---
src/intel/isl/isl.c | 27 +++++++++++++++++++++++++++
src/intel/isl/isl.h | 3 +++
2 files changed, 30 insertions(+)
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index 12ffe3b..2976e32 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -259,6 +259,33 @@ isl_tiling_get_info(enum isl_tiling tiling,
};
}
+bool
+isl_color_value_is_zero_one(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_1(c, i, field) \
+ if (fmtl->channels.c.bits && value.field[i] != 0 && value.field[i] != 1) \
+ return false
+
+ if (isl_format_has_int_channel(format)) {
+ RETURN_FALSE_IF_NOT_0_1(r, 0, u32);
+ RETURN_FALSE_IF_NOT_0_1(g, 1, u32);
+ RETURN_FALSE_IF_NOT_0_1(b, 2, u32);
+ RETURN_FALSE_IF_NOT_0_1(a, 3, u32);
+ } else {
+ RETURN_FALSE_IF_NOT_0_1(r, 0, f32);
+ RETURN_FALSE_IF_NOT_0_1(g, 1, f32);
+ RETURN_FALSE_IF_NOT_0_1(b, 2, f32);
+ RETURN_FALSE_IF_NOT_0_1(a, 3, f32);
+ }
+
+#undef RETURN_FALSE_IF_NOT_0_1
+
+ return true;
+}
+
/**
* @param[out] tiling is set only on success
*/
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index bc68e58..b2f5d39 100644
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -1630,6 +1630,9 @@ isl_extent4d(uint32_t width, uint32_t height, uint32_t
depth,
return e;
}
+bool isl_color_value_is_zero_one(union isl_color_value value,
+ enum isl_format format);
+
#define isl_surf_init(dev, surf, ...) \
isl_surf_init_s((dev), (surf), \
&(struct isl_surf_init_info) { __VA_ARGS__ });
--
2.5.0.400.gff86faf
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