From b3950330e3351437f153c6c1debb3821d6e28864 Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Sat, 8 Dec 2018 12:39:18 +0100 Subject: Create Electron app --- src/view/renderer/renderer.ts | 99 ------------------------------------ src/view/renderer/shaders.ts | 79 ---------------------------- src/view/renderer/shaders/default.fs | 10 ---- src/view/renderer/shaders/default.vs | 13 ----- 4 files changed, 201 deletions(-) delete mode 100644 src/view/renderer/renderer.ts delete mode 100644 src/view/renderer/shaders.ts delete mode 100644 src/view/renderer/shaders/default.fs delete mode 100644 src/view/renderer/shaders/default.vs (limited to 'src/view/renderer') diff --git a/src/view/renderer/renderer.ts b/src/view/renderer/renderer.ts deleted file mode 100644 index 93f8589..0000000 --- a/src/view/renderer/renderer.ts +++ /dev/null @@ -1,99 +0,0 @@ -import { Shaders } from './shaders'; - -import { mat4, vec2 } from 'gl-matrix'; - -export class Renderer { - public readonly coordScale = 32; - private readonly viewScale = 2; - - private readonly gl: WebGLRenderingContext; - private readonly shaders: Shaders; - - private readonly center: vec2 = vec2.create(); - private readonly translation: vec2 = vec2.create(); - private readonly viewport: mat4 = mat4.create(); - - constructor(private readonly canvas: HTMLCanvasElement) { - this.gl = this.mkContext(); - - this.shaders = new Shaders(this.gl); - - this.gl.clearColor(0.0, 0.0, 0.0, 1.0); - - this.gl.enable(this.gl.BLEND); - this.gl.blendFunc(this.gl.ONE, this.gl.ONE_MINUS_SRC_ALPHA); - this.gl.pixelStorei(this.gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, 1); - - this.setSize(); - } - - public createBuffer(): WebGLBuffer { - const ret = this.gl.createBuffer(); - if (!ret) - throw new Error('unable to create buffer'); - - return ret; - } - - public getContext(): WebGLRenderingContext { - return this.gl; - } - - public getVertexPosLoc(): number { - return this.shaders.vertexPosLoc; - } - - public getTextureCoordLoc(): number { - return this.shaders.textureCoordLoc; - } - - public getSamplerLoc(): WebGLUniformLocation { - return this.shaders.samplerLoc; - } - - public setCenter(v: vec2|number[]) { - this.snapToGrid(this.center, v); - } - - public setTranslation(v: vec2|number[]) { - vec2.sub(this.translation, v, this.center); - this.snapToGrid(this.translation, this.translation); - this.gl.uniform2fv(this.shaders.translateLoc, this.translation); - } - - public clear(): void { - this.gl.clear(this.gl.COLOR_BUFFER_BIT); - - this.setTranslation([0, 0]); - } - - public snapToGrid(out: vec2, a: vec2|number[]): void { - vec2.scale(out, a, this.coordScale); - vec2.round(out, out); - vec2.scale(out, out, 1 / this.coordScale); - } - - private mkContext(): WebGLRenderingContext { - const gl = ( - this.canvas.getContext('webgl') || this.canvas.getContext('experimental-webgl') - ); - if (!gl) - throw new Error('unable to initialize WebGL context'); - - return gl; - } - - private setSize(): void { - const w = this.canvas.width; - const h = this.canvas.height; - - this.gl.viewport(0, 0, w, h); - this.clear(); - - const scale = this.viewScale * this.coordScale; - - mat4.identity(this.viewport); - mat4.scale(this.viewport, this.viewport, [2 * scale / w, -2 * scale / h, 1.0]); - this.gl.uniformMatrix4fv(this.shaders.viewportLoc, false, this.viewport); - } -} diff --git a/src/view/renderer/shaders.ts b/src/view/renderer/shaders.ts deleted file mode 100644 index 8fd1fda..0000000 --- a/src/view/renderer/shaders.ts +++ /dev/null @@ -1,79 +0,0 @@ -import fragmentShaderSrc