diff --git a/Makefile.am b/Makefile.am
index 8364aaa3..2821ddc6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -98,6 +98,7 @@ vkd3d_shader_tests = \
 	tests/hlsl/gather-offset.shader_test \
 	tests/hlsl/gather.shader_test \
 	tests/hlsl/getdimensions.shader_test \
+	tests/hlsl/half.shader_test \
 	tests/hlsl/initializer-flatten.shader_test \
 	tests/hlsl/initializer-implicit-array.shader_test \
 	tests/hlsl/initializer-invalid-arg-count.shader_test \
diff --git a/tests/hlsl/asfloat.shader_test b/tests/hlsl/asfloat.shader_test
index 00238164..d2c0f9aa 100644
--- a/tests/hlsl/asfloat.shader_test
+++ b/tests/hlsl/asfloat.shader_test
@@ -5,7 +5,7 @@ shader model >= 4.0
 uniform float f;
 uniform int i;
 uniform uint u;
-uniform half h;
+uniform float h;
 
 float4 main() : sv_target
 {
@@ -14,7 +14,7 @@ float4 main() : sv_target
     ret.x = asfloat(f);
     ret.y = asfloat(i);
     ret.z = asfloat(u);
-    ret.w = asfloat(h);
+    ret.w = asfloat((half)h);
     return ret;
 }
 
diff --git a/tests/hlsl/asuint.shader_test b/tests/hlsl/asuint.shader_test
index 494229e7..0a2e39e5 100644
--- a/tests/hlsl/asuint.shader_test
+++ b/tests/hlsl/asuint.shader_test
@@ -5,7 +5,7 @@ shader model >= 4.0
 uniform float f;
 uniform int i;
 uniform uint u;
-uniform half h;
+uniform float h;
 
 float4 main() : sv_target
 {
@@ -14,7 +14,7 @@ float4 main() : sv_target
     ret.x = asuint(f);
     ret.y = asuint(i);
     ret.z = asuint(u);
-    ret.w = asuint(h);
+    ret.w = asuint((half)h);
     return ret;
 }
 
diff --git a/tests/hlsl/cast-to-float.shader_test b/tests/hlsl/cast-to-float.shader_test
index 69786ecc..7c32acfa 100644
--- a/tests/hlsl/cast-to-float.shader_test
+++ b/tests/hlsl/cast-to-float.shader_test
@@ -5,11 +5,11 @@ shader model >= 4.0
 uniform int i;
 uniform uint u;
 uniform bool b;
-uniform half h;
+uniform float h;
 
 float4 main() : sv_target
 {
-    return float4(((float)i) + 1.5, ((float)u) - 2.5, ((float)b) / 2, h);
+    return float4(((float)i) + 1.5, ((float)u) - 2.5, ((float)b) / 2, (half)h);
 }
 
 [test]
diff --git a/tests/hlsl/cast-to-int.shader_test b/tests/hlsl/cast-to-int.shader_test
index efa60eed..ae566a03 100644
--- a/tests/hlsl/cast-to-int.shader_test
+++ b/tests/hlsl/cast-to-int.shader_test
@@ -5,7 +5,7 @@ shader model >= 4.0
 uniform float f;
 uniform uint u;
 uniform bool b;
-uniform half h;
+uniform float h;
 
 float4 main() : sv_target
 {
@@ -14,7 +14,7 @@ float4 main() : sv_target
     ret.x = ((float)(int)f) - 1.5;
     ret.y = ((float)(int)u) + 2.5;
     ret.z = ((float)(int)b) / 2;
-    ret.w = ((float)(int)h) + 3.5;
+    ret.w = ((float)(int)(half)h) + 3.5;
     return ret;
 }
 
diff --git a/tests/hlsl/cast-to-uint.shader_test b/tests/hlsl/cast-to-uint.shader_test
index 66853855..dece99b7 100644
--- a/tests/hlsl/cast-to-uint.shader_test
+++ b/tests/hlsl/cast-to-uint.shader_test
@@ -5,7 +5,7 @@ shader model >= 4.0
 uniform float f;
 uniform int i;
 uniform bool b;
-uniform half h;
+uniform float h;
 
 float4 main() : sv_target
 {
@@ -14,7 +14,7 @@ float4 main() : sv_target
     ret.x = ((float)(uint)f) - 1.5;
     ret.y = ((float)(uint)i) - 1.5;
     ret.z = ((float)(uint)b) / 2;
-    ret.w = ((float)(uint)h) + 0.5;
+    ret.w = ((float)(uint)(half)h) + 0.5;
     return ret;
 }
 
diff --git a/tests/hlsl/half.shader_test b/tests/hlsl/half.shader_test
new file mode 100644
index 00000000..95610235
--- /dev/null
+++ b/tests/hlsl/half.shader_test
@@ -0,0 +1,23 @@
+[pixel shader fail(sm<6) todo]
+uniform half h;
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+[require]
+options: backcompat
+
+[pixel shader]
+uniform half h;
+
+float4 main() : sv_target
+{
+    return h;
+}
+
+[test]
+uniform 0 float 10.0
+todo(sm>=6) draw quad
+probe all rgba (10.0, 10.0, 10.0, 10.0)