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Overview
Comment:A bit refactoring, added a very simple example
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 4784aecda7000eb6cfe397de138ea85d708cc5f8
User & Date: bernd 2014-04-29 13:02:02.870
Context
2014-05-14
21:02
Better keyboard handling check-in: c71e1435c8 user: bernd tags: trunk
2014-04-29
13:02
A bit refactoring, added a very simple example check-in: 4784aecda7 user: bernd tags: trunk
2014-04-01
20:23
Destdir depends on where it is called check-in: 7aa55ededf user: bernd tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Changes to gl-helper.fs.
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    2dup ';' scan 2dup 1 /string 2>r drop >r over r> swap - nip
    BEGIN  2dup >wordend  dup WHILE  2nip >wordend >word  REPEAT  2drop
    2r> 2swap ;

Variable $attrib

: >bindattrib ( xt program -- )  0 { prog idx } shader>string
    BEGIN  s" attribute " >attrib extract-name dup  WHILE  $attrib $!

	    prog idx $attrib $@ over + 0 swap c! glBindAttribLocation
	    idx 1+ to idx
    REPEAT  2drop 2drop ;

: >univattrib ( xt program -- )  { prog }
    shader>string
    BEGIN  s" uniform " >attrib extract-name dup  WHILE  $attrib $!
	    prog $attrib $@ over + 0 swap c! glGetUniformLocation ,








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    2dup ';' scan 2dup 1 /string 2>r drop >r over r> swap - nip
    BEGIN  2dup >wordend  dup WHILE  2nip >wordend >word  REPEAT  2drop
    2r> 2swap ;

Variable $attrib

: >bindattrib ( xt program -- )  0 { prog idx } shader>string
    BEGIN  s" attribute " >attrib extract-name dup  WHILE
	    $attrib $!  0 $attrib c$+!
	    prog idx $attrib $@ drop glBindAttribLocation
	    idx 1+ to idx
    REPEAT  2drop 2drop ;

: >univattrib ( xt program -- )  { prog }
    shader>string
    BEGIN  s" uniform " >attrib extract-name dup  WHILE  $attrib $!
	    prog $attrib $@ over + 0 swap c! glGetUniformLocation ,
︙︙
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    0e sf!+ near f2* top bottom f- f/ sf!+ 0e sf!+ 0e sf!+
    right left f+ right left f- f/ sf!+
    top bottom f+ top bottom f- f/ sf!+
    near far f+ near far f- f/ sf!+ -1e sf!+
    sfloat+ sfloat+ near far f* f2* near far f- f/ sf!+ 0e sf!+
    drop ;





: >ap ( near far scale -- ) f2* 1/f { f: scale }
    scale dpy-w @ fm* fdup fnegate fswap
    scale dpy-h @ fm* fdup fnegate fswap >ortho
    \ cr ap-matrix .matrix
    ap-matrix MVPMatrix set-matrix
    ap-matrix MVMatrix set-matrix ;
: >apxy ( xoff yoff -- )  y-apos sf!  x-apos sf! ;

\ textures

Create white-texture \ aabbggrr
  $ffffffff l,  $ffffffff l,
  $ffffffff l,  $ffffffff l,








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    0e sf!+ near f2* top bottom f- f/ sf!+ 0e sf!+ 0e sf!+
    right left f+ right left f- f/ sf!+
    top bottom f+ top bottom f- f/ sf!+
    near far f+ near far f- f/ sf!+ -1e sf!+
    sfloat+ sfloat+ near far f* f2* near far f- f/ sf!+ 0e sf!+
    drop ;

: ap-set ( -- )
    ap-matrix MVPMatrix set-matrix
    ap-matrix MVMatrix set-matrix ;

: >ap ( near far scale -- ) f2* 1/f { f: scale }
    scale dpy-w @ fm* fdup fnegate fswap
    scale dpy-h @ fm* fdup fnegate fswap >ortho
    \ cr ap-matrix .matrix
    ap-set ;

