70 lines
2.4 KiB
Factor
70 lines
2.4 KiB
Factor
! Copyright (C) 2008 Joe Groff.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel namespaces make sequences splitting opengl.gl
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continuations math.parser math arrays sets strings math.order fry ;
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IN: opengl.capabilities
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: (require-gl) ( thing require-quot make-error-quot -- )
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[ dupd call [ drop ] ] dip '[ _ " " make throw ] if ; inline
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: (has-extension?) ( query-extension(s) available-extensions -- ? )
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over string? [ member? ] [ [ member? ] curry any? ] if ;
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: gl-extensions ( -- seq )
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GL_EXTENSIONS glGetString " " split ;
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: has-gl-extensions? ( extensions -- ? )
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gl-extensions [ (has-extension?) ] curry all? ;
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: (make-gl-extensions-error) ( required-extensions -- )
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gl-extensions diff
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"Required OpenGL extensions not supported:\n" %
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[ " " % % "\n" % ] each ;
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: require-gl-extensions ( extensions -- )
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[ has-gl-extensions? ]
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[ (make-gl-extensions-error) ]
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(require-gl) ;
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: version-seq ( version-string -- version-seq )
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"." split [ string>number ] map ;
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: version-before? ( version1 version2 -- ? )
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[ version-seq ] bi@ before=? ;
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: (gl-version) ( -- version vendor )
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GL_VERSION glGetString " " split1 ;
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: gl-version ( -- version )
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(gl-version) drop ;
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: gl-vendor-version ( -- version )
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(gl-version) nip ;
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: gl-vendor ( -- name )
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GL_VENDOR glGetString ;
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: has-gl-version? ( version -- ? )
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gl-version version-before? ;
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: (make-gl-version-error) ( required-version -- )
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"Required OpenGL version " % % " not supported (" % gl-version % " available)" % ;
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: require-gl-version ( version -- )
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[ has-gl-version? ]
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[ (make-gl-version-error) ]
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(require-gl) ;
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: (glsl-version) ( -- version vendor )
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GL_SHADING_LANGUAGE_VERSION glGetString " " split1 ;
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: glsl-version ( -- version )
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(glsl-version) drop ;
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: glsl-vendor-version ( -- version )
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(glsl-version) nip ;
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: has-glsl-version? ( version -- ? )
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glsl-version version-before? ;
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: require-glsl-version ( version -- )
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[ has-glsl-version? ]
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[ "Required GLSL version " % % " not supported (" % glsl-version % " available)" % ]
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(require-gl) ;
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: has-gl-version-or-extensions? ( version extensions -- ? )
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has-gl-extensions? swap has-gl-version? or ;
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: require-gl-version-or-extensions ( version extensions -- )
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2array [ first2 has-gl-version-or-extensions? ] [
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dup first (make-gl-version-error) "\n" %
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second (make-gl-extensions-error) "\n" %
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] (require-gl) ;
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