Add opacity import

2026-03-06 16:42:21 +08:00
parent 06392c2f72
commit 1224da4204
4 changed files with 406 additions and 4 deletions
@@ -74,7 +74,7 @@ namespace SplatVfx
                // _cachedBuffers.scale.SetData(ScaleArray);
                // _cachedBuffers.rotation.SetData(RotationArray);
                // _cachedBuffers.color.SetData(ColorArray);
-                // _cachedBuffers.opacity.SetData(OpacityArray);
+                _cachedBuffers.opacity.SetData(OpacityArray);
                // _cachedBuffers.sh.SetData(SHArray);
            }
            return _cachedBuffers;
@@ -30,6 +30,10 @@ namespace SplatVfx
        //   { get => (string)_colorBufferProperty;
        //     set => _colorBufferProperty = value; }

+        public string OpacityBufferProperty
+          { get => (string)_opacityBufferProperty;
+            set => _opacityBufferProperty = value; }
+
        // [VFXPropertyBinding("System.UInt32"), SerializeField]
        // ExposedProperty _splatCountProperty = "SplatCount";

@@ -42,6 +46,9 @@ namespace SplatVfx
        // [VFXPropertyBinding("UnityEngine.GraphicsBuffer"), SerializeField]
        // ExposedProperty _colorBufferProperty = "ColorBuffer";

+        [VFXPropertyBinding("UnityEngine.GraphicsBuffer"), SerializeField]
+        ExposedProperty _opacityBufferProperty = "OpacityBuffer";
+
        public override bool IsValid(VisualEffect component)
          => SplatData != null &&
             //  component.HasUInt(_splatCountProperty) &&
@@ -55,6 +62,7 @@ namespace SplatVfx
            component.SetGraphicsBuffer(_positionBufferProperty, SplatData.PositionBuffer);
            // component.SetGraphicsBuffer(_axisBufferProperty, SplatData.AxisBuffer);
            // component.SetGraphicsBuffer(_colorBufferProperty, SplatData.ColorBuffer);
+            component.SetGraphicsBuffer(_opacityBufferProperty, SplatData.OpacityBuffer);
        }

        // public override string ToString()
@@ -28,6 +28,7 @@ using Unity.Collections;
        5. Use a struct for header_info
        6. Write handler for data other than 32 bit float
        7. Pass around Span<byte> instead of byte[] for memory safety
+        8. Implement opacity clamping in the VFX Graph
 *******************************************************************************/

 namespace SplatVfx.Editor
@@ -178,6 +179,11 @@ namespace SplatVfx.Editor
                        case "z":
                            splatData.PositionArray[i].z = val;

+                            break;
+
+                        case "opacity":
+                            splatData.OpacityArray[i] = 255 / (1 + math.exp(-val));
+
                            break;
                    }
                }
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-    x: 283
+    x: 282
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-    height: 1065
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@@ -114,6 +117,21 @@ MonoBehaviour:
    max: Infinity
    enumValues: []
    descendantCount: 0
+  - name: OpacityBuffer
+    path: 
+    tooltip: 
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+    spaceable: 0
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