gfx2d: alpha blending Sprite2D

Signed-off-by: Stephen Gutekanst <[email protected]>
hexops · Sep 2, 2023 · 2b9ec3b · 2b9ec3b
1 parent 67dbe9b
commit 2b9ec3b
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/src/gfx2d/Sprite2D.zig b/src/gfx2d/Sprite2D.zig
@@ -117,7 +117,18 @@ pub fn engineSprite2dInit(
     );
 
     const shader_module = device.createShaderModuleWGSL("shader.wgsl", @embedFile("shader.wgsl"));
-    const blend = gpu.BlendState{};
+    const blend = gpu.BlendState{
+        .color = .{
+            .operation = .add,
+            .src_factor = .src_alpha,
+            .dst_factor = .one_minus_src_alpha,
+        },
+        .alpha = .{
+            .operation = .add,
+            .src_factor = .one,
+            .dst_factor = .zero,
+        },
+    };
     const color_target = gpu.ColorTargetState{
         .format = core.descriptor.format,
         .blend = &blend,