funkey/RetroFE
1
0
Fork 0
mirror of https://github.com/FunKey-Project/RetroFE.git synced 2025-12-12 09:48:51 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

correct bug in pixel copy during crop in rescaling function

Browse Source 
Signed-off-by: Vincent-FK <vincent.buso@funkey-project.com>
This commit is contained in:
Vincent-FK 2020-04-20 10:07:27 +02:00
parent 574ab1ae30
commit e2951c7b8e
1 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
RetroFE/Source/SDL.cpp
View File

@ -653,10 +653,10 @@ SDL_Surface * SDL::zoomSurface(SDL_Surface *src_surface, SDL_Rect *src_rect_orig
/* Create dst surface */
dst_surface = SDL_CreateRGBSurface(src_surface->flags,
post_cropping_rect->w, post_cropping_rect->h,
src_surface->format->BitsPerPixel,
src_surface->format->Rmask, src_surface->format->Gmask,
src_surface->format->Bmask, src_surface->format->Amask);
post_cropping_rect->w, post_cropping_rect->h,
src_surface->format->BitsPerPixel,
src_surface->format->Rmask, src_surface->format->Gmask,
src_surface->format->Bmask, src_surface->format->Amask);
if(dst_surface == NULL){
printf("ERROR in %s, cannot create dst_surface for post cropping: %s\n", __func__, SDL_GetError());
dst_surface = prev_dst_surface;
@ -668,8 +668,20 @@ SDL_Surface * SDL::zoomSurface(SDL_Surface *src_surface, SDL_Rect *src_rect_orig
post_cropping_rect->x, post_cropping_rect->y, post_cropping_rect->w, post_cropping_rect->h);*/
/* Copy cropped surface */
if(SDL_BlitSurface(prev_dst_surface, post_cropping_rect, dst_surface, NULL)){
/*if(SDL_BlitSurface(prev_dst_surface, post_cropping_rect, dst_surface, NULL)){
printf("ERROR in %s, cannot blit previous dst_surface for post cropping: %s\n", __func__, SDL_GetError());
}*/
for (i = 0; i < dst_surface->h; i++)
{
/* Get current lines in src and dst surfaces */
uint8_t* t = ( (uint8_t*) dst_surface->pixels + i*dst_surface->w*dst_surface->format->BytesPerPixel );
uint8_t* p = ( (uint8_t*) prev_dst_surface->pixels +
(i+post_cropping_rect->y)*prev_dst_surface->w*prev_dst_surface->format->BytesPerPixel +
post_cropping_rect->x*prev_dst_surface->format->BytesPerPixel);
/* Copy src pixel in dst surface */
memcpy(t, p, dst_surface->w*dst_surface->format->BytesPerPixel);
}
/* Free previous surface */