60 lines
1.8 KiB
GLSL
60 lines
1.8 KiB
GLSL
// tessellation control shader
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#version 450 core
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// specify number of control points per patch output
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// this value controls the size of the input and output arrays
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layout (vertices=4) out;
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layout (location=0) in VS_OUT
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{
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vec2 vsUV;
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vec4 vsWorldPos;
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vec3 vsNormal;
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vec3 vsBiTangent;
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vec3 vsTangent;
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mat3 vsTBN;
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flat uint vsChunkID;
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flat uint vsMaterialID;
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}tc_in[];
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layout (location=0) out TC_OUT
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{
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vec2 vsUV;
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vec4 vsWorldPos;
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vec3 vsNormal;
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vec3 vsBiTangent;
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vec3 vsTangent;
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mat3 vsTBN;
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flat uint vsChunkID;
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flat uint vsMaterialID;
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}tc_out[];
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void main()
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{
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// ----------------------------------------------------------------------
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// pass attributes through
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gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
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tc_out[gl_InvocationID].vsUV = tc_in[gl_InvocationID].vsUV;
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tc_out[gl_InvocationID].vsWorldPos = tc_in[gl_InvocationID].vsWorldPos;
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tc_out[gl_InvocationID].vsNormal = tc_in[gl_InvocationID].vsNormal;
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tc_out[gl_InvocationID].vsBiTangent = tc_in[gl_InvocationID].vsBiTangent;
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tc_out[gl_InvocationID].vsTangent = tc_in[gl_InvocationID].vsTangent;
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tc_out[gl_InvocationID].vsTBN = tc_in[gl_InvocationID].vsTBN;
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tc_out[gl_InvocationID].vsChunkID = tc_in[gl_InvocationID].vsChunkID;
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tc_out[gl_InvocationID].vsMaterialID = tc_in[gl_InvocationID].vsMaterialID;
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// ----------------------------------------------------------------------
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// invocation zero controls tessellation levels for the entire patch
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if (gl_InvocationID == 0)
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{
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int divs = 63;
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gl_TessLevelOuter[0] = divs;
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gl_TessLevelOuter[1] = divs;
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gl_TessLevelOuter[2] = divs;
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gl_TessLevelOuter[3] = divs;
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gl_TessLevelInner[0] = divs;
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gl_TessLevelInner[1] = divs;
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}
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} |