MrMonopoly/raylib
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tweak lerp vertex function

Browse Source
This commit is contained in:
Bigfoot71 2025-05-10 23:25:13 +02:00
parent f0d8653d07
commit d98f229814
1 changed files with 25 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/external/rlsw.h vendored
View File

@ -775,9 +775,31 @@ static inline float sw_lerp(float a, float b, float t)
static inline sw_vertex_t sw_lerp_vertex_PNTCH(const sw_vertex_t* a, const sw_vertex_t* b, float t)
{
sw_vertex_t result;
for (int i = 0; i < offsetof(sw_vertex_t, screen) / sizeof(float); i++) {
((float*)&result)[i] = sw_lerp(((float*)a)[i], ((float*)b)[i], t);
}
const float tInv = 1.0f - t;
// Position interpolation (4 components)
result.position[0] = a->position[0] * tInv + b->position[0] * t;
result.position[1] = a->position[1] * tInv + b->position[1] * t;
result.position[2] = a->position[2] * tInv + b->position[2] * t;
result.position[3] = a->position[3] * tInv + b->position[3] * t;
// Texture coordinate interpolation (2 components)
result.texcoord[0] = a->texcoord[0] * tInv + b->texcoord[0] * t;
result.texcoord[1] = a->texcoord[1] * tInv + b->texcoord[1] * t;
// Color interpolation (4 components)
result.color[0] = a->color[0] * tInv + b->color[0] * t;
result.color[1] = a->color[1] * tInv + b->color[1] * t;
result.color[2] = a->color[2] * tInv + b->color[2] * t;
result.color[3] = a->color[3] * tInv + b->color[3] * t;
// Homogeneous coordinate interpolation (4 components)
result.homogeneous[0] = a->homogeneous[0] * tInv + b->homogeneous[0] * t;
result.homogeneous[1] = a->homogeneous[1] * tInv + b->homogeneous[1] * t;
result.homogeneous[2] = a->homogeneous[2] * tInv + b->homogeneous[2] * t;
result.homogeneous[3] = a->homogeneous[3] * tInv + b->homogeneous[3] * t;
return result;
}