LayoutTests/webgl/resources/webgl_test_files/conformance/glsl/samplers/glsl-function-texture2dprojlod.html - WebKit - Git at Google

 <!--
 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 texture2D GLSL conformance test.</title>
 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
 <link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/>
 <script src="../../../js/js-test-pre.js"></script>
 <script src="../../../js/webgl-test-utils.js"> </script>
 </head>
 <body>
 <canvas id="example" width="256" height="256" style="width: 16px; height: 16px;"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script id="vshader2dvec3" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 varying vec4 color;
 uniform sampler2D tex;
 uniform float divisor;
 uniform float lod;
 void main() {
     gl_Position = vPosition;
     color = texture2DProjLod(tex, vec3(0.75 * divisor, 0.25 * divisor, divisor), lod);
 }
 </script>
 <script id="vshader2dvec4" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 varying vec4 color;
 uniform sampler2D tex;
 uniform float divisor;
 uniform float lod;
 void main() {
     gl_Position = vPosition;
     color = texture2DProjLod(tex, vec4(0.75 * divisor, 0.25 * divisor, 123.0, divisor), lod);
 }
 </script>
 <script id="fshader2d" type="x-shader/x-fragment">
 precision mediump float;
 varying vec4 color;
 void main() {
     gl_FragData[0] = color;
 }
 </script>
 <script>
 "use strict";
 description("tests GLSL texture2DProjLod function");

 var wtu = WebGLTestUtils;
 var canvas = document.getElementById("example");

 shouldBe("canvas.width", "256");
 shouldBe("canvas.height", "256");

 var colors = [
   {name: 'red', color:[255, 0, 0, 255]},
   {name: 'green', color:[0, 255, 0, 255]},
   {name: 'blue', color:[0, 0, 255, 255]},
   {name: 'yellow', color:[255, 255, 0, 255]},
   {name: 'magenta', color:[255, 0, 255, 255]},
   {name: 'cyan', color:[0, 255, 255, 255]},
   {name: 'pink', color:[255, 128, 128, 255]},
   {name: 'gray', color:[128, 128, 128, 255]},
   {name: 'light green', color:[128, 255, 128, 255]},
 ];
 var contextTypes = ["2d", "webgl"];
 var vectorTypes = ["vec3", "vec4"];

 var gl = wtu.create3DContext(canvas);
 if (gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS) > 0) {
   runTest();
 } else {
   testPassed("MAX_VERTEX_TEXTURE_IMAGE_UNITS == 0, this is okay.");
 }


 function runTest() {
   // Avoid creating a WebGL context for every test, as it causes:
   // Too many active WebGL contexts. Oldest context will be lost.
   var canvasWebGL = document.createElement("canvas");
   var ctxWebGL = canvasWebGL.getContext("webgl");

   // Might as well do the same for canvas 2d
   var canvas2d = document.createElement("canvas");
   var ctx2d = canvas2d.getContext("2d");

   shouldBe("colors.length", "9");
   contextTypes.forEach((context) => {
     vectorTypes.forEach((vectorType) => {
       debug("");
       debug(`testing ${context} context with ${vectorType} vertex shader`);
       var program = wtu.setupProgram(
           gl, ['vshader2d' + vectorType, 'fshader2d'], ['vPosition', 'texCoord0'], [0, 1]);
       wtu.setupUnitQuad(gl, 0, 1);

       var tex = gl.createTexture();
       gl.bindTexture(gl.TEXTURE_2D, tex);
       gl.texParameteri(
           gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

       // Fill the top right quadrant of each texture level with one of the colors
       for (var ii = 0; ii < colors.length; ++ii) {
         var color = colors[ii];
         var size = Math.pow(2, colors.length - ii - 1);

         if (context === "2d") {
           canvas2d.width = size;
           canvas2d.height = size;
           ctx2d.fillStyle = "rgb(0,0,0)";
           ctx2d.fillRect(0, 0, size, size);
           ctx2d.fillStyle = "rgb(" + color.color[0] + "," + color.color[1] + "," + color.color[2] + ")";
           ctx2d.fillRect(size / 2, 0, size / 2, size / 2);
           gl.texImage2D(gl.TEXTURE_2D, ii, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas2d);
         } else if (context === "webgl") {
           canvasWebGL.width = canvasWebGL.height = size;
           ctxWebGL.clearColor(0, 0, 0, 1);
           ctxWebGL.clear(gl.COLOR_BUFFER_BIT);
           ctxWebGL.enable(gl.SCISSOR_TEST);
           ctxWebGL.scissor(size/2, size/2, size/2, size/2)
           ctxWebGL.clearColor(color.color[0]/255, color.color[1]/255, color.color[2]/255, 1)
           ctxWebGL.clear(gl.COLOR_BUFFER_BIT);
           gl.texImage2D(gl.TEXTURE_2D, ii, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvasWebGL);
         }
       }

       var lodLoc = gl.getUniformLocation(program, "lod");
       var divLoc = gl.getUniformLocation(program, "divisor");

       for (var div = 1; div < 4; ++div) {
         for (var ii = 0; ii < colors.length - 1; ++ii) {
           gl.uniform1f(lodLoc, ii);
           gl.uniform1f(divLoc, div);
           var lodColor = colors[ii];
           var size = Math.pow(2, colors.length - ii - 1);
           wtu.clearAndDrawUnitQuad(gl);
           wtu.checkCanvas(
               gl, lodColor.color,
               "sampling with lod = " + ii +
               " divider = " + div +
               " should be " + lodColor.name);
         }
       }
     });
   });
   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
 }

 var successfullyParsed = true;

