├── .gitignore ├── .travis.yml ├── COPYING ├── Package.swift ├── README.md └── sources ├── generator ├── gl.xml └── main.swift └── opengl ├── constants.swift ├── loader.swift └── opengl.swift /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | /.build 3 | /Packages 4 | /*.xcodeproj 5 | Package.resolved 6 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: generic 2 | sudo: required 3 | dist: trusty 4 | env: 5 | - SWIFT_BRANCH=swift-4.0-branch SWIFT_VERSION=swift-4.0-DEVELOPMENT-SNAPSHOT-2017-06-23-a 6 | install: 7 | - mkdir swift 8 | - curl https://swift.org/builds/$SWIFT_BRANCH/ubuntu1404/$SWIFT_VERSION/$SWIFT_VERSION-ubuntu14.04.tar.gz -s | tar xz -C swift &> /dev/null 9 | script: 10 | - env PATH=$(pwd)/swift/$SWIFT_VERSION-ubuntu14.04/usr/bin:$PATH swift build -c release 11 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Package.swift: -------------------------------------------------------------------------------- 1 | // swift-tools-version:4.0 2 | 3 | import PackageDescription 4 | 5 | let package = Package( 6 | name: "GL", 7 | products: [.library(name: "GL", targets: ["GL"]), 8 | .executable(name: "generator", targets: ["generator"])], 9 | dependencies: [.package(url: "https://github.com/kelvin13/swiftxml", .branch("master"))], 10 | targets: [.target(name: "GL" , dependencies: [] , path: "sources/opengl"), 11 | .target(name: "generator" , dependencies: ["XML"] , path: "sources/generator")], 12 | swiftLanguageVersions: [4] 13 | ) 14 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | [![Platforms](https://img.shields.io/badge/platform-linux-lightgrey.svg)](https://swift.org) 2 | [![Release tag](https://img.shields.io/github/release/kelvin13/swift-opengl.svg)](https://github.com/kelvin13/swift-opengl/releases) 3 | [![Build](https://travis-ci.org/kelvin13/swift-opengl.svg?branch=master)](https://travis-ci.org/kelvin13/swift-opengl) 4 | [![Issues](https://img.shields.io/github/issues/kelvin13/swift-opengl.svg)](https://github.com/kelvin13/swift-opengl/issues?state=open) 5 | [![Language](https://img.shields.io/badge/version-swift_4-ffa020.svg)](https://swift.org) 6 | [![License](https://img.shields.io/badge/license-GPL3-ff3079.svg)](https://github.com/kelvin13/swift-opengl/blob/master/COPYING) 7 | [![KK25](https://img.shields.io/badge/karlie-kloss-e030ff.svg)](https://www.google.com/search?q=karlie+kloss) 8 | 9 | # OpenGL 10 | 11 | An OpenGL function loader written in pure swift. To use it, `import GL` in your swift file. 12 | 13 | *OpenGL* is a function loader which allows you to call OpenGL GPU functions from swift programs. These functions are loaded lazily at runtime by *OpenGL*. *OpenGL* also diagnoses invalid OpenGL function calls due to the function not being available on a particular GPU and OpenGL version. *OpenGL* can load any OpenGL function up to OpenGL 4.5. 14 | 15 | *OpenGL* works on Linux; it’s untested on Mac OSX, but there is no reason it shouldn’t work. 16 | 17 | ## Functions 18 | 19 | *OpenGL* provides access to OpenGL functions both with labeled and unlabeled arguments. This can help you avoid common argument ordering bugs. 20 | 21 | ```swift 22 | glClearColor(0.15, 0.15, 0.15, 1) 23 | glClearColor(red: 0.15, green: 0.15, blue: 0.15, alpha: 1) 24 | ``` 25 | 26 | The function names are the same as the OpenGL C specification, and the argument labels are the same as the parameter names in the C specification, with two exceptions: `` `in`: `` has been renamed to `input:`, and `` `func`: `` has been renamed to `f:` to avoid conflicts with Swift keywords. 27 | 28 | ## Constants 29 | 30 | *OpenGL* imports OpenGL constants under the scope `GL`. Unless doing so would cause the constant’s name to start with a digit, the constant’s redundant `GL_` prefix is dropped. 