ioquake/ioq3
0
0
Fork 0
mirror of https://github.com/ioquake/ioq3.git synced 2024-11-10 07:11:46 +00:00
Code Issues Projects Releases Packages Wiki Activity

* Implementation of r_dlightBacks from Shane Isley

Browse source
This commit is contained in:
Tim Angus 2005-11-15 23:30:35 +00:00
parent 47c70ae076
commit b5c7d9dcd7
1 changed files with 60 additions and 68 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

128
code/renderer/tr_shade.c
View file

@ -473,54 +473,73 @@ static void ProjectDlightTexture( void ) {
floatColorVec0 = vec_perm(floatColorVec0,floatColorVec0,floatColorVecPerm);
#endif
for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
int clip = 0;
#if idppc_altivec
#define DIST0 dist0
#define DIST1 dist1
#define DIST2 dist2
#define TEXCOORDS0 texCoords0
#define TEXCOORDS1 texCoords1
vec_t dist0, dist1, dist2;
#else
vec3_t dist;
#endif
int clip;
backEnd.pc.c_dlightVertexes++;
#if idppc_altivec
//VectorSubtract( origin, tess.xyz[i], dist );
dist0 = origin0 - tess.xyz[i][0];
dist1 = origin1 - tess.xyz[i][1];
dist2 = origin2 - tess.xyz[i][2];
texCoords0 = 0.5f + dist0 * scale;
texCoords1 = 0.5f + dist1 * scale;
clip = 0;
if ( texCoords0 < 0.0f ) {
clip |= 1;
} else if ( texCoords0 > 1.0f ) {
clip |= 2;
}
if ( texCoords1 < 0.0f ) {
clip |= 4;
} else if ( texCoords1 > 1.0f ) {
clip |= 8;
}
texCoords[0] = texCoords0;
texCoords[1] = texCoords1;
#else
#define DIST0 dist[0]
#define DIST1 dist[1]
#define DIST2 dist[2]
#define TEXCOORDS0 texCoords[0]
#define TEXCOORDS1 texCoords[1]
vec3_t dist;
// modulate the strength based on the height and color
if ( dist2 > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( dist2 < -radius ) {
clip |= 32;
modulate = 0.0f;
VectorSubtract( origin, tess.xyz[i], dist );
#endif
backEnd.pc.c_dlightVertexes++;
TEXCOORDS0 = 0.5f + DIST0 * scale;
TEXCOORDS1 = 0.5f + DIST1 * scale;
if( !r_dlightBacks->integer &&
// dist . tess.normal[i]
( DIST0 * tess.normal[i][0] +
DIST1 * tess.normal[i][1] +
DIST2 * tess.normal[i][2] ) < 0.0f ) {
clip = 63;
} else {
dist2 = Q_fabs(dist2);
if ( dist2 < radius * 0.5f ) {
modulate = 1.0f;
if ( TEXCOORDS0 < 0.0f ) {
clip |= 1;
} else if ( TEXCOORDS0 > 1.0f ) {
clip |= 2;
}
if ( TEXCOORDS1 < 0.0f ) {
clip |= 4;
} else if ( TEXCOORDS1 > 1.0f ) {
clip |= 8;
}
texCoords[0] = TEXCOORDS0;
texCoords[1] = TEXCOORDS1;
// modulate the strength based on the height and color
if ( DIST2 > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( DIST2 < -radius ) {
clip |= 32;
modulate = 0.0f;
} else {
modulate = 2.0f * (radius - dist2) * scale;
DIST2 = Q_fabs(DIST2);
if ( DIST2 < radius * 0.5f ) {
modulate = 1.0f;
} else {
modulate = 2.0f * (radius - DIST2) * scale;
}
}
}
clipBits[i] = clip;
#if idppc_altivec
modulateVec = vec_ld(0,(float *)&modulate);
modulateVec = vec_perm(modulateVec,modulateVec,modulatePerm);
colorVec = vec_madd(floatColorVec0,modulateVec,zero);
@ -530,44 +549,17 @@ static void ProjectDlightTexture( void ) {
colorChar = vec_sel(colorChar,vSel,vSel); // RGBARGBARGBARGBA replace alpha with 255
vec_ste((vector unsigned int)colorChar,0,(unsigned int *)colors); // store color
#else
VectorSubtract( origin, tess.xyz[i], dist );
texCoords[0] = 0.5f + dist[0] * scale;
texCoords[1] = 0.5f + dist[1] * scale;
clip = 0;
if ( texCoords[0] < 0.0f ) {
clip |= 1;
} else if ( texCoords[0] > 1.0f ) {
clip |= 2;
}
if ( texCoords[1] < 0.0f ) {
clip |= 4;
} else if ( texCoords[1] > 1.0f ) {
clip |= 8;
}
// modulate the strength based on the height and color
if ( dist[2] > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( dist[2] < -radius ) {
clip |= 32;
modulate = 0.0f;
} else {
dist[2] = Q_fabs(dist[2]);
if ( dist[2] < radius * 0.5f ) {
modulate = 1.0f;
} else {
modulate = 2.0f * (radius - dist[2]) * scale;
}
}
clipBits[i] = clip;
colors[0] = myftol(floatColor[0] * modulate);
colors[1] = myftol(floatColor[1] * modulate);
colors[2] = myftol(floatColor[2] * modulate);
colors[3] = 255;
#endif
}
#undef DIST0
#undef DIST1
#undef DIST2
#undef TEXCOORDS0
#undef TEXCOORDS1
// build a list of triangles that need light
numIndexes = 0;