<!doctype html> <title>compressedTexSubImage2D</title> <link rel=author href=mailto:Ms2ger@gmail.com title=Ms2ger> <link rel=help href=https://www.khronos.org/registry/webgl/specs/latest/#5.14.8> <script src=/resources/testharness.js></script> <script src=/resources/testharnessreport.js></script> <script src=common.js></script> <div id=log></div> <script> test(function() { var COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0; var gl = getGl(); var tex = gl.createTexture(); gl.bindTexture(gl.TEXTURE_2D, tex); shouldGenerateGLError(gl, gl.INVALID_ENUM, function() { gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 10, 10, COMPRESSED_RGB_S3TC_DXT1_EXT, new Uint8Array(8)); }); shouldGenerateGLError(gl, gl.INVALID_ENUM, function() { gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 10, 10, COMPRESSED_RGB_S3TC_DXT1_EXT, new Uint8Array(8), null); }); test(function() { assert_throws(new TypeError(), function() { gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 10, 10, COMPRESSED_RGB_S3TC_DXT1_EXT); }); }, "Should throw a TypeError when passing too few arguments."); }); </script>