31 | 32 | ```swift 33 | glBlendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA) 34 | ``` 35 | 36 | > Note: The `GL` scope is not the same as the module scope which is also called `GL`. The fully qualified name of an OpenGL enum or an OpenGL type is `GL.GL.__symbolname__`. The fully qualified name of an OpenGL function is just `GL.__functionname__`. 37 | 38 | All *OpenGL* constants are of one of the following types: `GL.Enum`, `GL.Bitfield`, or `GL.UInt64`. (`Int32`, `UInt32`, or `UInt64`, respectively.) 39 | 40 | ## Types 41 | 42 | *OpenGL* provides typealias definitions for OpenGL types. The typealiases are given Swifty names, and are also scoped to `GL`. 43 | 44 | ```swift 45 | var tex_id:GL.UInt = 0 46 | ``` 47 | 48 | | OpenGL C type | *OpenGL* Swift typealias | *OpenGL* Swift type | 49 | | ----------------- | ----------------- | ------------------------- | 50 | | GLboolean | GL.Bool | Bool | 51 | | GLdouble | GL.Double | Double | 52 | | GLclampd | GL.ClampDouble | Double | 53 | | GLfloat | GL.Float | Float | 54 | | GLclampf | GL.ClampFloat | Float | 55 | | GLbyte | GL.Byte | Int8 | 56 | | GLchar | GL.Char | Int8 | 57 | | GLcharARB | GL.CharARB | Int8 | 58 | | GLshort | GL.Short | Int16 | 59 | | GLint | GL.Int | Int32 | 60 | | GLsizei | GL.Size | Int32 | 61 | | GLenum | GL.Enum | Int32 | 62 | | GLfixed | GL.Fixed | Int32 | 63 | | GLclampx | GL.ClampX | Int32 | 64 | | GLint64 | GL.Int64 | Int64 | 65 | | GLint64EXT | GL.Int64EXT | Int64 | 66 | | GLintptr | GL.IntPointer | Int | 67 | | GLintptrARB | GL.IntPointerARB | Int | 68 | | GLsizeiptr | GL.SizePointer | Int | 69 | | GLsizeiptrARB | GL.SizePointerARB | Int | 70 | | GLvdpauSurfaceNV | GL.VdpauSurfaceNV | Int | 71 | | GLubyte | GL.UByte | UInt8 | 72 | | GLushort | GL.UShort | UInt16 | 73 | | GLhalfNV | GL.HalfNV | UInt16 | 74 | | GLuint | GL.UInt | UInt32 | 75 | | GLbitfield | GL.Bitfield | UInt32 | 76 | | GLuint64 | GL.UInt64 | UInt64 | 77 | | GLuint64EXT | GL.UInt64EXT | UInt64 | 78 | | GLhandleARB | GL.HandleARB | UnsafeMutableRawPointer? | 79 | | GLeglImageOES | GL.EGLImageOES | UnsafeMutableRawPointer? | 80 | | GLsync | GL.Sync | OpaquePointer? | 81 | -------------------------------------------------------------------------------- /sources/generator/main.swift: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright 2017, Kelvin Ma (“taylorswift”), kelvin13ma@gmail.com 3 | 4 | This program is free software: you can redistribute it and/or modify 5 | it under the terms of the GNU General Public License as published by 6 | the Free Software Foundation, either version 3 of the License, or 7 | (at your option) any later version. 8 | 9 | This program is distributed in the hope that it will be useful, 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | GNU General Public License for more details. 13 | 14 | You should have received a copy of the GNU General Public License 15 | along with this program. If not, see . 16 | */ 17 | 18 | import XML 19 | 20 | #if os(Linux) 21 | import Glibc 22 | 23 | #elseif os(OSX) 24 | import Darwin 25 | 26 | #else 27 | fatalError("Unsupported OS") 28 | 29 | #endif 30 | 31 | let DEFINITION_FILE_PATH:String = "sources/generator/gl.xml" 32 | 33 | let LICENSE:String = 34 | """ 35 | /* 36 | THIS FILE IS GENERATED. ALL MODIFICATIONS MAY BE LOST! 37 | 38 | Copyright 2017, Kelvin Ma (“taylorswift”), kelvin13ma@gmail.com 39 | 40 | This program is free software: you can redistribute it and/or modify 41 | it under the terms of the GNU General Public License as published by 42 | the Free Software Foundation, either version 3 of the License, or 43 | (at your option) any later version. 