;
aContainer->mSupportsComponentAlphaChildren
= gfxPlatform::GetPlatform()->UsesSubpixelAATextRendering();
}
}
surfaceRect -= gfx::IntPoint(aOffset.x, aOffset.y);
if (surfaceCopyNeeded) {
surface = compositor->CreateRenderTargetFromSource(surfaceRect, previousTarget);
} else {
surface = compositor->CreateRenderTarget(surfaceRect, mode);
}
compositor->SetRenderTarget(surface);
childOffset.x = visibleRect.x;
childOffset.y = visibleRect.y;
} else {
surface = previousTarget;
aContainer->mSupportsComponentAlphaChildren = (aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(aContainer->GetParent() && aContainer->GetParent()->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
aContainer->SortChildrenBy3DZOrder(children);
/**
* Render this container's contents.
*/
for (uint32_t i = 0; i < children.Length(); i++) {
LayerComposite* layerToRender = static_cast<LayerComposite*>(children.ElementAt(i)->ImplData());
if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty() &&
!layerToRender->GetLayer()->AsContainerLayer()) {
continue;
}
nsIntRect clipRect = layerToRender->GetLayer()->
CalculateScissorRect(aClipRect, &aManager->GetWorldTransform());
if (clipRect.IsEmpty()) {
continue;
}
layerToRender->RenderLayer(childOffset, clipRect);
// invariant: our GL context should be current here, I don't think we can
// assert it though
}
if (needsSurface) {
// Unbind the current surface and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsRefPtr<gfxImageSurface> surf = surface->Dump(aManager->GetCompositor());
WriteSnapshotToDumpFile(aContainer, surf);
}
#endif
compositor->SetRenderTarget(previousTarget);
EffectChain effectChain;
LayerManagerComposite::AddMaskEffect(aContainer->GetMaskLayer(),
effectChain,
!aContainer->GetTransform().CanDraw2D());
effectChain.mPrimaryEffect = new EffectRenderTarget(surface);
gfx::Matrix4x4 transform;
ToMatrix4x4(aContainer->GetEffectiveTransform(), transform);
gfx::Rect rect(visibleRect.x, visibleRect.y, visibleRect.width, visibleRect.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawQuad(rect, clipRect, effectChain, opacity,
transform, gfx::Point(aOffset.x, aOffset.y));
}
if (aContainer->GetFrameMetrics().IsScrollable()) {
gfx::Matrix4x4 transform;
ToMatrix4x4(aContainer->GetEffectiveTransform(), transform);
const FrameMetrics& frame = aContainer->GetFrameMetrics();
LayerRect layerViewport = frame.mViewport * frame.LayersPixelsPerCSSPixel();
gfx::Rect rect(layerViewport.x, layerViewport.y, layerViewport.width, layerViewport.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawDiagnostics(gfx::Color(1.0, 0.0, 0.0, 1.0),
rect, clipRect,
transform, gfx::Point(aOffset.x, aOffset.y));
}
}
void
LayerManagerOGL::Render()
{
SAMPLE_LABEL("LayerManagerOGL", "Render");
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return;
}
nsIntRect rect;
mWidget->GetClientBounds(rect);
WorldTransformRect(rect);
GLint width = rect.width;
GLint height = rect.height;
// We can't draw anything to something with no area
// so just return
if (width == 0 || height == 0)
return;
// If the widget size changed, we have to force a MakeCurrent
// to make sure that GL sees the updated widget size.
if (mWidgetSize.width != width ||
mWidgetSize.height != height)
{
MakeCurrent(true);
mWidgetSize.width = width;
mWidgetSize.height = height;
} else {
MakeCurrent();
}
SetupBackBuffer(width, height);
SetupPipeline(width, height, ApplyWorldTransform);
// Default blend function implements "OVER"
mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA,
LOCAL_GL_ONE, LOCAL_GL_ONE);
mGLContext->fEnable(LOCAL_GL_BLEND);
const nsIntRect *clipRect = mRoot->GetClipRect();
if (clipRect) {
nsIntRect r = *clipRect;
WorldTransformRect(r);
mGLContext->fScissor(r.x, r.y, r.width, r.height);
} else {
mGLContext->fScissor(0, 0, width, height);
}
mGLContext->fEnable(LOCAL_GL_SCISSOR_TEST);
mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0);
mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
// Render our layers.
