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TINYGL: Fixed a bug with triangle strip rendering.

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This commit is contained in:
Stefano Musumeci 2014-08-11 17:24:21 +02:00
parent 1990876f7a
commit 5cd3cfe548
1 changed files with 12 additions and 3 deletions
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15
graphics/tinygl/zdirtyrect.cpp
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@ -352,9 +352,18 @@ void RasterizationDrawCall::execute(bool restoreState) const {
}
break;
case TGL_TRIANGLE_STRIP:
for(int i = 0; i < cnt; i += 2) {
gl_draw_triangle(c, &c->vertex[i], &c->vertex[i + 1], &c->vertex[i + 2]);
gl_draw_triangle(c, &c->vertex[i + 2], &c->vertex[i + 1], &c->vertex[i + 3]);
while (cnt >= 3) {
// needed to respect triangle orientation
switch (cnt & 1) {
case 0:
gl_draw_triangle(c, &c->vertex[2], &c->vertex[1], &c->vertex[0]);
break;
case 1:
gl_draw_triangle(c, &c->vertex[0], &c->vertex[1], &c->vertex[2]);
break;
}
cnt--;
c->vertex++;
}
break;
case TGL_TRIANGLE_FAN: