init

gamedata/shaders/d3d11/fluid_obststaticbox.ps.hlsl

@@ -0,0 +1,51 @@
+#include "fluid_common.hlsli"
+
+cbuffer BoxBounds
+{
+    //	float3	boxLBDcorner;
+    //	float3	boxRTUcorner;
+    float4 boxLBDcorner;
+    float4 boxRTUcorner;
+}
+
+struct PSDrawBoxOut
+{
+    float4 obstacle : SV_TARGET0;
+    float4 velocity : SV_TARGET1;
+};
+
+bool PointIsInsideBox(float3 p, float3 LBUcorner, float3 RTDcorner)
+{
+    return ((p.x > LBUcorner.x) && (p.x < RTDcorner.x) &&
+        (p.y > LBUcorner.y) && (p.y < RTDcorner.y) &&
+        (p.z > LBUcorner.z) && (p.z < RTDcorner.z));
+}
+
+//	Pixel
+PSDrawBoxOut main(p_fluidsim input)
+{
+    PSDrawBoxOut voxel;
+    float3 innerboxLBDcorner = boxLBDcorner + 1;
+    float3 innerboxRTUcorner = boxRTUcorner - 1;
+    // cells completely inside box = 1.0
+    if (PointIsInsideBox(input.cell0, innerboxLBDcorner, innerboxRTUcorner))
+    {
+        voxel.obstacle = 0.5;
+        voxel.velocity = 0;
+        return voxel;
+    }
+
+    // cells in box boundary = 0.5
+    if (PointIsInsideBox(input.cell0, boxLBDcorner, boxRTUcorner))
+    {
+        voxel.obstacle = 1.0;
+        // voxel.velocity = float4(obstVelocity.xyz,1);
+        voxel.velocity = 0;
+        return voxel;
+    }
+
+    //	Kill texel to preserve other obstacles
+    clip(-1);
+
+    return (PSDrawBoxOut)0;
+}