wgpu: Fix repeat & reflect gradients

render/wgpu/shaders/gradient/common.wgsl

@@ -92,26 +92,6 @@ fn main_fragment(in: VertexOutput) -> @location(0) vec4<f32> {
     // Calculate normalized `t` position in gradient, [0.0, 1.0] being the bounds of the ratios.
     var t: f32 = find_t(gradient.focal_point, in.uv);
 
-    #if gradient_repeat_mode == 1
-        // Mirror
-        if( t < 0.0 ) {
-            t = -t;
-        }
-        if ( (i32(t) & 1) == 0 ) {
-            t = fract(t);
-        } else {
-            t = 1.0 - fract(t);
-        }
-    #endif
-    #if gradient_repeat_mode == 2
-        // Repeat
-        t = fract(t);
-    #endif
-    #if gradient_repeat_mode == 3
-        // Clamp
-        t = clamp(t, 0.0, 1.0);
-    #endif
-
     t = clamp(t, ratio(0u), ratio(last));
 
     // Find the two gradient colors bordering our position.

render/wgpu/shaders/gradient/mode/focal.wgsl

@@ -5,7 +5,27 @@ override fn gradient::find_t(focal_point: f32, uv: vec2<f32>) -> f32 {
     var d: vec2<f32> = vec2<f32>(focal_point, 0.0) - uv;
     let l = length(d);
     d = d / l;
-    return l / (sqrt(1.0 - focal_point * focal_point * d.y * d.y) + focal_point * d.x);
+    var t = l / (sqrt(1.0 - focal_point * focal_point * d.y * d.y) + focal_point * d.x);
+    #if gradient_repeat_mode == 1
+        // Mirror
+        if( t < 0.0 ) {
+            t = -t;
+        }
+        if ( (i32(t) & 1) == 0 ) {
+            t = fract(t);
+        } else {
+            t = 1.0 - fract(t);
+        }
+    #endif
+    #if gradient_repeat_mode == 2
+        // Repeat
+        t = fract(t);
+    #endif
+    #if gradient_repeat_mode == 3
+        // Clamp
+        t = clamp(t, 0.0, 1.0);
+    #endif
+    return t;
 }
 
 @vertex

render/wgpu/shaders/gradient/mode/linear.wgsl

@@ -1,7 +1,27 @@
 #import gradient
 
 override fn gradient::find_t(focal_point: f32, uv: vec2<f32>) -> f32 {
-    return uv.x;
+    var t = uv.x;
+    #if gradient_repeat_mode == 1
+        // Mirror
+        if( t < 0.0 ) {
+            t = -t;
+        }
+        if ( (i32(t) & 1) == 0 ) {
+            t = fract(t);
+        } else {
+            t = 1.0 - fract(t);
+        }
+    #endif
+    #if gradient_repeat_mode == 2
+        // Repeat
+        t = fract(t);
+    #endif
+    #if gradient_repeat_mode == 3
+        // Clamp
+        t = clamp(t, 0.0, 1.0);
+    #endif
+    return t;
 }
 
 @vertex

render/wgpu/shaders/gradient/mode/radial.wgsl

@@ -1,7 +1,27 @@
 #import gradient
 
 override fn gradient::find_t(focal_point: f32, uv: vec2<f32>) -> f32 {
-    return length(uv * 2.0 - 1.0);
+    var t = length(uv * 2.0 - 1.0);
+    #if gradient_repeat_mode == 1
+        // Mirror
+        if( t < 0.0 ) {
+            t = -t;
+        }
+        if ( (i32(t) & 1) == 0 ) {
+            t = fract(t);
+        } else {
+            t = 1.0 - fract(t);
+        }
+    #endif
+    #if gradient_repeat_mode == 2
+        // Repeat
+        t = fract(t);
+    #endif
+    #if gradient_repeat_mode == 3
+        // Clamp
+        t = clamp(t, 0.0, 1.0);
+    #endif
+    return t;
 }
 
 @vertex

tests/tests/swfs/visual/drawing_api/fills_and_lines/test.toml

@@ -1,8 +1,7 @@
 num_frames = 1
-ignore = true
 
 [image_comparison]
-tolerance = 0
+tolerance = 2
 
 [player_options]
 with_renderer = { optional = true, sample_count = 1 }

tests/tests/swfs/visual/simple_shapes/gradients/gradients/test.toml

@@ -1,8 +1,7 @@
 num_frames = 1
-ignore = true
 
 [image_comparison]
-tolerance = 0
+tolerance = 1
 
 [player_options]
 with_renderer = { optional = true, sample_count = 1 }

tests/tests/swfs/visual/simple_shapes/gradients/reflect/test.toml

@@ -1,8 +1,7 @@
 num_frames = 1
-ignore = true
 
 [image_comparison]
-tolerance = 0
+tolerance = 1
 
 [player_options]
 with_renderer = { optional = true, sample_count = 1 }

tests/tests/swfs/visual/simple_shapes/gradients/repeat/test.toml

@@ -1,8 +1,7 @@
 num_frames = 1
-ignore = true
 
 [image_comparison]
-tolerance = 0
+tolerance = 1
 
 [player_options]
 with_renderer = { optional = true, sample_count = 1 }