/*
* CG_AddBlobShadow
*
* Ok, to not use decals space we need these arrays to store the
* polygons info. We do not need the linked list nor registration
*/
static void CG_AddBlobShadow( vec3_t origin, vec3_t dir, float orient, float radius,
float r, float g, float b, float a, cgshadebox_t *shadeBox )
{
int i, j, c, nverts;
vec3_t axis[3];
byte_vec4_t color;
fragment_t *fr, fragments[MAX_BLOBSHADOW_FRAGMENTS];
int numfragments;
poly_t poly;
vec4_t verts[MAX_BLOBSHADOW_VERTS];
if( radius <= 0 || VectorCompare( dir, vec3_origin ) )
return; // invalid
// calculate orientation matrix
VectorNormalize2( dir, axis[0] );
PerpendicularVector( axis[1], axis[0] );
RotatePointAroundVector( axis[2], axis[0], axis[1], orient );
CrossProduct( axis[0], axis[2], axis[1] );
numfragments = trap_R_GetClippedFragments( origin, radius, axis, // clip it
MAX_BLOBSHADOW_VERTS, verts, MAX_BLOBSHADOW_FRAGMENTS, fragments );
// no valid fragments
if( !numfragments )
return;
// clamp and scale colors
if( r < 0 ) r = 0;else if( r > 1 ) r = 255;else r *= 255;
if( g < 0 ) g = 0;else if( g > 1 ) g = 255;else g *= 255;
if( b < 0 ) b = 0;else if( b > 1 ) b = 255;else b *= 255;
if( a < 0 ) a = 0;else if( a > 1 ) a = 255;else a *= 255;
color[0] = ( qbyte )( r );
color[1] = ( qbyte )( g );
color[2] = ( qbyte )( b );
color[3] = ( qbyte )( a );
c = *( int * )color;
radius = 0.5f / radius;
VectorScale( axis[1], radius, axis[1] );
VectorScale( axis[2], radius, axis[2] );
memset( &poly, 0, sizeof( poly ) );
for( i = 0, nverts = 0, fr = fragments; i < numfragments; i++, fr++ )
{
if( nverts+fr->numverts > MAX_BLOBSHADOW_VERTS )
return;
if( fr->numverts <= 0 )
continue;
poly.shader = shadeBox->shader;
poly.verts = &shadeBox->verts[nverts];
poly.normals = &shadeBox->norms[nverts];
poly.stcoords = &shadeBox->stcoords[nverts];
poly.colors = &shadeBox->colors[nverts];
poly.numverts = fr->numverts;
poly.fognum = fr->fognum;
nverts += fr->numverts;
for( j = 0; j < fr->numverts; j++ )
{
vec3_t v;
Vector4Copy( verts[fr->firstvert+j], poly.verts[j] );
VectorCopy( axis[0], poly.normals[j] ); poly.normals[j][3] = 0;
VectorSubtract( poly.verts[j], origin, v );
poly.stcoords[j][0] = DotProduct( v, axis[1] ) + 0.5f;
poly.stcoords[j][1] = DotProduct( v, axis[2] ) + 0.5f;
*( int * )poly.colors[j] = c;
}
trap_R_AddPolyToScene( &poly );
}
}
/*
* CG_AddFragmentedDecal
*/
void CG_AddFragmentedDecal( vec3_t origin, vec3_t dir, float orient, float radius,
float r, float g, float b, float a, struct shader_s *shader ) {
int i, j, c;
vec3_t axis[3];
byte_vec4_t color;
fragment_t *fr, fragments[MAX_TEMPDECAL_FRAGMENTS];
int numfragments;
poly_t poly;
vec4_t verts[MAX_BLOBSHADOW_VERTS];
static vec4_t t_verts[MAX_TEMPDECAL_VERTS * MAX_TEMPDECALS];
static vec4_t t_norms[MAX_TEMPDECAL_VERTS * MAX_TEMPDECALS];
static vec2_t t_stcoords[MAX_TEMPDECAL_VERTS * MAX_TEMPDECALS];
static byte_vec4_t t_colors[MAX_TEMPDECAL_VERTS * MAX_TEMPDECALS];
if( radius <= 0 || VectorCompare( dir, vec3_origin ) ) {
return; // invalid
}
// calculate orientation matrix
VectorNormalize2( dir, axis[0] );
PerpendicularVector( axis[1], axis[0] );
RotatePointAroundVector( axis[2], axis[0], axis[1], orient );
CrossProduct( axis[0], axis[2], axis[1] );
numfragments = trap_R_GetClippedFragments( origin, radius, axis, // clip it
MAX_BLOBSHADOW_VERTS, verts, MAX_TEMPDECAL_FRAGMENTS, fragments );
// no valid fragments
if( !numfragments ) {
return;
}
// clamp and scale colors
if( r < 0 ) {
r = 0;
} else if( r > 1 ) {
r = 255;
} else {
r *= 255;
}
if( g < 0 ) {
g = 0;
} else if( g > 1 ) {
g = 255;
} else {
g *= 255;
}
if( b < 0 ) {
b = 0;
} else if( b > 1 ) {
b = 255;
} else {
b *= 255;
}
if( a < 0 ) {
a = 0;
} else if( a > 1 ) {
a = 255;
} else {
a *= 255;
}
