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DS GX: Clean up box test

This commit is contained in:
Vicki Pfau 2017-03-24 12:44:52 -07:00
parent 68a0b5f48e
commit 938c2f84b8
1 changed files with 5 additions and 28 deletions
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33
src/ds/gx.c
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@ -539,35 +539,12 @@ static void _flushOutstanding(struct DSGX* gx) {
}
static bool _boxTestVertex(struct DSGX* gx, struct DSGXVertex* vertex) {
int32_t vx = _dotViewport(vertex, &gx->clipMatrix.m[0]);
int32_t vy = _dotViewport(vertex, &gx->clipMatrix.m[1]);
int32_t vz = _dotViewport(vertex, &gx->clipMatrix.m[2]);
int32_t vw = _dotViewport(vertex, &gx->clipMatrix.m[3]);
vertex->viewCoord[0] = _dotViewport(vertex, &gx->clipMatrix.m[0]);
vertex->viewCoord[1] = _dotViewport(vertex, &gx->clipMatrix.m[1]);
vertex->viewCoord[2] = _dotViewport(vertex, &gx->clipMatrix.m[2]);
vertex->viewCoord[3] = _dotViewport(vertex, &gx->clipMatrix.m[3]);
vx = (vx + vw) * (int64_t) (gx->viewportWidth << 12) / (vw * 2) + (gx->viewportX1 << 12);
vy = (vy + vw) * (int64_t) (gx->viewportHeight << 12) / (vw * 2) + (gx->viewportY1 << 12);
vx >>= 12;
vy >>= 12;
if (vx < gx->viewportX1) {
return false;
}
if (vx > gx->viewportX2) {
return false;
}
if (vy < gx->viewportY1) {
return false;
}
if (vy > gx->viewportY2) {
return false;
}
if (vz < -vw) {
return false;
}
if (vz > vw) {
return false;
}
return true;
return !_cohenSutherlandCode(vertex);
}
static bool _boxTest(struct DSGX* gx) {