44 | 45 | This program is distributed in the hope that it will be useful, 46 | but WITHOUT ANY WARRANTY; without even the implied warranty of 47 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 48 | GNU General Public License for more details. 49 | 50 | You should have received a copy of the GNU General Public License 51 | along with this program. If not, see . 52 | */ 53 | """ 54 | 55 | extension String 56 | { 57 | init(_ buffer:[Unicode.Scalar]) 58 | { 59 | self.init(buffer.map(Character.init)) 60 | } 61 | 62 | var rstripped:String 63 | { 64 | var str:String = self 65 | while let c:Character = str.last 66 | { 67 | guard c == " " || c == "\n" 68 | else 69 | { 70 | break 71 | } 72 | 73 | str.removeLast() 74 | } 75 | 76 | return str 77 | } 78 | } 79 | 80 | enum Node:String, Equatable 81 | { 82 | case extensions, 83 | `extension`, 84 | require, 85 | commands, 86 | command, 87 | feature, 88 | remove, 89 | groups, 90 | group, 91 | enums, 92 | `enum`, 93 | param, 94 | proto, 95 | ptype, 96 | name, 97 | 98 | // unused 99 | types, 100 | type, 101 | apientry, 102 | glx, 103 | vecequiv, 104 | alias, 105 | unused, 106 | comment 107 | } 108 | 109 | func ~=(_ a:[Node], _ b:[Node]) -> Bool 110 | { 111 | return a == b 112 | } 113 | 114 | struct DefinitionParser:XMLParser 115 | { 116 | private 117 | enum Version:CustomStringConvertible 118 | { 119 | case gl(Int, Int), gles(Int, Int) 120 | 121 | var description:String 122 | { 123 | switch self 124 | { 125 | case .gl(let v1, let v2): 126 | return "OpenGL \(v1).\(v2)" 127 | case .gles(let v1, let v2): 128 | return "OpenGL ES \(v1).\(v2)" 129 | } 130 | } 131 | 132 | static 133 | func ==(_ a:Version, _ b:Version) -> Bool 134 | { 135 | switch a 136 | { 137 | case .gl(let v1, let v2): 138 | if case .gl(let u1, let u2) = b 139 | { 140 | return v1 == u1 && v2 == u2 141 | } 142 | else 143 | { 144 | return false 145 | } 146 | case .gles(let v1, let v2): 147 | if case .gles(let u1, let u2) = b 148 | { 149 | return v1 == u1 && v2 == u2 150 | } 151 | else 152 | { 153 | return false 154 | } 155 | } 156 | } 157 | } 158 | 159 | private 160 | enum Support:CustomStringConvertible 161 | { 162 | case added(Version), removed(Version), ext(String) 163 | 164 | var description:String 165 | { 166 | switch self 167 | { 168 | case .added(let version): 169 | return "Available since \(version)" 170 | case .removed(let version): 171 | return "Unavailable since \(version)" 172 | case .ext(let name): 173 | return "Available in extension '\(name)'" 174 | } 175 | } 176 | 177 | static 178 | func ==(_ a:Support, _ b:Support) -> Bool 179 | { 180 | switch a 181 | { 182 | case .added(let version1): 183 | if case .added(let version2) = b 184 | { 185 | return version1 == version2 186 | } 187 | else 188 | { 189 | return false 190 | } 191 | 192 | case .removed(let version1): 193 | if case .removed(let version2) = b 194 | { 195 | return version1 == version2 196 | } 197 | else 198 | { 199 | return false 200 | } 201 | 202 | case .ext: 203 | if case .ext = b 204 | { 205 | return true 206 | } 207 | else 208 | { 209 | return false 210 | } 211 | } 212 | } 213 | } 214 | 215 | private 216 | enum GLType:String 217 | { 218 | case none = "", 219 | GLbitfield, 220 | GLboolean, 221 | GLbyte, 222 | GLchar, 223 | GLcharARB, 224 | GLclampd, 225 | GLclampf, 226 | GLclampx, 227 | GLDEBUGPROC, 228 | GLDEBUGPROCAMD, 229 | GLDEBUGPROCARB, 230 | GLDEBUGPROCKHR, 231 | GLdouble, 232 | GLeglImageOES, 233 | GLenum, 234 | GLfixed, 235 | GLfloat, 236 | GLhalfNV, 237 | GLhandleARB, 238 | GLint, 239 | GLint64, 240 | GLint64EXT, 241 | GLintptr, 242 | GLintptrARB, 243 | GLshort, 244 | GLsizei, 245 | GLsizeiptr, 246 | GLsizeiptrARB, 247 | GLsync, 248 | GLubyte, 249 | GLuint, 250 | GLuint64, 251 | GLuint64EXT, 252 | GLushort, 253 | GLvdpauSurfaceNV, 254 | GLvoid, 255 | struct__cl_context = "struct _cl_context", 256 | struct__cl_event = "struct _cl_event", 257 | 258 | void = "void", 259 | unsafemutablerawpointer = "void *", 260 | unsafemutablepointer_u8 = "GLubyte *" 261 | 262 | var swift_type:String 263 | { 264 | switch self 265 | { 266 | case .GLboolean: 267 | return "GL.Bool" 268 | case .GLdouble: 269 | return "GL.Double" 270 | case .GLclampd: 271 | return "GL.ClampDouble" 272 | case .GLfloat: 273 | return "GL.Float" 274 | case .GLclampf: 275 | return "GL.ClampFloat" 276 | case .GLbyte: 277 | return "GL.Byte" 278 | case .GLchar: 279 | return "GL.Char" 280 | case .GLcharARB: 281 | return "GL.CharARB" 282 | case .GLshort: 283 | return "GL.Short" 284 | case .GLint: 285 | return "GL.Int" 286 | case .GLsizei: 287 | return "GL.Size" 288 | case .GLenum: 289 | return "GL.Enum" 290 | case .GLfixed: 291 | return "GL.Fixed" 292 | case .GLclampx: 293 | return "GL.ClampX" 294 | case .GLint64: 295 | return "GL.Int64" 296 | case .GLint64EXT: 297 | return "GL.Int64EXT" 298 | case .GLintptr: 299 | return "GL.IntPointer" 300 | case .GLintptrARB: 301 | return "GL.IntPointerARB" 302 | case .GLsizeiptr: 303 | return "GL.SizePointer" 304 | case .GLsizeiptrARB: 305 | return "GL.SizePointerARB" 306 | case .GLvdpauSurfaceNV: 307 | return "GL.VdpauSurfaceNV" 308 | case .GLubyte: 309 | return "GL.UByte" 310 | case .GLushort: 311 | return "GL.UShort" 312 | case .GLhalfNV: 313 | return "GL.HalfNV" 314 | case .GLuint: 315 | return "GL.UInt" 316 | case .GLbitfield: 317 | return "GL.Bitfield" 318 | case .GLuint64: 319 | return "GL.UInt64" 320 | case .GLuint64EXT: 321 | return "GL.UInt64EXT" 322 | 323 | case .GLDEBUGPROC: 324 | return "GL.DebugProc" 325 | case .GLDEBUGPROCAMD: 326 | return "GL.DebugProcAMD" 327 | case .GLDEBUGPROCARB: 328 | return "GL.DebugProcARB" 329 | case .GLDEBUGPROCKHR: 330 | return "GL.DebugProcKHR" 331 | 332 | case .GLhandleARB: 333 | return "GL.HandleARB" 334 | case .GLeglImageOES: 335 | return "GL.EGLImageOES" 336 | 337 | case .GLsync: 338 | return "GL.Sync" 339 | 340 | case .struct__cl_context, .struct__cl_event: 341 | return "OpaquePointer?" 342 | case .unsafemutablerawpointer: 343 | return "UnsafeMutableRawPointer?" 344 | case .unsafemutablepointer_u8: 345 | return "UnsafeMutablePointer?" 346 | case .void, .GLvoid: 347 | return "()" 348 | 349 | case .none: 350 | fatalError("unreachable") 351 | } 352 | } 353 | } 354 | 355 | private 356 | enum PointerType:String 357 | { 358 | case none = "", 359 | mutable = "*", 360 | mutable_raw = "void*", 361 | immutable = "const*", 362 | immutable_raw = "constvoid*", 363 | 364 | mutable_mutable_raw = "void**", 365 | mutable_immutable = "const**", 366 | mutable_immutable_raw = "constvoid**", 367 | immutable_immutable = "const*const*", 368 | immutable_immutable_raw = "constvoid*const*", 369 | 370 | array_2 = "[2]" 371 | } 372 | 373 | private 374 | struct CurrentCommand 375 | { 376 | var name:String? = nil, 377 | return_type:String = "", 378 | parameters:[Parameter] = [] 379 | } 380 | 381 | private 382 | struct Command 383 | { 384 | let name:String, 385 | return_type:GLType, 386 | parameters:[Parameter] 387 | 388 | init(_ command:CurrentCommand) 389 | { 390 | guard let name:String = command.name 391 | else 392 | { 393 | fatalError("command '' has no name") 394 | } 395 | 396 | guard let return_type:GLType = GLType(rawValue: command.return_type) 397 | else 398 | { 399 | fatalError("command '\(name)' has an invalid return type '\(command.return_type)'") 400 | } 401 | 402 | self.name = name 403 | self.return_type = return_type 404 | self.parameters = command.parameters 405 | } 406 | } 407 | 408 | private 409 | struct CurrentParameter 410 | { 411 | var name :String = "", 412 | type :String = "", 413 | pointer:String = "", 414 | group :String? = nil, 415 | length :String? = nil 416 | } 417 | 418 | private 419 | struct Parameter 420 | { 421 | let name:String, 422 | type:GLType 423 | 424 | private 425 | let pointer:PointerType, 426 | group :String?, 427 | length :String? 