Zebediah Figura : vkd3d-shader/hlsl: Parse the abs() intrinsic.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: c5e50ae658a9befb76c0c055973ebfb7a80eba89
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=c5e50ae658a9befb76c0c055973ebfb7a80eba89

Author: Zebediah Figura <zfigura at codeweavers.com>
Date:   Fri Sep 17 16:06:37 2021 -0500

vkd3d-shader/hlsl: Parse the abs() intrinsic.

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Giovanni Mascellani <gmascellani at codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 Makefile.am              |  2 ++
 libs/vkd3d-shader/hlsl.y |  9 +++++++++
 tests/abs.shader_test    | 13 +++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index c9ad388..3287ec7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -54,6 +54,7 @@ vkd3d_shader_runners = \
 	tests/shader_runner_d3d12
 
 vkd3d_shader_tests = \
+	tests/abs.shader_test \
 	tests/cast-to-float.shader_test \
 	tests/cast-to-half.shader_test \
 	tests/cast-to-int.shader_test \
@@ -273,6 +274,7 @@ tests_vkd3d_api_LDADD = libvkd3d.la @VULKAN_LIBS@
 tests_vkd3d_shader_api_LDADD = libvkd3d-shader.la
 SHADER_TEST_LOG_COMPILER = tests/shader_runner_d3d12
 XFAIL_TESTS = \
+	tests/abs.shader_test \
 	tests/cast-to-float.shader_test \
 	tests/cast-to-half.shader_test \
 	tests/cast-to-int.shader_test \
diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index fe3c328..bd26603 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -1555,6 +1555,14 @@ static const struct hlsl_ir_function_decl *find_function_call(struct hlsl_ctx *c
     return args.decl;
 }
 
+static bool intrinsic_abs(struct hlsl_ctx *ctx,
+        const struct parse_initializer *params, struct vkd3d_shader_location loc)
+{
+    struct hlsl_ir_node *args[3] = {params->args[0]};
+
+    return !!add_expr(ctx, params->instrs, HLSL_OP1_ABS, args, &loc);
+}
+
 static bool intrinsic_clamp(struct hlsl_ctx *ctx,
         const struct parse_initializer *params, struct vkd3d_shader_location loc)
 {
@@ -1594,6 +1602,7 @@ static const struct intrinsic_function
 }
 intrinsic_functions[] =
 {
+    {"abs",                                 1, true,  intrinsic_abs},
     {"clamp",                               3, true,  intrinsic_clamp},
     {"max",                                 2, true,  intrinsic_max},
     {"saturate",                            1, true,  intrinsic_saturate},
diff --git a/tests/abs.shader_test b/tests/abs.shader_test
new file mode 100644
index 0000000..6fa6d1c
--- /dev/null
+++ b/tests/abs.shader_test
@@ -0,0 +1,13 @@
+[pixel shader]
+float4 main(uniform float2 u) : sv_target
+{
+    return float4(abs(u), abs(u.x - 0.5), abs(-0.4));
+}
+
+[test]
+uniform 0 float4 0.1 0.7 0.0 0.0
+draw quad
+probe all rgba (0.1, 0.7, 0.4, 0.4)
+uniform 0 float4 -0.7 0.1 0.0 0.0
+draw quad
+probe all rgba (0.7, 0.1, 1.2, 0.4)