X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=ld42_outofspace;a=blobdiff_plain;f=sdr%2Ffield.tc.glsl;h=e742def39faa19c49bb9d5db0e1867946f03ac9a;hp=71d6560152205d093cbc22b20fcb545b42ca57ae;hb=79148ed519ea06cb506b512ffd2718c4b03f6f11;hpb=abb6d1780905e52dd6959211b9040de72c3306bd

diff --git a/sdr/field.tc.glsl b/sdr/field.tc.glsl
index 71d6560..e742def 100644
--- a/sdr/field.tc.glsl
+++ b/sdr/field.tc.glsl
@@ -4,17 +4,23 @@ layout(vertices = 4) out;
 
 uniform int tess_level;
 
+in float dist[gl_MaxPatchVertices];
+
 void main()
 {
 	gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
 	gl_out[gl_InvocationID].gl_TexCoord[0] = gl_in[gl_InvocationID].gl_TexCoord[0];
 	gl_out[gl_InvocationID].gl_TexCoord[1] = gl_in[gl_InvocationID].gl_TexCoord[1];
 
-	gl_TessLevelInner[0] = tess_level;
-	gl_TessLevelInner[1] = tess_level;
+	const float min_tess_dist = 800.0;
+	float t = clamp(1.0 - dist[0] / min_tess_dist, 0.0, 1.0);
+	int tess = int(t * float(tess_level - 1.0)) + 1;
+
+	gl_TessLevelInner[0] = tess;
+	gl_TessLevelInner[1] = tess;
 
-	gl_TessLevelOuter[0] = tess_level;
-	gl_TessLevelOuter[1] = tess_level;
-	gl_TessLevelOuter[2] = tess_level;
-	gl_TessLevelOuter[3] = tess_level;
+	gl_TessLevelOuter[0] = tess;
+	gl_TessLevelOuter[1] = tess;
+	gl_TessLevelOuter[2] = tess;
+	gl_TessLevelOuter[3] = tess;
 }