428 | 429 | var swift_type:String 430 | { 431 | switch self.pointer 432 | { 433 | case .none: 434 | return self.type.swift_type 435 | 436 | case .mutable: 437 | if self.type != .GLvoid 438 | { 439 | return "UnsafeMutablePointer<\(self.type.swift_type)>?" 440 | } 441 | fallthrough 442 | 443 | case .mutable_raw: 444 | return "UnsafeMutableRawPointer?" 445 | 446 | case .immutable, .array_2: 447 | return "UnsafePointer<\(self.type.swift_type)>?" 448 | 449 | case .immutable_raw: 450 | return "UnsafeRawPointer?" 451 | 452 | case .mutable_mutable_raw: 453 | return "UnsafeMutablePointer?" 454 | 455 | case .mutable_immutable: 456 | return "UnsafeMutablePointer?>?" 457 | 458 | case .mutable_immutable_raw: 459 | return "UnsafeMutablePointer?" 460 | 461 | case .immutable_immutable: 462 | return "UnsafePointer?>?" 463 | 464 | case .immutable_immutable_raw: 465 | return "UnsafePointer?" 466 | } 467 | } 468 | 469 | init(_ parameter:CurrentParameter) 470 | { 471 | guard !parameter.name.isEmpty 472 | else 473 | { 474 | fatalError("command '' has no name") 475 | } 476 | 477 | guard let param_type:GLType = GLType(rawValue: parameter.type) 478 | else 479 | { 480 | fatalError("parameter '\(parameter.name)' has an invalid type '\(parameter.type)'") 481 | } 482 | 483 | guard let pointer_type:PointerType = PointerType(rawValue: parameter.pointer) 484 | else 485 | { 486 | fatalError("parameter '\(parameter.name)' has an invalid pointer type '\(parameter.pointer)'") 487 | } 488 | 489 | // fix parameter names that are Swift keywords 490 | if parameter.name == "func" 491 | { 492 | self.name = "f" 493 | } 494 | else if parameter.name == "in" 495 | { 496 | self.name = "input" 497 | } 498 | else 499 | { 500 | self.name = parameter.name 501 | } 502 | self.type = param_type 503 | self.pointer = pointer_type 504 | self.group = parameter.group 505 | self.length = parameter.length 506 | } 507 | } 508 | 509 | private 510 | var path:[Node] = [], 511 | 512 | constants:[(String, String, String)] = [ ], 513 | commands:[Command] = [ ], 514 | command_support:[String: [Support]] = [:], 515 | 516 | //current_group:String = "", 517 | //groups:[String: [String]] = [:], 518 | 519 | current_constant_is_bitmask:Bool = false, 520 | 521 | current_command:CurrentCommand? = nil, 522 | current_param:CurrentParameter? = nil, 523 | current_version:Version? = nil, 524 | current_extension:Support? = nil 525 | 526 | mutating 527 | func handle_data(data:[Unicode.Scalar]) 528 | { 529 | let str:String = String(data) 530 | switch self.path 531 | { 532 | // it is important to note that return type declarations only ever have 533 | // “const” or “void” occur before the element appears, if any. 534 | // the “const” can be ignored, and the “void” will never be followed by 535 | // any element. 536 | case [Node.commands, Node.command, Node.proto]: 537 | self.current_command?.return_type += str.rstripped 538 | 539 | case [Node.commands, Node.command, Node.proto, Node.ptype]: 540 | self.current_command?.return_type = str 541 | 542 | case [.commands, .command, .proto, .name]: 543 | self.current_command?.name = str 544 | 545 | case [.commands, .command, .param]: 546 | self.current_param?.pointer += str.filter{ $0 != " " } 547 | 548 | case [.commands, .command, .param, .ptype]: 549 | self.current_param?.type = str 550 | 551 | case [.commands, .command, .param, .name]: 552 | self.current_param?.name = str 553 | 554 | default: 555 | break 556 | } 557 | } 558 | 559 | mutating 560 | func handle_tag_start(name:String, attributes:[String: String]) 561 | { 562 | guard name != "registry" 563 | else 564 | { 565 | return 566 | } 567 | 568 | guard let node_type:Node = Node(rawValue: name) 569 | else 570 | { 571 | print("unrecognized: \(name)") 572 | return 573 | } 574 | 575 | self.path.append(node_type) 576 | 577 | switch self.path 578 | { 579 | case [.extensions, .extension]: 580 | var extn:String = attributes["name"]! 