AllenGeng/ocamlgithub · Datasets at Hugging Face

text stringlengths 12 786k
let tree = Node ( ' n ' , Node ( ' k ' , Node ( ' c ' , Node ( ' a ' , Empty , Empty ) , Node ( ' e ' , Node ( ' d ' , Empty , Empty ) , Node ( ' g ' , Empty , Empty ) ) ) , Node ( ' m ' , Empty , Empty ) ) , Node ( ' u '...
let ( ) = let result = tree_string tree in Printf . printf " % s \ n " result
type ' a node = \| Empty \| Node of ' a * ' a node * ' a node
let naive_pre_order ( x ' : a node ) : ' a list = let rec aux x = match x with \| Empty -> [ ] \| Node ( v , l , r ) -> v ( :: aux l ) ( @ aux r ) in aux x
let pre_order ( x ' : a node ) : ' a list = let rec aux l rs = match l with \| Empty -> begin match rs with \| [ ] -> [ ] \| r :: rs -> aux r rs end \| Node ( v , l , r ) -> v ( :: aux l ( r :: rs ) ) in aux x [ ]
let naive_post_order ( x ' : a node ) : ' a list = let rec aux x = match x with \| Empty -> [ ] \| Node ( v , l , r ) -> ( aux l ) ( @ aux r ) [ @ v ] in aux x
let post_order ( x ' : a node ) : ' a list = let rec aux r ls vs = match r with \| Empty -> begin match ls with \| [ ] -> vs \| l :: ls -> aux l ls vs end \| Node ( v , l , r ) -> aux r ( l :: ls ) ( v :: vs ) in aux x [ ] [ ]
let naive_in_order ( x ' : a node ) : ' a list = let rec aux x = match x with \| Empty -> [ ] \| Node ( v , l , r ) -> ( aux l ) ( @ v ( :: aux r ) ) in aux x
let in_order ( x ' : a node ) : ' a list = let rec aux l rs vs = match l with \| Empty -> begin match rs with \| [ ] -> [ ] \| r :: rs -> begin match vs with \| [ ] -> [ ] \| v :: vs -> v ( :: aux r rs vs ) end end \| Node ( v , l , r ) -> aux l ( r :: rs ) ( v :...
let level_order ( x ' : a node ) : ' a list = let q = Queue . create ( ) in let _ = Queue . add x q in let rec aux q = if Queue . is_empty q then [ ] else match Queue . take q with \| Empty -> aux q \| Node ( v , l , r ) -> let _ = Queue . add l q in let _ = Queue . add ...
let level_order_list ( x ' : a node ) : ' a list list = let q = Queue . create ( ) in let _ = Queue . add x q in let rec aux acc q curr next = if Queue . is_empty q then [ acc ] else match Queue . take q with \| Empty -> aux acc q curr next \| Node ( v , l , r ) -> let _ = Que...
module Impl = Snarky . Snark . Make ( Snarky . Backends . Mnt4 . Default )
let f __implicit2__ __implicit1__ ( x : ' x * ' y ) ( y : ' b ) b = let y = let typ x___2 = x___2 in Snarky . exists ( typ __implicit2__ ) ~ compute : ( let open As_prover in fun ( ) -> let typ x___1 = x___1 in As_prover . read ( typ __implicit1__ ) y ) in if b then x els...
let g __implicit4__ ( b : boolean ) ( x : field_var ) = ignore ( f { Snarky . Types . Typ . store = ( fun ( x0 , x1 ) -> Snarky . Typ_monads . Store . bind ( Typ . boolean . Snarky . Types . Typ . store x0 ) ~ f ( : fun x0 -> Snarky . Typ_monads . Store . b...
module Utils = struct let ( . ) # x f = f x let pp_opt pp ppf = function \| None -> ( ) \| Some x -> pp ppf x let debug fmt = Format . printf ( " Debug : " ^^ fmt ^^ " . " ) @ let ( ) <?> x s = match x with \| Ok ( r , x ) -> Format . printf " % a : % s . " ...
module Sdl = struct open Tsdl let ( ) <?> x s = match x with \| Ok x -> Format . printf " SDL : Success : % s . " @ s ; x \| Error _ -> Format . eprintf " SDL : Error : % s . " @ s ; exit 1 let ( ) = Sdl . ( init Init . ( video + events ) ) <?> " Sdl init " ...
module Instance = struct let extensions = A . of_list Ctypes . string [ " VK_KHR_surface " ; " VK_KHR_xlib_surface " ] let info = Vkt . Instance_create_info . make ~ flags : Vkt . Instance_create_flags . empty ~ enabled_extension_names : extensions ( ) ; ; debug " Info created...
module Device = struct let phy_devices = let d = Vkc . enumerate_physical_devices instance <?> " physical device " in debug " Number of devices : % d \ n " ( A . length d ) ; d let property device = debug " Device properties acquisition " ; let p = Vkc . get_physical_device_properties...
module Image = struct let surface_format = A . get Device . supported_formats 0 let format , colorspace = let open Vkt . Surface_format_khr in surface_format . # format , surface_format . # color_space let image_count , extent = let open Vkt . Surface_capabilities_khr in Device . capabilities...
module Pipeline = struct module Shaders = struct let frag = read_spirv " shaders / triangle / frag . spv " let vert = read_spirv " shaders / triangle / vert . spv " let shader_module_info s = let len = String . length s in let code = A . make Bt . uint_32_t ( len / Ctypes . ( sizeof ...
module Cmd = struct let framebuffer_info image = let images = A . of_list Vkt . Image_view . ctype [ image ] in Vkt . Framebuffer_create_info . make ~ render_pass : Pipeline . simple_render_pass ~ attachments : images ~ width : Image . extent . # Vkt . Extent_2d . width ~ height : Im...
module Render = struct let semaphore_info = Vkt . Semaphore_create_info . make ( ) let create_semaphore ( ) = Vkc . create_semaphore device semaphore_info ( ) <?> " Created semaphore " let im_semaphore = create_semaphore ( ) let render_semaphore = create_semaphore ( ) let wait_sems ...
module type M = sig type key type ' a t val empty : ' a t val is_empty : ' a t -> bool val add : key -> ' a -> ' a t -> ' a t val find : key -> ' a t -> ' a val remove : key -> ' a t -> ' a t val fold : ( key -> ' a -> ' b -> ' b ) -> ' a t -> ' b -> ' b val comp...
module type S = sig include M val mem : key -> ' a t -> bool val iter : ( key -> ' a -> unit ) -> ' a t -> unit val map : ( ' a -> ' b ) -> ' a t -> ' b t val mapi : ( key -> ' a -> ' b ) -> ' a t -> ' b t val keys : ' a t -> key list val data : ' a t -> ' a...
module Make ( M : M ) = struct type key = M . key list type ' a t = Node of ' a option * ' a t M . t let empty = Node ( None , M . empty ) let is_empty = function \| Node ( None , m1 ) -> M . is_empty m1 \| _ -> false let rec find l t = match ( l , t ) with \| [ ] , ...
let ( >>= ) x f = match x with Ok v -> f v \| Error _ as e -> e
let bigarray_create k len = Bigarray . ( Array1 . create k c_layout len )
let get_int = let a = bigarray_create Bigarray . int32 1 in fun f -> f a ; Int32 . to_int a . { 0 }
let set_int = let a = bigarray_create Bigarray . int32 1 in fun f i -> a . { 0 } <- Int32 . of_int i ; f a
let get_string len f = let a = bigarray_create Bigarray . char len in f a ; Gl . string_of_bigarray a
let glsl_version gl_version = match gl_version with
let vertex_shader v = str " # version % s core in vec3 vertex ; in vec3 color ; out vec4 v_color ; void main ( ) { v_color = vec4 ( color , 1 . 0 ) ; gl_Position = vec4 ( vertex , 1 . 0 ) ; } " v
let fragment_shader v = str " # version % s core in vec4 v_color ; out vec4 color ; void main ( ) { color = v_color ; } " v
let set_3d ba i x y z = let start = i * 3 in ba . { start } <- x ; ba . { start + 1 } <- y ; ba . { start + 2 } <- z
let vertices = let vs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d vs 0 ( - 0 . 8 ) ( - 0 . 8 ) 0 . 0 ; set_3d vs 1 0 . 8 ( - 0 . 8 ) 0 . 0 ; set_3d vs 2 0 . 0 0 . 8 0 . 0 ; vs
let colors = let cs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d cs 0 1 . 0 0 . 0 0 . 0 ; set_3d cs 1 0 . 0 1 . 0 0 . 0 ; set_3d cs 2 0 . 0 0 . 0 1 . 0 ; cs
