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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL texture size limit conformance test.</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <canvas id="example" width="32" height="32" style="width: 40px; height: 40px;"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("Checks various size limits of textures") |
| var canvas; |
| |
| function numLevelsFromSize(size) { |
| var levels = 0; |
| while ((size >> levels) > 0) { |
| ++levels; |
| } |
| return levels; |
| } |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("example"); |
| var tests = [ |
| { format: gl.ALPHA, type: gl.UNSIGNED_BYTE, size: 1, dataType: Uint8Array }, |
| { format: gl.LUMINANCE, type: gl.UNSIGNED_BYTE, size: 1, dataType: Uint8Array }, |
| { format: gl.LUMINANCE_ALPHA, type: gl.UNSIGNED_BYTE, size: 2, dataType: Uint8Array }, |
| { format: gl.RGB, type: gl.UNSIGNED_BYTE, size: 3, dataType: Uint8Array }, |
| { format: gl.RGB, type: gl.UNSIGNED_SHORT_5_6_5, size: 1, dataType: Uint16Array }, |
| { format: gl.RGBA, type: gl.UNSIGNED_BYTE, size: 4, dataType: Uint8Array }, |
| { format: gl.RGBA, type: gl.UNSIGNED_SHORT_4_4_4_4, size: 1, dataType: Uint16Array }, |
| { format: gl.RGBA, type: gl.UNSIGNED_SHORT_5_5_5_1, size: 1, dataType: Uint16Array } |
| ]; |
| |
| // Note: We expressly only use 2 textures because first a texture will be defined |
| // using all mip levels of 1 format, then for a moment it will have mixed formats which |
| // may uncover bugs. |
| var targets = [ |
| { target: gl.TEXTURE_2D, |
| maxSize: gl.getParameter(gl.MAX_TEXTURE_SIZE), |
| maxLevel: 1000, |
| targets: [gl.TEXTURE_2D] |
| }, |
| { target: gl.TEXTURE_CUBE_MAP, |
| maxSize: gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE), |
| maxLevel: 5, |
| targets: [ |
| gl.TEXTURE_CUBE_MAP_POSITIVE_X, |
| gl.TEXTURE_CUBE_MAP_NEGATIVE_X, |
| gl.TEXTURE_CUBE_MAP_POSITIVE_Y, |
| gl.TEXTURE_CUBE_MAP_NEGATIVE_Y, |
| gl.TEXTURE_CUBE_MAP_POSITIVE_Z, |
| gl.TEXTURE_CUBE_MAP_NEGATIVE_Z |
| ] |
| } |
| ]; |
| |
| gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1); |
| |
| var trg = 0; |
| var tt = 0; |
| var tex = null; |
| runNextTest(); |
| |
| function runNextTest() { |
| var t = targets[trg]; |
| |
| if (tt == 0) { |
| gl.deleteTexture(tex); |
| tex = gl.createTexture(); |
| gl.bindTexture(t.target, tex); |
| |
| debug(""); |
| debug("max size for " + wtu.glEnumToString(gl, t.target) + ": " + t.maxSize); |
| var numLevels = numLevelsFromSize(t.maxSize); |
| debug("num levels " + numLevels); |
| } |
| |
| var test = tests[tt]; |
| testFormatType(t, test); |
| ++tt; |
| if (tt == tests.length) { |
| tt = 0; |
| ++trg; |
| if (trg == targets.length) { |
| finishTest(); |
| return; |
| } |
| } |
| wtu.dispatchTask(runNextTest) |
| } |
| |
| function testFormatType(t, test) { |
| debug(""); |
| debug("testing: " + wtu.glEnumToString(gl, test.format) + ", " + wtu.glEnumToString(gl, test.type)); |
| |
| for (var j = 0; j < t.targets.length; ++j) { |
| var target = t.targets[j]; |
| debug(""); |
| debug(wtu.glEnumToString(gl, target)); |
| var numLevels = numLevelsFromSize(t.maxSize); |
| |
| // out of bounds tests |
| for (var i = 0; i < numLevels; i++) { |
| // width and height out of bounds |
| var size = t.maxSize >> i; |
| gl.texImage2D(target, i, test.format, size + 1, size + 1, 0, test.format, test.type, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "width or height out of bounds: should generate INVALID_VALUE: level is " + i + ", size is " |
| + (size + 1) + "x" + (size + 1)); |
| } |
| // level out of bounds |
| gl.texImage2D(target, numLevels, test.format, 1, 1, 0, test.format, test.type, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "level out of bounds: should generate INVALID_VALUE: level is: " |
| + numLevels + ", size is 1x1."); |
| |
| // Probe to discover the max non-OOM level. |
| // For instance, on some drivers (at least Intel+Mesa) we can create |
| // a maxLevel L8 texture, but only a maxLevel-1 RGB8 texture. |
| var maxLevelsForFormat = numLevels; |
| while (true) { |
| gl.texImage2D(target, maxLevelsForFormat-1, test.format, 1, 1, 0, test.format, test.type, null); |
| var err = gl.getError(); |
| if (err == gl.OUT_OF_MEMORY) { |
| debug("Probe failed for level=" + (maxLevelsForFormat-1) + ", reducing..."); |
| maxLevelsForFormat -= 1; |
| if (!maxLevelsForFormat) { |
| testFailed("Failed to allocate any levels for format " + test.format); |
| return; |
| } |
| continue; |
| } |
| if (err) { |
| testFailed("Should not hit non-OOM errors during max level probing."); |
| return; |
| } |
| break; |
| } |
| var numTestLevels = Math.min(maxLevelsForFormat, t.maxLevel); |
| for (var l = 0; l < numTestLevels; ++l) { |
| // Do bottom levels first; |
| var size = 1 << l; |
| var level = maxLevelsForFormat - l - 1; |
| var otherDimension = t.target == gl.TEXTURE_2D ? 1 : size; |
| gl.texImage2D(target, level, test.format, size, otherDimension, 0, test.format, test.type, null); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + size + "x" + otherDimension); |
| if (otherDimension != size) { |
| gl.texImage2D(target, level, test.format, otherDimension, size, 0, test.format, test.type, null); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + otherDimension + "x" + size); |
| } |
| } |
| } |
| } |
| |
| var successfullyParsed = true; |
| </script> |
| </body> |
| </html> |
| |