520 lines
18 KiB
Factor
520 lines
18 KiB
Factor
! (c)2009 Joe Groff bsd license
|
|
USING: accessors alien alien.c-types alien.data arrays
|
|
assocs classes classes.mixin classes.parser classes.singleton
|
|
classes.tuple classes.tuple.private combinators combinators.tuple destructors fry
|
|
generic generic.parser gpu gpu.buffers gpu.framebuffers
|
|
gpu.framebuffers.private gpu.shaders gpu.shaders.private gpu.state
|
|
gpu.textures gpu.textures.private half-floats images kernel
|
|
lexer locals math math.order math.parser namespaces opengl
|
|
opengl.gl parser quotations sequences slots sorting
|
|
specialized-arrays strings ui.gadgets.worlds variants
|
|
vocabs.parser words ;
|
|
FROM: math => float ;
|
|
QUALIFIED-WITH: alien.c-types c
|
|
SPECIALIZED-ARRAY: c:float
|
|
SPECIALIZED-ARRAY: int
|
|
SPECIALIZED-ARRAY: uint
|
|
SPECIALIZED-ARRAY: void*
|
|
IN: gpu.render
|
|
|
|
UNION: ?integer integer POSTPONE: f ;
|
|
|
|
VARIANT: uniform-type
|
|
bool-uniform
|
|
bvec2-uniform
|
|
bvec3-uniform
|
|
bvec4-uniform
|
|
uint-uniform
|
|
uvec2-uniform
|
|
uvec3-uniform
|
|
uvec4-uniform
|
|
int-uniform
|
|
ivec2-uniform
|
|
ivec3-uniform
|
|
ivec4-uniform
|
|
float-uniform
|
|
vec2-uniform
|
|
vec3-uniform
|
|
vec4-uniform
|
|
|
|
mat2-uniform
|
|
mat2x3-uniform
|
|
mat2x4-uniform
|
|
|
|
mat3x2-uniform
|
|
mat3-uniform
|
|
mat3x4-uniform
|
|
|
|
mat4x2-uniform
|
|
mat4x3-uniform
|
|
mat4-uniform
|
|
|
|
texture-uniform ;
|
|
|
|
ALIAS: mat2x2-uniform mat2-uniform
|
|
ALIAS: mat3x3-uniform mat3-uniform
|
|
ALIAS: mat4x4-uniform mat4-uniform
|
|
|
|
TUPLE: uniform
|
|
{ name string read-only initial: "" }
|
|
{ uniform-type class read-only initial: float-uniform }
|
|
{ dim ?integer read-only initial: f } ;
|
|
|
|
VARIANT: index-type
|
|
ubyte-indexes
|
|
ushort-indexes
|
|
uint-indexes ;
|
|
|
|
TUPLE: index-range
|
|
{ start integer read-only }
|
|
{ count integer read-only } ;
|
|
|
|
C: <index-range> index-range
|
|
|
|
TUPLE: multi-index-range
|
|
{ starts uint-array read-only }
|
|
{ counts uint-array read-only } ;
|
|
|
|
C: <multi-index-range> multi-index-range
|
|
|
|
TUPLE: index-elements
|
|
{ ptr read-only }
|
|
{ count integer read-only }
|
|
{ index-type index-type read-only } ;
|
|
|
|
C: <index-elements> index-elements
|
|
|
|
UNION: ?buffer buffer POSTPONE: f ;
|
|
|
|
TUPLE: multi-index-elements
|
|
{ buffer ?buffer read-only }
|
|
{ ptrs read-only }
|
|
{ counts uint-array read-only }
|
|
{ index-type index-type read-only } ;
|
|
|
|
C: <multi-index-elements> multi-index-elements
|
|
|
|
UNION: vertex-indexes
|
|
index-range
|
|
multi-index-range
|
|
index-elements
|
|
multi-index-elements ;
|
|
|
|
VARIANT: primitive-mode
|
|
points-mode
|
|
lines-mode
|
|
line-strip-mode
|
|
line-loop-mode
|
|
triangles-mode
|
|
triangle-strip-mode
|
|
triangle-fan-mode ;
|
|
|
|
TUPLE: uniform-tuple ;
|
|
|
|
ERROR: invalid-uniform-type uniform ;
|
|
|
|
<PRIVATE
|
|
|
|
: gl-index-type ( index-type -- gl-index-type )
|
|
{
|
|
{ ubyte-indexes [ GL_UNSIGNED_BYTE ] }
|
|
{ ushort-indexes [ GL_UNSIGNED_SHORT ] }
