content/canvas/test/webgl-conformance/conformance/extensions/webgl-depth-texture.html@6474c204b198
content/canvas/test/webgl-conformance/conformance/extensions/webgl-depth-texture.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!--
3 /*
4 ** Copyright (c) 2012 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 */
26 -->
27 <!DOCTYPE html>
28 <html>
29 <head>
30 <meta charset="utf-8">
31 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
32 <script src="../../resources/js-test-pre.js"></script>
33 <script src="../resources/webgl-test.js"></script>
34 <script src="../resources/webgl-test-utils.js"></script>
35 <title>WebGL WEBGL_depth_texture Conformance Tests</title>
36 </head>
37 <body>
38 <script id="vshader" type="x-shader/x-vertex">
39 attribute vec4 a_position;
40 void main()
41 {
42 gl_Position = a_position;
43 }
44 </script>
46 <script id="fshader" type="x-shader/x-fragment">
47 precision mediump float;
48 uniform sampler2D u_texture;
49 uniform vec2 u_resolution;
50 void main()
51 {
52 vec2 texcoord = gl_FragCoord.xy / u_resolution;
53 gl_FragColor = texture2D(u_texture, texcoord);
54 }
55 </script>
56 <div id="description"></div>
57 <div id="console"></div>
58 <canvas id="canvas" width="8" height="8" style="width: 8px; height: 8px;"></canvas>
59 <script>
60 if (window.initNonKhronosFramework) {
61 window.initNonKhronosFramework(false);
62 }
63 description("This test verifies the functionality of the WEBGL_depth_texture extension, if it is available.");
65 debug("");
67 var wtu = WebGLTestUtils;
68 var canvas = document.getElementById("canvas");
69 var gl = wtu.create3DContext(canvas, {antialias: false});
70 var program = wtu.setupTexturedQuad(gl);
71 var ext = null;
72 var vao = null;
73 var tex;
74 var name;
75 var supportedFormats;
77 if (!gl) {
78 testFailed("WebGL context does not exist");
79 } else {
80 testPassed("WebGL context exists");
82 // Run tests with extension disabled
83 runTestDisabled();
85 // Query the extension and store globally so shouldBe can access it
86 ext = wtu.getExtensionWithKnownPrefixes(gl, "WEBGL_depth_texture");
87 if (!ext) {
88 testPassed("No WEBGL_depth_texture support -- this is legal");
89 runSupportedTest(false);
90 } else {
91 testPassed("Successfully enabled WEBGL_depth_texture extension");
93 runSupportedTest(true);
94 runTestExtension();
95 }
96 }
98 function runSupportedTest(extensionEnabled) {
99 var name = wtu.getSupportedExtensionWithKnownPrefixes(gl, "WEBGL_depth_texture");
100 if (name !== undefined) {
101 if (extensionEnabled) {
102 testPassed("WEBGL_depth_texture listed as supported and getExtension succeeded");
103 } else {
104 testFailed("WEBGL_depth_texture listed as supported but getExtension failed");
105 }
106 } else {
107 if (extensionEnabled) {
108 testFailed("WEBGL_depth_texture not listed as supported but getExtension succeeded");
109 } else {
110 testPassed("WEBGL_depth_texture not listed as supported and getExtension failed -- this is legal");
111 }
112 }
113 }
116 function runTestDisabled() {
117 debug("Testing binding enum with extension disabled");
119 var tex = gl.createTexture();
120 gl.bindTexture(gl.TEXTURE_2D, tex);
121 shouldGenerateGLError(gl, gl.INVALID_ENUM, 'gl.texImage2D(gl.TEXTURE_2D, 0, gl.DEPTH_COMPONENT, 1, 1, 0, gl.DEPTH_COMPONENT, gl.UNSIGNED_SHORT, null)');
122 shouldGenerateGLError(gl, gl.INVALID_ENUM, 'gl.texImage2D(gl.TEXTURE_2D, 0, gl.DEPTH_COMPONENT, 1, 1, 0, gl.DEPTH_COMPONENT, gl.UNSIGNED_INT, null)');
123 }
126 function dumpIt(gl, res, msg) {
127 return; // comment out to debug
128 debug(msg);
129 var actualPixels = new Uint8Array(res * res * 4);
130 gl.readPixels(0, 0, res, res, gl.RGBA, gl.UNSIGNED_BYTE, actualPixels);
132 for (var yy = 0; yy < res; ++yy) {
133 var strs = [];
134 for (var xx = 0; xx < res; ++xx) {
135 var actual = (yy * res + xx) * 4;
136 strs.push("(" + actualPixels[actual] + "," + actualPixels[actual+1] + "," + actualPixels[actual + 2] + "," + actualPixels[actual + 3] + ")");
137 }
138 debug(strs.join(" "));
139 }
140 }
141 function runTestExtension() {
142 debug("Testing WEBGL_depth_texture");
144 var res = 8;
146 // make canvas for testing.
