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gl_sky_clip is getting closer to working with skybox. Textures are borked (not

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sure if I'm doing something wrong or if gl is having problems with the scale)
and clipping is a little wonky, but I know the reason for that:) Also, it
seems skys aren't always being drawn: probably something wrong in gl_rsurf.
This commit is contained in:
Bill Currie 2000-11-10 16:26:40 +00:00
parent 1d4c83b5bb
commit 7bd99717d2
2 changed files with 72 additions and 19 deletions
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6
source/gl_rsurf.c
View file

@ -931,15 +931,15 @@ void R_RecursiveWorldNode (mnode_t *node)
if (surf->visframe != r_framecount)
continue;
if ((dot < 0) ^ !!(surf->flags & SURF_PLANEBACK))
continue; // wrong side
if (surf->flags & SURF_DRAWSKY) {
surf->texturechain = sky_chain;
sky_chain = surf;
continue;
}
if ((dot < 0) ^ !!(surf->flags & SURF_PLANEBACK))
continue; // wrong side
if (surf->flags & SURF_DRAWTURB)
{
surf->texturechain = waterchain;

85
source/gl_sky.c
View file

@ -115,42 +115,42 @@ R_SkyBoxPolyVec (vec5_t v)
vec5_t skyvec[6][4] = {
{
// right
// right +y
{ftc (1), ftc (0), 1024, 1024, 1024},
{ftc (1), ftc (1), 1024, 1024, -1024},
{ftc (0), ftc (1), -1024, 1024, -1024},
{ftc (0), ftc (0), -1024, 1024, 1024}
},
{
// back
// back -x
{ftc (1), ftc (0), -1024, 1024, 1024},
{ftc (1), ftc (1), -1024, 1024, -1024},
{ftc (0), ftc (1), -1024, -1024, -1024},
{ftc (0), ftc (0), -1024, -1024, 1024}
},
{
// left
// left -y
{ftc (1), ftc (0), -1024, -1024, 1024},
{ftc (1), ftc (1), -1024, -1024, -1024},
{ftc (0), ftc (1), 1024, -1024, -1024},
{ftc (0), ftc (0), 1024, -1024, 1024}
},
{
// front
// front +x
{ftc (1), ftc (0), 1024, -1024, 1024},
{ftc (1), ftc (1), 1024, -1024, -1024},
{ftc (0), ftc (1), 1024, 1024, -1024},
{ftc (0), ftc (0), 1024, 1024, 1024}
},
{
// up
// up +z
{ftc (1), ftc (0), 1024, -1024, 1024},
{ftc (1), ftc (1), 1024, 1024, 1024},
{ftc (0), ftc (1), -1024, 1024, 1024},
{ftc (0), ftc (0), -1024, -1024, 1024}
},
{
// down
// down -z
{ftc (1), ftc (0), 1024, 1024, -1024},
{ftc (1), ftc (1), 1024, -1024, -1024},
{ftc (0), ftc (1), -1024, -1024, -1024},
@ -305,19 +305,59 @@ determine_face (vec3_t v)
return i;
}
static void
set_vertex (glpoly_t *p, vec3_t v, int face)
{
int ind = p->numverts++;
VectorCopy (v, p->verts[ind]);
VectorAdd (v, r_refdef.vieworg, p->verts[ind]);
switch (face) {
case 0:
p->verts[ind][3] = (1024 - v[1]) / 2048;
p->verts[ind][4] = (1024 - v[2]) / 2048;
break;
case 1:
p->verts[ind][3] = (1024 + v[0]) / 2048;
p->verts[ind][4] = (1024 - v[2]) / 2048;
break;
case 2:
p->verts[ind][3] = (1024 + v[0]) / 2048;
p->verts[ind][4] = (1024 + v[1]) / 2048;
break;
case 4:
p->verts[ind][3] = (1024 + v[1]) / 2048;
p->verts[ind][4] = (1024 - v[2]) / 2048;
break;
case 5:
p->verts[ind][3] = (1024 - v[0]) / 2048;
p->verts[ind][4] = (1024 - v[2]) / 2048;
break;
case 6:
p->verts[ind][3] = (1024 - v[0]) / 2048;
p->verts[ind][4] = (1024 - v[1]) / 2048;
break;
}
}
void
R_DrawSkyBoxPoly (glpoly_t *poly)
{
vec3_t v, last_v;
struct {
int tex;
glpoly_t poly;
float verts[32][VERTEXSIZE];
} box[6];
glpoly_t *p;
int i;
int i, j;
int face, prev_face;
memset (box, 0, sizeof (box));
box[0].tex = SKY_TEX + 0;
box[1].tex = SKY_TEX + 1;
box[2].tex = SKY_TEX + 2;
box[3].tex = SKY_TEX + 3;
box[4].tex = SKY_TEX + 4;
box[5].tex = SKY_TEX + 5;
if (poly->numverts>=32) {
Con_Printf ("too many verts!");
abort();
@ -325,7 +365,6 @@ R_DrawSkyBoxPoly (glpoly_t *poly)
VectorSubtract (poly->verts[poly->numverts - 1], r_refdef.vieworg, v);
prev_face = determine_face (v);
p = &box[prev_face].poly;
VectorCopy (v, last_v);
for (i=0; i< poly->numverts; i++) {
@ -339,18 +378,28 @@ R_DrawSkyBoxPoly (glpoly_t *poly)
VectorSubtract (v, last_v, l);
l[prev_face % 3] = 0;
VectorAdd (last_v, l, l);
p = &box[prev_face].poly;
VectorCopy (l, p->verts[p->numverts++]);
p = &box[face].poly;
VectorCopy (l, p->verts[p->numverts++]);
set_vertex(&box[prev_face].poly, l, prev_face);
set_vertex(&box[face].poly, l, face);
}
}
p = &box[face].poly;
VectorCopy (v, p->verts[p->numverts++]);
set_vertex(&box[face].poly, v, face);
VectorCopy (v, last_v);
prev_face = face;
}
for (i = 0; i < 6; i++) {
if (box[i].poly.numverts < 2)
continue;
glBegin (GL_POLYGON);
glBindTexture (GL_TEXTURE_2D, box[i].tex);
for (j=0; j < box[i].poly.numverts; j++) {
glTexCoord2fv (box[i].poly.verts[j]+3);
glVertex3fv (box[i].poly.verts[j]);
}
glEnd ();
}
}
void
@ -375,7 +424,11 @@ R_DrawSkyChain (msurface_t *sky_chain)
{
if (skyloaded) {
while (sky_chain) {
R_DrawSkyBoxPoly (sky_chain->polys);
glpoly_t *p = sky_chain->polys;
while (p) {
R_DrawSkyBoxPoly (p);
p = p->next;
}
sky_chain = sky_chain->texturechain;
}
} else {