luvcraft/fields.lisp
in-package#:luvcraft
luvcraft.world.fields:define-voxel-field:sky-light:site-kind:voxel-cell:value-type
unsigned-byte8
:quantity:quantity:sky-propagation-level:unit:one
:missing-value:unavailable:legal-valuesinteger015
:representation:u8-levelsluvcraft.world.fields:define-voxel-field:block-light:site-kind:voxel-cell:value-type
unsigned-byte8
:quantity:quantity:block-propagation-level:unit:one
:missing-value:unavailable:legal-valuesinteger015
:representation:u8-levelsdefunmake-block-mesh-vertex-product-layout
flet
projection
positionsoptions
luv.arithmetic:make-quantity-layout14
list
projection'
012
':quantity:world-position:unit:cell:tensor-order1
projection'
34
':quantity:tile-local-uv:unit:one:tensor-order1
projection'
5
':quantity:ambient-occlusion:unit:one
projection'
678
':quantity:world-direction:unit:one:tensor-order1
projection'
9
':quantity:sky-light-level:unit:one
projection'
10
':quantity:block-light-level:unit:one
projection'
11
':quantity:material-emission:unit:one
projection'
12
':quantity:atlas-tile-offset:unit:one
projection'
13
':quantity:packed-edge-shaping:unit:one
defmethodluv.arithmetic:value-declaration-for
name
eql:block-mesh-vertices
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
vectorsingle-float
:quantity-layout:source-form'block-mesh-vertices:type
vectorsingle-float
:repeated-product:stride14defunmake-frame-uniform-product-layout
Describe the semantic lanes in luvcraft's fixed 76-float frame block.
flet
projection
positionsoptions
luv.arithmetic:make-quantity-layout76
list
projection'
012
':quantity:world-position:unit:cell:tensor-order1
projection'
456
':quantity:world-direction:unit:one:tensor-order1
projection'
8910
':quantity:world-direction:unit:one:tensor-order1
projection'
121314
':quantity:world-direction:unit:one:tensor-order1
projection'
16
':quantity:projection-scale:unit:one
projection'
17
':quantity:projection-scale:unit:one
projection'
18
':quantity:projection-scale:unit:one
projection'
19
':quantity:view-distance:unit:cell
projection'
20
':quantity:view-distance:unit:cell
projection'
21
':quantity:view-distance:unit:cell
projection'
22
':quantity:sky-time:unit:second
projection'
23
':quantity:cloudiness:unit:one
projection'
242526
':quantity:world-direction:unit:one:tensor-order1
projection'
27
':quantity:day-factor:unit:one
projection'
282930
':quantity:linear-rgb:unit:one:tensor-order1
projection'
31
':quantity:sun-disc-coordinate:unit:one
projection'
323334
':quantity:linear-rgb:unit:one:tensor-order1
projection'
35
':quantity:target-pixel-extent:unit:one
projection'
363738
':quantity:linear-rgb:unit:one:tensor-order1
projection'
39
':quantity:target-pixel-extent:unit:one
projection'
404142
':quantity:linear-rgb:unit:one:tensor-order1
projection'
444546
':quantity:linear-rgb:unit:one:tensor-order1
projection'
47
':quantity:shadow-diagnostic:unit:one
projection'
4849
':quantity:shadow-uv:unit:one:tensor-order1:character:difference
projection'
50
':quantity:shadow-depth:unit:one:character:difference
projection'
51
':quantity:shadow-depth:unit:one:character:difference
projection'
52
':quantity:world-distance:unit:cell
projection'
53
':quantity:world-distance:unit:cell
projection'
54
':quantity:shadow-filter-radius:unit:one
projection'
55
':quantity:shadow-filter-radius:unit:one
projection'
56
':quantity:atlas-texel-width:unit:one
defunmake-camera-uniform-product-layout
Return the five-vec4 camera prefix of the full frame product.
defmethodluv.arithmetic:value-declaration-for
name
eql:camera-uniform-data
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
simple-arraysingle-float
:quantity-layout:source-form'20
defmethodluv.arithmetic:value-declaration-for
name
eql:frame-uniform-data
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
simple-arraysingle-float
:quantity-layout:source-form'76
frame-uniform-data:type
simple-arraysingle-float
:product76
012
world-position456
right-direction8910
up-direction121314
forward-direction161718
projection-scales192021
view-distances22
sky-time23
cloudiness242526
sun-direction27
day-factor282930
sun-color31
sun-disc-coordinate323334
zenith-color35
target-pixel-height363738
horizon-color39
target-pixel-width404142
ambient-color444546
fog-color47
shadow-diagnostic4849
shadow-uv5051
shadow-depth5253
shadow-world-distances5455
shadow-filter-radii56
atlas-texel-width60616263646566676869707172737475
representation-only-shadow-rowsdefunshader-input-product-layout
specification
Flatten location-ordered shader inputs into one packed product layout.