147 canvas2 = document.createElement("canvas");
148 canvas2.width = res;
149 canvas2.height = res;
150 var ctx = canvas2.getContext("2d");
151 ctx.fillStyle = "blue";
152 ctx.fillRect(0, 0, canvas2.width, canvas2.height);
154 var program = wtu.setupProgram(gl, ['vshader', 'fshader'], ['a_position']);
155 gl.useProgram(program);
156 gl.uniform2f(gl.getUniformLocation(program, "u_resolution"), res, res);
158 var buffer = gl.createBuffer();
159 gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
160 gl.bufferData(
161 gl.ARRAY_BUFFER,
162 new Float32Array(
163 [ 1, 1, 1,
164 -1, 1, 0,
165 -1, -1, -1,
166 1, 1, 1,
167 -1, -1, -1,
168 1, -1, 0,
169 ]),
170 gl.STATIC_DRAW);
171 gl.enableVertexAttribArray(0);
172 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
174 var types = [
175 {obj: 'gl', attachment: 'DEPTH_ATTACHMENT', format: 'DEPTH_COMPONENT', type: 'UNSIGNED_SHORT', data: 'new Uint16Array(1)' },
176 {obj: 'gl', attachment: 'DEPTH_ATTACHMENT', format: 'DEPTH_COMPONENT', type: 'UNSIGNED_INT', data: 'new Uint32Array(1)' },
177 {obj: 'ext', attachment: 'DEPTH_STENCIL_ATTACHMENT', format: 'DEPTH_STENCIL', type: 'UNSIGNED_INT_24_8_WEBGL', data: 'new Uint32Array(1)' }
178 ];
180 for (var ii = 0; ii < types.length; ++ii) {
181 var typeInfo = types[ii];
182 var type = typeInfo.type;
183 var typeStr = typeInfo.obj + '.' + type;
185 debug("");
186 debug("testing: " + type);
188 // check that cubemaps are not allowed.
189 var cubeTex = gl.createTexture();
190 gl.bindTexture(gl.TEXTURE_CUBE_MAP, cubeTex);
191 var targets = [
192 'TEXTURE_CUBE_MAP_POSITIVE_X',
193 'TEXTURE_CUBE_MAP_NEGATIVE_X',
194 'TEXTURE_CUBE_MAP_POSITIVE_Y',
195 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
196 'TEXTURE_CUBE_MAP_POSITIVE_Z',
197 'TEXTURE_CUBE_MAP_NEGATIVE_Z'
198 ];
199 for (var tt = 0; tt < targets.length; ++tt) {
200 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.texImage2D(gl.' + targets[ii] + ', 1, gl.' + typeInfo.format + ', 1, 1, 0, gl.' + typeInfo.format + ', ' + typeStr + ', null)');
201 }
203 // check 2d textures.
204 tex = gl.createTexture();
205 gl.bindTexture(gl.TEXTURE_2D, tex);
206 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
207 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
208 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
209 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
211 // test level > 0
212 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.texImage2D(gl.TEXTURE_2D, 1, gl.' + typeInfo.format + ', 1, 1, 0, gl.' + typeInfo.format + ', ' + typeStr + ', null)');
214 // test with data
215 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.texImage2D(gl.TEXTURE_2D, 0, gl.' + typeInfo.format + ', 1, 1, 0, gl.' + typeInfo.format + ', ' + typeStr + ', ' + typeInfo.data + ')');
217 // test with canvas
218 shouldGenerateGLError(gl, [gl.INVALID_VALUE, gl.INVALID_ENUM, gl.INVALID_OPERATION], 'gl.texImage2D(gl.TEXTURE_2D, 0, gl.' + typeInfo.format + ', gl.' + typeInfo.format + ', ' + typeStr + ', canvas2)');
220 // test copyTexImage2D
221 shouldGenerateGLError(gl, [gl.INVALID_ENUM, gl.INVALID_OPERATION], 'gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.' + typeInfo.format + ', 0, 0, 1, 1, 0)');
223 // test real thing
224 shouldGenerateGLError(gl, gl.NO_ERROR, 'gl.texImage2D(gl.TEXTURE_2D, 0, gl.' + typeInfo.format + ', ' + res + ', ' + res + ', 0, gl.' + typeInfo.format + ', ' + typeStr + ', null)');
226 // test texSubImage2D
227 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 1, gl.' + typeInfo.format + ', ' + typeStr + ', ' + typeInfo.data + ')');
229 // test copyTexSubImage2D
230 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, 1, 1)');
232 // test generateMipmap
233 shouldGenerateGLError(gl, gl.INVALID_OPERATION, 'gl.generateMipmap(gl.TEXTURE_2D)');
235 var fbo = gl.createFramebuffer();
236 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
237 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl[typeInfo.attachment], gl.TEXTURE_2D, tex, 0);
238 // TODO: remove this check if the spec is updated to require these combinations to work.
