Petrichor Park : vkd3d-shader/hlsl: Implement the rcp() intrinisic.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: b3f0cd5788fa13093f69228cf6955a0f9d733f74
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/b3f0cd5788fa13093f69228cf6955a...

Author: Petrichor Park <ppark(a)codeweavers.com>
Date:   Mon Apr 29 12:46:15 2024 -0500

vkd3d-shader/hlsl: Implement the rcp() intrinisic.

SM1 already has the RCP opcode implemented; SM4 implementation is in the
next commit.

---

 libs/vkd3d-shader/hlsl.y   | 12 ++++++++++++
 tests/hlsl/rcp.shader_test | 26 +++++++++++++-------------
 2 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index 7b058a65..56736a65 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -4065,6 +4065,17 @@ static bool intrinsic_radians(struct hlsl_ctx *ctx,
     return !!add_binary_arithmetic_expr(ctx, params->instrs, HLSL_OP2_MUL, arg, rad, loc);
 }
 
+static bool intrinsic_rcp(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_RCP, arg, loc);
+}
+
 static bool intrinsic_reflect(struct hlsl_ctx *ctx,
         const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
 {
@@ -4760,6 +4771,7 @@ intrinsic_functions[] =
     {"normalize",                           1, true,  intrinsic_normalize},
     {"pow",                                 2, true,  intrinsic_pow},
     {"radians",                             1, true,  intrinsic_radians},
+    {"rcp",                                 1, true,  intrinsic_rcp},
     {"reflect",                             2, true,  intrinsic_reflect},
     {"refract",                             3, true,  intrinsic_refract},
     {"round",                               1, true,  intrinsic_round},
diff --git a/tests/hlsl/rcp.shader_test b/tests/hlsl/rcp.shader_test
index dcfeb924..65cf1a81 100644
--- a/tests/hlsl/rcp.shader_test
+++ b/tests/hlsl/rcp.shader_test
@@ -1,4 +1,4 @@
-[pixel shader todo]
+[pixel shader todo(sm>=4)]
 uniform float4 f;
 
 float4 main() : sv_target
@@ -8,28 +8,28 @@ float4 main() : sv_target
 
 [test]
 uniform 0 float4 1.0 2.0 3.0 4.0
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (1.0, 0.5, 0.3333333, 0.25) 8
 
 uniform 0 float4 -1.0 -2.0 -3.0 -4.0
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (-1.0, -0.5, -0.3333333, -0.25) 8
 
 uniform 0 float4 12.34 56.78 -90.12 -34.56
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (0.081037275, 0.017611835, -0.011096316, -0.028935184) 8
 
 uniform 0 float4 0.25 0.125 0.0625 0.3333333
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (4.0, 8.0, 16.0, 3.0) 8
 
 % Degenerate cases
 uniform 0 float4 0.0 -0.0 1.0e39 -1.0e39
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (1.0e39, -1.0e39, 0.0, -0.0) 8
 
 
-[pixel shader todo]
+[pixel shader todo(sm>=4)]
 % Check invertibility
 uniform float4 f;
 
@@ -40,19 +40,19 @@ float4 main() : sv_target
 
 [test]
 uniform 0 float4 1.0 2.0 3.0 4.0
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (1.0, 2.0, 3.0, 4.0) 8
 
 uniform 0 float4 7.604 3.1415 2.72 9.876
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (7.604, 3.1415, 2.72, 9.876) 8
 
 uniform 0 float4 0.0 -0.0 1.0e39 -1.0e39
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (0.0, -0.0, 1.0e39, -1.0e39)
 
 
-[pixel shader todo]
+[pixel shader todo(sm>=4)]
 % Make sure swizzling works
 uniform float4 f;
 
@@ -68,9 +68,9 @@ float4 main() : sv_target
 
 [test]
 uniform 0 float4 1.0 2.0 3.0 4.0
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (1.0, 0.5, 0.3333333, 0.25) 8
 
 uniform 0 float4 -1.0 -2.0 -3.0 -4.0
-todo(sm<6) draw quad
+todo(sm>=4 & sm<6) draw quad
 probe (0, 0) rgba (-1.0, -0.5, -0.3333333, -0.25) 8