Add CI action for validation of native shaders

.github/workflows/validation.yml

@@ -0,0 +1,16 @@
+name: validation
+on:
+  pull_request:
+    paths:
+    - 'tests/snapshots/*.snap'
+
+jobs:
+  linux:
+    name: SPIR-V and GLSL
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install tools
+        run: sudo apt-get install spirv-tools glslang-tools
+      - run: make validate-spv
+      - run: make validate-glsl

.gitignore

@@ -2,6 +2,7 @@
 **/*.rs.bk
 Cargo.lock
 .DS_Store
+.fuse_hidden*
 .idea
 /*.dot
 /*.metal

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all clean validate-spv validate-msl
+.PHONY: all clean validate-spv validate-msl validate-glsl
 .SECONDARY: boids.metal quad.metal
 SNAPSHOTS_IN=tests/in
 SNAPSHOTS_OUT=tests/out