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Reverse the trail vertex order.

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That webgl app was designed for GL's default of CCW for front faces, but
quake wants CW. Now the disable/enable of face culling isn't necessary.
This commit is contained in:
Bill Currie 2013-02-22 19:16:42 +09:00
parent 1a06712405
commit bb022bc4fc
1 changed files with 3 additions and 7 deletions
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10
libs/video/renderer/glsl/glsl_particles.c
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@ -1745,20 +1745,20 @@ build_verts (trailvtx_t *v, GLushort *e)
if (trail->num_points < 2)
continue;
point = trail->points;
set_vertex (v++, point, 1, bary + bind++, index/2);
set_vertex (v++, point, -1, bary + bind++, index/2);
set_vertex (v++, point, 1, bary + bind++, index/2);
bind %= 3;
for (; point; point = point->next) {
set_vertex (v++, point, 1, bary + bind++, index/2 + 1);
set_vertex (v++, point, -1, bary + bind++, index/2 + 1);
set_vertex (v++, point, 1, bary + bind++, index/2 + 1);
bind %= 3;
*e++ = index++;
*e++ = index++;
last_point = point;
point->phys (point);
}
set_vertex (v++, last_point, 1, bary + bind++, index/2 + 1);
set_vertex (v++, last_point, -1, bary + bind++, index/2 + 1);
set_vertex (v++, last_point, 1, bary + bind++, index/2 + 1);
index += 4;
}
}
@ -1803,8 +1803,6 @@ draw_trails (void)
elements = alloca (num_verts * sizeof (GLushort));
build_verts (verts, elements);
qfeglDisable (GL_CULL_FACE);
qfeglUseProgram (trail.program);
qfeglEnableVertexAttribArray (trail.last.location);
qfeglEnableVertexAttribArray (trail.current.location);
@ -1845,8 +1843,6 @@ draw_trails (void)
qfeglDisableVertexAttribArray (trail.barycentric.location);
qfeglDisableVertexAttribArray (trail.texoff.location);
qfeglEnable (GL_CULL_FACE);
expire_trails ();
}