let indices = let is = bigarray_create Bigarray . int8_unsigned 3 in set_3d is 0 0 1 2 ; is
let create_buffer b = let id = get_int ( Gl . gen_buffers 1 ) in let bytes = Gl . bigarray_byte_size b in Gl . bind_buffer Gl . array_buffer id ; Gl . buffer_data Gl . array_buffer bytes ( Some b ) Gl . static_draw ; id
let delete_buffer bid = set_int ( Gl . delete_buffers 1 ) bid
let create_geometry ( ) = let gid = get_int ( Gl . gen_vertex_arrays 1 ) in let iid = create_buffer indices in let vid = create_buffer vertices in let cid = create_buffer colors in let bind_attrib id loc dim typ = Gl . bind_buffer Gl . array_buffer id ; Gl . enable_vertex_attrib_array loc ; G...
let delete_geometry gid bids = set_int ( Gl . delete_vertex_arrays 1 ) gid ; List . iter delete_buffer bids ; Ok ( )
let compile_shader src typ = let get_shader sid e = get_int ( Gl . get_shaderiv sid e ) in let sid = Gl . create_shader typ in Gl . shader_source sid src ; Gl . compile_shader sid ; if get_shader sid Gl . compile_status = Gl . true_ then Ok sid else let len = get_shader sid Gl . info_log_leng...
let create_program glsl_v = compile_shader ( vertex_shader glsl_v ) Gl . vertex_shader >>= fun vid -> compile_shader ( fragment_shader glsl_v ) Gl . fragment_shader >>= fun fid -> let pid = Gl . create_program ( ) in let get_program pid e = get_int ( Gl . get_programiv pid e ) in Gl . a...
let delete_program pid = Gl . delete_program pid ; Ok ( )
let draw pid gid win = Gl . clear_color 0 . 0 . 0 . 1 . ; Gl . clear Gl . color_buffer_bit ; Gl . use_program pid ; Gl . bind_vertex_array gid ; Gl . draw_elements Gl . triangles 3 Gl . unsigned_byte ( ` Offset 0 ) ; Gl . bind_vertex_array 0 ; Sdl . gl_swap_window w...
let reshape win w h = Gl . viewport 0 0 w h
let pp_opengl_info ppf ( ) = let pp = Format . fprintf in let pp_opt ppf = function None -> pp ppf " error " \| Some s -> pp ppf " % s " s in pp ppf " [ @< v , " ; >@ pp ppf " Renderer [ @< v [ >@% a ] , " @@ pp_opt ( Gl . get_string Gl . renderer ) ; pp ppf " ...
let create_window ~ gl ( : maj , min ) = let w_atts = Sdl . Window . ( opengl + resizable ) in let w_title = Printf . sprintf " OpenGL % d . % d ( core profile ) " maj min in let set a v = Sdl . gl_set_attribute a v in set Sdl . Gl . context_profile_mask Sdl . Gl . context_p...
let destroy_window win ctx = Sdl . gl_delete_context ctx ; Sdl . destroy_window win ; Ok ( )
let event_loop win draw = let e = Sdl . Event . create ( ) in let key_scancode e = Sdl . Scancode . enum Sdl . Event . ( get e keyboard_scancode ) in let event e = Sdl . Event . ( enum ( get e typ ) ) in let window_event e = Sdl . Event . ( window_event_enum ( get e window_e...
let tri ~ gl ( : maj , min as gl ) = Sdl . init Sdl . Init . video >>= fun ( ) -> create_window ~ gl >>= fun ( win , ctx ) -> create_geometry ( ) >>= fun ( gid , bids ) -> create_program ( glsl_version gl ) >>= fun pid -> event_loop win ( draw pid gid ) >>= fun ( )...
let main ( ) = let exec = Filename . basename Sys . executable_name in let usage = str " Usage : % s [ OPTION ] \ n Tests Tgl3 . \ nOptions " : exec in let minor = ref 2 in let options = [ " - minor " , Arg . Set_int minor , " < x > use Use an OpenGL 3 . x context ( de...
let ( ) = main ( )
let ( >>= ) x f = match x with Ok v -> f v \| Error _ as e -> e
let bigarray_create k len = Bigarray . ( Array1 . create k c_layout len )
let get_int = let a = bigarray_create Bigarray . int32 1 in fun f -> f a ; Int32 . to_int a . { 0 }
