Flip Y dimension in RGB shader

silx-kit · Feb 16, 2022 · 06eab05 · 06eab05
1 parent 83bc21d
commit 06eab05
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/packages/lib/src/vis/rgb/RgbMesh.tsx b/packages/lib/src/vis/rgb/RgbMesh.tsx
@@ -25,9 +25,11 @@ function RgbMesh(props: Props) {
       varying vec2 coords;
 
       void main() {
-        float red = texture(data, vec3(0., coords)).r;
-        float green = texture(data, vec3(0.5, coords)).r;
-        float blue = texture(data, vec3(1., coords)).r;
+        float yFlipped = 1. - coords.y;
+
+        float red = texture(data, vec3(0., coords.x, yFlipped)).r;
+        float green = texture(data, vec3(0.5, coords.x, yFlipped)).r;
+        float blue = texture(data, vec3(1., coords.x, yFlipped)).r;
 
         if (bgr) {
           gl_FragColor = vec4(blue, green, red, 1.);
@@ -39,7 +41,7 @@ function RgbMesh(props: Props) {
   };
 
   return (
-    <VisMesh scale={[1, -1, 1]}>
+    <VisMesh>
       <shaderMaterial args={[shader]} />
     </VisMesh>
   );