diff options
Diffstat (limited to 'sdl2/surface.scm')
| -rw-r--r-- | sdl2/surface.scm | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sdl2/surface.scm b/sdl2/surface.scm index bcdb588..a918bd7 100644 --- a/sdl2/surface.scm +++ b/sdl2/surface.scm @@ -63,7 +63,8 @@ surface-height surface-pitch surface-pixels - convert-surface-format)) + convert-surface-format + blit-surface)) ;;; @@ -434,3 +435,17 @@ Valid format types are: (if (null-pointer? ptr) (sdl-error "convert-surface-format" "failed to convert surface format") (wrap-surface ptr)))) + +(define (blit-surface src src-rect dst dst-rect) + "Blit the rectangle SRC-RECT from the surface SRC to DST-RECT of the +surface DST." + (unless (zero? + (ffi:sdl-blit-surface (unwrap-surface src) + (if src-rect + ((@@ (sdl2 rect) unwrap-rect) src-rect) + %null-pointer) + (unwrap-surface dst) + (if dst-rect + ((@@ (sdl2 rect) unwrap-rect) dst-rect) + %null-pointer))) + (sdl-error "blit-surface" "failed to blit surface ~a to ~a" src dst))) |