fix: basic resource is also

galacean · Nov 21, 2024 · 26b9060 · 26b9060
1 parent e252e1b
commit 26b9060
Show file tree

Hide file tree

Showing 2 changed files with 15 additions and 0 deletions.
diff --git a/packages/core/src/BasicResources.ts b/packages/core/src/BasicResources.ts
@@ -8,6 +8,7 @@ import { MeshTopology } from "./graphic/enums/MeshTopology";
 import { VertexElementFormat } from "./graphic/enums/VertexElementFormat";
 import { Material } from "./material";
 import { ModelMesh } from "./mesh";
+import { BlendFactor, BlendOperation } from "./shader";
 import { Shader } from "./shader/Shader";
 import { Texture, Texture2D, TextureCube, TextureCubeFace } from "./texture";
 import { Texture2DArray } from "./texture/Texture2DArray";
@@ -46,6 +47,14 @@ export class BasicResources {
     blitMaterial._addReferCount(1);
     blitMaterial.renderState.depthState.enabled = false;
     blitMaterial.renderState.depthState.writeEnabled = false;
+    const blendState = blitMaterial.renderState.blendState.targetBlendState;
+
+    blendState.enabled = true;
+    blendState.sourceColorBlendFactor = BlendFactor.SourceAlpha;
+    blendState.destinationColorBlendFactor = BlendFactor.OneMinusSourceAlpha;
+    blendState.sourceAlphaBlendFactor = BlendFactor.One;
+    blendState.destinationAlphaBlendFactor = BlendFactor.OneMinusSourceAlpha;
+    blendState.colorBlendOperation = blendState.alphaBlendOperation = BlendOperation.Add;
 
     this.blitMesh = this._createBlitMesh(engine, vertices);
     this.flipYBlitMesh = this._createBlitMesh(engine, flipYVertices);

diff --git a/packages/core/src/RenderPipeline/PipelineUtils.ts b/packages/core/src/RenderPipeline/PipelineUtils.ts
@@ -1,5 +1,6 @@
 import { Vector4 } from "@galacean/engine-math";
 import { Engine } from "../Engine";
+import { CameraClearFlags } from "../enums/CameraClearFlags";
 import { Material } from "../material";
 import { ShaderProperty } from "../shader";
 import { Shader } from "../shader/Shader";
@@ -194,6 +195,11 @@ export class PipelineUtils {
     program.uploadAll(program.materialUniformBlock, blitMaterial.shaderData);
     program.uploadUnGroupTextures();
 
+    if (!material) {
+      blitMaterial.renderState.blendState.targetBlendState.enabled = !(
+        context.camera.clearFlags & CameraClearFlags.Color
+      );
+    }
     (pass._renderState || blitMaterial.renderState)._applyStates(
       engine,
       false,