From e1c098f2381de53bd0a3260d330b057c8bfb3156 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Thu, 22 Oct 2015 23:32:16 +0200 Subject: util/format: add helper util_format_is_snorm8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Michel Dänzer --- src/gallium/auxiliary/util/u_format.c | 19 +++++++++++++++++++ src/gallium/auxiliary/util/u_format.h | 3 +++ 2 files changed, 22 insertions(+) diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c index c1ce408119f..79630bf6dc3 100644 --- a/src/gallium/auxiliary/util/u_format.c +++ b/src/gallium/auxiliary/util/u_format.c @@ -169,6 +169,25 @@ util_format_is_snorm(enum pipe_format format) desc->channel[i].normalized; } +boolean +util_format_is_snorm8(enum pipe_format format) +{ + const struct util_format_description *desc = util_format_description(format); + int i; + + if (desc->is_mixed) + return FALSE; + + i = util_format_get_first_non_void_channel(format); + if (i == -1) + return FALSE; + + return desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED && + !desc->channel[i].pure_integer && + desc->channel[i].normalized && + desc->channel[i].size == 8; +} + boolean util_format_is_luminance_alpha(enum pipe_format format) { diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h index 42b39ff04fd..a1b1b28fa41 100644 --- a/src/gallium/auxiliary/util/u_format.h +++ b/src/gallium/auxiliary/util/u_format.h @@ -686,6 +686,9 @@ util_format_is_pure_uint(enum pipe_format format); boolean util_format_is_snorm(enum pipe_format format); +boolean +util_format_is_snorm8(enum pipe_format format); + /** * Check if the src format can be blitted to the destination format with * a simple memcpy. For example, blitting from RGBA to RGBx is OK, but not -- cgit v1.2.3