| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL EXT_texture_compression_rgtc 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> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("This test verifies the functionality of the EXT_texture_compression_rgtc extension, if it is available."); |
| |
| debug(""); |
| |
| var validFormats = { |
| COMPRESSED_RED_RGTC1_EXT: 0x8DBB, |
| COMPRESSED_SIGNED_RED_RGTC1_EXT: 0x8DBC, |
| COMPRESSED_RED_GREEN_RGTC2_EXT: 0x8DBD, |
| COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT: 0x8DBE |
| }; |
| |
| function expectedByteLength(width, height, format) { |
| if (format == validFormats.COMPRESSED_RED_RGTC1_EXT || format == validFormats.COMPRESSED_SIGNED_RED_RGTC1_EXT) { |
| return Math.ceil(width / 4) * Math.ceil(height / 4) * 8; |
| } |
| else { |
| return Math.ceil(width / 4) * Math.ceil(height / 4) * 16; |
| } |
| } |
| |
| function getBlockDimensions(format) { |
| return {width: 4, height: 4}; |
| } |
| |
| var wtu = WebGLTestUtils; |
| var ctu = CompressedTextureUtils; |
| var contextVersion = wtu.getDefault3DContextVersion(); |
| var gl = wtu.create3DContext(); |
| var ext; |
| |
| var formats = null; |
| |
| function runTestExtension() { |
| // Test that enum values are listed correctly in supported formats and in the extension object. |
| ctu.testCompressedFormatsListed(gl, validFormats); |
| ctu.testCorrectEnumValuesInExt(ext, validFormats); |
| // Test that texture upload buffer size is validated correctly. |
| ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions); |
| // Test TexSubImage validation on dimensions |
| // CompressedTexSubImage* will result in an |
| // INVALID_OPERATION error only if one of the following conditions occurs: |
| // * <width> is not a multiple of four, and <width> plus <xoffset> is not |
| // equal to TEXTURE_WIDTH; |
| // * <height> is not a multiple of four, and <height> plus <yoffset> is |
| // not equal to TEXTURE_HEIGHT; or |
| // * <xoffset> or <yoffset> is not a multiple of four. |
| ctu.testTexSubImageDimensions(gl, ext, validFormats, expectedByteLength, getBlockDimensions, |
| 16, 16, [ |
| { xoffset: 0, yoffset: 0, width: 4, height: 3, |
| expectation: gl.INVALID_OPERATION, message: "height is not a multiple of 4" }, |
| { xoffset: 0, yoffset: 0, width: 3, height: 4, |
| expectation: gl.INVALID_OPERATION, message: "width is not a multiple of 4" }, |
| { xoffset: 1, yoffset: 0, width: 4, height: 4, |
| expectation: gl.INVALID_OPERATION, message: "xoffset is not a multiple of 4" }, |
| { xoffset: 0, yoffset: 1, width: 4, height: 4, |
| expectation: gl.INVALID_OPERATION, message: "yoffset is not a multiple of 4" }, |
| { xoffset: 12, yoffset: 12, width: 4, height: 4, |
| expectation: gl.NO_ERROR, message: "is valid" }, |
| ]); |
| |
| // Test TexImage validation on level dimensions combinations. |
| // When level equals 0, width and height must be a multiple of 4. |
| // When level is larger than 0, this constraint doesn't apply. |
| |
| let npotExpectation, npotMessage; |
| if (contextVersion >= 2) { |
| npotExpectation = gl.NO_ERROR; |
| npotMessage = "valid"; |
| } else { |
| npotExpectation = gl.INVALID_VALUE; |
| npotMessage = "invalid"; |
| } |
| |
| ctu.testTexImageLevelDimensions(gl, ext, validFormats, expectedByteLength, getBlockDimensions, |
| [ |
| { level: 0, width: 4, height: 3, |
| expectation: gl.INVALID_OPERATION, message: "level is 0, height is not a multiple of 4" }, |
| { level: 0, width: 3, height: 4, |
| expectation: gl.INVALID_OPERATION, message: "level is 0, width is not a multiple of 4" }, |
| { level: 0, width: 2, height: 2, |
| expectation: gl.INVALID_OPERATION, message: "level is 0, width is not a multiple of 4" }, |
| { level: 0, width: 4, height: 4, |
| expectation: gl.NO_ERROR, message: "is valid" }, |
| { level: 1, width: 1, height: 1, |
| expectation: gl.INVALID_OPERATION, message: "implied base mip 2x2 is invalid" }, |
| { level: 1, width: 1, height: 2, |
| expectation: gl.INVALID_OPERATION, message: "implied base mip 2x4 is invalid" }, |
| { level: 1, width: 2, height: 1, |
| expectation: gl.INVALID_OPERATION, message: "implied base mip 4x2 is invalid" }, |
| { level: 1, width: 2, height: 2, |
| expectation: gl.NO_ERROR, message: "implied base mip 4x4 is valid" }, |
| { level: 2, width: 1, height: 3, |
| expectation: npotExpectation, message: "implied base mip 4x12 is " + npotMessage }, |
| ]); |
| |
| // Test that RGTC enums are not accepted by texImage2D |
| if (contextVersion >= 2) { |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_RED_RGTC1_EXT, 4, 4, 0, gl.RED, gl.UNSIGNED_BYTE, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "COMPRESSED_RED_RGTC1_EXT fails with texImage2D"); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_SIGNED_RED_RGTC1_EXT, 4, 4, 0, gl.RED, gl.BYTE, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "COMPRESSED_SIGNED_RED_RGTC1_EXT fails with texImage2D"); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_RED_GREEN_RGTC2_EXT, 4, 4, 0, gl.RG, gl.UNSIGNED_BYTE, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "COMPRESSED_RED_GREEN_RGTC2_EXT fails with texImage2D"); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT, 4, 4, 0, gl.RG, gl.BYTE, null); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT fails with texImage2D"); |
| |
| gl.deleteTexture(tex); |
| } |
| }; |
| |
| function runTest() { |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| ctu.testCompressedFormatsUnavailableWhenExtensionDisabled(gl, validFormats, expectedByteLength, 4); |
| |
| ext = gl.getExtension("EXT_texture_compression_rgtc"); |
| |
| wtu.runExtensionSupportedTest(gl, "EXT_texture_compression_rgtc", ext !== null); |
| |
| if (ext !== null) { |
| runTestExtension(); |
| } |
| } |
| } |
| |
| runTest(); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| </body> |
| </html> |