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<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL BindAttribLocation Long Names Conformance Tests</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<canvas style="border: 1px solid black;" id="canvas" width="50" height="50"></canvas>
<script id="vshader" type="text/something-not-javascript">
attribute vec4 vPosition$(suffix);
attribute vec4 vColor$(suffix);
varying vec4 color;
void main()
{
gl_Position = vPosition$(suffix);
color = vColor$(suffix);
}
</script>
<script id="fshader" type="text/something-not-javascript">
precision mediump float;
varying vec4 color;
void main()
{
gl_FragColor = color;
}
</script>
<script>
"use strict";
description("This test checks using long names with bindAttribLocation work.");
debug("");
debug("Canvas.getContext");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas");
shouldBeNonNull("gl");
debug("");
debug("Checking gl.bindAttribLocation with long names.");
var program = gl.createProgram();
var suffix = "long";
for (var ii = 0; ii < 5; ++ii) {
suffix = suffix + suffix;
}
var replacements = {
suffix: suffix
};
var vsrc = wtu.replaceParams(wtu.getScript("vshader"), replacements);
var fsrc = wtu.replaceParams(wtu.getScript("fshader"), replacements);
var vs = wtu.loadShader(gl, vsrc, gl.VERTEX_SHADER);
var fs = wtu.loadShader(gl, fsrc, gl.FRAGMENT_SHADER);
var attribs = {
vPosition: "vPosition" + suffix,
vColor: "vColor" + suffix
};
gl.attachShader(program, vs);
gl.attachShader(program, fs);
var positions = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positions);
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,
-1.0, -1.0, 0.0,
1.0, -1.0, 0.0]),
gl.STATIC_DRAW);
var colors = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, colors);
gl.bufferData(
gl.ARRAY_BUFFER,
new Float32Array(
[ 0,1,0,1,
0,1,0,1,
0,1,0,1,
0,1,0,1,
0,1,0,1,
0,1,0,1]),
gl.STATIC_DRAW);
function setBindLocations(colorLocation, positionLocation) {
gl.bindAttribLocation(program, positionLocation, attribs.vPosition);
gl.bindAttribLocation(program, colorLocation, attribs.vColor);
gl.linkProgram(program);
gl.useProgram(program);
var linked = (gl.getProgramParameter(program, gl.LINK_STATUS) != 0);
assertMsg(linked, "program linked successfully");
debug("vPosition:" + gl.getAttribLocation(program, attribs.vPosition))
debug("vColor :" + gl.getAttribLocation(program, attribs.vColor))
assertMsg(gl.getAttribLocation(program, attribs.vPosition) == positionLocation,
"location of vPosition should be " + positionLocation);
assertMsg(gl.getAttribLocation(program, attribs.vColor) == colorLocation,
"location of vColor should be " + colorLocation);
var ploc = gl.getAttribLocation(program, attribs.vPosition);
var cloc = gl.getAttribLocation(program, attribs.vColor);
gl.bindBuffer(gl.ARRAY_BUFFER, positions);
gl.enableVertexAttribArray(positionLocation);
gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0);
gl.bindBuffer(gl.ARRAY_BUFFER, colors);
gl.enableVertexAttribArray(colorLocation);
gl.vertexAttribPointer(colorLocation, 4, gl.FLOAT, false, 0, 0);
}
function checkDraw(colorLocation, positionLocation, r, g, b, a) {
wtu.clearAndDrawUnitQuad(gl);
wtu.checkCanvas(gl, [r, g, b, a], "should be green");
gl.disableVertexAttribArray(positionLocation);
gl.disableVertexAttribArray(colorLocation);
}
setBindLocations(2, 3);
checkDraw(2, 3, 0, 255, 0, 255);
setBindLocations(0, 3);
gl.disableVertexAttribArray(0);
gl.vertexAttrib4f(0, 1, 0, 0, 1);
checkDraw(0, 3, 255, 0, 0, 255);
wtu.glErrorShouldBe(gl, gl.NO_ERROR);
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