: >apxy ( xoff yoff -- )  y-apos sf!  x-apos sf! ;

\ textures

Create white-texture \ aabbggrr
  $ffffffff l,  $ffffffff l,
  $ffffffff l,  $ffffffff l,
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    none-tex no-texture
    Texture 0 glUniform1i
    Ambient 1 ambient% glUniform1fv
    LightPos 0.0e 0.0e -0.3e glUniform3f
    z-bias set-color+
    .01e 100e dpy-w @ dpy-h @ min s>f f2/ 100 fm* >ap ;

: 2d-vertex ( index addr -- ) >r
    dup 2 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: 3d-vertex ( index addr -- ) >r
    dup 3 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: 4d-vertex ( index addr -- ) >r
    dup 4 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: rgba-vertex ( index addr -- ) >r
    dup 4 GL_UNSIGNED_BYTE GL_TRUE 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

\ glDrawElements helper

$8 cells buffer: gl-buffers
: buf@ ( n -- buf ) cells gl-buffers + @ ;
: bind-buf ( type n -- ) buf@ glBindBuffer ;

0 Value array-buf








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    none-tex no-texture
    Texture 0 glUniform1i
    Ambient 1 ambient% glUniform1fv
    LightPos 0.0e 0.0e -0.3e glUniform3f
    z-bias set-color+
    .01e 100e dpy-w @ dpy-h @ min s>f f2/ 100 fm* >ap ;

















\ glDrawElements helper

$8 cells buffer: gl-buffers
: buf@ ( n -- buf ) cells gl-buffers + @ ;
: bind-buf ( type n -- ) buf@ glBindBuffer ;

0 Value array-buf
︙︙
Changes to gl-sample.fs. 
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\ opengl example

require gl-helper.fs

also opengl

tex: ascii-tex

: load-textures ( -- )
    ascii-tex s" ascii.png" load-texture wrap mipmap ;

\ triangle example





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\ opengl example

require gl-helper.fs

also opengl also [IFDEF] android android [THEN]

tex: ascii-tex

: load-textures ( -- )
    ascii-tex s" ascii.png" load-texture wrap mipmap ;

\ triangle example
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    1e0 2e0 >st v+
    0e0 0e0 >st v+ o> ;

: normals >v
    3 0 DO  0e 0e -1e n>xyz v+  LOOP  o> ;

Variable new-config

[IFDEF] android
also android

:noname  defers window-init
    ['] VertexShader ['] FragmentShader create-program to program
    program init load-textures ; IS window-init

:noname new-config on ; is config-changed
[THEN]

FVariable touch -100e touch f!
FVariable motion 0.01e motion f!

: draw-tri-angle ( f -- )
    0.01e 0.02e 0.15e 1.0e glClearColor
    clear
    Ambient 1 ambient% glUniform1fv
    v0  set-triangle
    normals texcoords colors
    none-tex
    i0  0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements
    v0 colors'
    ascii-tex
    GL_TRIANGLES draw-elements
    sync ;

: draw-tri { f: angle -- angle' }
    new-config @ IF
	dpy-w @ dpy-h @ getwh dpy-w @ dpy-h @ d<> IF  new-config off  THEN
    THEN
    angle draw-tri-angle
    >looper
    *input >r r@ IF
	r@ action @ abs 1 <> IF
	    \ ." Touch at " r@ x0 ? r@ y0 ? cr
	    \ r@ x0 @ 20 < r@ y0 @ 20 < and IF -1 (bye) THEN
	    r@ x0 @ dpy-w @ 2/ - s>f dpy-h @ 2/ fm/








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    1e0 2e0 >st v+
    0e0 0e0 >st v+ o> ;

: normals >v
    3 0 DO  0e 0e -1e n>xyz v+  LOOP  o> ;

Variable new-config











FVariable touch -100e touch f!
FVariable motion 0.01e motion f!

