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5 Commits

Author SHA1 Message Date
Emil Velikov d542d2fc13 util: consistently use ifndef guards over pragma once 
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Vedran Miletić <vedran@miletic.net>
Acked-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
 2017-03-22 16:55:22 +00:00
Kenneth Graunke 01e99cba04 mesa: Fix uf10_to_f32() scale factor in the E == 0 and M != 0 case. 
GL_EXT_packed_float, 2.1.B Unsigned 10-Bit Floating-Point Numbers:

        0.0,                      if E == 0 and M == 0,
        2^-14 * (M / 32),         if E == 0 and M != 0,
        2^(E-15) * (1 + M/32),    if 0 < E < 31,
        INF,                      if E == 31 and M == 0, or
        NaN,                      if E == 31 and M != 0,

In the second case (E == 0 and M != 0), we were multiplying the mantissa
by 2^-20, when we should have been multiplying by 2^-19 (which is
2^(-14 + -5), or 2^-14 * 2^-5, or 2^-14 / 32).

The previous section defines the formula for 11-bit numbers, which is:

        2^-14 * (M / 64),         if E == 0 and M != 0,

In other words, we had accidentally copy and pasted the 11-bit code
to the 10-bit case, and neglected to change the exponent.

Fixes dEQP-GLES3.functional.pbo.renderbuffer.r11f_g11f_b10f_triangles
when run with surface dimensions of 1536x1152 or 1920x1080.

Cc: mesa-stable@lists.freedesktop.org
References: https://code.google.com/p/chrome-os-partner/issues/detail?id=56244
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Stephane Marchesin <stephane.marchesin@gmail.com>
Reviewed-by: Antia Puentes <apuentes@igalia.com>
 2016-08-17 17:26:11 -07:00
Jason Ekstrand 21f357b66e util/r11g11b10f: Whitespace cleanups 
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
 2016-08-05 09:07:06 -07:00
Jason Ekstrand ffcf8e1049 util/format: Use explicitly sized types 
Both the rgb9e5 and r11g11b10 formats are defined based on how they are
packed into a 32-bit integer.  It makes sense that the functions that
manipulate them take an explicitly sized type.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
 2016-08-05 09:07:04 -07:00
Jason Ekstrand f29fd7897a util: Move format_r11g11b10f.h to src/util 
It's used from both mesa main and gallium.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
 2016-08-05 09:06:57 -07:00
Renamed from src/gallium/auxiliary/util/u_format_r11g11b10f.h (Browse further)