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vc4: Add a little helper for clamping to [0,1].

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This commit is contained in:
Eric Anholt 2015-01-11 15:22:22 +13:00
parent 1a328120d3
commit 1519a1928a
1 changed files with 10 additions and 4 deletions
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14
src/gallium/drivers/vc4/vc4_program.c
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@ -315,6 +315,14 @@ get_swizzled_channel(struct vc4_compile *c,
}
}
static inline struct qreg
qir_SAT(struct vc4_compile *c, struct qreg val)
{
return qir_FMAX(c,
qir_FMIN(c, val, qir_uniform_f(c, 1.0)),
qir_uniform_f(c, 0.0));
}
static struct qreg
tgsi_to_qir_alu(struct vc4_compile *c,
struct tgsi_full_instruction *tgsi_inst,
@ -686,13 +694,11 @@ tgsi_to_qir_tex(struct vc4_compile *c,
}
if (c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP) {
s = qir_FMIN(c, qir_FMAX(c, s, qir_uniform_f(c, 0.0)),
qir_uniform_f(c, 1.0));
s = qir_SAT(c, s);
}
if (c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP) {
t = qir_FMIN(c, qir_FMAX(c, t, qir_uniform_f(c, 0.0)),
qir_uniform_f(c, 1.0));
t = qir_SAT(c, t);
}
qir_TEX_T(c, t, texture_u[next_texture_u++]);