RootLayer()->RenderLayer(mGLContext->IsDoubleBuffered() ? 0 : mBackBufferFBO,
nsIntPoint(0, 0));
mWidget->DrawWindowOverlay(this, rect);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
nsIntRect rect;
mWidget->GetBounds(rect);
nsRefPtr<gfxASurface> surf = gfxPlatform::GetPlatform()->CreateOffscreenSurface(rect.Size(), gfxASurface::CONTENT_COLOR_ALPHA);
nsRefPtr<gfxContext> ctx = new gfxContext(surf);
CopyToTarget(ctx);
WriteSnapshotToDumpFile(this, surf);
}
#endif
if (mTarget) {
CopyToTarget(mTarget);
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
return;
}
if (sDrawFPS) {
mFPS.DrawFPS(mGLContext, GetCopy2DProgram());
}
if (mGLContext->IsDoubleBuffered()) {
mGLContext->SwapBuffers();
LayerManager::PostPresent();
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
return;
}
mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
CopyProgram *copyprog = GetCopy2DProgram();
if (mFBOTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE_ARB) {
copyprog = GetCopy2DRectProgram();
}
mGLContext->fBindTexture(mFBOTextureTarget, mBackBufferTexture);
copyprog->Activate();
copyprog->SetTextureUnit(0);
if (copyprog->GetTexCoordMultiplierUniformLocation() != -1) {
float f[] = { float(width), float(height) };
copyprog->SetUniform(copyprog->GetTexCoordMultiplierUniformLocation(),
2, f);
}
// we're going to use client-side vertex arrays for this.
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
// "COPY"
mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ZERO,
LOCAL_GL_ONE, LOCAL_GL_ZERO);
// enable our vertex attribs; we'll call glVertexPointer below
// to fill with the correct data.
GLint vcattr = copyprog->AttribLocation(CopyProgram::VertexCoordAttrib);
GLint tcattr = copyprog->AttribLocation(CopyProgram::TexCoordAttrib);
mGLContext->fEnableVertexAttribArray(vcattr);
mGLContext->fEnableVertexAttribArray(tcattr);
const nsIntRect *r;
nsIntRegionRectIterator iter(mClippingRegion);
while ((r = iter.Next()) != nsnull) {
nsIntRect cRect = *r;
r = &cRect;
WorldTransformRect(cRect);
float left = (GLfloat)r->x / width;
float right = (GLfloat)r->XMost() / width;
float top = (GLfloat)r->y / height;
float bottom = (GLfloat)r->YMost() / height;
float vertices[] = { left * 2.0f - 1.0f,
-(top * 2.0f - 1.0f),
right * 2.0f - 1.0f,
-(top * 2.0f - 1.0f),
left * 2.0f - 1.0f,
-(bottom * 2.0f - 1.0f),
right * 2.0f - 1.0f,
-(bottom * 2.0f - 1.0f)
};
// Use flipped texture coordinates since our
// projection matrix also has a flip and we
// need to cancel that out.
float coords[] = { left, bottom,
right, bottom,
left, top,
right, top
};
mGLContext->fVertexAttribPointer(vcattr,
2, LOCAL_GL_FLOAT,
LOCAL_GL_FALSE,
0, vertices);
mGLContext->fVertexAttribPointer(tcattr,
2, LOCAL_GL_FLOAT,
LOCAL_GL_FALSE,
0, coords);
mGLContext->fDrawArrays(LOCAL_GL_TRIANGLE_STRIP, 0, 4);
}
mGLContext->fDisableVertexAttribArray(vcattr);
mGLContext->fDisableVertexAttribArray(tcattr);
mGLContext->fFlush();
mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
}
template<class ContainerT> void
ContainerRender(ContainerT* aContainer,
LayerManagerComposite* aManager,
const nsIntRect& aClipRect)
{
/**
* Setup our temporary surface for rendering the contents of this container.
*/
RefPtr<CompositingRenderTarget> surface;
Compositor* compositor = aManager->GetCompositor();
RefPtr<CompositingRenderTarget> previousTarget = compositor->GetCurrentRenderTarget();
nsIntRect visibleRect = aContainer->GetEffectiveVisibleRegion().GetBounds();
aContainer->mSupportsComponentAlphaChildren = false;
float opacity = aContainer->GetEffectiveOpacity();
bool needsSurface = aContainer->UseIntermediateSurface();
if (needsSurface) {
SurfaceInitMode mode = INIT_MODE_CLEAR;
bool surfaceCopyNeeded = false;
gfx::IntRect surfaceRect = gfx::IntRect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
gfx::IntPoint sourcePoint = gfx::IntPoint(visibleRect.x, visibleRect.y);
// 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.
int32_t maxTextureSize = compositor->GetMaxTextureSize();
surfaceRect.width = std::min(maxTextureSize, surfaceRect.width);
surfaceRect.height = std::min(maxTextureSize, surfaceRect.height);
if (aContainer->GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE))
{
// don't need a background, we're going to paint all opaque stuff
aContainer->mSupportsComponentAlphaChildren = true;
mode = INIT_MODE_NONE;
} else {
const gfx::Matrix4x4& transform3D = aContainer->GetEffectiveTransform();
gfx::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.