|
|
{ uint-indexes [ GL_UNSIGNED_INT ] }
|
|
} case ;
|
|
|
|
: gl-primitive-mode ( primitive-mode -- gl-primitive-mode )
|
|
{
|
|
{ points-mode [ GL_POINTS ] }
|
|
{ lines-mode [ GL_LINES ] }
|
|
{ line-strip-mode [ GL_LINE_STRIP ] }
|
|
{ line-loop-mode [ GL_LINE_LOOP ] }
|
|
{ triangles-mode [ GL_TRIANGLES ] }
|
|
{ triangle-strip-mode [ GL_TRIANGLE_STRIP ] }
|
|
{ triangle-fan-mode [ GL_TRIANGLE_FAN ] }
|
|
} case ;
|
|
|
|
GENERIC: render-vertex-indexes ( primitive-mode vertex-indexes -- )
|
|
|
|
GENERIC# render-vertex-indexes-instanced 1 ( primitive-mode vertex-indexes instances -- )
|
|
|
|
M: index-range render-vertex-indexes
|
|
[ gl-primitive-mode ] [ [ start>> ] [ count>> ] bi ] bi* glDrawArrays ;
|
|
|
|
M: index-range render-vertex-indexes-instanced
|
|
[ gl-primitive-mode ] [ [ start>> ] [ count>> ] bi ] [ ] tri*
|
|
glDrawArraysInstanced ;
|
|
|
|
M: multi-index-range render-vertex-indexes
|
|
[ gl-primitive-mode ] [ [ starts>> ] [ counts>> dup length ] bi ] bi*
|
|
glMultiDrawArrays ;
|
|
|
|
M: index-elements render-vertex-indexes
|
|
[ gl-primitive-mode ]
|
|
[ [ count>> ] [ index-type>> gl-index-type ] [ ptr>> ] tri ] bi*
|
|
index-buffer [ glDrawElements ] with-gpu-data-ptr ;
|
|
|
|
M: index-elements render-vertex-indexes-instanced
|
|
[ gl-primitive-mode ]
|
|
[ [ count>> ] [ index-type>> gl-index-type ] [ ptr>> ] tri ]
|
|
[ ] tri*
|
|
swap index-buffer [ swap glDrawElementsInstanced ] with-gpu-data-ptr ;
|
|
|
|
M: multi-index-elements render-vertex-indexes
|
|
[ gl-primitive-mode ]
|
|
[ { [ counts>> ] [ index-type>> gl-index-type ] [ ptrs>> dup length ] [ buffer>> ] } cleave ]
|
|
bi*
|
|
GL_ELEMENT_ARRAY_BUFFER swap [ handle>> ] [ 0 ] if* glBindBuffer glMultiDrawElements ;
|
|
|
|
: (bind-texture-unit) ( texture texture-unit -- )
|
|
swap [ GL_TEXTURE0 + glActiveTexture ] [ bind-texture drop ] bi* ; inline
|
|
|
|
GENERIC: bind-uniform-textures ( program-instance uniform-tuple -- )
|
|
GENERIC: bind-uniforms ( program-instance uniform-tuple -- )
|
|
|
|
M: uniform-tuple bind-uniform-textures
|
|
2drop ;
|
|
M: uniform-tuple bind-uniforms
|
|
2drop ;
|
|
|
|
: uniform-slot-type ( uniform -- type )
|
|
dup dim>> [ drop sequence ] [
|
|
uniform-type>> {
|
|
{ bool-uniform [ boolean ] }
|
|
{ uint-uniform [ integer ] }
|
|
{ int-uniform [ integer ] }
|
|
{ float-uniform [ float ] }
|
|
{ texture-uniform [ texture ] }
|
|
[ drop sequence ]
|
|
} case
|
|
] if ;
|
|
|
|
: uniform>slot ( uniform -- slot )
|
|
[ name>> ] [ uniform-slot-type ] bi 2array ;
|
|
|
|
: uniform-type-texture-units ( uniform-type -- units )
|
|
dup texture-uniform = [ drop 1 ] [ "uniform-tuple-texture-units" word-prop 0 or ] if ;
|
|
|
|
: all-uniform-tuple-slots ( class -- slots )
|
|
dup "uniform-tuple-slots" word-prop
|
|
[ swap superclass all-uniform-tuple-slots prepend ] [ drop { } ] if* ;
|
|
|
|
DEFER: uniform-texture-accessors
|
|
|
|
: uniform-type-texture-accessors ( uniform-type -- accessors )
|
|
texture-uniform = [ { [ ] } ] [ { } ] if ;
|
|
|
|