let set_int = let a = bigarray_create Bigarray . int32 1 in fun f i -> a . { 0 } <- Int32 . of_int i ; f a
let get_string len f = let a = bigarray_create Bigarray . char len in f a ; Gl . string_of_bigarray a
let glsl_version gl_version = match gl_version with
let vertex_shader v = str " # version % s core in vec3 vertex ; in vec3 color ; out vec4 v_color ; void main ( ) { v_color = vec4 ( color , 1 . 0 ) ; gl_Position = vec4 ( vertex , 1 . 0 ) ; } " v
let fragment_shader v = str " # version % s core in vec4 v_color ; out vec4 color ; void main ( ) { color = v_color ; } " v
let set_3d ba i x y z = let start = i * 3 in ba . { start } <- x ; ba . { start + 1 } <- y ; ba . { start + 2 } <- z
let vertices = let vs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d vs 0 ( - 0 . 8 ) ( - 0 . 8 ) 0 . 0 ; set_3d vs 1 0 . 8 ( - 0 . 8 ) 0 . 0 ; set_3d vs 2 0 . 0 0 . 8 0 . 0 ; vs
let colors = let cs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d cs 0 1 . 0 0 . 0 0 . 0 ; set_3d cs 1 0 . 0 1 . 0 0 . 0 ; set_3d cs 2 0 . 0 0 . 0 1 . 0 ; cs
let indices = let is = bigarray_create Bigarray . int8_unsigned 3 in set_3d is 0 0 1 2 ; is
let create_buffer b = let id = get_int ( Gl . gen_buffers 1 ) in let bytes = Gl . bigarray_byte_size b in Gl . bind_buffer Gl . array_buffer id ; Gl . buffer_data Gl . array_buffer bytes ( Some b ) Gl . static_draw ; id
let delete_buffer bid = set_int ( Gl . delete_buffers 1 ) bid
let create_geometry ( ) = let gid = get_int ( Gl . gen_vertex_arrays 1 ) in let iid = create_buffer indices in let vid = create_buffer vertices in let cid = create_buffer colors in let bind_attrib id loc dim typ = Gl . bind_buffer Gl . array_buffer id ; Gl . enable_vertex_attrib_array loc ; G...
let delete_geometry gid bids = set_int ( Gl . delete_vertex_arrays 1 ) gid ; List . iter delete_buffer bids ; Ok ( )
let compile_shader src typ = let get_shader sid e = get_int ( Gl . get_shaderiv sid e ) in let sid = Gl . create_shader typ in Gl . shader_source sid src ; Gl . compile_shader sid ; if get_shader sid Gl . compile_status = Gl . true_ then Ok sid else let len = get_shader sid Gl . info_log_leng...
let create_program glsl_v = compile_shader ( vertex_shader glsl_v ) Gl . vertex_shader >>= fun vid -> compile_shader ( fragment_shader glsl_v ) Gl . fragment_shader >>= fun fid -> let pid = Gl . create_program ( ) in let get_program pid e = get_int ( Gl . get_programiv pid e ) in Gl . a...
let delete_program pid = Gl . delete_program pid ; Ok ( )
let draw pid gid win = Gl . clear_color 0 . 0 . 0 . 1 . ; Gl . clear Gl . color_buffer_bit ; Gl . use_program pid ; Gl . bind_vertex_array gid ; Gl . draw_elements Gl . triangles 3 Gl . unsigned_byte ( ` Offset 0 ) ; Gl . bind_vertex_array 0 ; Sdl . gl_swap_window w...
let reshape win w h = Gl . viewport 0 0 w h
let pp_opengl_info ppf ( ) = let pp = Format . fprintf in let pp_opt ppf = function None -> pp ppf " error " \| Some s -> pp ppf " % s " s in pp ppf " [ @< v , " ; >@ pp ppf " Renderer [ @< v [ >@% a ] , " @@ pp_opt ( Gl . get_string Gl . renderer ) ; pp ppf " ...
let create_window ~ gl ( : maj , min ) = let w_atts = Sdl . Window . ( opengl + resizable ) in let w_title = Printf . sprintf " OpenGL % d . % d ( core profile ) " maj min in let set a v = Sdl . gl_set_attribute a v in set Sdl . Gl . context_profile_mask Sdl . Gl . context_p...
let destroy_window win ctx = Sdl . gl_delete_context ctx ; Sdl . destroy_window win ; Ok ( )
