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Use bilinear interpolation for everything

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This commit is contained in:
Simon Robertshaw 2011-06-03 23:54:08 +01:00
parent 45e91c15b2
commit 41d8e316cd
1 changed files with 9 additions and 8 deletions
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17
src/graphics.c
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@ -147,7 +147,8 @@ pixel *resample_img(pixel *src, int sw, int sh, int rw, int rh)
pixel *q; pixel *q;
q = malloc(rw*rh*PIXELSIZE); q = malloc(rw*rh*PIXELSIZE);
//TODO: Actual resampling, this is just cheap nearest pixel crap //TODO: Actual resampling, this is just cheap nearest pixel crap
if(rw > sw && rh > sh){ //if(rw > sw && rh > sh){
//if(1){
float fx, fy, fyc, fxc, intp; float fx, fy, fyc, fxc, intp;
pixel tr, tl, br, bl; pixel tr, tl, br, bl;
//Bilinear interpolation for upscaling //Bilinear interpolation for upscaling
@ -168,13 +169,13 @@ pixel *resample_img(pixel *src, int sw, int sh, int rw, int rh)
(int)(((((float)PIXB(tl))*(1.0f-fxc))+(((float)PIXB(tr))*(fxc)))*(1.0f-fyc) + ((((float)PIXB(bl))*(1.0f-fxc))+(((float)PIXB(br))*(fxc)))*(fyc)) (int)(((((float)PIXB(tl))*(1.0f-fxc))+(((float)PIXB(tr))*(fxc)))*(1.0f-fyc) + ((((float)PIXB(bl))*(1.0f-fxc))+(((float)PIXB(br))*(fxc)))*(fyc))
); );
} }
} else { //} else {
for (y=0; y<rh; y++) // for (y=0; y<rh; y++)
for (x=0; x<rw; x++) // for (x=0; x<rw; x++)
{ // {
q[rw*y+x] = src[sw*(y*sh/rh)+(x*sw/rw)]; // q[rw*y+x] = src[sw*(y*sh/rh)+(x*sw/rw)];
} // }
} //}
//*qw = w; //*qw = w;
//*qh = h; //*qh = h;
return q; return q;