: uniform-slot-texture-accessor ( uniform -- accessor )
|
|
[ name>> reader-word ] [ [ uniform-type>> ] [ dim>> ] bi uniform-texture-accessors ] bi
|
|
dup length 1 = [ first swap prefix ] [ [ ] 2sequence ] if ;
|
|
|
|
: uniform-tuple-texture-accessors ( uniform-type -- accessors )
|
|
all-uniform-tuple-slots [ uniform-type>> uniform-type-texture-units zero? not ] filter
|
|
[ uniform-slot-texture-accessor ] map ;
|
|
|
|
: uniform-texture-accessors ( uniform-type dim -- accessors )
|
|
[
|
|
dup uniform-type?
|
|
[ uniform-type-texture-accessors ]
|
|
[ uniform-tuple-texture-accessors ] if
|
|
] [
|
|
2dup swap empty? not and [
|
|
iota [
|
|
[ swap nth ] swap prefix
|
|
over length 1 = [ swap first append ] [ swap suffix ] if
|
|
] with map
|
|
] [ drop ] if
|
|
] bi* ;
|
|
|
|
: texture-accessor>cleave ( unit accessors -- unit' cleaves )
|
|
dup last sequence?
|
|
[ [ last [ texture-accessor>cleave ] map ] [ but-last ] bi swap suffix \ cleave suffix ]
|
|
[ over suffix \ (bind-texture-unit) suffix [ 1 + ] dip ] if ;
|
|
|
|
: [bind-uniform-textures] ( class -- quot )
|
|
f uniform-texture-accessors
|
|
0 swap [ texture-accessor>cleave ] map nip
|
|
\ nip swap \ cleave [ ] 3sequence ;
|
|
|
|
DEFER: [bind-uniform-tuple]
|
|
|
|
:: [bind-uniform-array] ( value>>-quot type texture-unit name dim -- texture-unit' quot )
|
|
{ name uniform-index } >quotation :> index-quot
|
|
{ index-quot value>>-quot bi* } >quotation :> pre-quot
|
|
|
|
type H{
|
|
{ bool-uniform { dim swap [ >c-bool ] int-array{ } map-as glUniform1iv } }
|
|
{ int-uniform { dim swap >int-array glUniform1iv } }
|
|
{ uint-uniform { dim swap >uint-array glUniform1uiv } }
|
|
{ float-uniform { dim swap >float-array glUniform1fv } }
|
|
|
|
{ bvec2-uniform { dim swap [ [ >c-bool ] map ] map int-array{ } concat-as glUniform2iv } }
|
|
{ ivec2-uniform { dim swap int-array{ } concat-as glUniform2i } }
|
|
{ uvec2-uniform { dim swap uint-array{ } concat-as glUniform2ui } }
|
|
{ vec2-uniform { dim swap float-array{ } concat-as glUniform2f } }
|
|
|
|
{ bvec3-uniform { dim swap [ [ >c-bool ] map ] map int-array{ } concat-as glUniform3iv } }
|
|
{ ivec3-uniform { dim swap int-array{ } concat-as glUniform3i } }
|
|
{ uvec3-uniform { dim swap uint-array{ } concat-as glUniform3ui } }
|
|
{ vec3-uniform { dim swap float-array{ } concat-as glUniform3f } }
|
|
|
|
{ bvec4-uniform { dim swap [ [ >c-bool ] map ] map int-array{ } concat-as glUniform4iv } }
|
|
{ ivec4-uniform { dim swap int-array{ } concat-as glUniform4iv } }
|
|
{ uvec4-uniform { dim swap uint-array{ } concat-as glUniform4uiv } }
|
|
{ vec4-uniform { dim swap float-array{ } concat-as glUniform4fv } }
|
|
|
|
{ mat2-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix2fv } }
|
|
{ mat2x3-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix2x3fv } }
|
|
{ mat2x4-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix2x4fv } }
|
|
|
|
{ mat3x2-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix3x2fv } }
|
|
{ mat3-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix3fv } }
|
|