let event_loop win draw = let e = Sdl . Event . create ( ) in let key_scancode e = Sdl . Scancode . enum Sdl . Event . ( get e keyboard_scancode ) in let event e = Sdl . Event . ( enum ( get e typ ) ) in let window_event e = Sdl . Event . ( window_event_enum ( get e window_e...
let tri ~ gl ( : maj , min as gl ) = Sdl . init Sdl . Init . video >>= fun ( ) -> create_window ~ gl >>= fun ( win , ctx ) -> create_geometry ( ) >>= fun ( gid , bids ) -> create_program ( glsl_version gl ) >>= fun pid -> event_loop win ( draw pid gid ) >>= fun ( )...
let main ( ) = let exec = Filename . basename Sys . executable_name in let usage = str " Usage : % s [ OPTION ] \ n Tests Tgl4 . \ nOptions " : exec in let minor = ref 0 in let options = [ " - minor " , Arg . Set_int minor , " < x > use Use an OpenGL 4 . x context ( de...
let ( ) = main ( )
let ( >>= ) x f = match x with Ok v -> f v \| Error _ as e -> e
let bigarray_create k len = Bigarray . ( Array1 . create k c_layout len )
let get_int = let a = bigarray_create Bigarray . int32 1 in fun f -> f a ; Int32 . to_int a . { 0 }
let set_int = let a = bigarray_create Bigarray . int32 1 in fun f i -> a . { 0 } <- Int32 . of_int i ; f a
let get_string len f = let a = bigarray_create Bigarray . char len in f a ; Gl . string_of_bigarray a
let vertex_shader = " # version 100 attribute vec3 vertex ; attribute vec3 color ; varying vec4 v_color ; void main ( ) { v_color = vec4 ( color , 1 . 0 ) ; gl_Position = vec4 ( vertex , 1 . 0 ) ; } "
let fragment_shader = " # version 100 precision highp float ; varying vec4 v_color ; void main ( ) { gl_FragColor = v_color ; } "
let set_3d ba i x y z = let start = i * 3 in ba . { start } <- x ; ba . { start + 1 } <- y ; ba . { start + 2 } <- z
let vertices = let vs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d vs 0 ( - 0 . 8 ) ( - 0 . 8 ) 0 . 0 ; set_3d vs 1 0 . 8 ( - 0 . 8 ) 0 . 0 ; set_3d vs 2 0 . 0 0 . 8 0 . 0 ; vs
let colors = let cs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d cs 0 1 . 0 0 . 0 0 . 0 ; set_3d cs 1 0 . 0 1 . 0 0 . 0 ; set_3d cs 2 0 . 0 0 . 0 1 . 0 ; cs
let indices = let is = bigarray_create Bigarray . int8_unsigned 3 in set_3d is 0 0 1 2 ; is
let create_buffer b = let id = get_int ( Gl . gen_buffers 1 ) in let bytes = Gl . bigarray_byte_size b in Gl . bind_buffer Gl . array_buffer id ; Gl . buffer_data Gl . array_buffer bytes ( Some b ) Gl . static_draw ; id
let delete_buffer bid = set_int ( Gl . delete_buffers 1 ) bid
let create_geometry ( ) = let iid = create_buffer indices in let vid = create_buffer vertices in let cid = create_buffer colors in Ok ( iid , vid , cid )
let delete_geometry ( iid , vid , cid ) = delete_buffer iid ; delete_buffer vid ; delete_buffer cid ; Ok ( )
let compile_shader src typ = let get_shader sid e = get_int ( Gl . get_shaderiv sid e ) in let sid = Gl . create_shader typ in Gl . shader_source sid src ; Gl . compile_shader sid ; if get_shader sid Gl . compile_status = Gl . true_ then Ok sid else let len = get_shader sid Gl . info_log_leng...
let create_program ( ) = compile_shader vertex_shader Gl . vertex_shader >>= fun vid -> compile_shader fragment_shader Gl . fragment_shader >>= fun fid -> let pid = Gl . create_program ( ) in let get_program pid e = get_int ( Gl . get_programiv pid e ) in Gl . attach_shader pid vid ; Gl ....
let delete_program pid = Gl . delete_program pid ; Ok ( )
let draw pid ( iid , vid , cid ) win = let bind_attrib id loc dim typ = Gl . bind_buffer Gl . array_buffer id ; Gl . enable_vertex_attrib_array loc ; Gl . vertex_attrib_pointer loc dim typ false 0 ( ` Offset 0 ) ; in Gl . clear_color 0 . 0 . 0 . 1 . ; Gl . clear Gl . ...

