Add gaussian splat asset caching groundwork

2026-04-12 11:15:59 +08:00
parent b7ce8618d2
commit 7ee28a7969
16 changed files with 1652 additions and 88 deletions
--- a/engine/assets/builtin/shaders/gaussian-splat-composite.shader
+++ b/engine/assets/builtin/shaders/gaussian-splat-composite.shader
@@ -0,0 +1,46 @@
+Shader "Builtin Gaussian Splat Composite"
+{
+    SubShader
+    {
+        Pass
+        {
+            Name "GaussianComposite"
+            Tags { "LightMode" = "GaussianComposite" }
+            Cull Off
+            ZWrite Off
+            ZTest Always
+            Blend One OneMinusSrcAlpha
+            HLSLPROGRAM
+            #pragma target 4.5
+            #pragma vertex MainVS
+            #pragma fragment MainPS
+
+            Texture2D GaussianSplatAccumulationTexture;
+
+            struct VSOutput
+            {
+                float4 position : SV_POSITION;
+            };
+
+            VSOutput MainVS(uint vertexId : SV_VertexID)
+            {
+                const float2 positions[3] = {
+                    float2(-1.0f, -1.0f),
+                    float2(-1.0f,  3.0f),
+                    float2( 3.0f, -1.0f)
+                };
+
+                VSOutput output;
+                output.position = float4(positions[vertexId], 1.0f, 1.0f);
+                return output;
+            }
+
+            float4 MainPS(VSOutput input) : SV_TARGET
+            {
+                const int2 pixelCoord = int2(input.position.xy);
+                return GaussianSplatAccumulationTexture.Load(int3(pixelCoord, 0));
+            }
+            ENDHLSL
+        }
+    }
+}