bitmap

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allegro

This document pertains to bitmap related methods found in the Allegro egg.

Please see the main [allegro] wiki page for more information.

Enums

bitmap-flag

bitmap-flag->int bitmap-flagprocedure

bitmap-flag may be one of the following symbols:

memory-bitmap
keep-bitmap-format
force-locking
no-preserve-texture
alpha-test
min-linear
mag-linear
mipmap
no-premultiplied-alpha
video-bitmap

int->bitmap-flag integerprocedure

blend-operation

blend-operation->int blend-operationprocedure

blend-operation may be one of the following symbols:

add
source-minus-destination
destination-minus-source

int->blend-operation integerprocedure

blending-mode

blending-mode->int blending-modeprocedure

blending-mode may be one of the following symbols:

zero
one
alpha
inverse-alpha

int->blending-mode integerprocedure

blitting-flag

blitting-flag->int blitting-flagprocedure

blitting-flag may be one of the following symbols:

flip-horizontal
flip-vertical

int->blitting-flag integerprocedure

locking-flag

locking-flag->int locking-flagprocedure

locking-flag may be one of the following symbols:

read-write
read-only
write-only

int->locking-flag integerprocedure

pixel-format

pixel-format->int pixel-formatprocedure

pixel-format may be one of the following symbols:

any
any-no-alpha
any-with-alpha
any-15-no-alpha
any-16-no-alpha
any-16-with-alpha
any-24-no-alpha
any-32-no-alpha
any-32-with-alpha
argb-8888
rgba-8888
argb-4444
rgb-888
rgb-565
rgb555
rgba-5551
argb-1555
abgr-8888
xbgr-8888
bgr-888
bgr-565
bgr-555
rgbx-8888
xrgb-8888
abgr-f32
abgr-8888-le
rgba-4444

int->pixel-format integerprocedure

Records

bitmaprecord

locked-region

locked-regionrecord
free-locked-region! locked-regionprocedure
locked-region-data locked-regionprocedure
locked-region-format locked-regionprocedure
locked-region-pitch locked-regionprocedure
locked-region-pixel-size locked-regionprocedure

Functions

Bitmap

new-bitmap-format-set! pixel-formatprocedure: Implements al_set_new_bitmap_format.

new-bitmap-formatprocedure: Implements al_get_new_bitmap_flags.

new-bitmap-flags-set! bitmap-flagprocedure: Implements al_set_new_bitmap_flags.

new-bitmap-flagsprocedure: Implements al_get_new_bitmap_flags.

new-bitmap-add-flag bitmap-flagprocedure: Implements al_add_new_bitmap_flag.

(make-bitmap* (integer width) (integer height))procedure: Implements al_create_bitmap.

(make-bitmap (integer width) (integer height))procedure: Implements al_create_bitmap, with (free-bitmap!) declared as a finalizer.

(bitmap-draw bitmap (float dx) (float dy) bitmap-flag)procedure: Implements al_draw_bitmap.

(draw-bitmap bitmap (float dx) (float dy) bitmap-flag)procedure: Implements al_draw_bitmap.

(bitmap-draw-region bitmap (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_bitmap_region.

(draw-bitmap-region bitmap (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_bitmap_region.

(bitmap-draw-scaled bitmap (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (float dw) (float dh) (integer bitmap-flags))procedure: Implements al_draw_scaled_bitmap.

(draw-scaled-bitmap bitmap (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (float dw) (float dh) (integer bitmap-flags))procedure: Implements al_draw_scaled_bitmap.

(bitmap-draw-rotated bitmap (float cx) (float cy) (float dx) (float dy) (float angle) (integer bitmap-flags))procedure: Implements al_draw_rotated_bitmap.

(draw-rotated-bitmap bitmap (float cx) (float cy) (float dx) (float dy) (float angle) (integer bitmap-flags))procedure: Implements al_draw_rotated_bitmap.

(bitmap-draw-scaled-rotated bitmap (float cx) (float cy) (float dx) (float dy) (float xscale) (float yscale) (float angle) (integer bitmap-flags))procedure: Implements al_draw_scaled_rotated_bitmap.

(draw-scaled-rotated-bitmap bitmap (float cx) (float cy) (float dx) (float dy) (float xscale) (float yscale) (float angle) (integer bitmap-flags))procedure: Implements al_draw_scaled_rotated_bitmap.

(bitmap-draw-tinted (bitmap bmp) (color tint) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_tinted_bitmap.

(draw-tinted-bitmap (bitmap bmp) (color tint) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_tinted_bitmap.

(bitmap-draw-tinted-region (bitmap bmp) (color tint) (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_tinted_bitmap_region.

