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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /devtools/client/shadereditor/test/doc_multiple-contexts.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'devtools/client/shadereditor/test/doc_multiple-contexts.html')
| -rw-r--r-- | devtools/client/shadereditor/test/doc_multiple-contexts.html | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/devtools/client/shadereditor/test/doc_multiple-contexts.html b/devtools/client/shadereditor/test/doc_multiple-contexts.html new file mode 100644 index 000000000..039ee62d0 --- /dev/null +++ b/devtools/client/shadereditor/test/doc_multiple-contexts.html @@ -0,0 +1,112 @@ +<!-- Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ --> +<!doctype html> + +<html> + <head> + <meta charset="utf-8"/> + <title>WebGL editor test page</title> + + <script id="shader-vs" type="x-shader/x-vertex"> + precision lowp float; + attribute vec3 aVertexPosition; + + void main(void) { + gl_Position = vec4(aVertexPosition, 1); + } + </script> + + <script id="shader-fs" type="x-shader/x-fragment"> + precision lowp float; + uniform vec3 uColor; + + void main(void) { + gl_FragColor = vec4(uColor, 1); + } + </script> + </head> + + <body> + <canvas id="canvas1" width="128" height="128"></canvas> + <canvas id="canvas2" width="128" height="128"></canvas> + + <script type="text/javascript;version=1.8"> + "use strict"; + + let canvas = [], gl = []; + let program = []; + let squareVerticesPositionBuffer = []; + let vertexPositionAttribute = []; + let colorUniform = []; + + window.onload = function() { + for (let i = 0; i < 2; i++) { + canvas[i] = document.querySelector("#canvas" + (i + 1)); + gl[i] = canvas[i].getContext("webgl", { preserveDrawingBuffer: true }); + gl[i].clearColor(0.0, 0.0, 0.0, 1.0); + + initProgram(i); + initBuffers(i); + drawScene(i); + } + } + + function initProgram(i) { + let vertexShader = getShader(gl[i], "shader-vs"); + let fragmentShader = getShader(gl[i], "shader-fs"); + + program[i] = gl[i].createProgram(); + gl[i].attachShader(program[i], vertexShader); + gl[i].attachShader(program[i], fragmentShader); + gl[i].linkProgram(program[i]); + + vertexPositionAttribute[i] = gl[i].getAttribLocation(program[i], "aVertexPosition"); + gl[i].enableVertexAttribArray(vertexPositionAttribute[i]); + + colorUniform[i] = gl[i].getUniformLocation(program[i], "uColor"); + } + + function getShader(gl, id) { + let script = document.getElementById(id); + let source = script.textContent; + let shader; + + if (script.type == "x-shader/x-fragment") { + shader = gl.createShader(gl.FRAGMENT_SHADER); + } else if (script.type == "x-shader/x-vertex") { + shader = gl.createShader(gl.VERTEX_SHADER); + } + + gl.shaderSource(shader, source); + gl.compileShader(shader); + + return shader; + } + + function initBuffers(i) { + squareVerticesPositionBuffer[i] = gl[i].createBuffer(); + gl[i].bindBuffer(gl[i].ARRAY_BUFFER, squareVerticesPositionBuffer[i]); + gl[i].bufferData(gl[i].ARRAY_BUFFER, new Float32Array([ + 1.0, 1.0, 0.0, + -1.0, 1.0, 0.0, + 1.0, -1.0, 0.0, + -1.0, -1.0, 0.0 + ]), gl[i].STATIC_DRAW); + } + + function drawScene(i) { + gl[i].clear(gl[i].COLOR_BUFFER_BIT); + + gl[i].bindBuffer(gl[i].ARRAY_BUFFER, squareVerticesPositionBuffer[i]); + gl[i].vertexAttribPointer(vertexPositionAttribute[i], 3, gl[i].FLOAT, false, 0, 0); + + gl[i].useProgram(program[i]); + gl[i].uniform3fv(colorUniform[i], i == 0 ? [1, 1, 0] : [0, 1, 1]); + gl[i].drawArrays(gl[i].TRIANGLE_STRIP, 0, 4); + + window.requestAnimationFrame(() => drawScene(i)); + } + </script> + </body> + +</html> |