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| 1 /* |
| 2 ** Copyright (c) 2013 The Khronos Group Inc. |
| 3 ** |
| 4 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 5 ** copy of this software and/or associated documentation files (the |
| 6 ** "Materials"), to deal in the Materials without restriction, including |
| 7 ** without limitation the rights to use, copy, modify, merge, publish, |
| 8 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 9 ** permit persons to whom the Materials are furnished to do so, subject to |
| 10 ** the following conditions: |
| 11 ** |
| 12 ** The above copyright notice and this permission notice shall be included |
| 13 ** in all copies or substantial portions of the Materials. |
| 14 ** |
| 15 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 22 */ |
| 23 |
| 24 function generateTest(extensionTypeName, extensionName, pixelType, prologue) { |
| 25 var wtu = WebGLTestUtils; |
| 26 var gl = null; |
| 27 var successfullyParsed = false; |
| 28 |
| 29 var init = function() |
| 30 { |
| 31 description("This test verifies the functionality of the " + extensionNa
me + " extension, if it is available."); |
| 32 |
| 33 var canvas = document.getElementById("canvas"); |
| 34 gl = wtu.create3DContext(canvas); |
| 35 |
| 36 if (!prologue(gl, extensionTypeName)) { |
| 37 finishTest(); |
| 38 return; |
| 39 } |
| 40 |
| 41 // Before the extension is enabled |
| 42 var extensionEnabled = false; |
| 43 runTestSuite(extensionEnabled); |
| 44 |
| 45 if (!gl.getExtension(extensionName)) |
| 46 testPassed("No " + extensionName + " support -- this is legal"); |
| 47 else { |
| 48 // After the extension is enabled |
| 49 extensionEnabled = true; |
| 50 runTestSuite(extensionEnabled); |
| 51 } |
| 52 |
| 53 finishTest(); |
| 54 } |
| 55 |
| 56 function runTestSuite(extensionEnabled) |
| 57 { |
| 58 var magF = [gl.NEAREST, gl.LINEAR]; |
| 59 var minF = [gl.NEAREST, gl.LINEAR, gl.NEAREST_MIPMAP_NEAREST, gl.NEAREST
_MIPMAP_LINEAR, gl.LINEAR_MIPMAP_NEAREST, gl.LINEAR_MIPMAP_LINEAR]; |
| 60 var tex2DFShader = [ |
| 61 'uniform sampler2D tex;', |
| 62 'void main() {', |
| 63 ' gl_FragData[0] = texture2D(tex, vec2(0.5, 0.5)) * vec4(4.0, 2.0
, 2.0, 1);', |
| 64 '}'].join('\n'); |
| 65 |
| 66 var positionVertexShader = [ |
| 67 'attribute vec4 vPosition;', |
| 68 'void main() {', |
| 69 ' gl_Position = vPosition;', |
| 70 '}'].join('\n'); |
| 71 |
| 72 var texCubeFShader = [ |
| 73 'uniform samplerCube tex;', |
| 74 'void main() {', |
| 75 ' gl_FragColor = textureCube(tex, normalize(vec3(0.5, 0.5, 1))) *
vec4(4.0, 2.0, 2.0, 1);', |
| 76 '}'].join('\n'); |
| 77 |
| 78 var vs = wtu.loadShader(gl, positionVertexShader, gl.VERTEX_SHADER); |
| 79 var fs_2d = wtu.loadShader(gl, tex2DFShader, gl.FRAGMENT_SHADER); |
| 80 var fs_cube = wtu.loadShader(gl, texCubeFShader, gl.FRAGMENT_SHADER); |
| 81 |
| 82 // TEXTURE_2D |
| 83 var program = wtu.setupProgram(gl, [vs, fs_2d]); |
| 84 gl.useProgram(program); |
| 85 wtu.setupUnitQuad(gl); |
| 86 for (var kk = 0; kk < 2; ++kk) { |
| 87 for (var ii = 0; ii < 6; ++ii) { |
| 88 var linear = false; |
| 89 if (magF[kk] == gl.LINEAR || (minF[ii] != gl.NEAREST && minF[ii]
!= gl.NEAREST_MIPMAP_NEAREST)) |
| 90 linear = true; |
| 91 var color = (!extensionEnabled && linear) ? [0, 0, 0, 255] : [25
5, 255, 255, 255]; |
| 92 runEachTest(gl.TEXTURE_2D, magF[kk], minF[ii], linear, extension
Enabled, color); |
| 93 } |
| 94 } |
| 95 |
| 96 // TEXTURE_CUBE_MAP |
| 97 var programCube = wtu.setupProgram(gl, [vs, fs_cube]); |
| 98 gl.useProgram(programCube); |
| 99 wtu.setupUnitQuad(gl); |