239 if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE)
240 {
241 // try adding a color buffer.
242 var colorTex = gl.createTexture();
243 gl.bindTexture(gl.TEXTURE_2D, colorTex);
244 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
245 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
246 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
247 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
248 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, res, res, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
249 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, colorTex, 0);
250 shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
251 }
253 // use the default texture to render with while we return to the depth texture.
254 gl.bindTexture(gl.TEXTURE_2D, null);
256 // render the z-quad
257 gl.enable(gl.DEPTH_TEST);
258 gl.clearColor(1, 0, 0, 1);
259 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
260 gl.drawArrays(gl.TRIANGLES, 0, 6);
262 dumpIt(gl, res, "--first--");
264 // render the depth texture.
265 gl.bindFramebuffer(gl.FRAMEBUFFER, null);
266 gl.bindTexture(gl.TEXTURE_2D, tex);
267 gl.clearColor(0, 0, 1, 1);
268 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
269 gl.drawArrays(gl.TRIANGLES, 0, 6);
271 var actualPixels = new Uint8Array(res * res * 4);
272 gl.readPixels(0, 0, res, res, gl.RGBA, gl.UNSIGNED_BYTE, actualPixels);
274 dumpIt(gl, res, "--depth--");
276 // Check that each pixel's RGB are the same and that it's value is less
277 // than the previous pixel in either direction. Basically verify we have a
278 // gradient.
279 var success = true;
280 for (var yy = 0; yy < res; ++yy) {
281 for (var xx = 0; xx < res; ++xx) {
282 var actual = (yy * res + xx) * 4;
283 var left = actual - 4;
284 var down = actual - res * 4;
286 if (actualPixels[actual + 0] != actualPixels[actual + 1]) {
287 testFailed('R != G');
288 success = false;
289 }
290 if (actualPixels[actual + 0] != actualPixels[actual + 2]) {
291 testFailed('R != B');
292 success = false;
293 }
294 // ALPHA is implementation dependent
295 if (actualPixels[actual + 3] != 0xFF && actualPixels[actual + 3] != actualPixels[actual + 0]) {
296 testFailed('A != 255 && A != R');
297 success = false;
298 }
300 if (xx > 0) {
301 if (actualPixels[actual] <= actualPixels[left]) {
302 testFailed("actual(" + actualPixels[actual] + ") < left(" + actualPixels[left] + ")");
303 success = false;
304 }
305 }
306 if (yy > 0) {
307 if (actualPixels[actual] <= actualPixels[down]) {
308 testFailed("actual(" + actualPixels[actual] + ") < down(" + actualPixels[down] + ")");
309 success = false;
310 }
311 }
312 }
313 }
315 // Check that bottom left corner is vastly different thatn top right.
316 if (actualPixels[(res * res - 1) * 4] - actualPixels[0] < 0xC0) {
317 testFailed("corners are not different enough");
318 success = false;
319 }
321 if (success) {
322 testPassed("depth texture rendered correctly.");
323 }
325 // check limitations
326 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
327 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl[typeInfo.attachment], gl.TEXTURE_2D, null, 0);
328 var badAttachment = typeInfo.attachment == 'DEPTH_ATTACHMENT' ? 'DEPTH_STENCIL_ATTACHMENT' : 'DEPTH_ATTACHMENT';
329 shouldGenerateGLError(gl, gl.NO_ERROR, 'gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.' + badAttachment + ', gl.TEXTURE_2D, tex, 0)');
330 shouldNotBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
331 shouldGenerateGLError(gl, gl.INVALID_FRAMEBUFFER_OPERATION, 'gl.clear(gl.DEPTH_BUFFER_BIT)');
332 gl.bindFramebuffer(gl.FRAMEBUFFER, null);
333 shouldBe('gl.getError()', 'gl.NO_ERROR');
334 }
335 }
337 debug("");
338 successfullyParsed = true;
339 </script>
340 <script src="../../resources/js-test-post.js"></script>
341 </body>
342 </html>