color[0] = ( uint8_t )( r );
color[1] = ( uint8_t )( g );
color[2] = ( uint8_t )( b );
color[3] = ( uint8_t )( a );
c = *( int * )color;
radius = 0.5f / radius;
VectorScale( axis[1], radius, axis[1] );
VectorScale( axis[2], radius, axis[2] );
memset( &poly, 0, sizeof( poly ) );
for( i = 0, fr = fragments; i < numfragments; i++, fr++ ) {
if( fr->numverts <= 0 ) {
continue;
}
if( cg_numDecalVerts + (unsigned)fr->numverts > sizeof( t_verts ) / sizeof( t_verts[0] ) ) {
return;
}
poly.shader = shader;
poly.verts = &t_verts[cg_numDecalVerts];
poly.normals = &t_norms[cg_numDecalVerts];
poly.stcoords = &t_stcoords[cg_numDecalVerts];
poly.colors = &t_colors[cg_numDecalVerts];
poly.numverts = fr->numverts;
poly.fognum = fr->fognum;
cg_numDecalVerts += (unsigned)fr->numverts;
for( j = 0; j < fr->numverts; j++ ) {
vec3_t v;
Vector4Copy( verts[fr->firstvert + j], poly.verts[j] );
VectorCopy( axis[0], poly.normals[j] ); poly.normals[j][3] = 0;
VectorSubtract( poly.verts[j], origin, v );
poly.stcoords[j][0] = DotProduct( v, axis[1] ) + 0.5f;
poly.stcoords[j][1] = DotProduct( v, axis[2] ) + 0.5f;
*( int * )poly.colors[j] = c;
}
trap_R_AddPolyToScene( &poly );
}
}
/*
* CG_SpawnDecal
*/
void CG_SpawnDecal( vec3_t origin, vec3_t dir, float orient, float radius,
float r, float g, float b, float a, float die, float fadetime, bool fadealpha, struct shader_s *shader )
{
int i, j;
cdecal_t *dl;
poly_t *poly;
vec3_t axis[3];
vec3_t verts[MAX_DECAL_VERTS];
vec3_t v;
byte_vec4_t color;
fragment_t *fr, fragments[MAX_DECAL_FRAGMENTS];
int numfragments;
float dietime, fadefreq;
if( !cg_addDecals->integer )
return;
// invalid decal
if( radius <= 0 || VectorCompare( dir, vec3_origin ) )
return;
// we don't spawn decals if too far away (we could move there, but players won't notice there should be a decal by then)
if( DistanceFast( origin, cg.view.origin ) * cg.view.fracDistFOV > 2048 )
return;
// calculate orientation matrix
VectorNormalize2( dir, axis[0] );
PerpendicularVector( axis[1], axis[0] );
RotatePointAroundVector( axis[2], axis[0], axis[1], orient );
CrossProduct( axis[0], axis[2], axis[1] );
numfragments = trap_R_GetClippedFragments( origin, radius, axis, // clip it
MAX_DECAL_VERTS, verts, MAX_DECAL_FRAGMENTS, fragments );
// no valid fragments
if( !numfragments )
return;
// clamp and scale colors
if( r < 0 ) r = 0;else if( r > 1 ) r = 255;else r *= 255;
if( g < 0 ) g = 0;else if( g > 1 ) g = 255;else g *= 255;
if( b < 0 ) b = 0;else if( b > 1 ) b = 255;else b *= 255;
if( a < 0 ) a = 0;else if( a > 1 ) a = 255;else a *= 255;
color[0] = ( qbyte )( r );
color[1] = ( qbyte )( g );
color[2] = ( qbyte )( b );
color[3] = ( qbyte )( a );
radius = 0.5f / radius;
VectorScale( axis[1], radius, axis[1] );
VectorScale( axis[2], radius, axis[2] );
dietime = cg.time + die * 1000;
fadefreq = 0.001f / min( fadetime, die );
fadetime = cg.time + ( die - min( fadetime, die ) ) * 1000;
for( i = 0, fr = fragments; i < numfragments; i++, fr++ )
{
if( fr->numverts > MAX_DECAL_VERTS )
return;
else if( fr->numverts <= 0 )
continue;
// allocate decal
dl = CG_AllocDecal();
dl->die = dietime;
dl->fadetime = fadetime;
dl->fadefreq = fadefreq;
dl->fadealpha = fadealpha;
dl->shader = shader;
dl->color[0] = r;
dl->color[1] = g;
dl->color[2] = b;
dl->color[3] = a;
// setup polygon for drawing
poly = dl->poly;
poly->shader = shader;
poly->numverts = fr->numverts;
poly->fognum = fr->fognum;
for( j = 0; j < fr->numverts; j++ )
{
VectorCopy( verts[fr->firstvert+j], poly->verts[j] );
VectorCopy( fr->normal, poly->normals[j] );
VectorSubtract( poly->verts[j], origin, v );
poly->stcoords[j][0] = DotProduct( v, axis[1] ) + 0.5f;
poly->stcoords[j][1] = DotProduct( v, axis[2] ) + 0.5f;
*( int * )poly->colors[j] = *( int * )color;
}
}
}