🆙 Added Black to Aplha Filter, to get the real deal for blending furni

packages/utils/src/filters/BlackToAlphaFilter.ts

@@ -0,0 +1,66 @@
+import { Filter, FilterSystem, GlProgram, RenderSurface, Texture } from 'pixi.js';
+
+export class BlackToAlphaFilter extends Filter
+{
+    constructor()
+    {
+        const glProgram = GlProgram.from({
+            vertex: `in vec2 aPosition;
+            out vec2 vTextureCoord;
+
+            uniform vec4 uInputSize;
+            uniform vec4 uOutputFrame;
+            uniform vec4 uOutputTexture;
+
+            vec4 filterVertexPosition( void )
+            {
+                vec2 position = aPosition * uOutputFrame.zw + uOutputFrame.xy;
+
+                position.x = position.x * (2.0 / uOutputTexture.x) - 1.0;
+                position.y = position.y * (2.0*uOutputTexture.z / uOutputTexture.y) - uOutputTexture.z;
+
+                return vec4(position, 0.0, 1.0);
+            }
+
+            vec2 filterTextureCoord( void )
+            {
+                return aPosition * (uOutputFrame.zw * uInputSize.zw);
+            }
+
+            void main(void)
+            {
+                gl_Position = filterVertexPosition();
+                vTextureCoord = filterTextureCoord();
+            }`,
+            fragment: `
+            in vec2 vTextureCoord;
+            out vec4 finalColor;
+
+            uniform sampler2D uTexture;
+
+            void main(void) {
+                vec4 color = texture(uTexture, vTextureCoord);
+                float brightness = max(max(color.r, color.g), color.b);
+                finalColor = vec4(color.rgb, color.a * brightness);
+            }
+            `,
+            name: 'black-to-alpha-filter',
+        });
+
+        super({
+            gpuProgram: null,
+            glProgram,
+            resources: {},
+        });
+    }
+
+    public apply(
+        filterManager: FilterSystem,
+        input: Texture,
+        output: RenderSurface,
+        clearMode: boolean,
+    ): void
+    {
+        filterManager.applyFilter(this, input, output, clearMode);
+    }
+}

packages/utils/src/filters/index.ts

@@ -1,3 +1,4 @@
+export * from './BlackToAlphaFilter';
 export * from './PaletteMapFilter';
 export * from './PlaneMaskFilter';
 export * from './WiredFilter';