: draw-tri-angle ( f -- )
    0.01e 0.02e 0.15e 1.0e glClearColor
    clear
    Ambient 1 ambient% glUniform1fv
    v0  set-triangle
    normals texcoords colors
    none-tex
    i0  0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements
    v0 colors'
    ascii-tex
    GL_TRIANGLES draw-elements
    sync ;

: draw-tri { f: angle -- angle' }



    angle draw-tri-angle
    >looper
    *input >r r@ IF
	r@ action @ abs 1 <> IF
	    \ ." Touch at " r@ x0 ? r@ y0 ? cr
	    \ r@ x0 @ 20 < r@ y0 @ 20 < and IF -1 (bye) THEN
	    r@ x0 @ dpy-w @ 2/ - s>f dpy-h @ 2/ fm/
︙︙
Added gl-simple.fs. 




















































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\ simple opengl test

[defined] init-opengl 0= constant standalone
require gl-helper.fs
also opengl
also [IFDEF] android android [THEN]
standalone [if] init-opengl buffer-init [then]

: simple-init ( -- )
    ['] VertexShader ['] FragmentShader create-program to program
    program init  0e >y-pos
    1e 0e 0e 1e glClearColor ;

: draw ( -- )  none-tex
    v0 >v
    -1e -1e >xy  $FFFFFFFF rgba>c  n> v+
     1e -1e >xy  $FFFFFFFF rgba>c  n> v+
     0e  1e >xy  $FFFFFFFF rgba>c  n> v+ v>
    i0 0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements ;

: simple ( -- )  simple-init
  1 level# +!  begin clear draw sync >looper level# @ 0= until ;

simple
Changes to gl-terminal.fs.
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$ff40bf40 l, \ dimm Green
$ff40bfbf l, \ dimm Yellow
$ffbf4040 l, \ dimm Blue
$ffbf40bf l, \ dimm Magenta
$ffbfbf40 l, \ dimm Cyan
$ffbfbfbf l, \ dimm White

: term-load-textures ( -- )
    chars-tex s" ascii.png" load-texture 2drop linear
    GL_TEXTURE2 glActiveTexture
    color-tex color-matrix $10 1 rgba-map nearest
    GL_TEXTURE0 glActiveTexture ;

Variable color-index
bl dup $70 and 5 lshift or $F0F and 4 lshift color-index !
Variable std-bg








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$ff40bf40 l, \ dimm Green
$ff40bfbf l, \ dimm Yellow
$ffbf4040 l, \ dimm Blue
$ffbf40bf l, \ dimm Magenta
$ffbfbf40 l, \ dimm Cyan
$ffbfbfbf l, \ dimm White

: term-load-textures ( addr u -- )
    chars-tex load-texture 2drop linear
    GL_TEXTURE2 glActiveTexture
    color-tex color-matrix $10 1 rgba-map nearest
    GL_TEXTURE0 glActiveTexture ;

Variable color-index
bl dup $70 and 5 lshift or $F0F and 4 lshift color-index !
Variable std-bg
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' gl-page IS page
' gl-attr! IS attr!
default-out op-vector !

\ initialize

: term-init ( -- )
    clazz >o hideProgress o>
    >screen-orientation
    create-terminal-program to terminal-program
    terminal-program terminal-init term-load-textures form-chooser

    unit-matrix MVPMatrix set-matrix ;

:noname  defers window-init term-init config-changer ; IS window-init

window-init

previous previous \ remove opengl from search order








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' gl-page IS page
' gl-attr! IS attr!
default-out op-vector !