581 | if extn.starts(with: "GL_") 582 | { 583 | extn.removeFirst(3) 584 | } 585 | self.current_extension = .ext(extn) 586 | 587 | case [.extensions, .extension, .require, .command]: 588 | let command:String = attributes["name"]! 589 | self.command_support[command, default: []].append(self.current_extension!) 590 | 591 | case [.feature]: 592 | guard let version_str:String = attributes["number"], 593 | let decimal:String.Index = version_str.index(of: "."), 594 | let v1:Int = Int(String(version_str[..) 770 | { 771 | fputs(LICENSE, stream) 772 | fputs(""" 773 | 774 | public 775 | enum GL 776 | { 777 | // note: GL.Int is Swift.Int32, not Swift.Int, and 778 | // GL.UInt is Swift.UInt32, not Swift.UInt 779 | public typealias Bool = Swift.Bool 780 | public typealias Double = Swift.Double 781 | public typealias ClampDouble = Swift.Double 782 | public typealias Float = Swift.Float 783 | public typealias ClampFloat = Swift.Float 784 | public typealias Byte = Swift.Int8 785 | public typealias Char = Swift.Int8 786 | public typealias CharARB = Swift.Int8 787 | public typealias Short = Swift.Int16 788 | public typealias Int = Swift.Int32 789 | public typealias Size = Swift.Int32 790 | public typealias Enum = Swift.Int32 791 | public typealias Fixed = Swift.Int32 792 | public typealias ClampX = Swift.Int32 793 | public typealias Int64 = Swift.Int64 794 | public typealias Int64EXT = Swift.Int64 795 | public typealias IntPointer = Swift.Int 796 | public typealias IntPointerARB = Swift.Int 797 | public typealias SizePointer = Swift.Int 798 | public typealias SizePointerARB = Swift.Int 799 | public typealias VdpauSurfaceNV = Swift.Int 800 | public typealias UByte = Swift.UInt8 801 | public typealias UShort = Swift.UInt16 802 | public typealias HalfNV = Swift.UInt16 803 | public typealias UInt = Swift.UInt32 804 | public typealias Bitfield = Swift.UInt32 805 | public typealias UInt64 = Swift.UInt64 806 | public typealias UInt64EXT = Swift.UInt64 807 | public typealias HandleARB = UnsafeMutableRawPointer? 808 | public typealias EGLImageOES = UnsafeMutableRawPointer? 809 | public typealias Sync = OpaquePointer? 810 | 811 | public typealias DebugProc = @convention(c) 812 | (Swift.Int32, Swift.Int32, Swift.UInt32, Swift.Int32, Swift.Int32, UnsafePointer?, UnsafeRawPointer?) -> () 813 | public typealias DebugProcARB = DebugProc 814 | public typealias DebugProcKHR = DebugProc 815 | 816 | public typealias DebugProcAMD = @convention(c) 817 | (Swift.Int32, Swift.Int32, Swift.Int32, Swift.Int32, UnsafePointer?, UnsafeMutableRawPointer?) -> () 818 | 819 | 820 | """, stream) 821 | 822 | var first:Bool = true 823 | for (name, int_type, value):(String, String, String) in self.constants 824 | { 825 | if first 826 | { 827 | fputs(" public static \n let ", stream) 828 | first = false 829 | } 830 | else 831 | { 832 | fputs(", \n ", stream) 833 | } 834 | 835 | fputs("\(name):Swift.