vc4: Add support for sampling from sRGB.

Graphics / Mesa 3D Graphics Library / Mesa - Eric Anholt [anholt.net] - 2 October 2014 20:28 UTC

This isn't perfect -- the filtering is happening on the srgb values, and we're decoding afterwards, which is not what you want. I think that's the cause of some additional texwrap(GL_CLAMP, LINEAR) failures, though many other texwrap tests on srgb start to pass since unfiltered values come out correct.

24d9980 vc4: Add support for sampling from sRGB.
src/gallium/drivers/vc4/vc4_program.c | 52 +++++++++++++++++++++++++++------
src/gallium/drivers/vc4/vc4_qir.h | 8 +++++
2 files changed, 51 insertions(+), 9 deletions(-)

Upstream: cgit.freedesktop.org

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