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October 22, 2010 12:35
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簡單地檢測webgl支援以及瀏覽器對WebGL Interface的支援程度
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| <!DOCTYPE html> | |
| <html lang="zh-TW"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf8"> | |
| <style> | |
| div { | |
| background: #AACCEE; | |
| border: solid 1px #336699; | |
| margin: 10px; | |
| padding: 5px; | |
| border-radius: 5px; | |
| display: inline-block; | |
| vertical-align: top; | |
| } | |
| canvas { | |
| cursor: pointer; | |
| } | |
| </style> | |
| <script src="js/jquery-1.4.2.min.js"></script> | |
| <script> | |
| $(document).ready(function() { | |
| function mapper(a, f) { | |
| for(var i=0,r=null; i<a.length; i++) { | |
| try { | |
| r = f(a[i]); | |
| if(r) { | |
| alert(a[i]); | |
| return r; | |
| } | |
| } catch(e) {} | |
| } | |
| return null; | |
| } | |
| function getGL(canvas) { | |
| return mapper( | |
| ['webgl', 'experimental-webgl', 'moz-webgl', 'webkit-3d'], | |
| function(s) { | |
| return canvas.getContext(s); | |
| } | |
| ); | |
| } | |
| function row(cells) { | |
| return '<tr>' + cells.join('') + '</tr>\n'; | |
| } | |
| function cell(text, style, col) { | |
| return '<td' + (col? ' colspan="'+col+'"':'') + (style? ' style="'+style+'"':'') + '>' + text + '</td>'; | |
| } | |
| function DOMInspector(result, obj, attr) { | |
| var ret = { | |
| 'result':result, | |
| 'SupportedAttributes':[], | |
| 'UnsupportAttributes':[], | |
| 'SupportedMethods':[], | |
| 'UnsupportMethods':[] | |
| }; | |
| for(var i=0; i<attr.attr.length; i++) { | |
| if(obj[attr.attr[i]] !== undefined) { | |
| ret.SupportedAttributes.push(attr.attr[i]); | |
| } else { | |
| ret.UnsupportAttributes.push(attr.attr[i]); | |
| } | |
| } | |
| for(var i=0; i<attr.mthd.length; i++) { | |
| if(obj[attr.mthd[i]] !== undefined) { | |
| ret.SupportedMethods.push(attr.mthd[i]); | |
| } else { | |
| ret.UnsupportMethods.push(attr.mthd[i]); | |
| } | |
| } | |
| return ret; | |
| } | |
| function resultParser(test) { | |
| var str = '<table cellpadding="2" cellspacing="0" border="1">'; | |
| for(var i in test) { | |
| if(i == 'result') { | |
| str += row([cell(test[i],null,2)]); | |
| } else { | |
| str += row([cell(i),cell(test[i].length>0? test[i].join('<br>'):' ')]); | |
| } | |
| } | |
| str += '</table>'; | |
| return str; | |
| } | |
| function WebGLInspector(obj) { | |
| var map = { | |
| attr: [ | |
| 'canvas' | |
| ], | |
| mthd: [ | |
| 'getContextAttributes', | |
| 'isContextLost', | |
| 'getSupportedExtensions', | |
| 'getExtension', | |
| 'activeTexture', | |
| 'attachShader', | |
| 'bindAttribLocation', | |
| 'bindBuffer', | |
| 'bindFramebuffer', | |
| 'bindRenderbuffer', | |
| 'bindTexture', | |
| 'blendColor', | |
| 'blendEquation', | |
| 'blendEquationSeparate', | |
| 'blendFunc', | |
| 'blendFuncSeparate', | |
| 'bufferData', | |
| 'bufferSubData', | |
| 'checkFramebufferStatus', | |
| 'clear', | |
| 'clearColor', | |
| 'clearDepth', | |
| 'clearStencil', | |