from './shaders/default.fs'; -import vertexShaderSrc from './shaders/default.vs'; - -export class Shaders { - public readonly viewportLoc: WebGLUniformLocation; - public readonly translateLoc: WebGLUniformLocation; - - public readonly vertexPosLoc: number; - public readonly textureCoordLoc: number; - public readonly samplerLoc: WebGLUniformLocation; - - constructor(private readonly gl: WebGLRenderingContext) { - const shaderProgram = this.gl.createProgram(); - if (!shaderProgram) - throw new Error('Unable to create shader program'); - - const vertexShader = this.compileShader(this.gl.VERTEX_SHADER, vertexShaderSrc); - const fragmentShader = this.compileShader(this.gl.FRAGMENT_SHADER, fragmentShaderSrc); - - this.gl.attachShader(shaderProgram, vertexShader); - this.gl.attachShader(shaderProgram, fragmentShader); - - this.gl.linkProgram(shaderProgram); - if (!this.gl.getProgramParameter(shaderProgram, this.gl.LINK_STATUS)) { - const err = this.gl.getProgramInfoLog(shaderProgram); - - this.gl.deleteShader(vertexShader); - this.gl.deleteShader(fragmentShader); - this.gl.deleteProgram(shaderProgram); - - throw new Error('Unable to link shader: ' + err); - } - - this.gl.useProgram(shaderProgram); - - this.vertexPosLoc = this.getAttribLocation(shaderProgram, 'aVertexPos'); - this.gl.enableVertexAttribArray(this.vertexPosLoc); - - this.textureCoordLoc = this.getAttribLocation(shaderProgram, 'aTextureCoord'); - this.gl.enableVertexAttribArray(this.textureCoordLoc); - - this.viewportLoc = this.getUniformLocation(shaderProgram, 'uViewport'); - this.translateLoc = this.getUniformLocation(shaderProgram, 'uTranslate'); - this.samplerLoc = this.getUniformLocation(shaderProgram, 'uSampler'); - } - - private compileShader(type: number, src: string): WebGLShader { - const shader = this.gl.createShader(type); - if (!shader) - throw new Error('Unable to create shader'); - - this.gl.shaderSource(shader, src); - this.gl.compileShader(shader); - - if (!this.gl.getShaderParameter(shader, this.gl.COMPILE_STATUS)) { - const err = this.gl.getShaderInfoLog(shader); - this.gl.deleteShader(shader); - throw new Error('Unable to compile shader: ' + err); - } - - return shader; - } - - private getAttribLocation(program: WebGLProgram, name: string): number { - const ret = this.gl.getAttribLocation(program, name); - if (ret < 0) - throw new Error("unable to get location of attribute '" + name + "'"); - - return ret; - } - - private getUniformLocation(program: WebGLProgram, name: string): WebGLUniformLocation { - const ret = this.gl.getUniformLocation(program, name); - if (!ret) - throw new Error("unable to get location of uniform '" + name + "'"); - - return ret; - } -} diff --git a/src/view/renderer/shaders/default.fs b/src/view/renderer/shaders/default.fs deleted file mode 100644 index 2c8ad15..0000000 --- a/src/view/renderer/shaders/default.fs +++ /dev/null @@ -1,10 +0,0 @@ -precision highp float; - -varying vec2 vTextureCoord; - -uniform sampler2D uSampler; - - -void main(void) { - gl_FragColor = texture2D(uSampler, vTextureCoord); -} diff --git a/src/view/renderer/shaders/default.vs b/src/view/renderer/shaders/default.vs deleted file mode 100644 index 4715a17..0000000 --- a/src/view/renderer/shaders/default.vs +++ /dev/null @@ -1,13 +0,0 @@ -attribute vec2 aVertexPos; -attribute vec2 aTextureCoord; - -uniform mat4 uViewport; -uniform vec2 uTranslate; - -varying highp vec2 vTextureCoord; - - -void main(void) { - gl_Position = uViewport * vec4(aVertexPos + uTranslate, 0.0, 1.0); - vTextureCoord = aTextureCoord; -} -- cgit v1.2.3