[Impeller] fixed the behavior for clear

flutter · Sep 21, 2023 · e1918f1 · e1918f1
1 parent a0261dd
commit e1918f1
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/impeller/entity/contents/content_context.cc b/impeller/entity/contents/content_context.cc
@@ -38,10 +38,12 @@ void ContentContextOptions::ApplyToPipelineDescriptor(
 
   switch (pipeline_blend) {
     case BlendMode::kClear:
-      color0.dst_alpha_blend_factor = BlendFactor::kZero;
-      color0.dst_color_blend_factor = BlendFactor::kZero;
-      color0.src_alpha_blend_factor = BlendFactor::kZero;
-      color0.src_color_blend_factor = BlendFactor::kZero;
+      color0.alpha_blend_op = BlendOperation::kReverseSubtract;
+      color0.color_blend_op = BlendOperation::kReverseSubtract;
+      color0.dst_alpha_blend_factor = BlendFactor::kOne;
+      color0.dst_color_blend_factor = BlendFactor::kOne;
+      color0.src_alpha_blend_factor = BlendFactor::kDestinationColor;
+      color0.src_color_blend_factor = BlendFactor::kDestinationColor;
       break;
     case BlendMode::kSource:
       color0.blending_enabled = false;