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Initial commit of GL texture gadgets

db4
Matthew Willis 2008-05-24 20:04:12 -07:00
parent 0c8d145378
commit d5f6cf4d05
1 changed files with 42 additions and 17 deletions
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59
extra/cairo/gadgets/gadgets.factor
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@ -2,7 +2,7 @@
! See http://factorcode.org/license.txt for BSD license.
USING: cairo cairo.ffi ui.render kernel opengl.gl opengl
math byte-arrays ui.gadgets accessors arrays
namespaces io.backend ;
namespaces io.backend memoize ;
IN: cairo.gadgets
@ -10,7 +10,7 @@ IN: cairo.gadgets
! one performs the cairo ops once and caches the bytes, the other
! performs cairo ops every refresh
TUPLE: cairo-gadget width height quot cache? bytes ;
TUPLE: cairo-gadget width height quot cache? texture ;
PREDICATE: cached-cairo < cairo-gadget cache?>> ;
: <cairo-gadget> ( width height quot -- cairo-gadget )
cairo-gadget construct-gadget
@ -29,31 +29,54 @@ PREDICATE: cached-cairo < cairo-gadget cache?>> ;
[ cairo_image_surface_create_for_data ] 3bi
r> with-cairo-from-surface ;
: (cairo>bytes) ( gadget -- byte-array )
: cairo>bytes ( gadget -- byte-array )
[ width>> ] [ height>> ] [ quot>> ] tri copy-cairo ;
GENERIC: cairo>bytes
M: cairo-gadget cairo>bytes ( gadget -- byte-array )
(cairo>bytes) ;
M: cached-cairo cairo>bytes ( gadget -- byte-array )
dup bytes>> [ ] [
dup (cairo>bytes) [ >>bytes drop ] keep
] ?if ;
: cairo>png ( gadget path -- )
>r [ cairo>bytes CAIRO_FORMAT_ARGB32 ] [ width>> ]
[ height>> ] tri over width>stride
cairo_image_surface_create_for_data
r> [ cairo_surface_write_to_png check-cairo ] curry with-surface ;
M: cairo-gadget draw-gadget* ( gadget -- )
origin get [
: with-cairo-gl ( quot -- )
>r origin get [
0 0 glRasterPos2i
1.0 -1.0 glPixelZoom
] r> compose with-translation ;
M: cairo-gadget draw-gadget* ( gadget -- )
[
[ width>> ] [ height>> GL_BGRA GL_UNSIGNED_BYTE ]
[ cairo>bytes ] tri glDrawPixels
] with-translation ;
] with-cairo-gl ;
MEMO: render-to-texture ( gadget -- )
GL_TEXTURE_BIT [
GL_TEXTURE_2D over texture>> glBindTexture
>r GL_TEXTURE_2D 0 GL_RGBA r>
[ width>> ] [ height>> 0 GL_BGRA GL_UNSIGNED_BYTE ]
[ cairo>bytes ] tri glTexImage2D
init-texture
GL_TEXTURE_2D 0 glBindTexture
] do-attribs ;
M: cached-cairo draw-gadget* ( gadget -- )
GL_TEXTURE_2D [
[
dup render-to-texture
GL_TEXTURE_2D over texture>> glBindTexture
GL_QUADS [
[ width>> ] [ height>> ] bi 2array four-sides
] do-state
GL_TEXTURE_2D 0 glBindTexture
] with-cairo-gl
] do-enabled ;
M: cached-cairo graft* ( gadget -- )
gen-texture >>texture drop ;
M: cached-cairo ungraft* ( gadget -- )
texture>> delete-texture ;
M: cairo-gadget pref-dim* ( gadget -- rect )
[ width>> ] [ height>> ] bi 2array ;
@ -63,11 +86,13 @@ M: cairo-gadget pref-dim* ( gadget -- rect )
cr cairo_paint ;
: <bytes-gadget> ( width height bytes -- cairo-gadget )
>r [ ] <cached-cairo> r> >>bytes ;
>r [ ] <cached-cairo> r> >>texture ;
: <png-gadget> ( path -- gadget )
normalize-path cairo_image_surface_create_from_png
[ cairo_image_surface_get_width ]
[ cairo_image_surface_get_height 2dup ]
[ [ copy-surface ] curry copy-cairo ] tri
<bytes-gadget> ;
<bytes-gadget> ;