diff options
Diffstat (limited to 'gfx/gl/shaders/networkCurve.tesc')
| -rw-r--r-- | gfx/gl/shaders/networkCurve.tesc | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/gfx/gl/shaders/networkCurve.tesc b/gfx/gl/shaders/networkCurve.tesc index 4221e64..5a6e449 100644 --- a/gfx/gl/shaders/networkCurve.tesc +++ b/gfx/gl/shaders/networkCurve.tesc @@ -1,43 +1,37 @@ #version 460 core layout(vertices = 1) out; -flat in ivec3 apos[]; -flat in ivec3 bpos[]; -flat in ivec3 cpos[]; + +flat in ivec3 pos[][2]; +flat in ivec2 cpos[]; flat in float reps[]; -flat in float aangle[]; -flat in float bangle[]; +flat in float angles[][2]; flat in float radius[]; -flat out ivec3 c_apos[]; -flat out ivec3 c_bpos[]; -flat out ivec3 c_cpos[]; +flat out ivec3 c_pos[][2]; +flat out ivec2 c_cpos[]; flat out float c_reps[]; -flat out float c_aangle[]; -flat out float c_bangle[]; +flat out float c_angles[][2]; flat out float c_radius[]; -int -min2pow(float target) +float +segments() { - int x = 1; - while (x < target) { - x <<= 1; - } - return x; + const float arc = angles[gl_InvocationID][0] - angles[gl_InvocationID][1]; + const float error = 100.; + const float diff = acos(1.f - (error / radius[gl_InvocationID])); + return clamp(arc / diff, arc, 180); } void main() { - c_apos[gl_InvocationID] = apos[gl_InvocationID]; - c_bpos[gl_InvocationID] = bpos[gl_InvocationID]; + c_pos[gl_InvocationID] = pos[gl_InvocationID]; c_cpos[gl_InvocationID] = cpos[gl_InvocationID]; c_reps[gl_InvocationID] = reps[gl_InvocationID]; - c_aangle[gl_InvocationID] = aangle[gl_InvocationID]; - c_bangle[gl_InvocationID] = bangle[gl_InvocationID]; + c_angles[gl_InvocationID] = angles[gl_InvocationID]; c_radius[gl_InvocationID] = radius[gl_InvocationID]; gl_TessLevelOuter[0] = 1; - gl_TessLevelOuter[1] = min2pow(reps[gl_InvocationID]); + gl_TessLevelOuter[1] = segments(); } |