Disable mipmapping for sRGB textures

On Android (GLES 3.2), calling glGenerateMipmap on a SRGB8 target results in completely black levels because SRGB8 is not a valid "renderable" texture.
See https://stackoverflow.com/a/43976056/2609654

Errors:

• commit 591e18c7 is not allowed since it moves the submodule ThirdParty/vtkm/vtkvtkm/vtk-m backwards from d60bcd253650a6d66551bf201d3d6a1301256ba4 to d2f0f3c99013c7fa9a0e8828c1d51bbcbb292dde.
• commit 591e18c7 is not allowed because the following files are not formatted according to the 'clang-format' check: Rendering/OpenGL2/vtkOpenGLTexture.cxx. Post a comment ending in the line Do: reformat to rewrite the MR source branch automatically.
• commit 591e18c7 references the commit d2f0f3c99013c7fa9a0e8828c1d51bbcbb292dde at ThirdParty/vtkm/vtkvtkm/vtk-m, but it is not available as a first-parent of the tracked branch release; please choose the commit where it was merged into the release branch.

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

Please rewrite commits to fix the errors listed above (adding fixup commits will not resolve the errors) and force-push the branch again to update the merge request.

@mwestphal

do: reformat

This topic has been reformatted and pushed; please fetch from the source repository and reset your local branch to continue with further development on the reformatted commits.

added 1 commit

• cd6ffa4c - Disable mipmapping for sRGB textures

Compare with previous version

Errors:

• commit cd6ffa4c is not allowed since it moves the submodule ThirdParty/vtkm/vtkvtkm/vtk-m backwards from d60bcd253650a6d66551bf201d3d6a1301256ba4 to d2f0f3c99013c7fa9a0e8828c1d51bbcbb292dde.
• commit cd6ffa4c references the commit d2f0f3c99013c7fa9a0e8828c1d51bbcbb292dde at ThirdParty/vtkm/vtkvtkm/vtk-m, but it is not available as a first-parent of the tracked branch release; please choose the commit where it was merged into the release branch.

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

Please rewrite commits to fix the errors listed above (adding fixup commits will not resolve the errors) and force-push the branch again to update the merge request.

added 1 commit

• 2d401fe0 - Disable mipmapping for sRGB textures

Compare with previous version

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

Do: test

@ken-martin ptal

+1 LGTM

Dashboard is unrelated, merging.

Do: merge

mentioned in commit bba40881

merged

mentioned in merge request !9268 (merged)