diff options
Diffstat (limited to 'android/skin/scaler.c')
| -rw-r--r-- | android/skin/scaler.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/android/skin/scaler.c b/android/skin/scaler.c index 5672869..bafd84e 100644 --- a/android/skin/scaler.c +++ b/android/skin/scaler.c @@ -150,6 +150,34 @@ skin_scaler_scale( SkinScaler* scaler, else scale_generic( &op ); } + + // The optimized scale functions in argb.h assume the destination is ARGB. + // If that's not the case, do a channel reorder now. + if (dst_surface->format->Rshift != 16 || + dst_surface->format->Gshift != 8 || + dst_surface->format->Bshift != 0) + { + uint32_t rshift = dst_surface->format->Rshift; + uint32_t gshift = dst_surface->format->Gshift; + uint32_t bshift = dst_surface->format->Bshift; + uint32_t ashift = dst_surface->format->Ashift; + uint32_t amask = dst_surface->format->Amask; // may be 0x00 + int x, y; + + for (y = 0; y < op.rd.h; y++) + { + uint32_t* line = (uint32_t*)(op.dst_line + y*op.dst_pitch); + for (x = 0; x < op.rd.w; x++) { + uint32_t r = (line[x] & 0x00ff0000) >> 16; + uint32_t g = (line[x] & 0x0000ff00) >> 8; + uint32_t b = (line[x] & 0x000000ff) >> 0; + uint32_t a = (line[x] & 0xff000000) >> 24; + line[x] = (r << rshift) | (g << gshift) | (b << bshift) | + ((a << ashift) & amask); + } + } + } + SDL_UnlockSurface( dst_surface ); SDL_UnlockSurface( src_surface ); |