[Mesa-dev] [PATCH 1/2] spirv: Add a 64-bit implementation of OpIsInf

[Neil Roberts]

The only change neccessary is to change the type of the constant used
to compare against.

This has been tested against the arb_gpu_shader_fp64/execution/
fs-isinf-dvec tests using the ARB_gl_spirv branch.
---
 src/compiler/spirv/vtn_alu.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/compiler/spirv/vtn_alu.c b/src/compiler/spirv/vtn_alu.c
index d0c9e316935..2b03a2e4d09 100644
--- a/src/compiler/spirv/vtn_alu.c
+++ b/src/compiler/spirv/vtn_alu.c
@@ -529,10 +529,15 @@ vtn_handle_alu(struct vtn_builder *b, SpvOp opcode,
       val->ssa->def = nir_fne(&b->nb, src[0], src[0]);
       break;
 
-   case SpvOpIsInf:
-      val->ssa->def = nir_ieq(&b->nb, nir_fabs(&b->nb, src[0]),
-                                      nir_imm_float(&b->nb, INFINITY));
+   case SpvOpIsInf: {
+      nir_ssa_def *inf;
+      if (src[0]->bit_size == 64)
+         inf = nir_imm_double(&b->nb, INFINITY);
+      else
+         inf = nir_imm_float(&b->nb, INFINITY);
+      val->ssa->def = nir_ieq(&b->nb, nir_fabs(&b->nb, src[0]), inf);
       break;
+   }
 
    case SpvOpFUnordEqual:
    case SpvOpFUnordNotEqual:
-- 
2.14.3