\(int_type) = \(value)", stream) 836 | } 837 | fputs("\n}\n", stream) 838 | } 839 | 840 | func generate_loader(stream:UnsafeMutablePointer) 841 | { 842 | fputs(LICENSE, stream) 843 | fputs("\n\n", stream) 844 | 845 | let support_strs:[String] = Set(self.command_support.values.lazy.flatMap{ $0 }.map{ $0.description }).sorted() 846 | let str_indices:[String: Int] = Dictionary(uniqueKeysWithValues: support_strs.lazy.enumerated().map{ ($0.1, $0.0) }) 847 | 848 | var first:Bool = true 849 | for (i, support_str):(Int, String) in support_strs.enumerated() 850 | { 851 | if first 852 | { 853 | fputs("let ", stream) 854 | first = false 855 | } 856 | else 857 | { 858 | fputs(", \n ", stream) 859 | } 860 | 861 | fputs("ss\(i):String = \"\(support_str)\"", stream) 862 | } 863 | fputs(""" 864 | 865 | 866 | // OpenGL function loaders; functions are loaded lazily and replace 867 | // themselves with their loaded versions on first call 868 | 869 | """, stream) 870 | 871 | for command in self.commands 872 | { 873 | let arguments:String = command.parameters.map{ $0.name }.joined(separator: ", "), 874 | types:String = command.parameters.map{ $0.swift_type }.joined(separator: ", "), 875 | parameter_list:String = command.parameters.map{ "\($0.name):\($0.swift_type)" }.joined(separator: ", "), 876 | anon_list:String = command.parameters.map{ "_ \($0.name):\($0.swift_type)" }.joined(separator: ", "), 877 | 878 | ret:String = (command.return_type != .void && command.return_type != .GLvoid) ? 879 | " -> \(command.return_type.swift_type)" : "", 880 | support:String = self.command_support[command.name]! 881 | .map{ "ss\(str_indices[$0.description]!)" } 882 | .joined(separator: ", ") 883 | 884 | fputs(""" 885 | var fp_\(command.name):@convention(c) (\(types)) -> \(command.return_type.swift_type) = load_\(command.name) 886 | func load_\(command.name)(\(parameter_list))\(ret) 887 | { 888 | fp_\(command.name) = unsafeBitCast(get_fp(\"\(command.name)\", support: [\(support)]), to: Swift.type(of: fp_\(command.name))) 889 | \(ret.isEmpty ? "" : "return ")fp_\(command.name)(\(arguments)) 890 | } 891 | public 892 | func \(command.name)(\(parameter_list))\(ret) 893 | { 894 | \(ret.isEmpty ? "" : "return ")fp_\(command.name)(\(arguments)) 895 | } 896 | """, stream) 897 | 898 | if !command.parameters.isEmpty 899 | { 900 | fputs(""" 901 | 902 | public 903 | func \(command.name)(\(anon_list))\(ret) 904 | { 905 | \(ret.isEmpty ? "" : "return ")fp_\(command.name)(\(arguments)) 906 | } 907 | """, stream) 908 | } 909 | 910 | fputs("\n\n", stream) 911 | } 912 | } 913 | } 914 | 915 | var parser:DefinitionParser = DefinitionParser() 916 | parser.parse(path: DEFINITION_FILE_PATH) 917 | 918 | // write constants file 919 | guard let stream_constants:UnsafeMutablePointer = fopen("sources/opengl/constants.swift", "w") 920 | else 921 | { 922 | fatalError("failed to open stream") 923 | } 924 | parser.generate_constants(stream: stream_constants) 925 | 926 | // write loader file 927 | guard let stream_loader:UnsafeMutablePointer = fopen("sources/opengl/loader.swift", "w") 928 | else 929 | { 930 | fatalError("failed to open stream") 931 | } 932 | parser.generate_loader(stream: stream_loader) 933 | -------------------------------------------------------------------------------- /sources/opengl/opengl.swift: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright 2017, Kelvin Ma (“taylorswift”), kelvin13ma@gmail.com 3 | 4 | This program is free software: you can redistribute it and/or modify 5 | it under the terms of the GNU General Public License as published by 6 | the Free Software Foundation, either version 3 of the License, or 7 | (at your option) any later version. 8 | 9 | This program is distributed in the hope that it will be useful, 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | GNU General Public License for more details. 13 | 14 | You should have received a copy of the GNU General Public License 15 | along with this program. If not, see . 