tree fe1b47952ff4d661f56953c551743c1b211dae25
parent 457bd9b1ca3d3f36e12e6c2eb47ee8f753c38de1
author Alexis Hetu <sugoi@google.com> 1545332449 -0500
committer Alexis Hétu <sugoi@google.com> 1545425928 +0000

Added support for half float in the Blitter

Implemented Float <-> Half conversion. The conversion is copied from
Half.cpp and is the same as the C++ code, converted to Reactor code.
The conversion is NOT optimized. Optimizing this code path will be
done later, this cl only cares about correctness.

Passes all conversion tests to and from half float in the following
patterns:

[dEQP-VK.api.copy_and_blit.core.blit_image]
.all_formats.color.[supported format].r16_sfloat.*
.all_formats.color.[supported format].r16g16_sfloat.*
.all_formats.color.[supported format].r16g16b16a16_sfloat.*
.all_formats.color.r16_sfloat.*
.all_formats.color.r16g16_sfloat.*
.all_formats.color.r16g16b16a16_sfloat.*

Bug b/119620767

Change-Id: Icd725dcd2ddd8c54e6657a2c3210da270210a149
Reviewed-on: https://swiftshader-review.googlesource.com/c/23329
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>