(draw-tinted-bitmap-region (bitmap bmp) (color tint) (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (integer bitmap-flags))procedure: Implements al_draw_tinted_bitmap_region.

(bitmap-draw-tinted-scaled (bitmap bmp) (color tint) (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (float dw) (float dh) (integer flags))procedure: Implements al_draw_tinted_scale_bitmap.

(draw-tinted-scaled-bitmap (bitmap bmp) (color tint) (float sx) (float sy) (float sw) (float sh) (float dx) (float dy) (float dw) (float dh) (integer flags))procedure: Implements al_draw_tinted_scale_bitmap.

(bitmap-draw-tinted-rotated (bitmap bmp) (color tint) (float cx) (float cy) (float dx) (float dy) (float angle) (integer flags))procedure: Implements al_draw_tinted_rotated_bitmap.

(draw-tinted-rotated-bitmap (bitmap bmp) (color tint) (float cx) (float cy) (float dx) (float dy) (float angle) (integer flags))procedure: Implements al_draw_tinted_rotated_bitmap.

(bitmap-draw-tinted-scaled-rotated (bitmap bmp) (color tint) (float cx) (float cy) (float dx) (float dy) (float xscale) (float yscale) (float angle) (integer flags))procedure: Implements al_draw_tinted_scaled_rotated_bitmap.

(draw-tinted-scaled-rotated-bitmap (bitmap bmp) (color tint) (float cx) (float cy) (float dx) (float dy) (float xscale) (float yscale) (float angle) (integer flags))procedure: Implements al_draw_tinted_scaled_rotated_bitmap.

(bitmap-lock*! bitmap pixel-format (integer locking-flag))procedure: Implements al_lock_bitmap.

(lock-bitmap*! bitmap pixel-format (integer locking-flag))procedure: Implements al_lock_bitmap.

(bitmap-lock-region*! bitmap (integer x) (integer y) (integer width) (integer height) pixel-format (integer locking-flag))procedure: Implements al_lock_bitmap_region.

(lock-bitmap-region*! bitmap (integer x) (integer y) (integer width) (integer height) pixel-format (integer locking-flag))procedure: Implements al_lock_bitmap_region.

bitmap-unlock! bitmapprocedure: Implements al_unlock_bitmap.

unlock-bitmap! bitmapprocedure: Implements al_unlock_bitmap.

(bitmap-lock! bitmap pixel-format (integer bitmap-flags))procedure: Implements al_lock_bitmap, with (bitmap-unlock!) and (free-locked-region!) declared as finalizers.

(lock-bitmap! bitmap pixel-format (integer bitmap-flags))procedure: Implements al_lock_bitmap, with (bitmap-unlock!) and (free-locked-region!) declared as finalizers.

(bitmap-lock-region! bitmap (integer x) (integer y) (integer width) (integer height) pixel-format (integer bitmap-flags))procedure: Implements al_lock_bitmap_region, with (bitmap-unlock!) and (free-locked-region!) declared as finalizers.

(lock-bitmap-region! bitmap (integer x) (integer y) (integer width) (integer height) pixel-format (integer bitmap-flags))procedure: Implements al_lock_bitmap_region, with (bitmap-unlock!) and (free-locked-region!) declared as finalizers.

(bitmap-pixel! (bitmap bmp) (int x) (int y) (color c))procedure: Sets the provided color struct to the color value at the given coordinates.

(bitmap-pixel* (bitmap bmp) (int x) (int y))procedure: Returns a new color struct of the color value at the given coordinates.

(bitmap-pixel (bitmap bmp) (int x) (int y))procedure: Returns a new color struct of the color value at the given coordinates, with (free-color!) declared as a finalizer.

bitmap-width bitmapprocedure: Implements al_get_bitmap_width.

bitmap-height bitmapprocedure: Implements al_get_bitmap_height.

bitmap-format bitmapprocedure: Implements al_get_bitmap_format.

bitmap-flags bitmapprocedure: Implements al_get_bitmap_flags.

bitmap-mask->alpha! bitmap colorprocedure: Implements al_convert_mask_to_alpha.

bitmap-clone* bitmapprocedure: Implements al_clone_bitmap.

bitmap-clone bitmapprocedure: Implements al_clone_bitmap, with (free-bitmap!) declared as a finalizer.

bitmap-locked? bitmapprocedure: Implements al_is_bitmap_locked.

(bitmap-put-pixel! bitmap (integer x) (integer y) (color c))procedure: Implements _al_put_pixel.

(make-sub-bitmap* bitmap (integer x) (integer y) (integer width) (integer height))procedure: Implements al_create_sub_bitmap.

