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| 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
| 2 "http://www.w3.org/TR/html4/loose.dtd"> | |
| 3 <html> | |
| 4 <head> | |
| 5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 6 <title>WebGL BindAttribLocation Conformance Tests</title> | |
| 7 <script src="../../../resources/js-test.js"></script> | |
| 8 <script src="resources/webgl-test.js"></script> | |
| 9 </head> | |
| 10 <body> | |
| 11 <div id="description"></div> | |
| 12 <div id="console"></div> | |
| 13 <canvas style="border: 1px solid black;" id="canvas" width="50" height="50"></ca
nvas> | |
| 14 <script id="vshader" type="text/something-not-javascript"> | |
| 15 attribute vec4 vPosition; | |
| 16 attribute vec4 vColor; | |
| 17 varying vec4 color; | |
| 18 void main() | |
| 19 { | |
| 20 gl_Position = vPosition; | |
| 21 color = vColor; | |
| 22 } | |
| 23 </script> | |
| 24 <script id="fshader" type="text/something-not-javascript"> | |
| 25 #ifdef GL_ES | |
| 26 precision highp float; | |
| 27 #endif | |
| 28 varying vec4 color; | |
| 29 void main() | |
| 30 { | |
| 31 gl_FragColor = color; | |
| 32 } | |
| 33 </script> | |
| 34 <script> | |
| 35 description("This test ensures WebGL implementations don't allow names that star
t with 'gl_' when calling bindAttribLocation."); | |
| 36 | |
| 37 if (window.internals) | |
| 38 window.internals.settings.setWebGLErrorsToConsoleEnabled(false); | |
| 39 | |
| 40 debug(""); | |
| 41 debug("Canvas.getContext"); | |
| 42 | |
| 43 var gl = create3DContext(document.getElementById("canvas")); | |
| 44 shouldBeNonNull(gl); | |
| 45 | |
| 46 function fail(x,y, buf, shouldBe) | |
| 47 { | |
| 48 var i = (y*50+x) * 4; | |
| 49 var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+",
"+buf[i+3]+"), should be "+shouldBe; | |
| 50 testFailed(reason); | |
| 51 } | |
| 52 | |
| 53 function pass() | |
| 54 { | |
| 55 testPassed("drawing is correct"); | |
| 56 } | |
| 57 | |
| 58 function loadShader(shaderType, shaderId) { | |
| 59 // Get the shader source. | |
| 60 var shaderSource = document.getElementById(shaderId).text; | |
| 61 | |
| 62 // Create the shader object | |
| 63 var shader = gl.createShader(shaderType); | |
| 64 if (shader == null) { | |
| 65 debug("*** Error: unable to create shader '"+shaderId+"'"); | |
| 66 return null; | |
| 67 } | |
| 68 | |
| 69 // Load the shader source | |
| 70 gl.shaderSource(shader, shaderSource); | |
| 71 | |
| 72 // Compile the shader | |
| 73 gl.compileShader(shader); | |
| 74 | |
| 75 // Check the compile status | |
| 76 var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS); | |
| 77 if (!compiled) { | |
| 78 // Something went wrong during compilation; get the error | |
| 79 var error = gl.getShaderInfoLog(shader); | |
| 80 debug("*** Error compiling shader '"+shader+"':"+error); | |
| 81 gl.deleteShader(shader); | |
| 82 return null; | |
| 83 } | |
| 84 return shader; | |
| 85 } | |
| 86 | |
| 87 debug(""); | |
| 88 debug("Checking gl.bindAttribLocation."); | |
| 89 | |
| 90 var program = gl.createProgram(); | |
| 91 gl.bindAttribLocation(program, 0, "gl_foo"); | |
| 92 glErrorShouldBe(gl, gl.INVALID_OPERATION, | |
| 93 "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_
'"); | |
| 94 gl.bindAttribLocation(program, 0, "gl_TexCoord0"); | |
| 95 glErrorShouldBe(gl, gl.INVALID_OPERATION, | |
| 96 "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_
'"); | |
| 97 | |
| 98 var vs = loadShader(gl.VERTEX_SHADER, "vshader"); | |
| 99 var fs = loadShader(gl.FRAGMENT_SHADER, "fshader"); | |
| 100 gl.attachShader(program, vs); | |
| 101 gl.attachShader(program, fs); | |
| 102 | |
| 103 var positions = gl.createBuffer(); | |
| 104 gl.bindBuffer(gl.ARRAY_BUFFER, positions); | |
| 105 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5
,0 ]), gl.STATIC_DRAW); | |
