Lisp-to-GLSL translation works!
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5BEBEEAB2C73D520
1 changed files with 294 additions and 142 deletions
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@ -12,14 +12,6 @@
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else if (consp form)
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do (replace-xref-vars (cdr form) vars replace-fun)))
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(defun collect-shader-vars (forms)
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(loop for elt on forms
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for form = (car elt)
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if (symbolp form)
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collect form
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else if (consp form)
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nconc (collect-shader-vars (cdr form))))
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(defvar *vert-builtins* '((*vertex-id* . "gl_VertexID")
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(*instance-id* . "gl_InstanceID")
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(*draw-id* . "gl_DrawID")
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@ -42,35 +34,35 @@
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(*viewport-index* . "gl_ViewportIndex")
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;; out
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(*frag-depth* . "gl_FragDepth")
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(*sample-mask* . "gl_SampleMask")))
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(*sample-mask* . "gl_SampleMask")))
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(defvar *infix-ops* '((+ "+" t)
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(- "-" t)
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(* "*" t)
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(/ "/" t)
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(mod "%" t)
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(= "==" t)
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(eq "==" nil)
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(eql "==" nil)
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(equal "==" nil)
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(/= "!=" nil)
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(< "<" t)
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(> ">" t)
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(<= "<=" t)
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(>= ">=" t)
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(<< "<<" nil)
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(>> ">>" nil)
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(ash "<<" nil)
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(logand "&" t)
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(logior "|" t)
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(logxor "^" t)
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(and "&&" t)
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(- "-" t)
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(* "*" t)
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(/ "/" t)
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(mod "%" t)
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(= "==" t)
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(eq "==" nil)
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(eql "==" nil)
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(equal "==" nil)
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(/= "!=" nil)
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(< "<" t)
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(> ">" t)
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(<= "<=" t)
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(>= ">=" t)
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(<< "<<" nil)
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(>> ">>" nil)
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(ash "<<" nil)
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(logand "&" t)
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(logior "|" t)
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(logxor "^" t)
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(and "&&" t)
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(or "||" t)))
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(defvar *types* '((:void . "void")
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(:boolean . "bool")
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(:integer . "int")
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(:unsigned-integer . "uint")
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(:bool . "bool")
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(:int . "int")
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(:uint . "uint")
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(:float . "float")
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(:double . "double")
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(:vec2 . "vec2")
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@ -79,15 +71,15 @@
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(:double-vec2 . "dvec2")
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(:double-vec3 . "dvec3")
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(:double-vec4 . "dvec4")
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(:boolean-vec2 . "bvec2")
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(:boolean-vec3 . "bvec3")
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(:boolean-vec4 . "bvec4")
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(:integer-vec2 . "ivec2")
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(:integer-vec3 . "ivec3")
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(:integer-vec4 . "ivec4")
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(:unsigned-vec2 . "uvec2")
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(:unsigned-vec3 . "uvec3")
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(:unsigned-vec4 . "uvec4")
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(:bool-vec2 . "bvec2")
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(:bool-vec3 . "bvec3")
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(:bool-vec4 . "bvec4")
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(:int-vec2 . "ivec2")
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(:int-vec3 . "ivec3")
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(:int-vec4 . "ivec4")
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(:uint-vec2 . "uvec2")
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(:uint-vec3 . "uvec3")
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(:uint-vec4 . "uvec4")
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(:mat2 . "mat2")
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(:mat3 . "mat3")
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(:mat4 . "mat4")
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@ -108,8 +100,75 @@
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(:depth-cube-sampler . "samplerCubeShadow")
