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Added a fast path for converting the same format and pitch

This commit is contained in:
Sam Lantinga 2025-02-19 22:36:13 -08:00
parent f24f9d3bed
commit 9267930fea
1 changed files with 11 additions and 7 deletions
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18
src/video/SDL_surface.c
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@ -2298,13 +2298,17 @@ bool SDL_ConvertPixelsAndColorspace(int width, int height,
// Fast path for same format copy // Fast path for same format copy
if (src_format == dst_format && src_colorspace == dst_colorspace) { if (src_format == dst_format && src_colorspace == dst_colorspace) {
int i; if (src_pitch == dst_pitch) {
const int bpp = SDL_BYTESPERPIXEL(src_format); SDL_memcpy(dst, src, height * src_pitch);
width *= bpp; } else {
for (i = height; i--;) { int i;
SDL_memcpy(dst, src, width); const int bpp = SDL_BYTESPERPIXEL(src_format);
src = (const Uint8 *)src + src_pitch; width *= bpp;
dst = (Uint8 *)dst + dst_pitch; for (i = height; i--;) {
SDL_memcpy(dst, src, width);
src = (const Uint8 *)src + src_pitch;
dst = (Uint8 *)dst + dst_pitch;
}
} }
return true; return true;
} }