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Optimized skyboxes a bit...and yes, it is tested. :)

This commit is contained in:
Jeff Teunissen 2000-04-06 06:26:04 +00:00
parent 8ce9970c91
commit e1dc8ce3fe
1 changed files with 14 additions and 30 deletions
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44
common/gl_warp.c
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@ -607,20 +607,11 @@ DrawSkyPolygon (int nump, vec3_t vecs) {
av[1] = fabs(v[1]);
av[2] = fabs(v[2]);
if (av[0] > av[1] && av[0] > av[2]) {
if (v[0] < 0)
axis = 1;
else
axis = 0;
axis = (v[0] < 0) ? 1 : 0;
} else if (av[1] > av[2] && av[1] > av[0]) {
if (v[1] < 0)
axis = 3;
else
axis = 2;
axis = (v[1] < 0) ? 3 : 2;
} else {
if (v[2] < 0)
axis = 5;
else
axis = 4;
axis = (v[2] < 0) ? 5 : 4;
}
// project new texture coords
@ -642,14 +633,11 @@ DrawSkyPolygon (int nump, vec3_t vecs) {
else
t = vecs[j-1] / dv;
if (s < skymins[0][axis])
skymins[0][axis] = s;
if (t < skymins[1][axis])
skymins[1][axis] = t;
if (s > skymaxs[0][axis])
skymaxs[0][axis] = s;
if (t > skymaxs[1][axis])
skymaxs[1][axis] = t;
skymins[0][axis] = min(s, skymins[0][axis]);
skymaxs[0][axis] = max(s, skymaxs[0][axis]);
skymins[1][axis] = min(t, skymins[1][axis]);
skymaxs[1][axis] = max(t, skymaxs[1][axis]);
}
}
@ -748,13 +736,11 @@ R_DrawSkyChain (msurface_t *s) {
vec3_t verts[MAX_CLIP_VERTS];
glpoly_t *p;
if (r_sky->value)
{
if (r_sky->value) {
c_sky = 0;
GL_Bind(solidskytexture);
// calculate vertex values for sky box
for (fa=s ; fa ; fa=fa->texturechain) {
for (p=fa->polys ; p ; p=p->next) {
for (i=0 ; i<p->numverts ; i++) {
@ -763,9 +749,7 @@ R_DrawSkyChain (msurface_t *s) {
ClipSkyPolygon (p->numverts, verts[0], 0);
}
}
}
else
{
} else {
GL_DisableMultitexture();
// used when gl_texsort is on
@ -781,7 +765,7 @@ R_DrawSkyChain (msurface_t *s) {
speedscale = realtime*16;
speedscale -= (int)speedscale & ~127 ;
for (fa=s ; fa ; fa=fa->texturechain)
for ( fa=s ; fa != NULL ; fa = fa->texturechain )
EmitSkyPolys (fa);
glDisable (GL_BLEND);
@ -843,8 +827,8 @@ MakeSkyVec (float s, float t, int axis) {
int skytexorder[6] = {0,2,1,3,4,5};
void
R_DrawSkyBox (void) {
R_DrawSkyBox ( void )
{
int i;
#if 0
@ -921,7 +905,7 @@ R_InitSky (texture_t *mt) {
if (!solidskytexture)
solidskytexture = texture_extension_number++;
GL_Bind (solidskytexture );
GL_Bind (solidskytexture);
glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, 128, 128, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);