Add offset test to webgl-compressed-texture-astc #3750
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lexaknyazev
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Dec 11, 2025
sdk/tests/conformance/extensions/webgl-compressed-texture-astc.html
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| // ASTC block size is always 16 bytes (128 bits) | ||
| const offset = (width / blockSize.width + height / blockSize.height - 1) * 16; | ||
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| gl.compressedTexSubImage2D(target, 0, x, y, blitWidth, blitHeight, format, data, offset); |
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For completeness, please also test the length override parameter like
compressedTexSubImage2D(target, 0, x, y, blitWidth, blitHeight, format, data,
0, data.length - offset)| checkResult(target, [gl.NO_ERROR, gl.INVALID_ENUM, gl.INVALID_ENUM ], "2D", true); | ||
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| if (useES3) { | ||
| gl.compressedTexSubImage3D(target, 0, x, y, 0, blitWidth, blitHeight, 1, format, data, offset); |
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Using
compressedTexSubImage3Don a layered texture with a non-null y offset is currently raising anINVALID_VALUEon Meta Quest 2.This PR adds a test that ensures using an offset works as expected.
EDIT: Looks like the behavior is broken on a lot of Qualcomm chips. Test fails on Browserstack for Samsung Galaxy Z Fold / S25, as well as OnePlus phones