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(:array-cube-sampler . "samplerCubeArray")
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(:depth-array-cube-sampler . "samplerCubeArrayShadow")
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(:buffer-sampler . "samplerBuffer")
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))
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(:buffer-sampler . "samplerBuffer")))
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(defvar *shader-funs* '((bool . "bool")
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(int . "int")
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(uint . "uint")
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(float . "float")
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(double . "double")
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(vec2 . "vec2")
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(vec3 . "vec3")
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(vec4 . "vec4")
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(radians . "radians")
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(degrees . "degrees")
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(sin . "sin")
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(cos . "cos")
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(tan . "tan")
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(asin . "asin")
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(acos . "acos")
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(atan . "atan")
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(sinh . "sinh")
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(cosh . "cosh")
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(tanh . "tanh")
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(asinh . "asinh")
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(acosh . "acosh")
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(atanh . "atanh")
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(expt . "pow")
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(exp . "exp")
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(log . "log")
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(sqrt . "sqrt")
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(abs . "abs")
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(signum . "sign")
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(floor . "floor")
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(ffloor . "floor")
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(truncate . "trunc")
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(ftruncate . "trunc")
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(round . "round")
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(fround . "round")
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(ceiling . "ceil")
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(fceiling . "ceil")
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(mod . "mod")
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(min . "min")
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(max . "max")
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(linear-blend . "mix")
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(step . "step")
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(smooth-step . "smoothstep")
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(float-nan-p . "isnan")
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(float-infinity-p . "isinf")
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(vlength . "length")
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(vdistance . "distance")
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(v. . "dot")
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(vc . "cross")
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(v2norm . "normalize")
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(vforward . "faceforward")
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(vreflect . "reflect")
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(vrefract . "refract")
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(mtranspose . "transpose")
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(mdet . "determinant")
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(minv . "inverse")
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(v< . "lessThan")
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(v<= . "lessThanEqual")
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(v> . "greaterThan")
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(v>= . "greaterThanEqual")
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(v= . "equal")
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(v/= . "notEqual")
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(texture-size . "textureSize")
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(texture-lod . "textureQueryLod")
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(texture-levels . "textureQueryLevels")
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(texture-samples . "textureSamples")
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(sample-texture . "texture")
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(sample-texture-raw . "texelFetch")))
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(defun swizzlep (sym)
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(let ((sym-str (string-downcase (symbol-name sym))))
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@ -118,8 +177,21 @@
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always (member c '(#\x #\y #\z #\w) :test #'char=))
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(subseq sym-str 1))))
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(defun conv-shader-form (form funs vars)
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(flet ((conv-form (x) (conv-shader-form x funs vars)))
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(defun conv-shader-type (type)
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(or (cdr (assoc type *types*))
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(error "Invalid type specifier: ~S" type)))
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(defvar *shader-var-suffix* 0)
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(defun conv-shader-var (sym &optional gen-suffix)
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(concatenate 'string
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(substitute-if-not #\_ (lambda (c) (or (alpha-char-p c) (digit-char-p c)))
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(remove #\- (string-downcase (string-capitalize (symbol-name sym)) :end 1)))
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(if gen-suffix
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(write-to-string (incf *shader-var-suffix*))
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"")))
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(defun conv-shader-form (form vars funs)
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(flet ((conv-form (x) (conv-shader-form x vars funs)))
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(etypecase form
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(cons
