invoke function to set blend target (#7299)

cocos · Sep 3, 2020 · acdcd87 · acdcd87
1 parent 9ffff43
commit acdcd87
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/cocos/core/gfx/pipeline-state.ts b/cocos/core/gfx/pipeline-state.ts
@@ -138,7 +138,19 @@ export class GFXBlendState {
     public isA2C: boolean = false;
     public isIndepend: boolean = false;
     public blendColor: GFXColor = { r: 0, g: 0, b: 0, a: 0 };
-    public targets: GFXBlendTarget[] = [new GFXBlendTarget()];
+    public targets: GFXBlendTarget[] = [new GFXBlendTarget()]
+
+    /**
+     * @en Should use this function to set target, or it will not work
+     * on native platforms, as native can not support this feature, 
+     * such as `blendState[i] = target;`.
+     * 
+     * @param index The index to set target.
+     * @param target The target to be set.
+     */
+    public setTarget (index: number, target: GFXBlendTarget) {
+        this.targets[index] = target;
+    }
 }
 
 /**

diff --git a/cocos/core/renderer/core/pass.ts b/cocos/core/renderer/core/pass.ts
@@ -140,7 +140,7 @@ export class Pass {
             const bsInfo = info.blendState;
             if (bsInfo.targets) {
                 bsInfo.targets.forEach((t, i) => Object.assign(
-                bs.targets[i] || (bs.targets[i] = new GFXBlendTarget()), t));
+                bs.targets[i] || (bs.setTarget(i, new GFXBlendTarget()), t)));
             }
             if (bsInfo.isA2C !== undefined) { bs.isA2C = bsInfo.isA2C; }
             if (bsInfo.isIndepend !== undefined) { bs.isIndepend = bsInfo.isIndepend; }