114 lines
2.6 KiB
Factor
114 lines
2.6 KiB
Factor
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USING: kernel alien.c-types combinators sequences splitting
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opengl.gl ui.gadgets ui.render
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math math.vectors accessors ;
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IN: frame-buffer
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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TUPLE: frame-buffer action dim last-dim graft ungraft pixels ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: init-frame-buffer-pixels ( frame-buffer -- frame-buffer )
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dup
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rect-dim product "uint[4]" <c-array>
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>>pixels ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: <frame-buffer> ( -- frame-buffer )
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frame-buffer construct-gadget
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[ ] >>action
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{ 100 100 } >>dim
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[ ] >>graft
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[ ] >>ungraft ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: draw-pixels ( fb -- fb )
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dup >r
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dup >r
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rect-dim first2 GL_RGBA GL_UNSIGNED_INT r> pixels>> glDrawPixels
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r> ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: read-pixels ( fb -- fb )
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dup >r
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dup >r
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>r
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0 0 r> rect-dim first2 GL_RGBA GL_UNSIGNED_INT r> pixels>> glReadPixels
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r> ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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M: frame-buffer pref-dim* dim>> ;
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M: frame-buffer graft* graft>> call ;
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M: frame-buffer ungraft* ungraft>> call ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: copy-row ( old new -- )
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2dup min-length swap >r head-slice 0 r> copy ;
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! : copy-pixels ( old-pixels old-width new-pixels new-width -- )
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! [ group ] 2bi@
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! [ copy-row ] 2each ;
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! : copy-pixels ( old-pixels old-width new-pixels new-width -- )
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! [ 16 * group ] 2bi@
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! [ copy-row ] 2each ;
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: copy-pixels ( old-pixels old-width new-pixels new-width -- )
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[ 16 * <sliced-groups> ] 2bi@
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[ copy-row ] 2each ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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M: frame-buffer layout* ( fb -- )
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{
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{
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[ dup last-dim>> f = ]
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[
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init-frame-buffer-pixels
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dup
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rect-dim >>last-dim
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drop
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]
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}
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{
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[ dup [ rect-dim ] [ last-dim>> ] bi = not ]
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[
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dup [ pixels>> ] [ last-dim>> first ] bi
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rot init-frame-buffer-pixels
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dup rect-dim >>last-dim
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[ pixels>> ] [ rect-dim first ] bi
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copy-pixels
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]
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}
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{ [ t ] [ drop ] }
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}
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cond ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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M: frame-buffer draw-gadget* ( fb -- )
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dup rect-dim { 0 1 } v* first2 glRasterPos2i
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draw-pixels
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dup action>> call
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glFlush
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read-pixels
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drop ;
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