16 | */ 17 | 18 | /* 19 | public typealias GLboolean = Bool 20 | public typealias GLdouble = Double 21 | public typealias GLclampd = Double 22 | public typealias GLfloat = Float 23 | public typealias GLclampf = Float 24 | public typealias GLbyte = Int8 25 | public typealias GLchar = Int8 26 | public typealias GLcharARB = Int8 27 | public typealias GLshort = Int16 28 | public typealias GLint = Int32 29 | public typealias GLsizei = Int32 30 | public typealias GLenum = Int32 31 | public typealias GLfixed = Int32 32 | public typealias GLclampx = Int32 33 | public typealias GLint64 = Int64 34 | public typealias GLint64EXT = Int64 35 | public typealias GLintptr = Int 36 | public typealias GLintptrARB = Int 37 | public typealias GLsizeiptr = Int 38 | public typealias GLsizeiptrARB = Int 39 | public typealias GLvdpauSurfaceNV = Int 40 | public typealias GLubyte = UInt8 41 | public typealias GLushort = UInt16 42 | public typealias GLhalfNV = UInt16 43 | public typealias GLuint = UInt32 44 | public typealias GLbitfield = UInt32 45 | public typealias GLuint64 = UInt64 46 | public typealias GLuint64EXT = UInt64 47 | public typealias GLhandleARB = UnsafeMutableRawPointer? 48 | public typealias GLeglImageOES = UnsafeMutableRawPointer? 49 | public typealias GLsync = OpaquePointer? 50 | 51 | public typealias GLDebugProc = @convention(c) 52 | (Int32, Int32, UInt32, Int32, Int32, UnsafePointer?, UnsafeRawPointer?) -> Void 53 | public typealias GLDebugProcARB = GLDebugProc 54 | public typealias GLDebugProcKHR = GLDebugProc 55 | 56 | public typealias GLDebugProcAMD = @convention(c) 57 | (Int32, Int32, Int32, Int32, UnsafePointer?, UnsafeMutableRawPointer?) -> Void 58 | */ 59 | 60 | func get_fp(_ name:String, support:[String]) -> UnsafeMutableRawPointer 61 | { 62 | guard let fp:UnsafeMutableRawPointer = lookup_address(of: name) 63 | else 64 | { 65 | fatalError("failed to load function \(name)\n\(support.joined(separator: "\n"))") 66 | } 67 | return fp 68 | } 69 | 70 | #if os(Linux) 71 | import Glibc 72 | 73 | var glx_get_proc_address:(@convention(c) (UnsafePointer) -> UnsafeMutableRawPointer?)? = nil 74 | 75 | func lookup_address(of name:String) -> UnsafeMutableRawPointer? 76 | { 77 | if let glx_get_proc_address = glx_get_proc_address 78 | { 79 | return glx_get_proc_address(name) 80 | } 81 | 82 | guard let dlopenhandle:UnsafeMutableRawPointer = dlopen(nil, RTLD_LAZY | RTLD_LOCAL) 83 | else 84 | { 85 | fatalError("failed to obtain dynamic library handle") 86 | } 87 | if let fp:UnsafeMutableRawPointer = dlsym(dlopenhandle, "glXGetProcAddressARB") 88 | { 89 | glx_get_proc_address = unsafeBitCast(fp, to: type(of: glx_get_proc_address)) 90 | } 91 | 92 | if let glx_get_proc_address = glx_get_proc_address 93 | { 94 | return glx_get_proc_address(name) 95 | } 96 | 97 | if let fp:UnsafeMutableRawPointer = dlsym(dlopenhandle, "glXGetProcAddress") 98 | { 99 | glx_get_proc_address = unsafeBitCast(fp, to: type(of: glx_get_proc_address)) 100 | } 101 | 102 | if let glx_get_proc_address = glx_get_proc_address 103 | { 104 | return glx_get_proc_address(name) 105 | } 106 | 107 | fatalError("failed to find glXGetProcAddress") 108 | } 109 | 110 | #elseif os(OSX) 111 | import Darwin 112 | 113 | let framework:String = "/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL" 114 | var dlopenhandle:UnsafeMutableRawPointer? = nil 115 | 116 | func lookup_address(of name:String) -> UnsafeMutableRawPointer? 117 | { 118 | if let dlopenhandle:UnsafeMutableRawPointer = dlopenhandle 119 | { 120 | return dlsym(dlopenhandle, name) 121 | } 122 | 123 | dlopenhandle = dlopen(framework, RTLD_LAZY) 124 | 125 | if let dlopenhandle:UnsafeMutableRawPointer = dlopenhandle 126 | { 127 | return dlsym(dlopenhandle, name) 128 | } 129 | 130 | fatalError("failed to load opengl framework") 131 | } 132 | 133 | #else 134 | func lookup_address(of _:String) -> UnsafeMutableRawPointer? 135 | { 136 | fatalError("unsupported OS") 137 | } 138 | 139 | #endif 140 | --------------------------------------------------------------------------------