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Diffstat (limited to 'src/glsl/nir/nir.h')
| -rw-r--r-- | src/glsl/nir/nir.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h index 3c908b9f295..255d45585db 100644 --- a/src/glsl/nir/nir.h +++ b/src/glsl/nir/nir.h @@ -1850,6 +1850,24 @@ typedef struct nir_lower_tex_options { * texture dims to normalize. */ bool lower_rect; + + /** + * To emulate certain texture wrap modes, this can be used + * to saturate the specified tex coord to [0.0, 1.0]. The + * bits are according to sampler #, ie. if, for example: + * + * (conf->saturate_s & (1 << n)) + * + * is true, then the s coord for sampler n is saturated. + * + * Note that clamping must happen *after* projector lowering + * so any projected texture sample instruction with a clamped + * coordinate gets automatically lowered, regardless of the + * 'lower_txp' setting. + */ + unsigned saturate_s; + unsigned saturate_t; + unsigned saturate_r; } nir_lower_tex_options; void nir_lower_tex(nir_shader *shader, |