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ref: gl: refactor getting edge position, texture and lightmap coords

This commit is contained in:
Alibek Omarov 2023-12-02 17:48:24 +03:00
parent 89f9b3df68
commit 08dbfc45d3
3 changed files with 58 additions and 105 deletions
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17
ref/gl/gl_decals.c
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@ -391,30 +391,15 @@ float *R_DecalVertsClip( decal_t *pDecal, msurface_t *surf, int texture, int *pV
// Generate lighting coordinates at each vertex for decal vertices v[] on surface psurf
static void R_DecalVertsLight( float *v, msurface_t *surf, int vertCount )
{
float s, t;
mtexinfo_t *tex;
mextrasurf_t *info = surf->info;
float sample_size;
int j;
sample_size = gEngfuncs.Mod_SampleSizeForFace( surf );
tex = surf->texinfo;
for( j = 0; j < vertCount; j++, v += VERTEXSIZE )
{
// lightmap texture coordinates
s = DotProduct( v, info->lmvecs[0] ) + info->lmvecs[0][3] - info->lightmapmins[0];
s += surf->light_s * sample_size;
s += sample_size * 0.5f;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( v, info->lmvecs[1] ) + info->lmvecs[1][3] - info->lightmapmins[1];
t += surf->light_t * sample_size;
t += sample_size * 0.5f;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->height;
v[5] = s;
v[6] = t;
R_LightmapCoord( v, surf, sample_size, &v[5] );
}
}

1
ref/gl/gl_local.h
View File

@ -439,6 +439,7 @@ void GL_ResetFogColor( void );
void R_GenerateVBO( void );
void R_ClearVBO( void );
void R_AddDecalVBO( decal_t *pdecal, msurface_t *surf );
void R_LightmapCoord( const vec3_t v, const msurface_t *surf, const float sample_size, vec2_t coords );
//
// gl_rpart.c

