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Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
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<title>WebGL WEBGL_compressed_texture_etc Conformance Tests</title>
<LINK rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
<script src="../../js/tests/compressed-texture-utils.js"></script>
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<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description("This test verifies the functionality of the WEBGL_compressed_texture_etc extension, if it is available.");
debug("");
var validFormats = {
COMPRESSED_R11_EAC : 0x9270,
COMPRESSED_SIGNED_R11_EAC : 0x9271,
COMPRESSED_RG11_EAC : 0x9272,
COMPRESSED_SIGNED_RG11_EAC : 0x9273,
COMPRESSED_RGB8_ETC2 : 0x9274,
COMPRESSED_SRGB8_ETC2 : 0x9275,
COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9276,
COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 : 0x9277,
COMPRESSED_RGBA8_ETC2_EAC : 0x9278,
COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : 0x9279
};
function expectedByteLength(width, height, format) {
var blockSizeInBytes = 8;
var largerBlockFormats = [
validFormats.COMPRESSED_RG11_EAC,
validFormats.COMPRESSED_SIGNED_RG11_EAC,
validFormats.COMPRESSED_RGBA8_ETC2_EAC,
validFormats.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC];
if (largerBlockFormats.indexOf(format) >= 0) {
blockSizeInBytes = 16;
}
return Math.floor((width + 3) / 4) * Math.floor((height + 3) / 4) * blockSizeInBytes;
}
function getBlockDimensions(format) {
return {width: 4, height: 4};
}
var wtu = WebGLTestUtils;
var ctu = CompressedTextureUtils;
var contextVersion = wtu.getDefault3DContextVersion();
var gl = wtu.create3DContext();
var WEBGL_compressed_texture_etc;
var formats = null;
function runTest() {
if (!gl) {
testFailed("context does not exist");
} else {
testPassed("context exists");
ctu.testCompressedFormatsUnavailableWhenExtensionDisabled(gl, validFormats, expectedByteLength, 4);
WEBGL_compressed_texture_etc = gl.getExtension("WEBGL_compressed_texture_etc");
wtu.runExtensionSupportedTest(gl, "WEBGL_compressed_texture_etc", WEBGL_compressed_texture_etc !== null);
var isPositive = WEBGL_compressed_texture_etc !== null;
if (isPositive) {
// Test that enum values are listed correctly in supported formats and in the extension object.
ctu.testCompressedFormatsListed(gl, validFormats);
ctu.testCorrectEnumValuesInExt(WEBGL_compressed_texture_etc, validFormats);
// Test that texture upload buffer size is validated correctly.
ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions);
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
for (var name in validFormats) {
if (validFormats.hasOwnProperty(name)) {
var format = validFormats[name];
wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, " + format + ", 4, 4, 0, new Uint8Array(" + expectedByteLength(4, 4, format) + "))");
wtu.shouldGenerateGLError(gl, gl.NO_ERROR, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 4, 4, " + format + ", new Uint8Array(" + expectedByteLength(4, 4, format) + "))");
}
}
}
var tex2 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex2);
debug("");
if (contextVersion >= 2) {
var expectedError = isPositive ? gl.INVALID_OPERATION: [gl.INVALID_ENUM, gl.INVALID_OPERATION];
// `null` coerces into `0` for the PBO entrypoint, yielding INVALID_OP due to no PBO bound.
wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, 0, null)");
wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)");
wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, 0, null)");
wtu.shouldGenerateGLError(gl, expectedError, "gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, 0, null)");
} else {
shouldThrow("gl.compressedTexImage2D(gl.TEXTURE_2D, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 0, null)");
shouldThrow("gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)");
shouldThrow("gl.compressedTexImage3D(gl.TEXTURE_2D_ARRAY, 0, validFormats.COMPRESSED_R11_EAC, 4, 4, 4, 0, null)");
shouldThrow("gl.compressedTexSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, 0, 0, 0, validFormats.COMPRESSED_R11_EAC, null)");
}
}
}
runTest();
var successfullyParsed = true;
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