let tree = Node ( ' n ' , Node ( ' k ' , Node ( ' c ' , Node ( ' a ' , Empty , Empty ) , Node ( ' e ' , Node ( ' d ' , Empty , Empty ) , Node ( ' g ' , Empty , Empty ) ) ) , Node ( ' m ' , Empty , Empty ) ) , Node ( ' u '...

let ( ) = let result = tree_string tree in Printf . printf " % s \ n " result

type ' a node = | Empty | Node of ' a * ' a node * ' a node

let naive_pre_order ( x ' : a node ) : ' a list = let rec aux x = match x with | Empty -> [ ] | Node ( v , l , r ) -> v ( :: aux l ) ( @ aux r ) in aux x

let pre_order ( x ' : a node ) : ' a list = let rec aux l rs = match l with | Empty -> begin match rs with | [ ] -> [ ] | r :: rs -> aux r rs end | Node ( v , l , r ) -> v ( :: aux l ( r :: rs ) ) in aux x [ ]

let naive_post_order ( x ' : a node ) : ' a list = let rec aux x = match x with | Empty -> [ ] | Node ( v , l , r ) -> ( aux l ) ( @ aux r ) [ @ v ] in aux x

let post_order ( x ' : a node ) : ' a list = let rec aux r ls vs = match r with | Empty -> begin match ls with | [ ] -> vs | l :: ls -> aux l ls vs end | Node ( v , l , r ) -> aux r ( l :: ls ) ( v :: vs ) in aux x [ ] [ ]

let naive_in_order ( x ' : a node ) : ' a list = let rec aux x = match x with | Empty -> [ ] | Node ( v , l , r ) -> ( aux l ) ( @ v ( :: aux r ) ) in aux x

let level_order ( x ' : a node ) : ' a list = let q = Queue . create ( ) in let _ = Queue . add x q in let rec aux q = if Queue . is_empty q then [ ] else match Queue . take q with | Empty -> aux q | Node ( v , l , r ) -> let _ = Queue . add l q in let _ = Queue . add ...

let level_order_list ( x ' : a node ) : ' a list list = let q = Queue . create ( ) in let _ = Queue . add x q in let rec aux acc q curr next = if Queue . is_empty q then [ acc ] else match Queue . take q with | Empty -> aux acc q curr next | Node ( v , l , r ) -> let _ = Que...

module Impl = Snarky . Snark . Make ( Snarky . Backends . Mnt4 . Default )

let f __implicit2__ __implicit1__ ( x : ' x * ' y ) ( y : ' b ) b = let y = let typ x___2 = x___2 in Snarky . exists ( typ __implicit2__ ) ~ compute : ( let open As_prover in fun ( ) -> let typ x___1 = x___1 in As_prover . read ( typ __implicit1__ ) y ) in if b then x els...

let g __implicit4__ ( b : boolean ) ( x : field_var ) = ignore ( f { Snarky . Types . Typ . store = ( fun ( x0 , x1 ) -> Snarky . Typ_monads . Store . bind ( Typ . boolean . Snarky . Types . Typ . store x0 ) ~ f ( : fun x0 -> Snarky . Typ_monads . Store . b...

module Utils = struct let ( . ) # x f = f x let pp_opt pp ppf = function | None -> ( ) | Some x -> pp ppf x let debug fmt = Format . printf ( " Debug : " ^^ fmt ^^ " . " ) @ let ( ) <?> x s = match x with | Ok ( r , x ) -> Format . printf " % a : % s . " ...

module Sdl = struct open Tsdl let ( ) <?> x s = match x with | Ok x -> Format . printf " SDL : Success : % s . " @ s ; x | Error _ -> Format . eprintf " SDL : Error : % s . " @ s ; exit 1 let ( ) = Sdl . ( init Init . ( video + events ) ) <?> " Sdl init " ...

