Initial Compute Shader for Plate Generation.

shaders/compute/PlateExpansion.glsl

@@ -0,0 +1,40 @@
+#[compute]
+#version 450
+// Invocations in the (x, y, z) dimension
+layout(local_size_x = 1000, local_size_y = 1, local_size_z = 1) in;
+
+// A binding to the buffer we create in our script
+layout(set = 0, binding = 0, std430) restrict buffer PointBuffer {
+	int points[];
+}
+pointbuffer;
+layout(set = 0, binding = 1, std430) restrict buffer NeighborBuffer {
+	int neighbors[];
+}
+neighborbuffer;
+layout(set = 0, binding = 2, std430) restrict buffer PlateBuffer {
+	int plateid[];
+}
+platebuffer;
+
+// The code we want to execute in each invocation
+void main() {
+	// Iteration is gl_GlobalInvocationID.x
+	// Neighbors for Point gl_GlobalInvocationID.y
+	for (int point = 0; point < int(gl_WorkGroupSize.x); point++)
+	{
+		int localpoint =  int(gl_WorkGroupID.x)*int(gl_WorkGroupSize.x) + point;
+		for (int neighbor = 0; neighbor < 6; neighbor++) {
+			if (neighborbuffer.neighbors[localpoint*6+neighbor] == -1)
+			{
+				continue;
+			}
+			if (platebuffer.plateid[localpoint] != -1 && platebuffer.plateid[neighborbuffer.neighbors[localpoint*6+neighbor]] == -1)
+			{
+				// Neighbor unclaimed, and we can claim it.
+				platebuffer.plateid[neighborbuffer.neighbors[localpoint*6+neighbor]] = platebuffer.plateid[localpoint];
+			}
+		}
+	}
+	
+}