if (HasOpaqueAncestorLayer(aContainer) &&
transform3D.Is2D(&transform) && !ThebesMatrix(transform).HasNonIntegerTranslation()) {
surfaceCopyNeeded = gfxPlatform::ComponentAlphaEnabled();
sourcePoint.x += transform._31;
sourcePoint.y += transform._32;
aContainer->mSupportsComponentAlphaChildren
= gfxPlatform::ComponentAlphaEnabled();
}
}
sourcePoint -= compositor->GetCurrentRenderTarget()->GetOrigin();
if (surfaceCopyNeeded) {
surface = compositor->CreateRenderTargetFromSource(surfaceRect, previousTarget, sourcePoint);
} else {
surface = compositor->CreateRenderTarget(surfaceRect, mode);
}
if (!surface) {
return;
}
compositor->SetRenderTarget(surface);
} else {
surface = previousTarget;
aContainer->mSupportsComponentAlphaChildren = (aContainer->GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(aContainer->GetParent() && aContainer->GetParent()->SupportsComponentAlphaChildren());
}
nsAutoTArray<Layer*, 12> children;
aContainer->SortChildrenBy3DZOrder(children);
/**
* Render this container's contents.
*/
for (uint32_t i = 0; i < children.Length(); i++) {
LayerComposite* layerToRender = static_cast<LayerComposite*>(children.ElementAt(i)->ImplData());
if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty() &&
!layerToRender->GetLayer()->AsContainerLayer()) {
continue;
}
if (i + 1 < children.Length() &&
layerToRender->GetLayer()->GetEffectiveTransform().IsIdentity()) {
LayerComposite* nextLayer = static_cast<LayerComposite*>(children.ElementAt(i + 1)->ImplData());
nsIntRect nextLayerOpaqueRect;
if (nextLayer && nextLayer->GetLayer()) {
nextLayerOpaqueRect = GetOpaqueRect(nextLayer->GetLayer());
}
if (!nextLayerOpaqueRect.IsEmpty()) {
nsIntRegion visibleRegion;
visibleRegion.Sub(layerToRender->GetShadowVisibleRegion(), nextLayerOpaqueRect);
layerToRender->SetShadowVisibleRegion(visibleRegion);
if (visibleRegion.IsEmpty()) {
continue;
}
}
}
nsIntRect clipRect = layerToRender->GetLayer()->
CalculateScissorRect(aClipRect, &aManager->GetWorldTransform());
if (clipRect.IsEmpty()) {
continue;
}
if (layerToRender->HasLayerBeenComposited()) {
// Composer2D will compose this layer so skip GPU composition
// this time & reset composition flag for next composition phase
layerToRender->SetLayerComposited(false);
if (layerToRender->GetClearFB()) {
// Clear layer's visible rect on FrameBuffer with transparent pixels
gfx::Rect aRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);
compositor->clearFBRect(&aRect);
layerToRender->SetClearFB(false);
}
} else {
layerToRender->RenderLayer(clipRect);
}
if (gfxPlatform::GetPrefLayersScrollGraph()) {
DrawVelGraph(clipRect, aManager, layerToRender->GetLayer());
}
// invariant: our GL context should be current here, I don't think we can
// assert it though
}
if (needsSurface) {
// Unbind the current surface and rebind the previous one.
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = surface->Dump(aManager->GetCompositor());
WriteSnapshotToDumpFile(aContainer, surf);
}
#endif
compositor->SetRenderTarget(previousTarget);
EffectChain effectChain;
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(aContainer->GetMaskLayer(),
effectChain,
!aContainer->GetTransform().CanDraw2D());
effectChain.mPrimaryEffect = new EffectRenderTarget(surface);
gfx::Rect rect(visibleRect.x, visibleRect.y, visibleRect.width, visibleRect.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawQuad(rect, clipRect, effectChain, opacity,
aContainer->GetEffectiveTransform());
}
if (aContainer->GetFrameMetrics().IsScrollable()) {
const FrameMetrics& frame = aContainer->GetFrameMetrics();
LayerRect layerBounds = ScreenRect(frame.mCompositionBounds) * ScreenToLayerScale(1.0);
gfx::Rect rect(layerBounds.x, layerBounds.y, layerBounds.width, layerBounds.height);
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
aManager->GetCompositor()->DrawDiagnostics(DIAGNOSTIC_CONTAINER,
rect, clipRect,
aContainer->GetEffectiveTransform());
}
}
