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Merge branch 'prim_mode_cullfix' into 'master'

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Fix points/lines being improperly culled

See merge request simulant/GLdc!128
This commit is contained in:
Luke Benstead 2024-10-03 05:55:30 +00:00
commit aef36f3f11
1 changed files with 15 additions and 17 deletions
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32
GL/draw.c
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@ -474,24 +474,24 @@ static GL_NO_INLINE void genPoints(Vertex* output, GLuint count) {
Vertex* src = output + count - 1;
float half_size = HALF_POINT_SIZE;
// Expands v to { v + (-S/2,S/2), v + (S/2,S/2), v + (-S/2,S/2), (S/2,-S/2) }
// Expands v to { v + (S/2,-S/2), v + (S/2,S/2), v + (-S/2,-S/2), (-S/2,S/2) }
for (; count > 0; count--, src--) {
*dst = *src;
dst->flags = GPU_CMD_VERTEX_EOL;
dst->xyz[0] -= half_size; dst->xyz[1] -= half_size;
dst--;
*dst = *src;
dst->xyz[0] += half_size; dst->xyz[1] -= half_size;
dst--;
*dst = *src;
dst->xyz[0] -= half_size; dst->xyz[1] += half_size;
dst--;
*dst = *src;
dst->xyz[0] += half_size; dst->xyz[1] += half_size;
dst--;
*dst = *src;
dst->xyz[0] -= half_size; dst->xyz[1] -= half_size;
dst--;
*dst = *src;
dst->xyz[0] += half_size; dst->xyz[1] -= half_size;
dst--;
}
}
@ -513,11 +513,10 @@ static Vertex* draw_line(Vertex* dst, Vertex* v1, Vertex* v2) {
float nx = -dy * inverse_mag;
float ny = dx * inverse_mag;
// Expand first endpoint both "up" and "down"
*dst = ov1;
*dst = ov2;
dst->flags = GPU_CMD_VERTEX_EOL;
dst->xyz[0] += nx;
dst->xyz[1] += ny;
dst->xyz[0] -= nx;
dst->xyz[1] -= ny;
dst--;
*dst = ov1;
@ -525,15 +524,14 @@ static Vertex* draw_line(Vertex* dst, Vertex* v1, Vertex* v2) {
dst->xyz[1] -= ny;
dst--;
// Expand second endpoint both "up" and "down"
*dst = ov2;
dst->xyz[0] += nx;
dst->xyz[1] += ny;
dst--;
*dst = ov2;
dst->xyz[0] -= nx;
dst->xyz[1] -= ny;
*dst = ov1;
dst->xyz[0] += nx;
dst->xyz[1] += ny;
dst--;
return dst;