From 4796025ba518baa0e8893337591a3f452a375d94 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Mon, 12 Feb 2018 15:50:12 -0800 Subject: [PATCH] intel/isl: Add an isl_color_value_is_zero helper Cc: mesa-stable@lists.freedesktop.org Reviewed-by: Nanley Chery --- src/intel/isl/isl.c | 20 ++++++++++++++++++++ src/intel/isl/isl.h | 3 +++ 2 files changed, 23 insertions(+) diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c index 4dce0596d23..1a32c028183 100644 --- a/src/intel/isl/isl.c +++ b/src/intel/isl/isl.c @@ -268,6 +268,26 @@ isl_tiling_get_info(enum isl_tiling tiling, }; } +bool +isl_color_value_is_zero(union isl_color_value value, + enum isl_format format) +{ + const struct isl_format_layout *fmtl = isl_format_get_layout(format); + +#define RETURN_FALSE_IF_NOT_0(c, i) \ + if (fmtl->channels.c.bits && value.u32[i] != 0) \ + return false + + RETURN_FALSE_IF_NOT_0(r, 0); + RETURN_FALSE_IF_NOT_0(g, 1); + RETURN_FALSE_IF_NOT_0(b, 2); + RETURN_FALSE_IF_NOT_0(a, 3); + +#undef RETURN_FALSE_IF_NOT_0 + + return true; +} + bool isl_color_value_is_zero_one(union isl_color_value value, enum isl_format format) diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h index fda24115101..209769a9a99 100644 --- a/src/intel/isl/isl.h +++ b/src/intel/isl/isl.h @@ -1692,6 +1692,9 @@ isl_extent4d(uint32_t width, uint32_t height, uint32_t depth, return e; } +bool isl_color_value_is_zero(union isl_color_value value, + enum isl_format format); + bool isl_color_value_is_zero_one(union isl_color_value value, enum isl_format format); -- 2.30.2