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Implement gl shadows for pure triangle alias models.

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I finally found the cause of Despair's gl shadows non-rendering+segfault...
the shadow code expected triangle fans and strips but was getting simple
triangles. Oops.
This commit is contained in:
Bill Currie 2012-07-17 16:11:42 +09:00
parent 9d1e6920d8
commit fbc0ad59df
1 changed files with 41 additions and 1 deletions
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42
libs/video/renderer/gl/gl_mod_alias.c
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@ -182,6 +182,43 @@ GL_DrawAliasFrameMulti (vert_order_t *vo)
}
}
/*
GL_DrawAliasShadowTri
Standard shadow drawing (triangles version)
*/
static void
GL_DrawAliasShadowTri (const aliashdr_t *paliashdr, const vert_order_t *vo)
{
int count = vo->count;;
const blended_vert_t *verts = vo->verts;
float height, lheight;
vec3_t point;
const vec_t *scale = paliashdr->mdl.scale;
const vec_t *scale_origin = paliashdr->mdl.scale_origin;
lheight = currententity->origin[2] - lightspot[2];
height = -lheight + 1.0;
qfglBegin (GL_TRIANGLES);
do {
// normals and vertices come from the frame list
point[0] = verts->vert[0] * scale[0] + scale_origin[0];
point[1] = verts->vert[1] * scale[1] + scale_origin[1];
point[2] = verts->vert[2] * scale[2] + scale_origin[2] + lheight;
point[0] -= shadevector[0] * point[2];
point[1] -= shadevector[1] * point[2];
point[2] = height;
qfglVertex3fv (point);
verts++;
} while (--count);
qfglEnd ();
}
/*
GL_DrawAliasShadow
@ -658,7 +695,10 @@ gl_R_DrawAliasModel (entity_t *e)
color_black[3] = model->shadow_alpha;
qfglColor4ubv (color_black);
}
GL_DrawAliasShadow (paliashdr, vo);
if (vo->tex_coord)
GL_DrawAliasShadowTri (paliashdr, vo);
else
GL_DrawAliasShadow (paliashdr, vo);
qfglDepthMask (GL_TRUE);
qfglEnable (GL_TEXTURE_2D);