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Unified Diff: third_party/webgl/sdk/tests/conformance/textures/texture-mips.html

Issue 9373009: Check in webgl conformance tests r16844 from khronos. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/
Patch Set: Created 8 years, 10 months ago
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Index: third_party/webgl/sdk/tests/conformance/textures/texture-mips.html
===================================================================
--- third_party/webgl/sdk/tests/conformance/textures/texture-mips.html (revision 0)
+++ third_party/webgl/sdk/tests/conformance/textures/texture-mips.html (revision 0)
@@ -0,0 +1,259 @@
+<!--
+Copyright (c) 2011 The Chromium Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+ -->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL texture mips conformance test.</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../resources/js-test-pre.js"></script>
+<script src="../resources/webgl-test.js"> </script>
+<script src="../resources/webgl-test-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="2" height="2" style="width: 40px; height: 40px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+uniform vec4 uMult;
+attribute vec4 vPosition;
+attribute vec2 texCoord0;
+varying vec2 texCoord;
+void main()
+{
+ gl_Position = vPosition * uMult;
+ texCoord = texCoord0;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+uniform sampler2D tex;
+varying vec2 texCoord;
+void main()
+{
+ gl_FragColor = texture2D(tex, texCoord);
+}
+</script>
+<script>
+var canvas;
+var wtu = WebGLTestUtils;
+function init()
+{
+ if (window.initNonKhronosFramework) {
+ window.initNonKhronosFramework(false);
+ }
+
+ description("Checks mip issues");
+
+ canvas = document.getElementById("example");
+ shouldBe("canvas.width", "2");
+ shouldBe("canvas.height", "2");
+
+ gl = wtu.create3DContext(canvas);
+ wtu.setupUnitQuad(gl, 0, 1);
+ var program = wtu.setupProgram(
+ gl,
+ [wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER),
+ wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER)],
+ ['vPosition', 'texCoord0'], [0, 1]);
+
+ gl.disable(gl.DEPTH_TEST);
+ gl.disable(gl.BLEND);
+
+ var colors = {
+ blue: [0, 0, 255, 255],
+ red: [255, 0, 0, 255],
+ green: [0, 255, 0, 255],
+ cyan: [128, 255, 255, 255],
+ black: [0, 0, 0, 255]
+ };
+
+ var mips = [
+ ];
+
+ var texLoc = gl.getUniformLocation(program, "tex");
+ gl.uniform1i(texLoc, 0);
+ var multLoc = gl.getUniformLocation(program, "uMult");
+
+ // ----------------------------------------------------
+ var tex = createTexture();
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+
+ gl.bindTexture(gl.TEXTURE_2D, tex);
+ // 16x16 texture no mips
+ fillLevel(tex, 0, 16, 'cyan');
+
+ check('black',
+ "texture that is missing mips when TEXTURE_MIN_FILTER not NEAREST or LINEAR");
+
+ generateMipmap();
+
+ check('cyan', "texture that has all mips");
+
+ // Fill in the bottom 2 mips with a different color.
+ fillLevel(tex, 4, 1, 'green');
+ fillLevel(tex, 3, 2, 'green');
+
+ // Choose the nearest mip
+ texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+
+ check('green', "texture that is only using the smallest 2 mips");
+
+ gl.uniform4f(multLoc, 16, 16, 1, 1);
+
+ check('cyan', "texture that is using only the largest 2 mips");
+
+ // Set the top level
+ fillLevel(tex, 0, 1, 'red');
+ check('red',
+ "texture that is only using the top level even though other levels are defined");
+
+ // Set the top 2 levels using generateMipmap
+ fillLevel(tex, 0, 2, 'blue');
+ generateMipmap();
+
+ check('blue',
+ "texture that is only using the top 2 levels even though other levels are defined");
+
+ // Set the top 2 levels back to sizes that end up using levels 2, 3, and 4 again.
