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Side by Side Diff: conformance/extensions/oes-texture-half-float.html

Issue 41893003: Add ToT WebGL conformance tests : part 12 (last one) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/webgl/sdk/tests/
Patch Set: Created 7 years, 1 month ago
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1 <!--
2
3 /*
4 ** Copyright (c) 2013 The Khronos Group Inc.
5 **
6 ** Permission is hereby granted, free of charge, to any person obtaining a
7 ** copy of this software and/or associated documentation files (the
8 ** "Materials"), to deal in the Materials without restriction, including
9 ** without limitation the rights to use, copy, modify, merge, publish,
10 ** distribute, sublicense, and/or sell copies of the Materials, and to
11 ** permit persons to whom the Materials are furnished to do so, subject to
12 ** the following conditions:
13 **
14 ** The above copyright notice and this permission notice shall be included
15 ** in all copies or substantial portions of the Materials.
16 **
17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
24 */
25
26 -->
27
28 <!DOCTYPE html>
29 <html>
30 <head>
31 <meta charset="utf-8">
32 <title>WebGL OES_texture_half_float Conformance Tests</title>
33 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
34 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></s cript>
35 <script src="../../resources/js-test-pre.js"></script>
36 <script src="../resources/webgl-test.js"></script>
37 <script src="../resources/webgl-test-utils.js"></script>
38 </head>
39 <body>
40 <div id="description"></div>
41 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
42 <canvas id="canvas2d" style="width: 50px; height: 50px;"> </canvas>
43 <div id="console"></div>
44 <script id="testFragmentShader" type="x-shader/x-fragment">
45 precision mediump float;
46 uniform sampler2D tex;
47 uniform vec4 subtractor;
48 varying vec2 texCoord;
49 void main()
50 {
51 vec4 color = texture2D(tex, texCoord);
52 if (abs(color.r - subtractor.r) +
53 abs(color.g - subtractor.g) +
54 abs(color.b - subtractor.b) +
55 abs(color.a - subtractor.a) < 8.0) {
56 gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
57 } else {
58 gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
59 }
60 }
61 </script>
62 <!-- Shaders for testing half-floating-point render targets -->
63 <script id="positionVertexShader" type="x-shader/x-vertex">
64 attribute vec4 vPosition;
65 void main()
66 {
67 gl_Position = vPosition;
68 }
69 </script>
70 <script id="floatingPointFragmentShader" type="x-shader/x-fragment">
71 void main()
72 {
73 gl_FragColor = vec4(10000.0, 10000.0, 10000.0, 10000.0);
74 }
75 </script>
76 <script>
77 "use strict"
78 description("This test verifies the functionality of OES_texture_half_float with null/non-null ArrayBufferView");
79
80 debug("");
81 var wtu = WebGLTestUtils;
82 var canvas = document.getElementById("canvas");
83 var colorCanvas = document.getElementById("canvas2d");
84 colorCanvas.width = 2;
85 colorCanvas.height = 2;
86 var ctx = colorCanvas.getContext("2d");
87 ctx.fillStyle = "rgb(255,0,0)";
88 ctx.fillRect(0, 0, 2, 2);
89 var gl = wtu.create3DContext(canvas);
90 // This constant must be defined in order to run the texture creation test witho ut the extension enabled.
91 var halfFloatOESEnum = 0x8D61;
92 var ext = null;
93
94 if (!gl) {
95 testFailed("WebGL context does not exists");
96 } else {
97 testPassed("WebGL context exists");
98
99 // Verify that allocation of texture fails if extension is not enabled
100 runTextureCreationTest(false);
101 ext = gl.getExtension("OES_texture_half_float")
102 if (!ext) {
103 testPassed("No OES_texture_half_float support. This is legal");
104 } else {
105 testPassed("Successfully enabled OES_texture_half_float extension");
106
107 var program = wtu.setupTexturedQuad(gl);
108
109 // Check if creation of texture succeed's with various formats and null ArrayBufferView
110 var formats = [
111 { format: gl.RGBA, expected: [255, 0, 0, 255], },
112 { format: gl.RGB, expected: [255, 0, 0, 255], },
113 { format: gl.LUMINANCE, expected: [255, 255, 255, 255], },
114 { format: gl.ALPHA, expected: [ 0, 0, 0, 255], },
115 { format: gl.LUMINANCE_ALPHA, expected: [255, 255, 255, 255], },
116 ];
117 formats.forEach(function(f) {
118 runTextureCreationTest(true, f.format, null, f.expected);
119 });
120
121 // Texture creation should fail when passed with non-null ArrayBufferVie w
122 formats.forEach(function(f) {
123 var width = 2;
124 var height = 2;
125 var format = f.format;
126
127 // Float32Array
128 var float32Data = new Float32Array(width * height * getNumberOfChann els(format));
129 for (var ii = 0; ii < float32Data.length; ii++) {
130 float32Data[ii] = 1000;
131 }
132 runTextureCreationTest(true, format, float32Data);
133
134 // Int16Array
135 var int16Data = new Int16Array(width * height * getNumberOfChannels( format));
136 for (var ii = 0; ii < int16Data.length; ii++) {
137 int16Data[ii] = 1000;
138 }
139 runTextureCreationTest(true, format, int16Data);
140
141 // Uint16Array
142 var uint16Data = new Uint16Array(width * height * getNumberOfChannel s(format));
143 for (var ii = 0; ii < uint16Data.length; ii++) {
144 uint16Data[ii] = 1000;
145 }
146 runTextureCreationTest(true, format, uint16Data);
147 });
148
149 // Check if attaching texture as FBO target succeeds (Not mandatory)
150 runRenderTargetTest();