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

 </body>
 </html>
	<!--
	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 texture2D GLSL conformance test.</title>
	<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
	<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/>
	<script src="../../../js/js-test-pre.js"></script>
	<script src="../../../js/webgl-test-utils.js"> </script>
	</head>
	<body>
	<canvas id="example" width="256" height="256" style="width: 16px; height: 16px;"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script id="vshader2dvec3" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	varying vec4 color;
	uniform sampler2D tex;
	uniform float divisor;
	uniform float lod;
	void main() {
	gl_Position = vPosition;
	color = texture2DProjLod(tex, vec3(0.75 * divisor, 0.25 * divisor, divisor), lod);
	}
	</script>
	<script id="vshader2dvec4" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	varying vec4 color;
	uniform sampler2D tex;
	uniform float divisor;
	uniform float lod;
	void main() {
	gl_Position = vPosition;
	color = texture2DProjLod(tex, vec4(0.75 * divisor, 0.25 * divisor, 123.0, divisor), lod);
	}
	</script>
	<script id="fshader2d" type="x-shader/x-fragment">
	precision mediump float;
	varying vec4 color;
	void main() {
	gl_FragData[0] = color;
	}
	</script>
	<script>
	"use strict";
	description("tests GLSL texture2DProjLod function");

	var wtu = WebGLTestUtils;
	var canvas = document.getElementById("example");

	shouldBe("canvas.width", "256");
	shouldBe("canvas.height", "256");

	var colors = [
	{name: 'red', color:[255, 0, 0, 255]},
	{name: 'green', color:[0, 255, 0, 255]},
	{name: 'blue', color:[0, 0, 255, 255]},
	{name: 'yellow', color:[255, 255, 0, 255]},
	{name: 'magenta', color:[255, 0, 255, 255]},
	{name: 'cyan', color:[0, 255, 255, 255]},
	{name: 'pink', color:[255, 128, 128, 255]},
	{name: 'gray', color:[128, 128, 128, 255]},
	{name: 'light green', color:[128, 255, 128, 255]},
	];
	var contextTypes = ["2d", "webgl"];
	var vectorTypes = ["vec3", "vec4"];

	var gl = wtu.create3DContext(canvas);
	if (gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS) > 0) {
	runTest();
	} else {
	testPassed("MAX_VERTEX_TEXTURE_IMAGE_UNITS == 0, this is okay.");
	}


	function runTest() {
	// Avoid creating a WebGL context for every test, as it causes:
	// Too many active WebGL contexts. Oldest context will be lost.
	var canvasWebGL = document.createElement("canvas");
	var ctxWebGL = canvasWebGL.getContext("webgl");

	// Might as well do the same for canvas 2d
	var canvas2d = document.createElement("canvas");
	var ctx2d = canvas2d.getContext("2d");

	shouldBe("colors.length", "9");
	contextTypes.forEach((context) => {
	vectorTypes.forEach((vectorType) => {
	debug("");
	debug(`testing ${context} context with ${vectorType} vertex shader`);
	var program = wtu.setupProgram(
	gl, ['vshader2d' + vectorType, 'fshader2d'], ['vPosition', 'texCoord0'], [0, 1]);
	wtu.setupUnitQuad(gl, 0, 1);

	var tex = gl.createTexture();
	gl.bindTexture(gl.TEXTURE_2D, tex);
	gl.texParameteri(
	gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

	// Fill the top right quadrant of each texture level with one of the colors
	for (var ii = 0; ii < colors.length; ++ii) {
	var color = colors[ii];
	var size = Math.pow(2, colors.length - ii - 1);

	if (context === "2d") {
	canvas2d.width = size;
	canvas2d.height = size;
	ctx2d.fillStyle = "rgb(0,0,0)";
	ctx2d.fillRect(0, 0, size, size);
	ctx2d.fillStyle = "rgb(" + color.color[0] + "," + color.color[1] + "," + color.color[2] + ")";
	ctx2d.fillRect(size / 2, 0, size / 2, size / 2);
	gl.texImage2D(gl.TEXTURE_2D, ii, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas2d);
	} else if (context === "webgl") {
	canvasWebGL.width = canvasWebGL.height = size;
	ctxWebGL.clearColor(0, 0, 0, 1);
	ctxWebGL.clear(gl.COLOR_BUFFER_BIT);
	ctxWebGL.enable(gl.SCISSOR_TEST);
	ctxWebGL.scissor(size/2, size/2, size/2, size/2)
	ctxWebGL.clearColor(color.color[0]/255, color.color[1]/255, color.color[2]/255, 1)
	ctxWebGL.clear(gl.COLOR_BUFFER_BIT);
	gl.texImage2D(gl.TEXTURE_2D, ii, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvasWebGL);
	}
	}

	var lodLoc = gl.getUniformLocation(program, "lod");
	var divLoc = gl.getUniformLocation(program, "divisor");

	for (var div = 1; div < 4; ++div) {
	for (var ii = 0; ii < colors.length - 1; ++ii) {
	gl.uniform1f(lodLoc, ii);
	gl.uniform1f(divLoc, div);
	var lodColor = colors[ii];
	var size = Math.pow(2, colors.length - ii - 1);
	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, lodColor.color,
	"sampling with lod = " + ii +
	" divider = " + div +
	" should be " + lodColor.name);
	}
	}
	});
	});
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
	}

	var successfullyParsed = true;

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

	</body>
	</html>