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[mtl, canvas] remove unused hull matrix

This commit is contained in:
Martin Fouilleul 2023-07-07 16:44:32 +02:00
parent 59fdc27ac6
commit 7573c40c56
2 changed files with 0 additions and 44 deletions
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1
src/mtl_renderer.h
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@ -53,7 +53,6 @@ typedef struct mg_mtl_segment
mg_mtl_seg_config config; //TODO pack these
int windingIncrement;
vector_float4 box;
matrix_float3x3 hullMatrix;
matrix_float3x3 implicitMatrix;
float sign;
vector_float2 hullVertex;

43
src/mtl_renderer.metal
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@ -1023,9 +1023,6 @@ float2 mtl_select_hull_vertex(float2 p0, float2 p1, float2 p2, float2 p3, mtl_lo
if(fabs(det) < 1e-3 || sqrNorm0 < 0.1 || sqrNorm1 < 0.1)
{
float sqrNorm0 = length_squared(p1-p0);
float sqrNorm1 = length_squared(p2-p3);
if(sqrNorm0 < sqrNorm1)
{
pm = p2;
@ -1043,44 +1040,6 @@ float2 mtl_select_hull_vertex(float2 p0, float2 p1, float2 p2, float2 p3, mtl_lo
return(pm);
}
matrix_float3x3 mtl_hull_matrix(float2 p0, float2 p1, float2 p2, float2 p3, mtl_log_context log)
{
/*NOTE: check intersection of lines (p1-p0) and (p3-p2)
P = p0 + u(p1-p0)
P = p2 + w(p3-p2)
control points are inside a right triangle so we should always find an intersection
*/
float2 pm;
float det = (p1.x - p0.x)*(p3.y - p2.y) - (p1.y - p0.y)*(p3.x - p2.x);
float sqrNorm0 = length_squared(p1-p0);
float sqrNorm1 = length_squared(p2-p3);
if(fabs(det) < 1e-3 || sqrNorm0 < 0.1 || sqrNorm1 < 0.1)
{
float sqrNorm0 = length_squared(p1-p0);
float sqrNorm1 = length_squared(p2-p3);
if(sqrNorm0 < sqrNorm1)
{
pm = p2;
}
else
{
pm = p1;
}
}
else
{
float u = ((p0.x - p2.x)*(p2.y - p3.y) - (p0.y - p2.y)*(p2.x - p3.x))/det;
pm = p0 + u*(p1-p0);
}
matrix_float3x3 m = mtl_barycentric_matrix(p0, p3, pm);
return(m);
}
void mtl_cubic_emit(thread mtl_segment_setup_context* context, mtl_cubic_info curve, float2 p[4], float s0, float s1, float2 sp[4])
{
device mg_mtl_segment* seg = mtl_segment_push(context, sp, MG_MTL_CUBIC);
@ -1120,8 +1079,6 @@ void mtl_cubic_emit(thread mtl_segment_setup_context* context, mtl_cubic_info cu
matrix_float3x3 B = mtl_barycentric_matrix(v0, v1, v2);
seg->implicitMatrix = K*B;
seg->hullMatrix = mtl_hull_matrix(sp[0], sp[1], sp[2], sp[3], context->log);
seg->hullVertex = mtl_select_hull_vertex(sp[0], sp[1], sp[2], sp[3], context->log);
//NOTE: compute sign flip