| 'colorMask', | |
| 'compileShader', | |
| 'copyTexImage2D', | |
| 'copyTexSubImage2D', | |
| 'createBuffer', | |
| 'createFramebuffer', | |
| 'createProgram', | |
| 'createRenderbuffer', | |
| 'createShader', | |
| 'createTexture', | |
| 'cullFace', | |
| 'deleteBuffer', | |
| 'deleteFramebuffer', | |
| 'deleteProgram', | |
| 'deleteRenderbuffer', | |
| 'deleteShader', | |
| 'deleteTexture', | |
| 'depthFunc', | |
| 'depthMask', | |
| 'depthRange', | |
| 'detachShader', | |
| 'disable', | |
| 'disableVertexAttribArray', | |
| 'drawArrays', | |
| 'drawElements', | |
| 'enable', | |
| 'enableVertexAttribArray', | |
| 'finish', | |
| 'flush', | |
| 'framebufferRenderbuffer', | |
| 'framebufferTexture2D', | |
| 'frontFace', | |
| 'generateMipmap', | |
| 'getActiveAttrib', | |
| 'getActiveUniform', | |
| 'getAttachedShaders', | |
| 'getAttribLocation', | |
| 'getParameter', | |
| 'getBufferParameter', | |
| 'getError', | |
| 'getFramebufferAttachmentParameter', | |
| 'getProgramParameter', | |
| 'getProgramInfoLog', | |
| 'getRenderbufferParameter', | |
| 'getShaderParameter', | |
| 'getShaderInfoLog', | |
| 'getShaderSource', | |
| 'getTexParameter', | |
| 'getUniform', | |
| 'getUniformLocation', | |
| 'getVertexAttrib', | |
| 'getVertexAttribOffset', | |
| 'hint', | |
| 'isBuffer', | |
| 'isEnabled', | |
| 'isFramebuffer', | |
| 'isProgram', | |
| 'isRenderbuffer', | |
| 'isShader', | |
| 'isTexture', | |
| 'lineWidth', | |
| 'linkProgram', | |
| 'pixelStorei', | |
| 'polygonOffset', | |
| 'readPixels', | |
| 'renderbufferStorage', | |
| 'sampleCoverage', | |
| 'scissor', | |
| 'shaderSource', | |
| 'stencilFunc', | |
| 'stencilFuncSeparate', | |
| 'stencilMask', | |
| 'stencilMaskSeparate', | |
| 'stencilOp', | |
| 'stencilOpSeparate', | |
| 'texImage2D', | |
| 'texParameterf', | |
| 'texParameteri', | |
| 'texSubImage2D', | |
| 'uniform1f', | |
| 'uniform1fv', | |
| 'uniform1i', | |
| 'uniform1iv', | |
| 'uniform2f', | |
| 'uniform2fv', | |
| 'uniform2i', | |
| 'uniform2iv', | |
| 'uniform3f', | |
| 'uniform3fv', | |
| 'uniform3i', | |
| 'uniform3iv', | |
| 'uniform4f', | |
| 'uniform4fv', | |
| 'uniform4i', | |
| 'uniform4iv', | |
| 'uniformMatrix2fv', | |
| 'uniformMatrix3fv', | |
| 'uniformMatrix4fv', | |
| 'useProgram', | |
| 'validateProgram', | |
| 'vertexAttrib1f', | |
| 'vertexAttrib1fv', | |
| 'vertexAttrib2f', | |
| 'vertexAttrib2fv', | |
| 'vertexAttrib3f', | |
| 'vertexAttrib3fv', | |
| 'vertexAttrib4f', | |
| 'vertexAttrib4fv', | |
| 'vertexAttribPointer', | |
| 'viewport' | |
| ] | |
| }; | |
| return DOMInspector('WebGL context Interface support.', obj, map); | |
| } | |
| var gl = getGL($('#canvas')[0]); | |
| if(gl) { | |
| $('#panel').html(resultParser(WebGLInspector(gl))); | |
| } else { | |
| alert('webgl not supported!'); | |
| } | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="container"><canvas id="canvas" width="10" height="10"></canvas></div> | |
| <div id="panel"></div> | |
| </body> | |
| </html> |
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