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(let* ((sym (car form))
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@ -190,15 +262,6 @@
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(format nil "~A.~A"
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(conv-form (first args))
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swizzle))
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;; need this for (for)
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((eq sym 'declare-var)
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(unless (and (<= 1 (length args) 2) (= (length (first args)) 2))
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(error "Invalid # of args for shader declare-var"))
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(format nil "~A ~A~:[~; = ~A~]"
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(or (cdr (assoc (cadar args) *types*)) (error "Invalid type specifier: ~S" (second args)))
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(conv-form (caar args))
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(= (length args) 2)
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(conv-form (second args))))
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(t
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(format nil "~A(~{~A~^, ~})"
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(or (cdr (assoc sym funs)) (error "Invalid shader fun: ~S" sym))
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@ -208,95 +271,158 @@
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(integer (format nil "~D" form))
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(float (format nil "~F" form)))))
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(defun conv-shader-stmt (stmt funs vars returnp)
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(labels ((conv-form (x) (conv-shader-form x funs vars))
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(conv-stmt (x r) (conv-shader-stmt x funs vars r))
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(defun conv-shader-stmt (stmt vars funs returnp)
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(labels ((conv-form (x) (conv-shader-form x vars funs))
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(conv-stmt (x r) (conv-shader-stmt x vars funs r))
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(loop-conv-stmts (list r)
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(loop for x on list
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collect (conv-stmt (car x) (and r (not (cdr x)))))))
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(if (consp stmt)
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(let* ((sym (car stmt))
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(args (cdr stmt)))
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(case sym
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((progn)
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(format nil "{~%~{~A~}}~%"
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(loop-conv-stmts args returnp)))
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((if)
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(unless (<= 2 (length args) 3)
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(error "Invalid # of args for shader if"))
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(format nil "if (~A) ~{~%~A~^else~}"
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(conv-form (first args))
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(loop-conv-stmts (rest args) returnp)))
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;; handle both forms in one case clause
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((when unless)
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(unless (>= (length args) 2)
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(error "Invalid # of args for shader when/unless"))
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(format nil "if (~:[~;!(~]~A~2:*~:[~;)~]~1*) {~%~{~A~}}~%"
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(eq sym 'unless)
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(conv-form (first args))
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(loop-conv-stmts (rest args) returnp)))
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((cond)
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(unless (>= (length args) 1)
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(error "Invalid # of args for shader cond"))
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(format nil "~{~:[if (~A) ~;~1*~]{~%~{~A~}}~^ else ~}~%"
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(loop for clause in args
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nconc (list (eq (first clause) t)
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(conv-form (first clause))
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(loop-conv-stmts (rest clause) returnp)))))
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((case)
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(unless (>= (length args) 2)
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(error "Invalid # of args for shader case"))
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(format nil "switch (~A) {~%~{~:[~{case ~A:~%~}~;default:~%~1*~]~{~A~}break;~%~}}~%"
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(conv-form (first args))
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(loop for clause in (rest args)
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nconc (list (eq (car clause) t)
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(if (listp (car clause))
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(loop for x in (car clause) collect (conv-form x))
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(list (conv-form (car clause))))
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(loop-conv-stmts (cdr clause) returnp)))))
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((return)
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(unless (<= 0 (length args) 1)
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(error "Invalid # of args for shader return"))
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(format nil "return~:[~; ~A~];~%"
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args
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(and args (conv-form (first args)))))
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((break continue discard)
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(when args
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(error "Invalid # of args for shader break"))
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(format nil "~(~A~);~%" sym))
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((while)
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(unless (>= (length args) 1)
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(error "Invalid # of args for shader while"))
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(format nil "while (~A) {~%~{~A~}}~%"
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(conv-form (first args))
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(loop-conv-stmts (rest args))))
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((for)