| 106 | |
| 107 var colors = gl.createBuffer(); | |
| 108 gl.bindBuffer(gl.ARRAY_BUFFER, colors); | |
| 109 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
| 110 0,1,0,1, | |
| 111 0,1,0,1, | |
| 112 0,1,0,1]), gl.STATIC_DRAW); | |
| 113 | |
| 114 function setBindLocations(colorLocation, positionLocation) { | |
| 115 gl.bindAttribLocation(program, positionLocation, "vPosition"); | |
| 116 gl.bindAttribLocation(program, colorLocation, "vColor"); | |
| 117 gl.linkProgram(program); | |
| 118 gl.useProgram(program); | |
| 119 var linked = (gl.getProgramParameter(program, gl.LINK_STATUS) != 0); | |
| 120 assertMsg(linked, "program linked successfully"); | |
| 121 | |
| 122 debug("vPosition:" + gl.getAttribLocation(program, "vPosition")) | |
| 123 debug("vColor :" + gl.getAttribLocation(program, "vColor")) | |
| 124 assertMsg(gl.getAttribLocation(program, "vPosition") == positionLocation, | |
| 125 "location of vPositon should be " + positionLocation); | |
| 126 assertMsg(gl.getAttribLocation(program, "vColor") == colorLocation, | |
| 127 "location of vColor should be " + colorLocation); | |
| 128 | |
| 129 var ploc = gl.getAttribLocation(program, "vPosition"); | |
| 130 var cloc = gl.getAttribLocation(program, "vColor"); | |
| 131 gl.bindBuffer(gl.ARRAY_BUFFER, positions); | |
| 132 gl.enableVertexAttribArray(positionLocation); | |
| 133 gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0); | |
| 134 gl.bindBuffer(gl.ARRAY_BUFFER, colors); | |
| 135 gl.enableVertexAttribArray(colorLocation); | |
| 136 gl.vertexAttribPointer(colorLocation, 4, gl.FLOAT, false, 0, 0); | |
| 137 } | |
| 138 | |
| 139 function checkDraw(colorLocation, positionLocation, r, g, b, a) { | |
| 140 gl.clearColor(0, 0, 0, 1); | |
| 141 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 142 gl.drawArrays(gl.TRIANGLES, 0, 3); | |
| 143 | |
| 144 var width = 50; | |
| 145 var height = 50; | |
| 146 var buf = new Uint8Array(width * height * 4); | |
| 147 gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buf); | |
| 148 | |
| 149 function checkPixel(x, y, r, g, b, a) { | |
| 150 var offset = (y * width + x) * 4; | |
| 151 if (buf[offset + 0] != r || | |
| 152 buf[offset + 1] != g || | |
| 153 buf[offset + 2] != b || | |
| 154 buf[offset + 3] != a) { | |
| 155 fail(x, y, buf, "(" + r + "," + g + "," + b + "," + a + ")"); | |
| 156 return false; | |
| 157 } | |
| 158 return true; | |
| 159 } | |
| 160 | |
| 161 // Test several locations | |
| 162 // First line should be all black | |
| 163 var success = true; | |
| 164 for (var i = 0; i < 50; ++i) | |
| 165 success = success && checkPixel(i, 0, 0, 0, 0, 255); | |
| 166 | |
| 167 // Line 15 should be red for at least 10 rgba pixels starting 20 pixels in | |
| 168 var offset = (15 * 50 + 20) * 4; | |
| 169 for (var i = 0; i < 10; ++i) | |
| 170 success = success && checkPixel(20 + i, 15, r, g, b, a); | |
| 171 | |
| 172 // Last line should be all black | |
| 173 for (var i = 0; i < 50; ++i) | |
| 174 success = success && checkPixel(i, 49, 0, 0, 0, 255); | |
| 175 | |
| 176 if (success) | |
| 177 pass(); | |
| 178 | |
| 179 gl.disableVertexAttribArray(positionLocation); | |
| 180 gl.disableVertexAttribArray(colorLocation); | |
| 181 } | |
| 182 | |
| 183 setBindLocations(2, 3); | |
| 184 checkDraw(2, 3, 0, 255, 0, 255); | |
| 185 | |
| 186 setBindLocations(0, 3); | |
| 187 gl.disableVertexAttribArray(0); | |
| 188 gl.vertexAttrib4f(0, 1, 0, 0, 1); | |
| 189 checkDraw(0, 3, 255, 0, 0, 255); | |
| 190 | |
| 191 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 192 | |
| 193 debug(""); | |
| 194 | |
| 195 </script> | |
| 196 | |
| 197 </body> | |
| 198 </html> | |
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Chromium Code Reviews
Issue 1601093008:
Remove duplicated WebGL layout tests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master