+ fillLevel(tex, 0, 16, 'blue');
+ fillLevel(tex, 1, 8, 'blue');
+ check('blue', "texture that is only using the largest 2 mips");
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+ check('green', "texture that is only using the smallest 2 mips");
+
+ // ----------------------------------------------------
+ var tex = createTexture();
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+ fillLevel(tex, 0, 8, 'cyan');
+ generateMipmap();
+ check('cyan', "texture that has 3 mips");
+
+ fillLevel(tex, 0, 16, 'blue');
+ texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+ check('blue', "texture that is only using top mips");
+
+ fillLevel(tex, 0, 8, 'red');
+ texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+ check('cyan', "texture that is only using smallest mips");
+
+ gl.uniform4f(multLoc, 16, 16, 1, 1);
+ check('red', "texture that is using only the largest mip");
+
+ // ----------------------------------------------------
+ var tex = createTexture();
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+ fillLevel(tex, 2, 1, 'green');
+ fillLevel(tex, 1, 2, 'green');
+ fillLevel(tex, 0, 4, 'green');
+ check('green', "texture that was built smallest mip first");
+
+ // ----------------------------------------------------
+ var tex = createTexture();
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+ fillLevel(tex, 0, 16, 'red');
+ generateMipmap();
+ check('red', "texture with 1 genmipmaps");
+ fillLevel(tex, 0, 16, 'blue');
+ generateMipmap();
+ fillLevel(tex, 0, 16, 'green');
+ generateMipmap();
+ check('green', "texture with 2 genmipmaps");
+
+ // ----------------------------------------------------
+ glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
+
+ function createTexture() {
+ debug("<hr/>gl.createTexture()");
+ mips = [];
+ makeDivMipChain();
+ return gl.createTexture();
+ }
+
+ function texParameteri(target, pname, value) {
+ debug("gl.texParameteri(" +
+ wtu.glEnumToString(gl, target) + ", " +
+ wtu.glEnumToString(gl, pname) + ", " +
+ wtu.glEnumToString(gl, value) + ")")
+ gl.texParameteri(target, pname, value);
+ }
+
+ function generateMipmap() {
+ debug("gl.genreateMipmap(gl.TEXTURE_2D)");
+ gl.generateMipmap(gl.TEXTURE_2D);
+ var mip0 = mips[0];
+ var size = mip0.size;
+ var level = 1;
+ for(;;) {
+ size = Math.floor(size / 2);
+ if (!size) {
+ break;
+ }
+ setMipData(level, size, mip0.color);
+ ++level;
+ }
+ makeDivMipChain();
+ }
+
+ function check(color, msg) {
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, colors[color], msg + " should draw with " + color);
+ }
+
+ function fillLevel(tex, level, size, color) {
+ setMipData(level, size, color);
+ debug("gl.texImage2D(gl.TEXTURE_2D, " + level + ", gl.RGBA, " + size + ", " + size +
+ ", 0, gl.RGBA, gl.UNSIGNED_BYTE, " + color + ");");
+ wtu.fillTexture(gl, tex, size, size, colors[color], level);
+ makeDivMipChain();
+ }
+
+ function setMipData(level, size, color) {
+ mips[level] = {
+ size: size,
+ color: color
+ };
+ }
+
+ function makeDivMipChain(color) {
+ var html = [
+ '<div style="height: 68px; margin-top: 5px">',
+ '<div style="float:left;">mips: </div>'];
+ for (var ii = 0; ii < 5; ++ii) {
+ var mip = mips[ii];
+ if (mip) {
+ html.push(makeDivSquare(mip.size, mip.color));
+ } else {
+ html.push(makeDivSquare(16, undefined));
+ }
+ }
+ html.push("</div>");
+ debug(html.join(""));
+ }
+
+ function makeDivSquare(size, color) {
+ size *= 4;
+ var c = color ? colors[color] : [255,255,255];
+ var border = color ? 'solid' : 'dashed';
+ return '<div style="float:left; width: ' + size + 'px; height: ' + size +
+ 'px; background-color: ' + rgb(c) +
+ '; border: 1px ' + border + ' black; margin-right: 3px;"></div>';
+ }
+
+ function rgb(c) {
+ return 'rgb(' + c[0] + ',' + c[1] + ',' + c[2] +')';
+ }
+}
+
+init();
+successfullyParsed = true;
+</script>
+
+<script src="../../resources/js-test-post.js"></script>
+</body>
+</html>
+
Property changes on: third_party/webgl/sdk/tests/conformance/textures/texture-mips.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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