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DS GX: Add color blending

This commit is contained in:
Vicki Pfau 2017-03-14 13:12:36 -07:00
parent 3f6b8b68fc
commit e6710d0122
1 changed files with 10 additions and 1 deletions
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11
src/ds/gx.c
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@ -219,7 +219,16 @@ static bool _lerpVertex(const struct DSGXVertex* v0, const struct DSGXVertex* v1
if (!r) {
return false;
}
out->color = v0->color; // TODO
int cr0 = (v0->color) & 0x1F;
int cg0 = (v0->color >> 5) & 0x1F;
int cb0 = (v0->color >> 10) & 0x1F;
int cr1 = (v1->color) & 0x1F;
int cg1 = (v1->color >> 5) & 0x1F;
int cb1 = (v1->color >> 10) & 0x1F;
cr0 = _lerp(cr0, cr1, q, r) & 0x1F;
cg0 = _lerp(cg0, cg1, q, r) & 0x1F;
cb0 = _lerp(cb0, cb1, q, r) & 0x1F;
out->color = cr0 | (cg0 << 5) | (cb0 << 10);
out->vx = _lerp(v0->vx, v1->vx, q, r);
out->vy = _lerp(v0->vy, v1->vy, q, r);