{ mat3x4-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix3x4fv } }
|
|
|
|
{ mat4x2-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix4x2fv } }
|
|
{ mat4x3-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix4x3fv } }
|
|
{ mat4-uniform { [ dim 1 ] dip float-array{ } concat-as concat glUniformMatrix4fv } }
|
|
|
|
{ texture-uniform { drop dim dup iota [ texture-unit + ] int-array{ } map-as glUniform1iv } }
|
|
} at [ uniform invalid-uniform-type ] unless* >quotation :> value-quot
|
|
|
|
type uniform-type-texture-units dim * texture-unit +
|
|
pre-quot value-quot append ;
|
|
|
|
:: [bind-uniform-value] ( value>>-quot type texture-unit name -- texture-unit' quot )
|
|
{ name uniform-index } >quotation :> index-quot
|
|
{ index-quot value>>-quot bi* } >quotation :> pre-quot
|
|
|
|
type H{
|
|
{ bool-uniform [ >c-bool glUniform1i ] }
|
|
{ int-uniform [ glUniform1i ] }
|
|
{ uint-uniform [ glUniform1ui ] }
|
|
{ float-uniform [ glUniform1f ] }
|
|
|
|
{ bvec2-uniform [ [ >c-bool ] map first2 glUniform2i ] }
|
|
{ ivec2-uniform [ first2 glUniform2i ] }
|
|
{ uvec2-uniform [ first2 glUniform2ui ] }
|
|
{ vec2-uniform [ first2 glUniform2f ] }
|
|
|
|
{ bvec3-uniform [ [ >c-bool ] map first3 glUniform3i ] }
|
|
{ ivec3-uniform [ first3 glUniform3i ] }
|
|
{ uvec3-uniform [ first3 glUniform3ui ] }
|
|
{ vec3-uniform [ first3 glUniform3f ] }
|
|
|
|
{ bvec4-uniform [ [ >c-bool ] map first4 glUniform4i ] }
|
|
{ ivec4-uniform [ first4 glUniform4i ] }
|
|
{ uvec4-uniform [ first4 glUniform4ui ] }
|
|
{ vec4-uniform [ first4 glUniform4f ] }
|
|
|
|
{ mat2-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix2fv ] }
|
|
{ mat2x3-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix2x3fv ] }
|
|
{ mat2x4-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix2x4fv ] }
|
|
|
|
{ mat3x2-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix3x2fv ] }
|
|
{ mat3-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix3fv ] }
|
|
{ mat3x4-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix3x4fv ] }
|
|
|
|
{ mat4x2-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix4x2fv ] }
|
|
{ mat4x3-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix4x3fv ] }
|
|
{ mat4-uniform [ [ 1 1 ] dip float-array{ } concat-as glUniformMatrix4fv ] }
|
|
|
|
{ texture-uniform { drop texture-unit glUniform1i } }
|
|
} at [ uniform invalid-uniform-type ] unless* >quotation :> value-quot
|
|
|
|
type uniform-type-texture-units texture-unit +
|
|
pre-quot value-quot append ;
|
|
|
|
:: [bind-uniform-struct] ( value>>-quot type texture-unit name dim -- texture-unit' quot )
|
|
dim
|
|
[
|
|
iota
|
|
[ [ [ swap nth ] swap prefix ] map ]
|
|
[ [ number>string name "[" append "]." surround ] map ] bi
|
|
] [
|
|
{ [ ] }
|
|
name "." append 1array
|
|
] if* :> name-prefixes :> quot-prefixes
|
|
type all-uniform-tuple-slots :> uniforms
|
|
|
|
texture-unit quot-prefixes name-prefixes [| quot-prefix name-prefix |
|
|
uniforms name-prefix [bind-uniform-tuple]
|
|
quot-prefix prepend
|
|
] 2map :> value-cleave :> texture-unit'
|
|
|
|
