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rasterize: fix off by one texel error

This commit is contained in:
zeromus 2009-02-04 03:28:50 +00:00
parent 8b24e2c386
commit eca3d75efd
1 changed files with 8 additions and 8 deletions
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16
desmume/src/rasterize.cpp
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@ -169,7 +169,7 @@ FORCEINLINE int iround(float f) {
return (int)f; //lol
}
static struct
static struct Sampler
{
int width, height;
int wmask, hmask;
@ -470,7 +470,7 @@ static void triangle_from_devmaster()
if(y>=0 && y<192)
{
int xaccum = 1;
int xaccum = 0;
for(int x = minx; x < maxx; x++)
{
if(CX1 > 0 && CX2 > 0 && CX3 > 0)
@ -485,15 +485,15 @@ static void triangle_from_devmaster()
//this is just a temporary measure until we do proper clipping against the clip frustum.
//since we dont, we are receiving waaay out of bounds polys and so unless we do this we spend a lot of time calculating
//out of bounds pixels
//if(xaccum==1) {
// i_color_r.incx(); i_color_g.incx(); i_color_b.incx(); i_color_a.incx();
// i_tex_invu.incx(); i_tex_invv.incx();
// i_w.incx(); i_invw.incx();
//} else {
if(xaccum==1) {
i_color_r.incx(); i_color_g.incx(); i_color_b.incx(); i_color_a.incx();
i_tex_invu.incx(); i_tex_invv.incx();
i_w.incx(); i_invw.incx();
} else {
i_color_r.incx(xaccum); i_color_g.incx(xaccum); i_color_b.incx(xaccum); i_color_a.incx(xaccum);
i_tex_invu.incx(xaccum); i_tex_invv.incx(xaccum);
i_w.incx(xaccum); i_invw.incx(xaccum);
//}
}
xaccum = 0;