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Slight optimization of track preview widget (the same approach as in tomato branch)

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Sergey Sharybin
2011-12-04 18:49:41 +00:00
parent 937c5494c4
commit 229dd30f37
1 changed files with 5 additions and 1 deletions
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6
source/blender/editors/interface/interface_draw.c
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@@ -1475,14 +1475,18 @@ static ImBuf *scale_trackpreview_ibuf(ImBuf *ibuf, float zoomx, float zoomy)
{
ImBuf *scaleibuf;
int x, y, w= ibuf->x*zoomx, h= ibuf->y*zoomy;
const float scalex= 1.0f/zoomx;
const float scaley= 1.0f/zoomy;
scaleibuf= IMB_allocImBuf(w, h, 32, IB_rect);
for(y= 0; y<scaleibuf->y; y++) {
for (x= 0; x<scaleibuf->x; x++) {
int pixel= scaleibuf->x*y + x;
int orig_pixel= ibuf->x*(int)(((float)y)/zoomy) + (int)(((float)x)/zoomx);
int orig_pixel= ibuf->x*(int)(scaley*(float)y) + (int)(scalex*(float)x);
char *rrgb= (char*)scaleibuf->rect + pixel*4;
char *orig_rrgb= (char*)ibuf->rect + orig_pixel*4;
rrgb[0]= orig_rrgb[0];
rrgb[1]= orig_rrgb[1];
rrgb[2]= orig_rrgb[2];