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intel/isl: Add a helper for determining if a color is 0/1 

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Jason Ekstrand 2017-07-17 19:48:22 -07:00
parent b26b2490e5
commit d4de403f91
2 changed files with 30 additions and 0 deletions
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27
src/intel/isl/isl.c
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@ -268,6 +268,33 @@ 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
*/

3
src/intel/isl/isl.h
View File

@ -1637,6 +1637,9 @@ 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__ });