update slides
BUG=skia:
Review URL: https://codereview.chromium.org/686853005
diff --git a/resources/slides_content2.lua b/resources/slides_content2.lua
index 19d7203..3b4eb09 100644
--- a/resources/slides_content2.lua
+++ b/resources/slides_content2.lua
@@ -1,10 +1,14 @@
Skia Update
+Skia : Access
+- code.google.com/p/skia
+- sites.google.com/site/skiadocs
+
Skia : Overview
-- portable 2D graphics engine
-- src : geometry, images, text
-- attr: shaders, filters, antialiasing, blending
-- dst : raster, gpu, pdf, picture
+- portable graphics engine
+- 2D transformations + perspective
+- primitives: text, geometry, images
+- effects: shaders, filters, antialiasing, blending
Skia : Porting
- C++ and some SIMD assembly
@@ -12,12 +16,21 @@
- Threads : wrappers for native apis
- Memory : wrappers for [new, malloc, discardable]
+Skia : Backends
+- Surface
+-- raster : ARGB, RGB16, A8 in software
+-- gpu : transcribe to OpenGL
+- Document
+-- transcribe to PDF or XPS
+- Record and Playback
+-- Picture
+-- Pipe
+
Skia : Clients
- Blink : under the GraphicsContext hood
- Chrome : ui/gfx and compositor
-- Android framework
+- Android : framework
- third parties : e.g. Mozilla
-- sites.google.com/site/skiadocs
Skia In Blink
@@ -28,7 +41,7 @@
- Push LCD decision-making out of Blink
Skia In Blink : Record-Time-Rasterization
-- Direct rendering during “Paint” pass
+- What? : direct rendering during “Paint” pass
-- Image scaling, filters
-- SVG patterns, masks
- Problematic in modern Blink
@@ -38,18 +51,19 @@
Skia In Blink : RTR response
- SkImageFilter w/ CPU and GPU implementations
-- FilterLevel : none, low, medium (mipmaps), high
+- Bitmap scaling : bilerp, mipmaps, fancy
- SkPicture for caching SVG
- SkPicture + saveLayer() for masks
-- PathOps for resolving complex paths
- SkPictureShader for device-independent patterns
Skia In Blink : Recording
-- GraphicsContext usuaually backed by SkPicture
+- GraphicsContext (now) backed by SkPicture
-- draw commands are recorded for later playback
-- all parameters must be copied or (safely) ref'd
-- may record more than is currently visible
- Resulting picture may be replayed multiple times
+-- from different thread(s)
Skia In Blink : Recording response
- New implementation
@@ -66,24 +80,44 @@
-- can be done outside of Blink thread
- GPU optimizations
-- layer "hoisting"
--- distance field fonts
+-- distance fields : fonts and concave paths
+
+Skia In Blink : multi-picture-draw
+- mpd(canvas[], picture[], matrix[], paint[])
+- Requires independent canvas objects
+-- all other parameters can be shared
+-- draw order is unspecified
+- Examples
+-- 1 picture drawing to multiple tiles (canvases)
+-- multiple pictures each drawing to its own layer
+
+Skia In Blink : MPD optimizations*
+- GPU
+-- "layer hoisting" to reduce rendertarget switching
+-- layer atlasing (also applies to imagefilters)
+-- pre-uploading of textures
+-- atlas yuv (from jpeg) to convert on gpu
+- CPU
+-- parallel execution using thread pool
+-- pre-decoding of images based on visibility
Skia : Roadmap
-Skia In Blink : Roadmap
-- GPU performance
+Skia : Roadmap - performance
+- GPU
-- extended OpenGL features (e.g. geometry shaders)
-- reordering for increased batching
-- support for new low-level OpenGL APIs
-- Cross process support
--- immediate mode ala SkGPipe
--- serialize pictures
+- CPU
+-- SIMD applied to floats
+-- smarter culling in pictures
-Skia API Roadmap
+Skia : Roadmap - API
+- Cross process support
- Direct support for sRGB
-- Stable C API / ABI
--- bindings for JS, Go, Python, Lua
- Robust file format
+- Support PDF viewing
+- Stable C ABI
+-- bindings for JS, Go, Python, Lua
Demo
-