Cc: mesa-sta...@lists.freedesktop.org
---
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 59f512f..f4b0502 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -269,6 +269,26 @@ 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 fda2411..209769a 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);
--
2.5.0.400.gff86faf
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