module Instance = struct let extensions = A . of_list Ctypes . string [ " VK_KHR_surface " ; " VK_KHR_xlib_surface " ] let info = Vkt . Instance_create_info . make ~ flags : Vkt . Instance_create_flags . empty ~ enabled_extension_names : extensions ( ) ; ; debug " Info created...

module Device = struct let phy_devices = let d = Vkc . enumerate_physical_devices instance <?> " physical device " in debug " Number of devices : % d \ n " ( A . length d ) ; d let property device = debug " Device properties acquisition " ; let p = Vkc . get_physical_device_properties...

module Image = struct let surface_format = A . get Device . supported_formats 0 let format , colorspace = let open Vkt . Surface_format_khr in surface_format . # format , surface_format . # color_space let image_count , extent = let open Vkt . Surface_capabilities_khr in Device . capabilities...

module Pipeline = struct module Shaders = struct let frag = read_spirv " shaders / triangle / frag . spv " let vert = read_spirv " shaders / triangle / vert . spv " let shader_module_info s = let len = String . length s in let code = A . make Bt . uint_32_t ( len / Ctypes . ( sizeof ...

module Cmd = struct let framebuffer_info image = let images = A . of_list Vkt . Image_view . ctype [ image ] in Vkt . Framebuffer_create_info . make ~ render_pass : Pipeline . simple_render_pass ~ attachments : images ~ width : Image . extent . # Vkt . Extent_2d . width ~ height : Im...

module Render = struct let semaphore_info = Vkt . Semaphore_create_info . make ( ) let create_semaphore ( ) = Vkc . create_semaphore device semaphore_info ( ) <?> " Created semaphore " let im_semaphore = create_semaphore ( ) let render_semaphore = create_semaphore ( ) let wait_sems ...

module type M = sig type key type ' a t val empty : ' a t val is_empty : ' a t -> bool val add : key -> ' a -> ' a t -> ' a t val find : key -> ' a t -> ' a val remove : key -> ' a t -> ' a t val fold : ( key -> ' a -> ' b -> ' b ) -> ' a t -> ' b -> ' b val comp...

module type S = sig include M val mem : key -> ' a t -> bool val iter : ( key -> ' a -> unit ) -> ' a t -> unit val map : ( ' a -> ' b ) -> ' a t -> ' b t val mapi : ( key -> ' a -> ' b ) -> ' a t -> ' b t val keys : ' a t -> key list val data : ' a t -> ' a...

module Make ( M : M ) = struct type key = M . key list type ' a t = Node of ' a option * ' a t M . t let empty = Node ( None , M . empty ) let is_empty = function | Node ( None , m1 ) -> M . is_empty m1 | _ -> false let rec find l t = match ( l , t ) with | [ ] , ...

let ( >>= ) x f = match x with Ok v -> f v | Error _ as e -> e

let bigarray_create k len = Bigarray . ( Array1 . create k c_layout len )

let get_int = let a = bigarray_create Bigarray . int32 1 in fun f -> f a ; Int32 . to_int a . { 0 }

let set_int = let a = bigarray_create Bigarray . int32 1 in fun f i -> a . { 0 } <- Int32 . of_int i ; f a

let get_string len f = let a = bigarray_create Bigarray . char len in f a ; Gl . string_of_bigarray a

let glsl_version gl_version = match gl_version with

let vertex_shader v = str " # version % s core in vec3 vertex ; in vec3 color ; out vec4 v_color ; void main ( ) { v_color = vec4 ( color , 1 . 0 ) ; gl_Position = vec4 ( vertex , 1 . 0 ) ; } " v

let fragment_shader v = str " # version % s core in vec4 v_color ; out vec4 color ; void main ( ) { color = v_color ; } " v

let set_3d ba i x y z = let start = i * 3 in ba . { start } <- x ; ba . { start + 1 } <- y ; ba . { start + 2 } <- z

let vertices = let vs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d vs 0 ( - 0 . 8 ) ( - 0 . 8 ) 0 . 0 ; set_3d vs 1 0 . 8 ( - 0 . 8 ) 0 . 0 ; set_3d vs 2 0 . 0 0 . 8 0 . 0 ; vs