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(unless (and (>= (length args) 1) (= (length (first args)) 3))
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(error "Invalid # of args for shader for"))
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(format nil "for (~A;~A;~A) {~%~{~A~}}~%"
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(conv-form (caar args))
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(conv-form (cadar args))
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(conv-form (caddar args))
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(loop-conv-stmts (cdr args) returnp)))
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((let*)
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(conv-stmt `(progn
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,@(loop for x in (first args)
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if (consp (car x))
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collect `(declare-var ,@x)
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else
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collect `(declare-var ,x))
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,@(rest args))
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returnp))
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((setf)
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(unless (= (mod (length args) 2) 0)
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(error "Invalid # of args for shader setf"))
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(format nil "~{~A = ~A;~%~}"
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(loop for x in args collect (conv-form x))))
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(t
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(format nil "~:[~;return ~]~A;~%" returnp (conv-form stmt)))))
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;; something else
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(format nil "~:[~;return ~]~A;~%" returnp (conv-form stmt)))
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))
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(let* ((sym (when (consp stmt) (car stmt)))
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(args (when (consp stmt) (cdr stmt))))
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(case sym
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((progn)
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(format nil "{~%~{~A~}}~%"
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(loop-conv-stmts args returnp)))
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((if)
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(unless (<= 2 (length args) 3)
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(error "Invalid # of args for shader if"))
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(format nil "if (~A) ~{~%~A~^else~}"
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(conv-form (first args))
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(loop-conv-stmts (rest args) returnp)))
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;; handle both forms in one case clause
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((when unless)
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(unless (>= (length args) 2)
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(error "Invalid # of args for shader when/unless"))
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(format nil "if (~:[~;!(~]~A~2:*~:[~;)~]~1*) {~%~{~A~}}~%"
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(eq sym 'unless)
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(conv-form (first args))
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(loop-conv-stmts (rest args) returnp)))
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((cond)
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(unless (>= (length args) 1)
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(error "Invalid # of args for shader cond"))
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(format nil "~{~:[if (~A) ~;~1*~]{~%~{~A~}}~^ else ~}~%"
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(loop for clause in args
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nconc (list (eq (first clause) t)
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(conv-form (first clause))
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(loop-conv-stmts (rest clause) returnp)))))
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((case)
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(unless (>= (length args) 2)
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(error "Invalid # of args for shader case"))
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(format nil "switch (~A) {~%~{~:[~{case ~A:~%~}~;default:~%~1*~]~{~A~}break;~%~}}~%"
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(conv-form (first args))
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(loop for clause in (rest args)
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nconc (list (eq (car clause) t)
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(if (listp (car clause))
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(loop for x in (car clause) collect (conv-form x))
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(list (conv-form (car clause))))
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(loop-conv-stmts (cdr clause) returnp)))))
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((return)
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(unless (<= 0 (length args) 1)
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(error "Invalid # of args for shader return"))
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(format nil "return~:[~; ~A~];~%"
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args
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(and args (conv-form (first args)))))
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((break continue discard)
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(when args
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(error "Invalid # of args for shader break"))
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(format nil "~(~A~);~%" sym))
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((while)
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(unless (>= (length args) 1)
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(error "Invalid # of args for shader while"))
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(format nil "while (~A) {~%~{~A~}}~%"
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(conv-form (first args))
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(loop-conv-stmts (rest args) returnp)))
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((dotimes)
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(unless (and (>= (length args) 1) (= (length (first args)) 2))
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(error "Invalid # of args for shader dotimes"))
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(let ((new-vars (cons (cons (caar args) (conv-shader-var (caar args) t)) vars)))
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(format nil "for (int ~A = 0; ~1:*~A < ~A; ~2:*~A++~1*) {~%~{~A~}}~%"
