<head>
<meta charset="utf-8">
<title>WebGL Information</title>
-<script src="../../demos/common/webgl-utils.js"> </script>
+<style type="text/css">
+th, td {
+ padding: 4pt;
+}
+th {
+ text-align: right;
+ min-width: 22em;
+}
+</style>
<script src="../conformance/resources/webgl-test-utils.js"> </script>
<script>
"use strict";
window.onload = main;
-function createCell(txt) {
+function createCell(txt, isTh) {
var str = txt.toString();
if (typeof txt != 'string') {
if (txt.length !== undefined) {
}
var t = document.createTextNode(str);
var d = document.createElement("div");
- var td = document.createElement("td");
+ var td;
+ if (isTh) {
+ td = document.createElement("th");
+ } else {
+ td = document.createElement("td");
+ }
d.appendChild(t);
td.appendChild(d);
return td;
function createRow(values) {
var tr = document.createElement("tr");
for (var i = 0; i < values.length; ++i) {
- var td = createCell(values[i]);
+ var td = createCell(values[i], i == 0);
tr.appendChild(td);
}
return tr;
}
function main() {
- var canvas = document.getElementById("example");
- var gl = WebGLUtils.setupWebGL(canvas);
var wtu = WebGLTestUtils;
+
+ var canvas = document.getElementById("example");
+ var gl = wtu.create3DContext(canvas);
if (!gl) {
return;
}
- var pnames = [
- 'VERSION',
- 'VENDOR',
- 'RENDERER',
- 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
- 'MAX_CUBE_MAP_TEXTURE_SIZE',
- 'MAX_FRAGMENT_UNIFORM_VECTORS',
- 'MAX_RENDERBUFFER_SIZE',
- 'MAX_TEXTURE_IMAGE_UNITS',
- 'MAX_TEXTURE_SIZE',
- 'MAX_VARYING_VECTORS',
- 'MAX_VERTEX_ATTRIBS',
- 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
- 'MAX_VERTEX_UNIFORM_VECTORS',
- 'MAX_VIEWPORT_DIMS'
- ];
+ var debugRendererInfoRows = function() {
+ var rows = [];
+ var debugExt = wtu.getExtensionWithKnownPrefixes(gl, 'WEBGL_debug_renderer_info');
+ if (debugExt) {
+ var extPnames = [
+ 'UNMASKED_VENDOR_WEBGL',
+ 'UNMASKED_RENDERER_WEBGL'
+ ];
+ for (var ii = 0; ii < extPnames.length; ++ii) {
+ var pname = extPnames[ii];
+ var value = gl.getParameter(debugExt[pname]);
+ rows.push([pname, value]);
+ }
+ }
+ return rows;
+ };
- var table = document.createElement("table");
- var tb = document.createElement("tbody");
- for (var ii = 0; ii < pnames.length; ++ii) {
- var pname = pnames[ii];
- var value = gl.getParameter(gl[pname]);
- tb.appendChild(createRow([pname, value]));
- }
- var debugExt = gl.getExtension('WEBGL_debug_renderer_info');
- if (debugExt) {
- var extPnames = [
- 'UNMASKED_VENDOR_WEBGL',
- 'UNMASKED_RENDERER_WEBGL'
+ var precisionRows = function() {
+ var rows = [];
+
+ var addPrecisionRow = function(shaderType, precision) {
+ var typeStr = shaderType === gl.FRAGMENT_SHADER ? 'fragment' : 'vertex';
+ var precisionStr = 'highp';
+ if (precision == gl.MEDIUM_FLOAT) {
+ precisionStr = 'mediump';
+ } else if (precision == gl.LOW_FLOAT) {
+ precisionStr = 'lowp';
+ }
+ rows.push([typeStr + ' shader ' + precisionStr + ' float', gl.getShaderPrecisionFormat(shaderType, precision).precision + ' mantissa bits']);
+ };
+
+ var fSource = 'precision highp float; uniform float r; void main() { gl_FragColor = vec4(r, 0.0, 0.0, 1.0); }'
+ var f = wtu.loadShader(gl, fSource, gl.FRAGMENT_SHADER);
+ if (!f) {
+ rows.push(['fragment shader highp float', 'not supported']);
+ } else {
+ addPrecisionRow(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT);
+ }
+ addPrecisionRow(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT);
+ addPrecisionRow(gl.FRAGMENT_SHADER, gl.LOW_FLOAT);
+ addPrecisionRow(gl.VERTEX_SHADER, gl.HIGH_FLOAT);
+ addPrecisionRow(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT);
+ addPrecisionRow(gl.VERTEX_SHADER, gl.LOW_FLOAT);
+ return rows;
+ };
+