| 100 for (var kk = 0; kk < 2; ++kk) { |
| 101 for (var ii = 0; ii < 6; ++ii) { |
| 102 var linear = false; |
| 103 if (magF[kk] == gl.LINEAR || (minF[ii] != gl.NEAREST && minF[ii]
!= gl.NEAREST_MIPMAP_NEAREST)) |
| 104 linear = true; |
| 105 var color = (!extensionEnabled && linear) ? [0, 0, 0, 255] : [25
5, 255, 255, 255]; |
| 106 runEachTest(gl.TEXTURE_CUBE_MAP, magF[kk], minF[ii], linear, ext
ensionEnabled, color); |
| 107 } |
| 108 } |
| 109 } |
| 110 |
| 111 function runEachTest(textureTarget, magFilter, minFilter, linear, extensionE
nabled, expected) |
| 112 { |
| 113 var format = gl.RGBA; |
| 114 var numberOfChannels = 4; |
| 115 debug(""); |
| 116 debug("testing target: " + wtu.glEnumToString(gl,textureTarget) + |
| 117 ", testing format: " + wtu.glEnumToString(gl, format) + |
| 118 ", magFilter is: " + wtu.glEnumToString(gl, magFilter) + |
| 119 ", minFilter is: " + wtu.glEnumToString(gl, minFilter) + |
| 120 ", " + extensionName + " is " + (extensionEnabled ? "enabled": "not
enabled") |
| 121 ); |
| 122 |
| 123 // Generate data. |
| 124 var width = 4; |
| 125 var height = 4; |
| 126 var canvas2d = document.createElement('canvas'); |
| 127 canvas2d.width = width; |
| 128 canvas2d.height = height; |
| 129 var ctx2d = canvas2d.getContext('2d'); |
| 130 var color = [64, 128, 128, 255]; |
| 131 ctx2d.fillStyle = "rgba(" + color[0] + "," + color[1] + "," + color[2] +
"," + color[3] + ")"; |
| 132 ctx2d.fillRect(0, 0, width, height); |
| 133 |
| 134 var texture = gl.createTexture(); |
| 135 gl.bindTexture(textureTarget, texture); |
| 136 gl.texParameteri(textureTarget, gl.TEXTURE_MAG_FILTER, magFilter); |
| 137 gl.texParameteri(textureTarget, gl.TEXTURE_MIN_FILTER, minFilter); |
| 138 gl.texParameteri(textureTarget, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); |
| 139 gl.texParameteri(textureTarget, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); |
| 140 |
| 141 if (textureTarget == gl.TEXTURE_2D) { |
| 142 gl.texImage2D(gl.TEXTURE_2D, 0, format, format, gl[pixelType], canva
s2d); |
| 143 if (minFilter != gl.NEAREST && minFilter != gl.LINEAR) |
| 144 gl.generateMipmap(gl.TEXTURE_2D); |
| 145 } |
| 146 else if (textureTarget == gl.TEXTURE_CUBE_MAP) { |
| 147 var targets = [ |
| 148 gl.TEXTURE_CUBE_MAP_POSITIVE_X, |
| 149 gl.TEXTURE_CUBE_MAP_NEGATIVE_X, |
| 150 gl.TEXTURE_CUBE_MAP_POSITIVE_Y, |
| 151 gl.TEXTURE_CUBE_MAP_NEGATIVE_Y, |
| 152 gl.TEXTURE_CUBE_MAP_POSITIVE_Z, |
| 153 gl.TEXTURE_CUBE_MAP_NEGATIVE_Z]; |
| 154 for (var tt = 0; tt < targets.length; ++tt) |
| 155 gl.texImage2D(targets[tt], 0, format, format, gl[pixelType],
canvas2d); |
| 156 if (minFilter != gl.NEAREST && minFilter != gl.LINEAR) |
| 157 gl.generateMipmap(gl.TEXTURE_CUBE_MAP); |
| 158 } |
| 159 wtu.clearAndDrawUnitQuad(gl); |
| 160 if (!linear) { |
| 161 glErrorShouldBe(gl, gl.NO_ERROR, extensionTypeName + " texture with
non-Linear filter should succeed with NO_ERROR no matter whether " + extensionNa
me + " is enabled or not"); |
| 162 } else if (!extensionEnabled) { |
| 163 glErrorShouldBe(gl, gl.NO_ERROR, extensionTypeName + " texture with
Linear filter should produce [0, 0, 0, 1.0] with NO_ERROR if " + extensionName +
" isn't enabled"); |
| 164 } else { |
| 165 glErrorShouldBe(gl, gl.NO_ERROR, extensionTypeName + " texture with
Linear filter should succeed with NO_ERROR if " + extensionTypeName + " is enabl
ed"); |
| 166 } |
| 167 |
| 168 wtu.checkCanvas(gl, expected, "should be " + expected[0] + "," + expecte
d[1] + "," + expected[2] + "," + expected[3]); |
| 169 } |
| 170 |
| 171 return init; |
| 172 } |
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