Mesa (master): compiler/spirv: implement 16-bit exp and log

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Module: Mesa
Branch: master
Commit: 88663ba67c3438d7bac003fc6060a602f5189c39
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=88663ba67c3438d7bac003fc6060a602f5189c39

Author: Iago Toral Quiroga <itoral at igalia.com>
Date:   Wed Apr 18 10:09:33 2018 +0200

compiler/spirv: implement 16-bit exp and log

v2
 - use nir_fmul_imm helper (Jason)

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

---

 src/compiler/spirv/vtn_glsl450.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/compiler/spirv/vtn_glsl450.c b/src/compiler/spirv/vtn_glsl450.c
index 7e813695a8..7984c7cc77 100644
--- a/src/compiler/spirv/vtn_glsl450.c
+++ b/src/compiler/spirv/vtn_glsl450.c
@@ -177,7 +177,7 @@ matrix_inverse(struct vtn_builder *b, struct vtn_ssa_value *src)
 static nir_ssa_def *
 build_exp(nir_builder *b, nir_ssa_def *x)
 {
-   return nir_fexp2(b, nir_fmul(b, x, nir_imm_float(b, M_LOG2E)));
+   return nir_fexp2(b, nir_fmul_imm(b, x, M_LOG2E));
 }
 
 /**
@@ -186,7 +186,7 @@ build_exp(nir_builder *b, nir_ssa_def *x)
 static nir_ssa_def *
 build_log(nir_builder *b, nir_ssa_def *x)
 {
-   return nir_fmul(b, nir_flog2(b, x), nir_imm_float(b, 1.0 / M_LOG2E));
+   return nir_fmul_imm(b, nir_flog2(b, x), 1.0 / M_LOG2E);
 }
 
 /**