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models: Add normals convert code 

Based on https://icculus.org/projects/qshed/
This commit is contained in:
Sajt 2024-01-21 23:59:06 +02:00 committed by Denis Pauk
parent b375239b61
commit 6479b41be7
2 changed files with 31 additions and 2 deletions
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32
src/client/refresh/files/mesh.c
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@ -26,10 +26,38 @@
#include "../ref_shared.h"
static float r_avertexnormals[NUMVERTEXNORMALS][3] = {
static const float r_avertexnormals[NUMVERTEXNORMALS][3] = {
#include "../constants/anorms.h"
};
/* compressed vertex normals used by mdl and md2 model formats */
byte
R_CompressNormalMDL(const float *normal)
{
byte i, besti;
float dot, bestdot;
bestdot = normal[0] * r_avertexnormals[0][0] +
normal[1] * r_avertexnormals[0][1] +
normal[2] * r_avertexnormals[0][2];
besti = 0;
for (i = 1; i < NUMVERTEXNORMALS; i++)
{
dot = normal[0] * r_avertexnormals[i][0] +
normal[1] * r_avertexnormals[i][1] +
normal[2] * r_avertexnormals[i][2];
if (dot > bestdot)
{
bestdot = dot;
besti = i;
}
}
return besti;
}
void
R_LerpVerts(qboolean powerUpEffect, int nverts, dxtrivertx_t *v, dxtrivertx_t *ov,
dxtrivertx_t *verts, float *lerp, const float move[3],
@ -41,7 +69,7 @@ R_LerpVerts(qboolean powerUpEffect, int nverts, dxtrivertx_t *v, dxtrivertx_t *o
{
for (i = 0; i < nverts; i++, v++, ov++, lerp += 4)
{
float *normal = r_avertexnormals[verts[i].lightnormalindex];
const float *normal = r_avertexnormals[verts[i].lightnormalindex];
lerp[0] = move[0] + ov->v[0] * backv[0] + v->v[0] * frontv[0] +
normal[0] * POWERSUIT_SCALE;

1
src/client/refresh/ref_shared.h
View File

@ -382,6 +382,7 @@ extern qboolean R_CullAliasMeshModel(dmdx_t *paliashdr, cplane_t *frustum,
extern void R_LerpVerts(qboolean powerUpEffect, int nverts, dxtrivertx_t *v, dxtrivertx_t *ov,
dxtrivertx_t *verts, float *lerp, const float move[3],
const float frontv[3], const float backv[3]);
extern byte R_CompressNormalMDL(const float *normal);
/* Lights logic */
extern bspxlightgrid_t *Mod_LoadBSPXLightGrid(const bspx_header_t *bspx_header, const byte *mod_base);