tessalation started

2026-09-28 15:31:22 +01:00
parent 6e1a531f94
commit 7a1eaa3654
24 changed files with 384 additions and 24 deletions
@@ -0,0 +1,60 @@
+// tessellation control shader
+#version 450 core
+
+// specify number of control points per patch output
+// this value controls the size of the input and output arrays
+layout (vertices=4) out;
+
+layout (location=0) in VS_OUT
+{
+	vec2 vsUV;
+	vec4 vsWorldPos;
+	vec3 vsNormal;
+	vec3 vsBiTangent;
+	vec3 vsTangent;
+	mat3 vsTBN;
+	flat uint vsChunkID;
+	flat uint vsMaterialID;
+}tc_in[];
+
+layout (location=0) out TC_OUT
+{
+	vec2 vsUV;
+	vec4 vsWorldPos;
+	vec3 vsNormal;
+	vec3 vsBiTangent;
+	vec3 vsTangent;
+	mat3 vsTBN;
+	flat uint vsChunkID;
+	flat uint vsMaterialID;
+}tc_out[];
+
+
+void main()
+{
+    // ----------------------------------------------------------------------
+    // pass attributes through
+    gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
+    tc_out[gl_InvocationID].vsUV = tc_in[gl_InvocationID].vsUV;
+    tc_out[gl_InvocationID].vsWorldPos = tc_in[gl_InvocationID].vsWorldPos;
+    tc_out[gl_InvocationID].vsNormal = tc_in[gl_InvocationID].vsNormal;
+    tc_out[gl_InvocationID].vsBiTangent = tc_in[gl_InvocationID].vsBiTangent;
+    tc_out[gl_InvocationID].vsTangent = tc_in[gl_InvocationID].vsTangent;
+    tc_out[gl_InvocationID].vsTBN = tc_in[gl_InvocationID].vsTBN;
+    tc_out[gl_InvocationID].vsChunkID = tc_in[gl_InvocationID].vsChunkID;
+    tc_out[gl_InvocationID].vsMaterialID = tc_in[gl_InvocationID].vsMaterialID;
+	
+    // ----------------------------------------------------------------------
+    // invocation zero controls tessellation levels for the entire patch
+    if (gl_InvocationID == 0)
+    {
+        
+        int divs = 63;
+        gl_TessLevelOuter[0] = divs;
+        gl_TessLevelOuter[1] = divs;
+        gl_TessLevelOuter[2] = divs;
+        gl_TessLevelOuter[3] = divs;
+        gl_TessLevelInner[0] = divs;
+        gl_TessLevelInner[1] = divs;
+    }
+}