\ initialize

: term-init ( -- )
    [IFDEF] clazz clazz >o hideProgress o> [THEN]
    >screen-orientation
    create-terminal-program to terminal-program
    terminal-program terminal-init
    s" ascii.png" term-load-textures form-chooser
    unit-matrix MVPMatrix set-matrix ;

:noname  defers window-init term-init config-changer ; IS window-init

window-init

previous previous \ remove opengl from search order
Changes to gles2/gl-helper.fs.
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    2dup ';' scan 2dup 1 /string 2>r drop >r over r> swap - nip
    BEGIN  2dup >wordend  dup WHILE  2nip >wordend >word  REPEAT  2drop
    2r> 2swap ;

Variable $attrib

: >bindattrib ( xt program -- )  0 { prog idx } shader>string
    BEGIN  s" attribute " >attrib extract-name dup  WHILE  $attrib $!

	    prog idx $attrib $@ over + 0 swap c! glBindAttribLocation
	    idx 1+ to idx
    REPEAT  2drop 2drop ;

: >univattrib ( xt program -- )  { prog }
    shader>string
    BEGIN  s" uniform " >attrib extract-name dup  WHILE  $attrib $!
	    prog $attrib $@ over + 0 swap c! glGetUniformLocation ,








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    2dup ';' scan 2dup 1 /string 2>r drop >r over r> swap - nip
    BEGIN  2dup >wordend  dup WHILE  2nip >wordend >word  REPEAT  2drop
    2r> 2swap ;

Variable $attrib

: >bindattrib ( xt program -- )  0 { prog idx } shader>string
    BEGIN  s" attribute " >attrib extract-name dup  WHILE
	    $attrib $!  0 $attrib c$+!
	    prog idx $attrib $@ drop glBindAttribLocation
	    idx 1+ to idx
    REPEAT  2drop 2drop ;

: >univattrib ( xt program -- )  { prog }
    shader>string
    BEGIN  s" uniform " >attrib extract-name dup  WHILE  $attrib $!
	    prog $attrib $@ over + 0 swap c! glGetUniformLocation ,
︙︙
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    0e sf!+ near f2* top bottom f- f/ sf!+ 0e sf!+ 0e sf!+
    right left f+ right left f- f/ sf!+
    top bottom f+ top bottom f- f/ sf!+
    near far f+ near far f- f/ sf!+ -1e sf!+
    sfloat+ sfloat+ near far f* f2* near far f- f/ sf!+ 0e sf!+
    drop ;





: >ap ( near far scale -- ) f2* 1/f { f: scale }
    scale dpy-w @ fm* fdup fnegate fswap
    scale dpy-h @ fm* fdup fnegate fswap >ortho
    \ cr ap-matrix .matrix
    ap-matrix MVPMatrix set-matrix
    ap-matrix MVMatrix set-matrix ;
: >apxy ( xoff yoff -- )  y-apos sf!  x-apos sf! ;

\ textures

Create white-texture \ aabbggrr
  $ffffffff l,  $ffffffff l,
  $ffffffff l,  $ffffffff l,








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    0e sf!+ near f2* top bottom f- f/ sf!+ 0e sf!+ 0e sf!+
    right left f+ right left f- f/ sf!+
    top bottom f+ top bottom f- f/ sf!+
    near far f+ near far f- f/ sf!+ -1e sf!+
    sfloat+ sfloat+ near far f* f2* near far f- f/ sf!+ 0e sf!+
    drop ;

: ap-set ( -- )
    ap-matrix MVPMatrix set-matrix
    ap-matrix MVMatrix set-matrix ;

: >ap ( near far scale -- ) f2* 1/f { f: scale }
    scale dpy-w @ fm* fdup fnegate fswap
    scale dpy-h @ fm* fdup fnegate fswap >ortho
    \ cr ap-matrix .matrix
    ap-set ;

: >apxy ( xoff yoff -- )  y-apos sf!  x-apos sf! ;

\ textures

Create white-texture \ aabbggrr
  $ffffffff l,  $ffffffff l,
  $ffffffff l,  $ffffffff l,
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    none-tex no-texture
    Texture 0 glUniform1i
    Ambient 1 ambient% glUniform1fv
    LightPos 0.0e 0.0e -0.3e glUniform3f
    z-bias set-color+
    .01e 100e dpy-w @ dpy-h @ min s>f f2/ 100 fm* >ap ;

