Merge pull request samizdatco#105 from samizdatco/gpu

Render bitmaps on the GPU by default

Author: samizdatco

.github/workflows/arch.yml

@@ -1,4 +1,4 @@
-name: Build containers
+name: Rebuild containers
 on:
   workflow_dispatch:
 

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
     - name: Determine current upstream version
       id: rust-skia
       run: |
-        export TAG=$(awk '/\[dependencies.skia-safe\]/{getline; print}' skia-canvas/Cargo.toml | egrep -o '[0-9\.]+')
+        export TAG=$(make -sC skia-canvas skia-version)
         echo "::set-output name=VERSION::$TAG"
 
     - name: Checkout rust-skia
@@ -46,7 +46,7 @@ jobs:
       if: ${{ matrix.libc == 'musl' }}
       run: |
         patch -p0 < /code/alpine-build.patch
-        perl -0777 -pi.bak -e 's/(\[dependencies.skia-safe\]\n)version.*/$1path = "..\/rust-skia\/skia-safe"/m' skia-canvas/Cargo.toml
+        make -sC skia-canvas with-local-skia
 
     - name: Build module
       run: |
@@ -100,8 +100,8 @@ jobs:
         REPO: ${{ github.repository }}
       run: |
         git clone --depth 1 ${SERVER}/${REPO} skia-canvas
-        export TAG=$(awk '/\[dependencies.skia-safe\]/{getline; print}' skia-canvas/Cargo.toml | egrep -o '[0-9\.]+')
-        perl -0777 -pi.bak -e 's/(\[dependencies.skia-safe\]\n)version.*/$1path = "..\/rust-skia\/skia-safe"/m' skia-canvas/Cargo.toml
+        export TAG=$(make -sC skia-canvas skia-version)
+        make -sC skia-canvas with-local-skia
         echo "::set-output name=VERSION::$TAG"
 
     - name: Checkout rust-skia
@@ -173,7 +173,7 @@ jobs:
     - name: Determine current upstream version
       id: rust-skia
       run: |
-        export TAG=$(awk '/skia-safe/{getline; print}' skia-canvas/Cargo.toml | egrep -o '[0-9\.]+')
+        export TAG=$(make -sC skia-canvas skia-version)
         echo "::set-output name=VERSION::$TAG"
 
     - name: Checkout rust-skia
@@ -186,7 +186,7 @@ jobs:
 
     - name: Patch sources
       run: |
-        perl -0777 -pi.bak -e 's/(\[dependencies.skia-safe\]\n)version.*/$1path = "..\/rust-skia\/skia-safe"/m' skia-canvas/Cargo.toml
+        make -sC skia-canvas with-local-skia
 
     - name: Use system GN
       run: |

CHANGELOG.md

@@ -2,8 +2,19 @@
 
 ## 🥚 ⟩ [Unreleased]
 
+### New Features
+- Rendering now occurs on the GPU by default and can be configured using the **Canvas**'s [`.gpu`][canvas_gpu] property. If the platform supports hardware-accelerated rendering (using Metal on macOS and Vulkan on Linux & Windows), the property will be `true` by default and can be set to `false` to use the software renderer.
+
 ### Bugfixes
 - The `FontLibrary.reset()` method didn't actually remove previously installed fonts that had already been drawn with (and thus cached). It now clears those caches, which also means previously used fonts can now be replaced by calling `.use()` again with the same family name.
+- The [`.drawCanvas()`][drawCanvas] routine now applies filter effects and shadows consistent with the current resolution and transformation state.
+
+### Misc. Improvements
+- The [`.filter`][filter] property's `"blur(…)"` and `"drop-shadow(…)"` effects now match browser behavior much more closely and scale appropriately with the `density` export option.
+- Antialiasing is smoother, particularly when down-scaling images, thanks to the use of mipmaps rather than Skia's (apparently buggy?) implementation of bucubic interpolation.
+
+[canvas_gpu]: https://github.com/samizdatco/skia-canvas#gpu
+[filter]: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/filter
 
 ## 📦 ⟩ [v0.9.30] ⟩ Jun 7, 2022