145
ref/gl/gl_rsurf.c
View File

@ -61,6 +61,52 @@ void Mod_SetOrthoBounds( const float *mins, const float *maxs )
Vector2Subtract( maxs, world_orthocenter, world_orthohalf );
}
void R_LightmapCoord( const vec3_t v, const msurface_t *surf, const float sample_size, vec2_t coords )
{
const mextrasurf_t *info = surf->info;
float s, t;
s = DotProduct( v, info->lmvecs[0] ) + info->lmvecs[0][3] - info->lightmapmins[0];
s += surf->light_s * sample_size;
s += sample_size * 0.5f;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( v, info->lmvecs[1] ) + info->lmvecs[1][3] - info->lightmapmins[1];
t += surf->light_t * sample_size;
t += sample_size * 0.5f;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
Vector2Set( coords, s, t );
}
static void R_TextureCoord( const vec3_t v, const msurface_t *surf, vec2_t coords )
{
const mtexinfo_t *info = surf->texinfo;
float s, t;
s = DotProduct( v, info->vecs[0] );
t = DotProduct( v, info->vecs[1] );
if( !FBitSet( surf->flags, SURF_DRAWTURB ))
{
s = ( s + info->vecs[0][3] ) / info->texture->width;
t = ( t + info->vecs[1][3] ) / info->texture->height;
}
Vector2Set( coords, s, t );
}
static void R_GetEdgePosition( const model_t *mod, const msurface_t *fa, int i, vec3_t vec )
{
const int lindex = mod->surfedges[fa->firstedge + i];
const medge_t *pedges = mod->edges;
if( lindex > 0 )
VectorCopy( mod->vertexes[pedges[lindex].v[0]].position, vec );
else
VectorCopy( mod->vertexes[pedges[-lindex].v[1]].position, vec );
}
static void BoundPoly( int numverts, float *verts, vec3_t mins, vec3_t maxs )
{
int i, j;
@ -81,9 +127,8 @@ static void BoundPoly( int numverts, float *verts, vec3_t mins, vec3_t maxs )
static void SubdividePolygon_r( model_t *loadmodel, msurface_t *warpface, int numverts, float *verts )
{
vec3_t front[SUBDIVIDE_SIZE], back[SUBDIVIDE_SIZE];
mextrasurf_t *warpinfo = warpface->info;
float dist[SUBDIVIDE_SIZE];
float m, frac, s, t, *v;
float m, frac, *v;
int i, j, k, f, b;
float sample_size;
vec3_t mins, maxs;
@ -160,41 +205,13 @@ static void SubdividePolygon_r( model_t *loadmodel, msurface_t *warpface, int nu
for( i = 0; i < numverts; i++, verts += 3 )
{
VectorCopy( verts, poly->verts[i] );
if( FBitSet( warpface->flags, SURF_DRAWTURB ))
{
s = DotProduct( verts, warpface->texinfo->vecs[0] );
t = DotProduct( verts, warpface->texinfo->vecs[1] );
}
else
{
s = DotProduct( verts, warpface->texinfo->vecs[0] ) + warpface->texinfo->vecs[0][3];
t = DotProduct( verts, warpface->texinfo->vecs[1] ) + warpface->texinfo->vecs[1][3];
s /= warpface->texinfo->texture->width;
t /= warpface->texinfo->texture->height;
}
poly->verts[i][3] = s;
poly->verts[i][4] = t;
R_TextureCoord( verts, warpface, &poly->verts[i][3] );
// for speed reasons
if( !FBitSet( warpface->flags, SURF_DRAWTURB ))
{
// lightmap texture coordinates
s = DotProduct( verts, warpinfo->lmvecs[0] ) + warpinfo->lmvecs[0][3];
s -= warpinfo->lightmapmins[0];
s += warpface->light_s * sample_size;
s += sample_size * 0.5f;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( verts, warpinfo->lmvecs[1] ) + warpinfo->lmvecs[1][3];
t -= warpinfo->lightmapmins[1];
t += warpface->light_t * sample_size;
t += sample_size * 0.5f;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->height;
poly->verts[i][5] = s;
poly->verts[i][6] = t;
R_LightmapCoord( verts, warpface, sample_size, &poly->verts[i][5] );
}
}
}
@ -240,26 +257,16 @@ can be done reasonably.
void GL_SubdivideSurface( model_t *loadmodel, msurface_t *fa )
{
vec3_t verts[SUBDIVIDE_SIZE];
int numverts;
int i, lindex;
float *vec;
int i;
// convert edges back to a normal polygon
numverts = 0;
for( i = 0; i < fa->numedges; i++ )
{
lindex = loadmodel->surfedges[fa->firstedge + i];
if( lindex > 0 ) vec = loadmodel->vertexes[loadmodel->edges[lindex].v[0]].position;
else vec = loadmodel->vertexes[loadmodel->edges[-lindex].v[1]].position;
VectorCopy( vec, verts[numverts] );
numverts++;
}
R_GetEdgePosition( loadmodel, fa, i, verts[i] );
SetBits( fa->flags, SURF_DRAWTURB_QUADS ); // predict state
// do subdivide
SubdividePolygon_r( loadmodel, fa, numverts, verts[0] );
SubdividePolygon_r( loadmodel, fa, fa->numedges, verts[0] );
}
/*
@ -269,14 +276,10 @@ GL_BuildPolygonFromSurface
*/
void GL_BuildPolygonFromSurface( model_t *mod, msurface_t *fa )
{
int i, lindex, lnumverts;
medge_t *pedges, *r_pedge;
mextrasurf_t *info = fa->info;
int i, lnumverts;
float sample_size;
texture_t *tex;
gl_texture_t *glt;
float *vec;
float s, t;
glpoly_t *poly;
if( !mod || !fa->texinfo || !fa->texinfo->texture )
@ -296,7 +299,6 @@ void GL_BuildPolygonFromSurface( model_t *mod, msurface_t *fa )
sample_size = gEngfuncs.Mod_SampleSizeForFace( fa );
// reconstruct the polygon
pedges = mod->edges;
lnumverts = fa->numedges;
// detach if already created, reconstruct again
@ -312,44 +314,9 @@ void GL_BuildPolygonFromSurface( model_t *mod, msurface_t *fa )
for( i = 0; i < lnumverts; i++ )
{
lindex = mod->surfedges[fa->firstedge + i];
if( lindex > 0 )
{
r_pedge = &pedges[lindex];
vec = mod->vertexes[r_pedge->v[0]].position;
}
else
{
r_pedge = &pedges[-lindex];
vec = mod->vertexes[r_pedge->v[1]].position;
}
s = DotProduct( vec, fa->texinfo->vecs[0] ) + fa->texinfo->vecs[0][3];
s /= fa->texinfo->texture->width;
t = DotProduct( vec, fa->texinfo->vecs[1] ) + fa->texinfo->vecs[1][3];
t /= fa->texinfo->texture->height;
VectorCopy( vec, poly->verts[i] );
poly->verts[i][3] = s;
poly->verts[i][4] = t;
// lightmap texture coordinates
s = DotProduct( vec, info->lmvecs[0] ) + info->lmvecs[0][3];
s -= info->lightmapmins[0];
s += fa->light_s * sample_size;
s += sample_size * 0.5f;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( vec, info->lmvecs[1] ) + info->lmvecs[1][3];
t -= info->lightmapmins[1];
t += fa->light_t * sample_size;
t += sample_size * 0.5f;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->height;
poly->verts[i][5] = s;
poly->verts[i][6] = t;
R_GetEdgePosition( mod, fa, i, poly->verts[i] );
R_TextureCoord( poly->verts[i], fa, &poly->verts[i][3] );
R_LightmapCoord( poly->verts[i], fa, sample_size, &poly->verts[i][5] );
}
// remove co-linear points - Ed