texture-unit'
|
|
value>>-quot { value-cleave 2cleave } append ;
|
|
|
|
:: [bind-uniform] ( texture-unit uniform prefix -- texture-unit' quot )
|
|
prefix uniform name>> append hyphens>underscores :> name
|
|
uniform uniform-type>> :> type
|
|
uniform dim>> :> dim
|
|
uniform name>> reader-word 1quotation :> value>>-quot
|
|
|
|
value>>-quot type texture-unit name {
|
|
{ [ type uniform-type? dim and ] [ dim [bind-uniform-array] ] }
|
|
{ [ type uniform-type? dim not and ] [ [bind-uniform-value] ] }
|
|
[ dim [bind-uniform-struct] ]
|
|
} cond ;
|
|
|
|
:: [bind-uniform-tuple] ( texture-unit uniforms prefix -- texture-unit' quot )
|
|
texture-unit uniforms [ prefix [bind-uniform] ] map :> uniforms-cleave :> texture-unit'
|
|
|
|
texture-unit'
|
|
{ uniforms-cleave 2cleave } >quotation ;
|
|
|
|
:: [bind-uniforms] ( superclass uniforms -- quot )
|
|
superclass "uniform-tuple-texture-units" word-prop 0 or :> first-texture-unit
|
|
superclass \ bind-uniforms method :> next-method
|
|
first-texture-unit uniforms "" [bind-uniform-tuple] nip :> bind-quot
|
|
|
|
{ 2dup next-method } bind-quot [ ] append-as ;
|
|
|
|
: define-uniform-tuple-methods ( class superclass uniforms -- )
|
|
[
|
|
2drop
|
|
[ \ bind-uniform-textures create-method-in ]
|
|
[ [bind-uniform-textures] ] bi define
|
|
] [
|
|
[ \ bind-uniforms create-method-in ] 2dip
|
|
[bind-uniforms] define
|
|
] 3bi ;
|
|
|
|
: parse-uniform-tuple-definition ( -- class superclass uniforms )
|
|
CREATE-CLASS scan {
|
|
{ ";" [ uniform-tuple f ] }
|
|
{ "<" [ scan-word parse-definition [ first3 uniform boa ] map ] }
|
|
{ "{" [
|
|
uniform-tuple
|
|
\ } parse-until parse-definition swap prefix
|
|
[ first3 uniform boa ] map
|
|
] }
|
|
} case ;
|
|
|
|
: (define-uniform-tuple) ( class superclass uniforms -- )
|
|
{
|
|
[ [ uniform>slot ] map define-tuple-class ]
|
|
[
|
|
[ uniform-type-texture-units ]
|
|
[
|
|
[ [ uniform-type>> uniform-type-texture-units ] [ dim>> 1 or ] bi * ]
|
|
[ + ] map-reduce
|
|
] bi* +
|
|
"uniform-tuple-texture-units" set-word-prop
|
|
]
|
|
[ nip "uniform-tuple-slots" set-word-prop ]
|
|
[ define-uniform-tuple-methods ]
|
|
} 3cleave ;
|
|
|
|
: true-subclasses ( class -- seq )
|
|
[ subclasses ] keep [ = not ] curry filter ;
|
|
|
|
PRIVATE>
|
|
|
|
: define-uniform-tuple ( class superclass uniforms -- )
|
|
(define-uniform-tuple) ; inline
|
|
|
|
SYNTAX: UNIFORM-TUPLE:
|
|
parse-uniform-tuple-definition define-uniform-tuple ;
|
|
|
|
<PRIVATE
|
|
|
|
: bind-vertex-array ( vertex-array -- )
|
|
handle>> glBindVertexArray ;
|
|
|
|
: bind-unnamed-output-attachments ( framebuffer attachments -- )
|
|
[ gl-attachment ] with map
|
|
dup length 1 =
|
|
[ first glDrawBuffer ]
|
|
[ [ length ] [ >int-array ] bi glDrawBuffers ] if ;
|
|
|
|
: bind-named-output-attachments ( program-instance framebuffer attachments -- )
|
|
rot '[ first _ swap output-index ] sort-with [ second ] map
|
|
bind-unnamed-output-attachments ;
|
|
|
|
: bind-output-attachments ( program-instance framebuffer attachments -- )
|
|
dup first sequence?
