void
TiledContentHost::RenderLayerBuffer(TiledLayerBufferComposite& aLayerBuffer,
const nsIntRegion& aValidRegion,
EffectChain& aEffectChain,
float aOpacity,
const gfx::Point& aOffset,
const gfx::Filter& aFilter,
const gfx::Rect& aClipRect,
const nsIntRegion& aMaskRegion,
nsIntRect aVisibleRect,
gfx::Matrix4x4 aTransform)
{
float resolution = aLayerBuffer.GetResolution();
gfxSize layerScale(1, 1);
// We assume that the current frame resolution is the one used in our primary
// layer buffer. Compensate for a changing frame resolution.
if (aLayerBuffer.GetFrameResolution() != mVideoMemoryTiledBuffer.GetFrameResolution()) {
const gfxSize& layerResolution = aLayerBuffer.GetFrameResolution();
const gfxSize& localResolution = mVideoMemoryTiledBuffer.GetFrameResolution();
layerScale.width = layerResolution.width / localResolution.width;
layerScale.height = layerResolution.height / localResolution.height;
aVisibleRect.ScaleRoundOut(layerScale.width, layerScale.height);
}
aTransform.Scale(1/(resolution * layerScale.width),
1/(resolution * layerScale.height), 1);
uint32_t rowCount = 0;
uint32_t tileX = 0;
for (int32_t x = aVisibleRect.x; x < aVisibleRect.x + aVisibleRect.width;) {
rowCount++;
int32_t tileStartX = aLayerBuffer.GetTileStart(x);
int32_t w = aLayerBuffer.GetScaledTileLength() - tileStartX;
if (x + w > aVisibleRect.x + aVisibleRect.width) {
w = aVisibleRect.x + aVisibleRect.width - x;
}
int tileY = 0;
for (int32_t y = aVisibleRect.y; y < aVisibleRect.y + aVisibleRect.height;) {
int32_t tileStartY = aLayerBuffer.GetTileStart(y);
int32_t h = aLayerBuffer.GetScaledTileLength() - tileStartY;
if (y + h > aVisibleRect.y + aVisibleRect.height) {
h = aVisibleRect.y + aVisibleRect.height - y;
}
TiledTexture tileTexture = aLayerBuffer.
GetTile(nsIntPoint(aLayerBuffer.RoundDownToTileEdge(x),
aLayerBuffer.RoundDownToTileEdge(y)));
if (tileTexture != aLayerBuffer.GetPlaceholderTile()) {
nsIntRegion tileDrawRegion;
tileDrawRegion.And(aValidRegion,
nsIntRect(x * layerScale.width,
y * layerScale.height,
w * layerScale.width,
h * layerScale.height));
tileDrawRegion.Sub(tileDrawRegion, aMaskRegion);
if (!tileDrawRegion.IsEmpty()) {
tileDrawRegion.ScaleRoundOut(resolution / layerScale.width,
resolution / layerScale.height);
nsIntPoint tileOffset((x - tileStartX) * resolution,
(y - tileStartY) * resolution);
uint32_t tileSize = aLayerBuffer.GetTileLength();
RenderTile(tileTexture, aEffectChain, aOpacity, aTransform, aOffset, aFilter, aClipRect, tileDrawRegion,
tileOffset, nsIntSize(tileSize, tileSize));
}
}
tileY++;
y += h;
}
tileX++;
x += w;
}
}
void
TiledContentHost::RenderLayerBuffer(TiledLayerBufferComposite& aLayerBuffer,
const gfxRGBA* aBackgroundColor,
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.PreScale(1/(resolution * layerScale.width),
1/(resolution * layerScale.height), 1);
uint32_t rowCount = 0;
uint32_t tileX = 0;
nsIntRect visibleRect = aVisibleRegion.GetBounds();
gfx::IntSize scaledTileSize = aLayerBuffer.GetScaledTileSize();
for (int32_t x = visibleRect.x; x < visibleRect.x + visibleRect.width;) {
rowCount++;
int32_t tileStartX = aLayerBuffer.GetTileStart(x, scaledTileSize.width);
int32_t w = scaledTileSize.width - tileStartX;
if (x + w > visibleRect.x + visibleRect.width) {
w = visibleRect.x + visibleRect.width - x;
}
int tileY = 0;
for (int32_t y = visibleRect.y; y < visibleRect.y + visibleRect.height;) {
int32_t tileStartY = aLayerBuffer.GetTileStart(y, scaledTileSize.height);
int32_t h = scaledTileSize.height - tileStartY;
if (y + h > visibleRect.y + visibleRect.height) {
h = visibleRect.y + visibleRect.height - y;
}
TileHost tileTexture = aLayerBuffer.
GetTile(nsIntPoint(aLayerBuffer.RoundDownToTileEdge(x, scaledTileSize.width),
aLayerBuffer.RoundDownToTileEdge(y, scaledTileSize.height)));
if (tileTexture != aLayerBuffer.GetPlaceholderTile()) {
nsIntRegion tileDrawRegion;
tileDrawRegion.And(nsIntRect(x, y, w, h), aLayerBuffer.GetValidRegion());
tileDrawRegion.And(tileDrawRegion, aVisibleRegion);
tileDrawRegion.Sub(tileDrawRegion, maskRegion);
if (!tileDrawRegion.IsEmpty()) {
tileDrawRegion.ScaleRoundOut(resolution, resolution);
nsIntPoint tileOffset((x - tileStartX) * resolution,
(y - tileStartY) * resolution);
gfx::IntSize tileSize = aLayerBuffer.GetTileSize();
RenderTile(tileTexture, aBackgroundColor, aEffectChain, aOpacity, aTransform,
aFilter, aClipRect, tileDrawRegion, tileOffset,
nsIntSize(tileSize.width, tileSize.height));
}
}
tileY++;
y += h;
}
tileX++;
x += w;
}
gfx::Rect rect(visibleRect.x, visibleRect.y,
visibleRect.width, visibleRect.height);
GetCompositor()->DrawDiagnostics(DiagnosticFlags::CONTENT,
rect, aClipRect, aTransform, mFlashCounter);
}