Nikolay Sivov : vkd3d-shader/hlsl: Support exp2() intrinsic.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 8ca2f65bc16af3bd2428dbaf81d1d3a0bf4e9c6e
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/8ca2f65bc16af3bd2428dbaf81d1d3...

Author: Nikolay Sivov 
Date:   Wed Jan 25 19:36:13 2023 +0300

vkd3d-shader/hlsl: Support exp2() intrinsic.

---

libs/vkd3d-shader/hlsl.y | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index bca49ee6..3eee09ae 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -2491,6 +2491,17 @@ static bool intrinsic_dot(struct hlsl_ctx *ctx,
     return !!add_binary_dot_expr(ctx, params->instrs, params->args[0], params->args[1], loc);
 }

+static bool intrinsic_exp2(struct hlsl_ctx *ctx,
+        const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
+{
+    struct hlsl_ir_node *arg;
+
+    if (!(arg = intrinsic_float_convert_arg(ctx, params, params->args[0], loc)))
+        return false;
+
+    return !!add_unary_arithmetic_expr(ctx, params->instrs, HLSL_OP1_EXP2, arg, loc);
+}
+
 static bool intrinsic_floor(struct hlsl_ctx *ctx,
         const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
 {
@@ -2932,6 +2943,7 @@ intrinsic_functions[] =
     {"cos",                                 1, true,  intrinsic_cos},
     {"cross",                               2, true,  intrinsic_cross},
     {"dot",                                 2, true,  intrinsic_dot},
+    {"exp2",                                1, true,  intrinsic_exp2},
     {"floor",                               1, true,  intrinsic_floor},
     {"frac",                                1, true,  intrinsic_frac},
     {"ldexp",                               2, true,  intrinsic_ldexp},