151 // Check of getExtension() returns same object
152 runUniqueObjectTest();
153 }
154 }
155
156 function getNumberOfChannels(format)
157 {
158 if (format == gl.RGBA)
159 return 4;
160 else if (format == gl.RGB)
161 return 3;
162 else if (format == gl.LUMINANCE || format == gl.ALPHA)
163 return 1;
164 else if (format == gl.LUMINANCE_ALPHA)
165 return 2;
166 }
167
168 function getFormatName(format)
169 {
170 if (format == gl.RGBA)
171 return "RGBA";
172 else if (format == gl.RGB)
173 return "RGB";
174 else if (format == gl.LUMINANCE)
175 return "LUMINANCE";
176 else if (format == gl.ALPHA)
177 return "ALPHA";
178 else if (format == gl.LUMINANCE_ALPHA)
179 return "LUMINANCE_ALPHA";
180 }
181
182 function allocateTexture()
183 {
184 var texture = gl.createTexture();
185 gl.bindTexture(gl.TEXTURE_2D, texture);
186 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
187 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
188 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
189 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
190 glErrorShouldBe(gl, gl.NO_ERROR, "texture parameter setup should succeed");
191 return texture;
192 }
193
194 function runTextureCreationTest(extensionEnabled, opt_format, opt_data, opt_expe cted)
195 {
196 var format = opt_format || gl.RGBA;
197 var data = opt_data || null;
198 var expectSuccess = true;
199
200 if (!extensionEnabled || data)
201 expectSuccess = false;
202 debug("Testing texture creation with extension " + (extensionEnabled ? "enab led" : "disabled") +
203 ", format " + getFormatName(format) + ", and data " + (data ? "non-nul l" : "null") +
204 ". Expect " + (expectSuccess ? "Success" : "Failure"));
205
206 var texture = allocateTexture();
207 var width = 2;
208 var height = 2;
209 gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, halfFloatO ESEnum, data);
210 if(!extensionEnabled) {
211 glErrorShouldBe(gl, gl.INVALID_ENUM, "Half floating point texture must b e diallowed if OES_texture_half_float isn't enabled");
212 return;
213 } else if (data) {
214 glErrorShouldBe(gl, gl.INVALID_OPERATION, "Half floating point texture a llocation must be diallowed when ArrayBufferView is not-null");
215 return;
216 } else {
217 glErrorShouldBe(gl, gl.NO_ERROR, "Half floating point texture allocation should succeed if OES_texture_half_float is enabled");
218
219 gl.texImage2D(gl.TEXTURE_2D, 0, format, format, halfFloatOESEnum, colorC anvas);
220 wtu.clearAndDrawUnitQuad(gl);
221 wtu.checkCanvas(gl, opt_expected);
222 // Check that linear fails.
223 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
224 wtu.clearAndDrawUnitQuad(gl);
225 wtu.checkCanvas(gl, [0, 0, 0, 255], "should be black");
226 }
227
228 }
229
230 function checkRenderingResults()
231 {
232 wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green");
233 }
234
235 function runRenderTargetTest(testProgram)
236 {
237 debug("");
238 debug("Testing half floating point render target");
239
240 var texture = allocateTexture();
241 var width = 2;
242 var height = 2;
243
244 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, ext.HALF _FLOAT_OES, null);
245 glErrorShouldBe(gl, gl.NO_ERROR, "Half floating point texture allocation sho uld succeed if OES_texture_half_float is enabled");
246
247 // Try to use this texture as render target
248 var fbo = gl.createFramebuffer();
249 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
250 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
251 gl.bindTexture(gl.TEXTURE_2D, null);
252
253 // It is legal for a WebGL implementation exposing the OES_texture_half_floa t extension to
254 // support half floating point textures but not as attachments to framebuffe r objects.
255 if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
256 debug("Half floating point render targets not supported -- this is legal ");
257 return;
258 }
259
260 var renderProgram =
261 wtu.setupProgram(gl,
262 ["positionVertexShader", "floatingPointFragmentShader"] ,
263 ['vPosition'],
264 [0]);
265 wtu.drawUnitQuad(gl);
266 glErrorShouldBe(gl, gl.NO_ERROR, "Rendering to half floating point texture s hould succeed");
267
268 // Now sample from the half floating-point texture and verify we got the cor rect values.
269 var texturedShaders = [
270 wtu.setupSimpleTextureVertexShader(gl),
271 "testFragmentShader"
272 ];
273 var testProgram =
274 wtu.setupProgram(gl,
275 [wtu.setupSimpleTextureVertexShader(gl), "testFragmentSh ader"],
276 ['vPosition', 'texCoord0'],
277 [0, 1]);
278 var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
279 gl.bindFramebuffer(gl.FRAMEBUFFER, null);
280 gl.bindTexture(gl.TEXTURE_2D, texture);
281 gl.useProgram(testProgram);
282 gl.uniform4fv(gl.getUniformLocation(testProgram, "subtractor"), [10000, 1000 0, 10000, 10000]);
283 wtu.drawUnitQuad(gl);
284 glErrorShouldBe(gl, gl.NO_ERROR, "rendering from half floating point texture should succeed");
285 checkRenderingResults();
286 }
287
288 function runUniqueObjectTest()
289 {
290 debug("Testing that getExtension() returns the same object each time");
291 gl.getExtension("OES_texture_half_float").myProperty = 2;
292 gc();
293 shouldBe('gl.getExtension("OES_texture_half_float").myProperty', '2');
294 }
295
296 debug("");
297 var successfullyParsed = true;
298 </script>
299 <script src="../../resources/js-test-post.js"></script>
300
301 </body>
302 </html>
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