let colors = let cs = bigarray_create Bigarray . float32 ( 3 * 3 ) in set_3d cs 0 1 . 0 0 . 0 0 . 0 ; set_3d cs 1 0 . 0 1 . 0 0 . 0 ; set_3d cs 2 0 . 0 0 . 0 1 . 0 ; cs

let indices = let is = bigarray_create Bigarray . int8_unsigned 3 in set_3d is 0 0 1 2 ; is

let create_buffer b = let id = get_int ( Gl . gen_buffers 1 ) in let bytes = Gl . bigarray_byte_size b in Gl . bind_buffer Gl . array_buffer id ; Gl . buffer_data Gl . array_buffer bytes ( Some b ) Gl . static_draw ; id

let delete_buffer bid = set_int ( Gl . delete_buffers 1 ) bid

let create_geometry ( ) = let gid = get_int ( Gl . gen_vertex_arrays 1 ) in let iid = create_buffer indices in let vid = create_buffer vertices in let cid = create_buffer colors in let bind_attrib id loc dim typ = Gl . bind_buffer Gl . array_buffer id ; Gl . enable_vertex_attrib_array loc ; G...

let delete_geometry gid bids = set_int ( Gl . delete_vertex_arrays 1 ) gid ; List . iter delete_buffer bids ; Ok ( )

let compile_shader src typ = let get_shader sid e = get_int ( Gl . get_shaderiv sid e ) in let sid = Gl . create_shader typ in Gl . shader_source sid src ; Gl . compile_shader sid ; if get_shader sid Gl . compile_status = Gl . true_ then Ok sid else let len = get_shader sid Gl . info_log_leng...

let create_program glsl_v = compile_shader ( vertex_shader glsl_v ) Gl . vertex_shader >>= fun vid -> compile_shader ( fragment_shader glsl_v ) Gl . fragment_shader >>= fun fid -> let pid = Gl . create_program ( ) in let get_program pid e = get_int ( Gl . get_programiv pid e ) in Gl . a...

let delete_program pid = Gl . delete_program pid ; Ok ( )

let draw pid gid win = Gl . clear_color 0 . 0 . 0 . 1 . ; Gl . clear Gl . color_buffer_bit ; Gl . use_program pid ; Gl . bind_vertex_array gid ; Gl . draw_elements Gl . triangles 3 Gl . unsigned_byte ( ` Offset 0 ) ; Gl . bind_vertex_array 0 ; Sdl . gl_swap_window w...

let reshape win w h = Gl . viewport 0 0 w h

let pp_opengl_info ppf ( ) = let pp = Format . fprintf in let pp_opt ppf = function None -> pp ppf " error " | Some s -> pp ppf " % s " s in pp ppf " [ @< v , " ; >@ pp ppf " Renderer [ @< v [ >@% a ] , " @@ pp_opt ( Gl . get_string Gl . renderer ) ; pp ppf " ...

let create_window ~ gl ( : maj , min ) = let w_atts = Sdl . Window . ( opengl + resizable ) in let w_title = Printf . sprintf " OpenGL % d . % d ( core profile ) " maj min in let set a v = Sdl . gl_set_attribute a v in set Sdl . Gl . context_profile_mask Sdl . Gl . context_p...

let destroy_window win ctx = Sdl . gl_delete_context ctx ; Sdl . destroy_window win ; Ok ( )

let event_loop win draw = let e = Sdl . Event . create ( ) in let key_scancode e = Sdl . Scancode . enum Sdl . Event . ( get e keyboard_scancode ) in let event e = Sdl . Event . ( enum ( get e typ ) ) in let window_event e = Sdl . Event . ( window_event_enum ( get e window_e...

let tri ~ gl ( : maj , min as gl ) = Sdl . init Sdl . Init . video >>= fun ( ) -> create_window ~ gl >>= fun ( win , ctx ) -> create_geometry ( ) >>= fun ( gid , bids ) -> create_program ( glsl_version gl ) >>= fun pid -> event_loop win ( draw pid gid ) >>= fun ( )...

let main ( ) = let exec = Filename . basename Sys . executable_name in let usage = str " Usage : % s [ OPTION ] \ n Tests Tgl3 . \ nOptions " : exec in let minor = ref 2 in let options = [ " - minor " , Arg . Set_int minor , " < x > use Use an OpenGL 3 . x context ( de...

let ( ) = main ( )