Use Fused-Multiply-Add (#246)

This reverts commit 598cf6c.
parasyte · Dec 31, 2021 · d3dbc8b · d3dbc8b
1 parent c1962ae
commit d3dbc8b
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/examples/custom-shader/shaders/noise.wgsl b/examples/custom-shader/shaders/noise.wgsl
@@ -10,7 +10,7 @@ fn vs_main(
     [[location(0)]] position: vec2<f32>,
 ) -> VertexOutput {
     var out: VertexOutput;
-    out.tex_coord = position * vec2<f32>(0.5, -0.5) + 0.5;
+    out.tex_coord = fma(position, vec2<f32>(0.5, -0.5), vec2<f32>(0.5, 0.5));
     out.position = vec4<f32>(position, 0.0, 1.0);
     return out;
 }

diff --git a/shaders/scale.wgsl b/shaders/scale.wgsl
@@ -15,7 +15,7 @@ fn vs_main(
     [[location(0)]] position: vec2<f32>,
 ) -> VertexOutput {
     var out: VertexOutput;
-    out.tex_coord = position * vec2<f32>(0.5, -0.5) + 0.5;
+    out.tex_coord = fma(position, vec2<f32>(0.5, -0.5), vec2<f32>(0.5, 0.5));
     out.position = r_locals.transform * vec4<f32>(position, 0.0, 1.0);
     return out;
 }