: 2d-vertex ( index addr -- ) >r
    dup 2 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: 3d-vertex ( index addr -- ) >r
    dup 3 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: 4d-vertex ( index addr -- ) >r
    dup 4 GL_FLOAT  0 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

: rgba-vertex ( index addr -- ) >r
    dup 4 GL_UNSIGNED_BYTE GL_TRUE 0 r> glVertexAttribPointer
    glEnableVertexAttribArray ;

\ glDrawElements helper

$8 cells buffer: gl-buffers
: buf@ ( n -- buf ) cells gl-buffers + @ ;
: bind-buf ( type n -- ) buf@ glBindBuffer ;

0 Value array-buf








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    none-tex no-texture
    Texture 0 glUniform1i
    Ambient 1 ambient% glUniform1fv
    LightPos 0.0e 0.0e -0.3e glUniform3f
    z-bias set-color+
    .01e 100e dpy-w @ dpy-h @ min s>f f2/ 100 fm* >ap ;

















\ glDrawElements helper

$8 cells buffer: gl-buffers
: buf@ ( n -- buf ) cells gl-buffers + @ ;
: bind-buf ( type n -- ) buf@ glBindBuffer ;

0 Value array-buf
︙︙
Changes to gles2/gl-sample.fs. 
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\ opengl example

require gl-helper.fs

also opengl

tex: ascii-tex

: load-textures ( -- )
    ascii-tex s" ascii.png" load-texture wrap mipmap ;

\ triangle example





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\ opengl example

require gl-helper.fs

also opengl also [IFDEF] android android [THEN]

tex: ascii-tex

: load-textures ( -- )
    ascii-tex s" ascii.png" load-texture wrap mipmap ;

\ triangle example
︙︙
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    1e0 2e0 >st v+
    0e0 0e0 >st v+ o> ;

: normals >v
    3 0 DO  0e 0e -1e n>xyz v+  LOOP  o> ;

Variable new-config

[IFDEF] android
also android

:noname  defers window-init
    ['] VertexShader ['] FragmentShader create-program to program
    program init load-textures ; IS window-init

:noname new-config on ; is config-changed
[THEN]

FVariable touch -100e touch f!
FVariable motion 0.01e motion f!

: draw-tri-angle ( f -- )
    0.01e 0.02e 0.15e 1.0e glClearColor
    clear
    Ambient 1 ambient% glUniform1fv
    v0  set-triangle
    normals texcoords colors
    none-tex
    i0  0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements
    v0 colors'
    ascii-tex
    GL_TRIANGLES draw-elements
    sync ;

: draw-tri { f: angle -- angle' }
    new-config @ IF
	dpy-w @ dpy-h @ getwh dpy-w @ dpy-h @ d<> IF  new-config off  THEN
    THEN
    angle draw-tri-angle
    >looper
    *input >r r@ IF
	r@ action @ abs 1 <> IF
	    \ ." Touch at " r@ x0 ? r@ y0 ? cr
	    \ r@ x0 @ 20 < r@ y0 @ 20 < and IF -1 (bye) THEN
	    r@ x0 @ dpy-w @ 2/ - s>f dpy-h @ 2/ fm/








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    1e0 2e0 >st v+
    0e0 0e0 >st v+ o> ;

: normals >v
    3 0 DO  0e 0e -1e n>xyz v+  LOOP  o> ;

Variable new-config











FVariable touch -100e touch f!
FVariable motion 0.01e motion f!

