diff options
| -rw-r--r-- | doc/api.texi | 7 | ||||
| -rw-r--r-- | sdl2/bindings.scm | 3 | ||||
| -rw-r--r-- | sdl2/surface.scm | 17 |
3 files changed, 26 insertions, 1 deletions
diff --git a/doc/api.texi b/doc/api.texi index f09cdfd..7e47fd7 100644 --- a/doc/api.texi +++ b/doc/api.texi @@ -994,6 +994,13 @@ Blit the rectangle @var{src-rect} from the surface @var{src} to @var{dst-rect} of the surface @var{dst}. @end deffn +@deffn {Procedure} blit-scaled @var{src} @var{src-rect} @var{dst} @var{dst-rect} +Blit the rectangle @var{src-rect} from the surface @var{src} to +@var{dst-rect} of the surface @var{dst}, scaling the source to fit the +destination. +@end deffn + + @node Rendering @section Rendering diff --git a/sdl2/bindings.scm b/sdl2/bindings.scm index 7c16abb..1f97186 100644 --- a/sdl2/bindings.scm +++ b/sdl2/bindings.scm @@ -946,6 +946,9 @@ RETURN-TYPE and accept arguments of ARG-TYPES." (define-foreign sdl-blit-surface int "SDL_UpperBlit" '(* * * *)) +(define-foreign sdl-blit-scaled + int "SDL_UpperBlitScaled" '(* * * *)) + ;;; ;;; Audio diff --git a/sdl2/surface.scm b/sdl2/surface.scm index a918bd7..3770a17 100644 --- a/sdl2/surface.scm +++ b/sdl2/surface.scm @@ -64,7 +64,8 @@ surface-pitch surface-pixels convert-surface-format - blit-surface)) + blit-surface + blit-scaled)) ;;; @@ -449,3 +450,17 @@ surface DST." ((@@ (sdl2 rect) unwrap-rect) dst-rect) %null-pointer))) (sdl-error "blit-surface" "failed to blit surface ~a to ~a" src dst))) + +(define (blit-scaled src src-rect dst dst-rect) + "Blit the rectangle SRC-RECT from the surface SRC to DST-RECT of the +surface DST, scaling the source to fit the destination." + (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-scaled" "failed to blit surface ~a to ~a" src dst))) |