let
offset0
projectionsnil
dolist
input
sort
copy-list
#'<:key#'shader:shader-interface-locationshader:shader-specification-inputsspecification
let*
width
shader:shader-type-component-count
whenwhole
pushprojections
whenlayout
dolist
projection
luv.arithmetic:quantity-layout-projectionslayout
push
luv.arithmetic:make-quantity-projection
projectionsluv.arithmetic:quantity-projection-specificationprojection
defunmake-sky-vertex-product-layout
luv.arithmetic:make-quantity-layout3
list
luv.arithmetic:make-quantity-projection'
012
luv.arithmetic:make-declared-quantity-specification'
:quantity:clip-coordinate:unit:one:tensor-order1
defunmake-crosshair-vertex-product-layout
luv.arithmetic:make-quantity-layout6
list
luv.arithmetic:make-quantity-projection'
012
luv.arithmetic:make-declared-quantity-specification'
:quantity:clip-coordinate:unit:one:tensor-order1
luv.arithmetic:make-quantity-projection'
345
luv.arithmetic:make-declared-quantity-specification'
:quantity:linear-rgb:unit:one:tensor-order1
defunmake-cursor-vertex-product-layout
Describe a clip position and its cursor-local offset as one packed vertex.
luv.arithmetic:make-quantity-layout5
list
luv.arithmetic:make-quantity-projection'
012
luv.arithmetic:make-declared-quantity-specification'
:quantity:clip-coordinate:unit:one:tensor-order1
luv.arithmetic:make-quantity-projection'
34
luv.arithmetic:make-declared-quantity-specification'
:quantity:cursor-coordinate:unit:one:tensor-order1
defmethodluv.arithmetic:value-declaration-for
name
eql:sky-vertices
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
simple-arraysingle-float
:quantity-layout:source-form'9
defmethodluv.arithmetic:value-declaration-for
name
eql:crosshair-vertices
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
vectorsingle-float
:quantity-layout:source-form'crosshair-vertices:type
vectorsingle-float
:repeated-product:stride6defmethodluv.arithmetic:value-declaration-for
name
eql:cursor-vertices
declare
ignorename
load-time-value
luv.arithmetic:make-represented-value-declaration:representation-type'
vectorsingle-float
:quantity-layout:source-form'cursor-vertices:type
vectorsingle-float
:repeated-product:stride5defunensure-vertex-product-contract
Validate raw vertices against one declared CPU and shader input product.
let*
declaration
or
luv.arithmetic:value-declaration-fordeclaration-name
error"No vertex product declaration is published for ~S."declaration-name
unless
error"Vertex data ~S does not satisfy ~S for ~S."
type-ofvertices
declaration-nameunless
error"Vertex declaration ~S is not a repeated product."declaration-name
let
stride
luv.arithmetic:repeated-quantity-layout-stridelayout
unless
verticesluv.arithmetic:quantity-layout=
luv.arithmetic:repeated-quantity-layout-element-layoutlayout
error"Vertex semantic ABI mismatch for ~S against shader ~S."declaration-name
defmacro define-voxel-field
(name &key site-kind value-type quantity missing-value
legal-values representation)defun make-quantity-projection
(positions specification)defun make-declared-quantity-specification
(options &key (default-tensor-order 0))Parse one source declaration plist into a quantity specification. Return NIL when OPTIONS contains no quantity attributes. This is the common source seam used by arithmetic parameters, shader interfaces, and semantic storage declarations; callers retain ownership of their source-specific error conditions and…
defun make-quantity-layout
(extent projections)defgeneric value-declaration-for
(name)Return the represented-value declaration published by global NAME, or NIL.
defun make-represented-value-declaration
(&key representation-type quantity-specification quantity-layout source-form)defun make-repeated-quantity-layout
(element-layout &key stride)defclass frame
An explicitly owned AVFrame.
define-arithmetic-operator >=
Test whether one compatible scalar is at least another.
defun camera-uniform-data
(view previous inspection-parameters ink-strength player
&optional (bevel-width luft:+mesh-bevel-width+) (exposure 1.0f0))defun frame-uniform-data
(session width height &key camera-lanes)Pack the frame environment: camera lanes plus the evaluated sky. Lane order must match *FRAME-UNIFORM-MEMBERS* exactly; the construction-time check in BLOCK-WORLD-CAMERA-UNIFORM-SIZE keeps the two honest. CAMERA-LANES may replace the session camera's own five lanes with a camera expressed in some other space; the…
defun shader-input-product-layout
(specification)define-arithmetic-operator <
Test whether one compatible scalar is less than another.
defgeneric declaration-representation-type
(declaration)Return DECLARATION's backend or Common Lisp representation type, or NIL.
defgeneric declaration-quantity-specification
(declaration)Return DECLARATION's homogeneous quantity specification, or NIL.
defclass layout
How the children of a list are arranged.
defgeneric declaration-quantity-layout
(declaration)Return DECLARATION's heterogeneous quantity layout, or NIL.
define-arithmetic-operator +
Addition over compatible quantities.
defun ensure-vertex-product-contract
(vertices declaration-name vertex-count shader-specification)defclass declaration
PROPERTY: VALUES; -- the property a keyword, the values a list written space-separated.
define-arithmetic-operator or
Logical disjunction of tests and raw truth values.
defclass repeated-quantity-layout
A fixed product repeated through flat storage at a physical lane stride. The inherited extent and projections describe one stride period so existing projection tools continue to inspect an element. ELEMENT-LAYOUT retains the unpadded product definition; no runtime element object is implied.
define-arithmetic-operator =
Test whether two compatible scalars are equal.
define-arithmetic-operator *
Multiplication and scalar scaling.
defun quantity-layout=
(left right)
Luvcraft's dense voxel fields and packed product declarations.