+ var renderTargetRows = function() {
+ var rows = [];
+ var oesTextureFloat = wtu.getExtensionWithKnownPrefixes(gl, 'OES_texture_float');
+ var oesTextureHalfFloat = wtu.getExtensionWithKnownPrefixes(gl, 'OES_texture_half_float');
+ var formatsToTest = [
+ {
+ description: 'RGBA UNSIGNED_BYTE',
+ format: gl.RGBA,
+ type: gl.UNSIGNED_BYTE
+ },
+ {
+ description: 'RGB UNSIGNED_BYTE',
+ format: gl.RGB,
+ type: gl.UNSIGNED_BYTE
+ }
];
- for (var ii = 0; ii < extPnames.length; ++ii) {
- var pname = extPnames[ii];
- var value = gl.getParameter(debugExt[pname]);
- tb.appendChild(createRow([pname, value]));
+ if (oesTextureFloat) {
+ formatsToTest.push({
+ description: 'RGBA FLOAT',
+ format: gl.RGBA,
+ type: gl.FLOAT
+ });
+ formatsToTest.push({
+ description: 'RGB FLOAT',
+ format: gl.RGB,
+ type: gl.FLOAT
+ });
+ }
+ if (oesTextureHalfFloat) {
+ formatsToTest.push({
+ description: 'RGBA HALF_FLOAT_OES',
+ format: gl.RGBA,
+ type: oesTextureHalfFloat.HALF_FLOAT_OES
+ });
+ formatsToTest.push({
+ description: 'RGB HALF_FLOAT_OES',
+ format: gl.RGB,
+ type: oesTextureHalfFloat.HALF_FLOAT_OES
+ });
+ }
+ for (var ii = 0; ii < formatsToTest.length; ++ii) {
+ var fb = gl.createFramebuffer();
+ gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+ var format = formatsToTest[ii];
+ var tex = gl.createTexture();
+ gl.bindTexture(gl.TEXTURE_2D, tex);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+ gl.texImage2D(gl.TEXTURE_2D, 0, format.format, 256, 256, 0, format.format, format.type, null);
+ gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
+ if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+ rows.push([format.description, 'supported']);
+ } else {
+ rows.push([format.description, 'not supported']);
+ }
+ gl.deleteFramebuffer(fb);
+ gl.deleteTexture(tex);
+ }
+ return rows;
+ };
+
+ var info = [
+ {
+ title: 'Renderer',
+ pnames: [
+ 'VERSION',
+ 'VENDOR',
+ 'RENDERER'
+ ],
+ genRows: debugRendererInfoRows
+ },
+ {
+ title: 'Textures and Viewport',
+ pnames: [
+ 'MAX_TEXTURE_SIZE',
+ 'MAX_CUBE_MAP_TEXTURE_SIZE',
+ 'MAX_RENDERBUFFER_SIZE',
+ 'MAX_VIEWPORT_DIMS'
+ ]
+ },
+ {
+ title: 'Shader Variables',
+ pnames: [
+ 'MAX_VARYING_VECTORS',
+ 'MAX_VERTEX_ATTRIBS',
+ 'MAX_VERTEX_UNIFORM_VECTORS',
+ 'MAX_FRAGMENT_UNIFORM_VECTORS',
+ 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
+ 'MAX_TEXTURE_IMAGE_UNITS',
+ 'MAX_COMBINED_TEXTURE_IMAGE_UNITS'
+ ]
+ },
+ {
+ title: 'Shader Precision',
+ genRows: precisionRows
+ },
+ {
+ title: 'Framebuffer Texture Attachment Support',
+ genRows: renderTargetRows
+ }
+ ];
+
+ // TODO: max anisotropy, framebuffer depth bits, MSAA samples, max multiple render targets buffers, point size, line width
+
+ for (var jj = 0; jj < info.length; ++jj) {
+ var table = document.createElement("table");
+ var tb = document.createElement("tbody");
+ if (info[jj].pnames) {
+ var pnames = info[jj].pnames;
+ for (var ii = 0; ii < pnames.length; ++ii) {
+ var pname = pnames[ii];
+ var value = gl.getParameter(gl[pname]);
+ tb.appendChild(createRow([pname, value]));
+ }
+ }
+ if (info[jj].genRows) {
+ var genRows = info[jj].genRows();
+ for (var ii = 0; ii < genRows.length; ++ii) {
+ tb.appendChild(createRow(genRows[ii]));
+ }
}
+ table.appendChild(tb);
+ var header = document.createElement("h2");
+ header.textContent = info[jj].title;
+ document.getElementById("info").appendChild(header);
+ document.getElementById("info").appendChild(table);
}
- table.appendChild(tb);
- document.getElementById("info").appendChild(table);
var extensionList = document.createElement('ul');
var exts = gl.getSupportedExtensions();
var extsWithPrefixes = [];
projects / platform / framework / web / crosswalk.git / blobdiff