: draw-tri-angle ( f -- )
    0.01e 0.02e 0.15e 1.0e glClearColor
    clear
    Ambient 1 ambient% glUniform1fv
    v0  set-triangle
    normals texcoords colors
    none-tex
    i0  0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements
    v0 colors'
    ascii-tex
    GL_TRIANGLES draw-elements
    sync ;

: draw-tri { f: angle -- angle' }



    angle draw-tri-angle
    >looper
    *input >r r@ IF
	r@ action @ abs 1 <> IF
	    \ ." Touch at " r@ x0 ? r@ y0 ? cr
	    \ r@ x0 @ 20 < r@ y0 @ 20 < and IF -1 (bye) THEN
	    r@ x0 @ dpy-w @ 2/ - s>f dpy-h @ 2/ fm/
︙︙
Added gles2/gl-simple.fs. 




















































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\ simple opengl test

[defined] init-opengl 0= constant standalone
require gl-helper.fs
also opengl
also [IFDEF] android android [THEN]
standalone [if] init-opengl buffer-init [then]

: simple-init ( -- )
    ['] VertexShader ['] FragmentShader create-program to program
    program init  0e >y-pos
    1e 0e 0e 1e glClearColor ;

: draw ( -- )  none-tex
    v0 >v
    -1e -1e >xy  $FFFFFFFF rgba>c  n> v+
     1e -1e >xy  $FFFFFFFF rgba>c  n> v+
     0e  1e >xy  $FFFFFFFF rgba>c  n> v+ v>
    i0 0 i, 1 i, 2 i,
    GL_TRIANGLES draw-elements ;

: simple ( -- )  simple-init
  1 level# +!  begin clear draw sync >looper level# @ 0= until ;

simple
Changes to gles2/gl-terminal.fs.
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$ff40bf40 l, \ dimm Green
$ff40bfbf l, \ dimm Yellow
$ffbf4040 l, \ dimm Blue
$ffbf40bf l, \ dimm Magenta
$ffbfbf40 l, \ dimm Cyan
$ffbfbfbf l, \ dimm White

: term-load-textures ( -- )
    chars-tex s" ascii.png" load-texture 2drop linear
    GL_TEXTURE2 glActiveTexture
    color-tex color-matrix $10 1 rgba-map nearest
    GL_TEXTURE0 glActiveTexture ;

Variable color-index
bl dup $70 and 5 lshift or $F0F and 4 lshift color-index !
Variable std-bg








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$ff40bf40 l, \ dimm Green
$ff40bfbf l, \ dimm Yellow
$ffbf4040 l, \ dimm Blue
$ffbf40bf l, \ dimm Magenta
$ffbfbf40 l, \ dimm Cyan
$ffbfbfbf l, \ dimm White

: term-load-textures ( addr u -- )
    chars-tex load-texture 2drop linear
    GL_TEXTURE2 glActiveTexture
    color-tex color-matrix $10 1 rgba-map nearest
    GL_TEXTURE0 glActiveTexture ;

Variable color-index
bl dup $70 and 5 lshift or $F0F and 4 lshift color-index !
Variable std-bg
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' gl-page IS page
' gl-attr! IS attr!
default-out op-vector !

\ initialize

: term-init ( -- )
    clazz >o hideProgress o>
    >screen-orientation
    create-terminal-program to terminal-program
    terminal-program terminal-init term-load-textures form-chooser

    unit-matrix MVPMatrix set-matrix ;

:noname  defers window-init term-init config-changer ; IS window-init

window-init

previous previous \ remove opengl from search order








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' gl-page IS page
' gl-attr! IS attr!
default-out op-vector !

\ initialize

: term-init ( -- )
    [IFDEF] clazz clazz >o hideProgress o> [THEN]
    >screen-orientation
    create-terminal-program to terminal-program
    terminal-program terminal-init
    s" ascii.png" term-load-textures form-chooser
    unit-matrix MVPMatrix set-matrix ;

:noname  defers window-init term-init config-changer ; IS window-init

window-init

previous previous \ remove opengl from search order
Fossil version [611144ddd9] 2025-05-16 13:52:48