|
|
[ bind-named-output-attachments ] [ [ drop ] 2dip bind-unnamed-output-attachments ] if ;
|
|
|
|
GENERIC: bind-transform-feedback-output ( output -- )
|
|
|
|
M: buffer bind-transform-feedback-output
|
|
[ GL_TRANSFORM_FEEDBACK_BUFFER 0 ] dip handle>> glBindBufferBase ; inline
|
|
|
|
M: buffer-range bind-transform-feedback-output
|
|
[ GL_TRANSFORM_FEEDBACK_BUFFER 0 ] dip
|
|
[ handle>> ] [ offset>> ] [ size>> ] tri glBindBufferRange ; inline
|
|
|
|
M: buffer-ptr bind-transform-feedback-output
|
|
buffer-ptr>range bind-transform-feedback-output ; inline
|
|
|
|
: gl-feedback-primitive-mode ( primitive-mode -- gl-mode )
|
|
{
|
|
{ points-mode [ GL_POINTS ] }
|
|
{ lines-mode [ GL_LINES ] }
|
|
{ line-strip-mode [ GL_LINES ] }
|
|
{ line-loop-mode [ GL_LINES ] }
|
|
{ triangles-mode [ GL_TRIANGLES ] }
|
|
{ triangle-strip-mode [ GL_TRIANGLES ] }
|
|
{ triangle-fan-mode [ GL_TRIANGLES ] }
|
|
} case ;
|
|
|
|
PRIVATE>
|
|
|
|
UNION: ?any-framebuffer any-framebuffer POSTPONE: f ;
|
|
UNION: transform-feedback-output buffer buffer-range POSTPONE: f ;
|
|
|
|
TUPLE: render-set
|
|
{ primitive-mode primitive-mode read-only }
|
|
{ vertex-array vertex-array read-only }
|
|
{ uniforms uniform-tuple read-only }
|
|
{ indexes vertex-indexes initial: T{ index-range } read-only }
|
|
{ instances ?integer initial: f read-only }
|
|
{ framebuffer ?any-framebuffer initial: system-framebuffer read-only }
|
|
{ output-attachments sequence initial: { default-attachment } read-only }
|
|
{ transform-feedback-output transform-feedback-output initial: f read-only } ;
|
|
|
|
: <render-set> ( x quot-assoc -- render-set )
|
|
render-set swap make-tuple ; inline
|
|
|
|
: 2<render-set> ( x y quot-assoc -- render-set )
|
|
render-set swap 2make-tuple ; inline
|
|
|
|
: 3<render-set> ( x y z quot-assoc -- render-set )
|
|
render-set swap 3make-tuple ; inline
|
|
|
|
: render ( render-set -- )
|
|
{
|
|
[ vertex-array>> program-instance>> handle>> glUseProgram ]
|
|
[
|
|
[ vertex-array>> program-instance>> ] [ uniforms>> ] bi
|
|
[ bind-uniform-textures ] [ bind-uniforms ] 2bi
|
|
]
|
|
[
|
|
framebuffer>>
|
|
[ GL_DRAW_FRAMEBUFFER swap framebuffer-handle glBindFramebuffer ]
|
|
[ GL_DRAW_FRAMEBUFFER 0 glBindFramebuffer GL_RASTERIZER_DISCARD glEnable ] if*
|
|
]
|
|
[
|
|
[ vertex-array>> program-instance>> ]
|
|
[ framebuffer>> ]
|
|
[ output-attachments>> ] tri
|
|
bind-output-attachments
|
|
]
|
|
[ vertex-array>> bind-vertex-array ]
|
|
[
|
|
dup transform-feedback-output>> [
|
|
[ primitive-mode>> gl-feedback-primitive-mode glBeginTransformFeedback ]
|
|
[ bind-transform-feedback-output ] bi*
|
|
] [ drop ] if*
|
|
]
|
|
|
|
[
|
|
[ primitive-mode>> ] [ indexes>> ] [ instances>> ] tri
|
|
[ render-vertex-indexes-instanced ]
|
|
[ render-vertex-indexes ] if*
|
|
]
|
|
|
|
[ transform-feedback-output>> [ glEndTransformFeedback ] when ]
|
|
[ framebuffer>> [ GL_RASTERIZER_DISCARD glDisable ] unless ]
|
|
} cleave ; inline
|
|
|