Index: cc/layers/picture_layer_impl.cc |
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc |
index f385bddd8003344734c5ee27c144d901da007d3e..3a740c8624b925d8c9c863c55d3ece785be2a7b6 100644 |
--- a/cc/layers/picture_layer_impl.cc |
+++ b/cc/layers/picture_layer_impl.cc |
@@ -840,8 +840,10 @@ gfx::Size PictureLayerImpl::CalculateTileSize( |
return gfx::Size(tile_width, tile_height); |
} |
-void PictureLayerImpl::GetContentsResourceId(ResourceId* resource_id, |
- gfx::Size* resource_size) const { |
+void PictureLayerImpl::GetContentsResourceId( |
+ ResourceId* resource_id, |
+ gfx::Size* resource_size, |
+ gfx::SizeF* resource_uv_size) const { |
// The bounds and the pile size may differ if the pile wasn't updated (ie. |
// PictureLayer::Update didn't happen). In that case the pile will be empty. |
DCHECK(raster_source_->GetSize().IsEmpty() || |
@@ -874,6 +876,18 @@ void PictureLayerImpl::GetContentsResourceId(ResourceId* resource_id, |
*resource_id = draw_info.resource_id(); |
*resource_size = draw_info.resource_size(); |
+ // |resource_uv_size| represents the range of UV coordinates that map to the |
+ // content being drawn. Typically, we draw to the entire texture, so these |
+ // coordinatesis are (1.0f, 1.0f). However, if we are rasterizing to an |
enne (OOO)
2017/05/02 21:31:37
typo
ericrk
2017/05/04 19:23:53
Done.
|
+ // over-large texture, this size will be smaller, mapping to the subset of the |
+ // texture being used. |
+ gfx::SizeF requested_tile_size = |
+ gfx::SizeF(iter->tiling()->tiling_data()->tiling_size()); |
enne (OOO)
2017/05/02 21:31:37
Is this the same as bounds()?
ericrk
2017/05/04 19:23:53
Most of the time, yes. In certain cases, bounds ap
|
+ DCHECK_LE(requested_tile_size.width(), draw_info.resource_size().width()); |
+ DCHECK_LE(requested_tile_size.height(), draw_info.resource_size().height()); |
+ *resource_uv_size = gfx::SizeF( |
+ requested_tile_size.width() / draw_info.resource_size().width(), |
+ requested_tile_size.height() / draw_info.resource_size().height()); |
} |
void PictureLayerImpl::SetNearestNeighbor(bool nearest_neighbor) { |