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(conv-shader-form (caar args) new-vars funs)
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(conv-shader-form (cadar args) new-vars funs)
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(loop for x on (cdr args)
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collect (conv-shader-stmt (car x) new-vars funs
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(and returnp (not (cdr x))))))))
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((for)
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(unless (and (>= (length args) 1) (= (length (first args)) 3))
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(error "Invalid # of args for shader for"))
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(format nil "for (~A;~A;~A) {~%~{~A~}}~%"
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(conv-form (caar args))
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(conv-form (cadar args))
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(conv-form (caddar args))
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(loop-conv-stmts (cdr args) returnp)))
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((let let*)
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(unless (>= (length args) 1)
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(error "Invalid # of args for shader let"))
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(let ((new-vars (nconc (loop for decl in (first args)
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if (consp (car decl))
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collect (cons (caar decl) (conv-shader-var (caar decl) t))
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else
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collect (cons (car decl) (conv-shader-var (car decl) t)))
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vars)))
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(format nil "{~%~{~A ~A~:[~; = ~A~];~%~}~{~A~}}~%"
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(loop for decl in (first args)
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if (consp (car decl))
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nconc (list
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(conv-shader-type (cadar decl))
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(conv-shader-form (caar decl) new-vars funs)
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t (conv-shader-form (cadr decl) new-vars funs))
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else
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nconc (list
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(conv-shader-type (cadr decl))
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(conv-shader-form (car decl) new-vars funs)
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nil))
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(loop for x on (rest args)
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collect (conv-shader-stmt (car x) new-vars funs
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(and returnp (not (cdr x))))))))
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((setf)
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(unless (= (mod (length args) 2) 0)
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(error "Invalid # of args for shader setf"))
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(format nil "~{~A = ~A;~%~}"
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(loop for x in args collect (conv-form x))))
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(t
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(format nil "~:[~;return ~]~A;~%" returnp (conv-form stmt)))))))
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|
||||
(defun conv-shader-fun (name return-type params body vars funs)
|
||||
(let ((new-vars (nconc (loop for decl in params
|
||||
collect (cons (car decl) (conv-shader-var (car decl))))
|
||||
vars)))
|
||||
(format nil "~A ~A(~{~A ~A~^, ~}) {~%~{~A~}}"
|
||||
(conv-shader-type return-type) name
|
||||
(loop for decl in params
|
||||
nconc (list (conv-shader-type (cadr decl))
|
||||
(conv-shader-form (car decl) new-vars funs)))
|
||||
(loop for x on body
|
||||
collect (conv-shader-stmt (car x) new-vars funs
|
||||
(not (or (cdr x) (eq return-type :void))))))))
|
||||
|
||||
(defun conv-shader-io
|
||||
(mode name &key type
|
||||
(location nil)
|
||||
(component nil)
|
||||
(binding nil)
|
||||
(top-left-origin-p nil)
|
||||
(pixel-coords-p nil)
|
||||
&allow-other-keys)
|
||||
(format nil "~:[~;~1:*layout(~{~A~^, ~}) ~]~(~A~) ~A ~A;~%"
|
||||
(loop for val in (list location component binding top-left-origin-p pixel-coords-p)
|
||||
for key in (list "location" "component" "binding" "origin_upper_left" "pixel_center_integer")
|
||||
if (eq val t)
|
||||
collect key
|
||||
else if val
|
||||
collect (format nil "~A=~D" key val))
|
||||
mode (conv-shader-type type) (conv-shader-var name)))
|
||||
|
||||
(defun conv-shader-part (name part version in-vars out-vars uniform-vars funs)
|
||||
(apply #'concatenate 'string
|
||||
(format nil "#version ~D core~%// GLSL-ified Lisp shader: ~S~S~%" version name part)
|
||||
(nconc
|
||||
(loop for var in in-vars
|
||||
collect (apply #'conv-shader-io :in var))
|
||||
(loop for var in out-vars
|
||||
collect (apply #'conv-shader-io :out var))
|
||||
(loop for var in uniform-vars
|
||||
collect (apply #'conv-shader-io :uniform var))
|
||||
funs)))
|
||||
|
||||
(defun transpile-shader (name &key
|
||||
version
|
||||
|
|
@ -320,8 +446,34 @@
|
|||
inter-vars)
|
||||
(push `(setf ,new-var ,orig-var) vert-body)
|
||||
new-var)))))
|
||||
`(:in ,vert-inputs :inter ,inter-vars :out ,frag-outputs :uniform ,uniform-vars
|
||||
:vert ,vert-body :frag ,frag-body))
|
||||
(let* ((vert-vars (nconc (loop for var-entry in (append inter-vars vert-inputs uniform-vars)
|
||||
collect (cons (car var-entry) (conv-shader-var (car var-entry))))
|
||||
*vert-builtins*))
|
||||
(frag-vars (nconc (loop for var-entry in (append frag-outputs inter-vars uniform-vars)
|
||||
collect (cons (car var-entry) (conv-shader-var (car var-entry))))
|
||||
*frag-builtins*))
|
||||
(vert-uniforms ()) (frag-uniforms ())
|
||||
vert-glsl frag-glsl)
|
||||
(replace-xref-vars vert-body uniform-vars
|
||||
(lambda (var-entry)
|
||||
(pushnew var-entry vert-uniforms)
|
||||
(car var-entry)))
|
||||
(replace-xref-vars frag-body uniform-vars
|
||||
(lambda (var-entry)
|
||||
(pushnew var-entry frag-uniforms)
|
||||
(car var-entry)))
|
||||
(setf vert-glsl
|
||||
(conv-shader-part name :vert version
|
||||
vert-inputs inter-vars vert-uniforms
|
||||
(list (conv-shader-fun "main" :void () vert-body vert-vars *shader-funs*)))
|
||||
frag-glsl
|
||||
(conv-shader-part name :frag version
|
||||
inter-vars frag-outputs frag-uniforms
|
||||
(list (conv-shader-fun "main" :void () frag-body frag-vars *shader-funs*))))
|
||||
`(:vert ,vert-glsl :frag ,frag-glsl
|
||||
(:in ,vert-inputs :inter ,inter-vars :out ,frag-outputs :uniform ,uniform-vars
|
||||
:version ,version :vert ,vert-body :frag ,frag-body))))
|
||||
|
||||
|
||||
(defmacro define-shader (name (&key
|
||||
((:in (&rest vert-inputs)) ())
|
||||
|
|
|
|||
Loading…
Reference in a new issue