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| author | Matt A. Tobin <email@mattatobin.com> | 2016-10-16 19:34:53 -0400 |
|---|---|---|
| committer | Matt A. Tobin <email@mattatobin.com> | 2016-10-16 19:34:53 -0400 |
| commit | 81805ce3f63e2e4a799bd54f174083c58a9b5640 (patch) | |
| tree | 6e13374b213ac9b2ae74c25d8aac875faf71fdd0 /toolkit/devtools/shadereditor/test/doc_blended-geometry.html | |
| parent | 28c8da71bf521bb3ee76f27b8a241919e24b7cd5 (diff) | |
| download | palemoon-gre-81805ce3f63e2e4a799bd54f174083c58a9b5640.tar.gz | |
Move Mozilla DevTools to Platform - Part 3: Merge the browser/devtools and toolkit/devtools adjusting for directory collisions
Diffstat (limited to 'toolkit/devtools/shadereditor/test/doc_blended-geometry.html')
| -rw-r--r-- | toolkit/devtools/shadereditor/test/doc_blended-geometry.html | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/toolkit/devtools/shadereditor/test/doc_blended-geometry.html b/toolkit/devtools/shadereditor/test/doc_blended-geometry.html new file mode 100644 index 000000000..75cad6dc7 --- /dev/null +++ b/toolkit/devtools/shadereditor/test/doc_blended-geometry.html @@ -0,0 +1,136 @@ +<!-- 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; + uniform float uDepth; + + void main(void) { + gl_Position = vec4(aVertexPosition, uDepth); + } + </script> + + <script id="shader-fs-0" type="x-shader/x-fragment"> + precision lowp float; + + void main(void) { + gl_FragColor = vec4(0.5, 0.5, 0.5, 1.0); + } + </script> + + <script id="shader-fs-1" type="x-shader/x-fragment"> + precision lowp float; + + void main(void) { + gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0); + } + </script> + </head> + + <body> + <canvas id="canvas" width="128" height="128"></canvas> + + <script type="text/javascript;version=1.8"> + "use strict"; + + let canvas, gl; + let program = []; + let squareVerticesPositionBuffer; + let vertexPositionAttribute = []; + let depthUniform = []; + + window.onload = function() { + canvas = document.querySelector("canvas"); + gl = canvas.getContext("webgl", { preserveDrawingBuffer: true }); + gl.clearColor(0.0, 0.0, 0.0, 1.0); + + initProgram(0); + initProgram(1); + initBuffers(); + drawScene(); + } + + function initProgram(i) { + let vertexShader = getShader("shader-vs"); + let fragmentShader = getShader("shader-fs-" + i); + + program[i] = gl.createProgram(); + gl.attachShader(program[i], vertexShader); + gl.attachShader(program[i], fragmentShader); + gl.linkProgram(program[i]); + + vertexPositionAttribute[i] = gl.getAttribLocation(program[i], "aVertexPosition"); + gl.enableVertexAttribArray(vertexPositionAttribute[i]); + + depthUniform[i] = gl.getUniformLocation(program[i], "uDepth"); + } + + function getShader(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() { + squareVerticesPositionBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, squareVerticesPositionBuffer); + gl.bufferData(gl.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.STATIC_DRAW); + } + + function drawScene() { + gl.clear(gl.COLOR_BUFFER_BIT); + + for (let i = 0; i < 2; i++) { + gl.bindBuffer(gl.ARRAY_BUFFER, squareVerticesPositionBuffer); + gl.vertexAttribPointer(vertexPositionAttribute[i], 3, gl.FLOAT, false, 0, 0); + + gl.useProgram(program[i]); + gl.uniform1f(depthUniform[i], i + 1); + blend(i); + gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4); + } + + window.requestAnimationFrame(drawScene); + } + + function blend(i) { + if (i == 0) { + gl.disable(gl.BLEND); + } + else if (i == 1) { + gl.enable(gl.BLEND); + gl.blendColor(0.5, 0, 0, 0.25); + gl.blendEquationSeparate( + gl.FUNC_REVERSE_SUBTRACT, gl.FUNC_SUBTRACT); + gl.blendFuncSeparate( + gl.CONSTANT_COLOR, gl.ONE_MINUS_CONSTANT_COLOR, + gl.ONE_MINUS_CONSTANT_COLOR, gl.CONSTANT_COLOR); + } + } + </script> + </body> + +</html> |