Commit ced87057f0f1dd8ba8853899d5650510ca6b6b07
2016-04-04T16:34:27
Fix integer texture sampling with explicit gradients The lod level should be selected according to the explicit gradients, and the gradients are relative to the normalized texture coordinates, so they need to be multiplied by the base level dimensions to get the correct gradients to use in the lod level formula. In the case of sampling integer cube maps, the derivatives of the texture coordinates on the cube map face need to be calculated based on the derivatives of the cube map direction vector components. Also includes fix for sampling integer cube maps with explicit LOD. BUG=angleproject:1092 TEST=dEQP-GLES3.functional.shaders.texture_functions.*grad* Change-Id: Iadd358e713fa9695e755e98db8f368e8c512ac45 Reviewed-on: https://chromium-review.googlesource.com/337100 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>