isl_format_has_sint_channel(fmt);
}
+bool isl_format_has_color_component(enum isl_format fmt,
+ int component) ATTRIBUTE_CONST;
+
unsigned isl_format_get_num_channels(enum isl_format fmt);
uint32_t isl_format_get_depth_format(enum isl_format fmt, bool has_stencil);
return isl_format_has_channel_type(fmt, ISL_SINT);
}
+bool
+isl_format_has_color_component(enum isl_format fmt, int component)
+{
+ const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
+ const uint8_t intensity = fmtl->channels.i.bits;
+ const uint8_t luminance = fmtl->channels.l.bits;
+
+ switch (component) {
+ case 0:
+ return (fmtl->channels.r.bits + intensity + luminance) > 0;
+ case 1:
+ return (fmtl->channels.g.bits + intensity + luminance) > 0;
+ case 2:
+ return (fmtl->channels.b.bits + intensity + luminance) > 0;
+ case 3:
+ return (fmtl->channels.a.bits + intensity) > 0;
+ default:
+ assert(!"Invalid color component: must be 0..3");
+ return false;
+ }
+}
+
unsigned
isl_format_get_num_channels(enum isl_format fmt)
{