LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/programs/gl-bind-attrib-location-test.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2012 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
 ** "Materials"), to deal in the Materials without restriction, including
 ** without limitation the rights to use, copy, modify, merge, publish,
 ** distribute, sublicense, and/or sell copies of the Materials, and to
 ** permit persons to whom the Materials are furnished to do so, subject to
 ** the following conditions:
 **
 ** The above copyright notice and this permission notice shall be included
 ** in all copies or substantial portions of the Materials.
 **
 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

 -->

 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <title>WebGL BindAttribLocation Conformance Tests</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/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;
 attribute vec4 vColor;
 varying vec4 color;
 void main()
 {
   gl_Position = vPosition;
   color = vColor;
 }
 </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 ensures WebGL implementations don't allow names that start with 'gl_' when calling bindAttribLocation.");

 debug("");
 debug("Canvas.getContext");

 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext("canvas");
 shouldBeNonNull("gl");

 debug("");
 debug("Checking gl.bindAttribLocation.");

 var program = gl.createProgram();
 gl.bindAttribLocation(program, 0, "gl_foo");
 wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
     "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");
 gl.bindAttribLocation(program, 0, "gl_TexCoord0");
 wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
     "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");

 var vs = wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER);
 var fs = wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER);
 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([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), 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]), gl.STATIC_DRAW);

 function setBindLocations(colorLocation, positionLocation) {
   gl.bindAttribLocation(program, positionLocation, "vPosition");
   gl.bindAttribLocation(program, colorLocation, "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, "vPosition"))
   debug("vColor   :" + gl.getAttribLocation(program, "vColor"))
   assertMsg(gl.getAttribLocation(program, "vPosition") == positionLocation,
             "location of vPosition should be " + positionLocation);
   assertMsg(gl.getAttribLocation(program, "vColor") == colorLocation,
             "location of vColor should be " + colorLocation);

   var ploc = gl.getAttribLocation(program, "vPosition");
   var cloc = gl.getAttribLocation(program, "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) {
   gl.clearColor(0, 0, 0, 1);
   gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
   gl.drawArrays(gl.TRIANGLES, 0, 3);

   var width = 50;
   var height = 50;

   // Test several locations
   wtu.checkCanvasRect(gl, 0, 0, width, 1, [0, 0, 0, 255],
       "First line should be all black");
   wtu.checkCanvasRect(gl, 20, 15, 10, 1, [r, g, b, a],
       "Line 15 should be red for at least 10 rgba pixels starting 20 pixels in");
   wtu.checkCanvasRect(gl, 0, height - 1, width, 0, [0, 0, 0, 255],
       "Last line should be all black");

   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="../../resources/js-test-post.js"></script>

 </body>
 </html>
	<!--

	/*
	** Copyright (c) 2012 The Khronos Group Inc.
	**
	** Permission is hereby granted, free of charge, to any person obtaining a
	** copy of this software and/or associated documentation files (the
	** "Materials"), to deal in the Materials without restriction, including
	** without limitation the rights to use, copy, modify, merge, publish,
	** distribute, sublicense, and/or sell copies of the Materials, and to
	** permit persons to whom the Materials are furnished to do so, subject to
	** the following conditions:
	**
	** The above copyright notice and this permission notice shall be included
	** in all copies or substantial portions of the Materials.
	**
	** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
	*/

	-->

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>WebGL BindAttribLocation Conformance Tests</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/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;
	attribute vec4 vColor;
	varying vec4 color;
	void main()
	{
	gl_Position = vPosition;
	color = vColor;
	}
	</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 ensures WebGL implementations don't allow names that start with 'gl_' when calling bindAttribLocation.");

	debug("");
	debug("Canvas.getContext");

	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext("canvas");
	shouldBeNonNull("gl");

	debug("");
	debug("Checking gl.bindAttribLocation.");

	var program = gl.createProgram();
	gl.bindAttribLocation(program, 0, "gl_foo");
	wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
	"bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");
	gl.bindAttribLocation(program, 0, "gl_TexCoord0");
	wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
	"bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");

	var vs = wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER);
	var fs = wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER);
	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([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), 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]), gl.STATIC_DRAW);

	function setBindLocations(colorLocation, positionLocation) {
	gl.bindAttribLocation(program, positionLocation, "vPosition");
	gl.bindAttribLocation(program, colorLocation, "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, "vPosition"))
	debug("vColor :" + gl.getAttribLocation(program, "vColor"))
	assertMsg(gl.getAttribLocation(program, "vPosition") == positionLocation,
	"location of vPosition should be " + positionLocation);
	assertMsg(gl.getAttribLocation(program, "vColor") == colorLocation,
	"location of vColor should be " + colorLocation);

	var ploc = gl.getAttribLocation(program, "vPosition");
	var cloc = gl.getAttribLocation(program, "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) {
	gl.clearColor(0, 0, 0, 1);
	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);
	gl.drawArrays(gl.TRIANGLES, 0, 3);

	var width = 50;
	var height = 50;

	// Test several locations
	wtu.checkCanvasRect(gl, 0, 0, width, 1, [0, 0, 0, 255],
	"First line should be all black");
	wtu.checkCanvasRect(gl, 20, 15, 10, 1, [r, g, b, a],
	"Line 15 should be red for at least 10 rgba pixels starting 20 pixels in");
	wtu.checkCanvasRect(gl, 0, height - 1, width, 0, [0, 0, 0, 255],
	"Last line should be all black");

	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="../../resources/js-test-post.js"></script>

	</body>
	</html>