(make-sub-bitmap bitmap (integer x) (integer y) (integer width) (integer height))procedure: Implements al_create_sub_bitmap, with (free-bitmap!) declared as a finalizer.

sub-bitmap? bitmapprocedure: Implements al_is_sub_bitmap.

(put-pixel (integer x) (integer y) (color c))procedure: Implements al_put_pixel.

(put-blended-pixel (integer x) (integer y) (color c))procedure: Implements al_put_blended_pixel.

pixel-size pixel-formatprocedure: Implements al_get_pixel_size.

(color-map-rgb! (color c) (unsigned-byte r) (unsigned-byte g) (unsigned-byte b))procedure: Maps rgb values onto the provided color struct, implementing al_map_rgb.

(color-map-rgba! (color c) (unsigned-byte r) (unsigned-byte g) (unsigned-byte b) (unsigned-byte a))procedure: Maps rgba values onto the provided color struct, implementing al_map_rgba.

(color-map-rgb-float! (color c) (unsigned-byte r) (unsigned-byte g) (unsigned-byte b))procedure: Maps rgb values onto the provided color struct, implementing al_map_rgb_f.

(color-map-rgba-float! (color c) (unsigned-byte r) (unsigned-byte g) (unsigned-byte b) (unsigned-byte a))procedure: Maps rgba values onto the provided color struct, implementing al_map_rgba_f.

map-rgb* r g bprocedure: Returns a new color struct mapped to the given rgb values.

map-rgb r g bprocedure: Returns a new color struct mapped to the given rgb values, with (free-color!) declared as a finalizer.

map-rgba* r g b aprocedure: Prodcues a new color struct mapped to the given rgba values.

map-rgba r g b aprocedure: Returns a new color struct mapped to the given rgba values, with (free-color!) declared as a finalizer.

map-rgb-float* r g bprocedure: Returns a new color struct mapped to the given rgb values.

map-rgb-float r g bprocedure: Returns a new color struct mapped to the given rgb values, with (free-color!) declared as a finalizer.

map-rgba-float* r g b aprocedure: Returns a new color struct mapped to the given rgba values.

map-rgba-float r g b aprocedure: Returns a new color struct mapped to the given rgba values, with (free-color!) declared as a finalizer.

color-unmap-rgb colorprocedure: Returns a 3-element list of the rgb values representing a given color struct.

color-unmap-rgba colorprocedure: Returns a 4-element list of the rgba values representing a given color struct.

color-unmap-rgb-float colorprocedure: Returns a 3-element list of the rgb values representing a given color struct.

color-unmap-rgba-float colorprocedure: Returns a 4-element list of the rgb values representing a given color struct.

pixel-format-bits pixel-formatprocedure: Implements al_get_pixel_format_bits.

clipping-rectangleprocedure: Returns a 4-element list of the x, y, width and height values of the current clipping rectangle.

(clippingle-rectangle-set! (integer x) (integer y) (integer width) (integer height))procedure: Sets the current clipping rectangle.

blenderprocedure: Returns a 3-element list of the op, source and destination of the current blender.

(blender-set! (blend-operation op) (integer source) (integer destination))procedure: Implements al_set_blender.

separate-blenderprocedure: Returns a 6-element list of the op, source, destination, alpha op, alpha source, and alpha destination.

(separate-blender-set! (blend-operation op) (integer src) (integer destination) (integer alpha-op) (integer alpha-source) (integer alpha-destination))procedure: Implements al_set_separate_blender.

Bitmap I/O

(register-bitmap-loader (string extension) (function bitmap ((const c-string))))procedure: Implements al_register_bitmap_loader.

(register-bitmap-file-loader (string extension) (function bitmap (file)))procedure: Implements al_register_bitmap_loader_f.

(register-bitmap-saver (string extension) ((function bool ((const c-string) bitmap)) saver))procedure: Implements al_register_bitmap_saver.

(register-bitmap-file-saver (string extension) ((function bool (file bitmap)) saver))procedure: Implements al_register_bitmap_saver_f.

load-bitmap* stringprocedure: Implements al_load_bitmap.

load-bitmap stringprocedure: Implements al_load_bitmap, with (free-bitmap!) declared as a finalizer.

load-bitmap-from-file* file stringprocedure: Implements al_load_bitmap_f.

load-bitmap-from-file file stringprocedure: Implements al_load_bitmap_f, with (free-bitmap!) declared as a finalizer.

bitmap-save bitmap stringprocedure: Implements al_save_bitmap.

bitmap-save-to-file bitmap file stringprocedure: Implements al_save_bitmap_f.

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