diff --git a/libs/vkd3d-shader/glsl.c b/libs/vkd3d-shader/glsl.c
index 5a4ac4d75..15c049060 100644
--- a/libs/vkd3d-shader/glsl.c
+++ b/libs/vkd3d-shader/glsl.c
@@ -1500,6 +1500,12 @@ static void vkd3d_glsl_handle_instruction(struct vkd3d_glsl_generator *gen,
         case VSIR_OP_DP4:
             shader_glsl_dot(gen, ins, VKD3DSP_WRITEMASK_ALL);
             break;
+        case VSIR_OP_DSX:
+            shader_glsl_intrinsic(gen, ins, "dFdx");
+            break;
+        case VSIR_OP_DSY:
+            shader_glsl_intrinsic(gen, ins, "dFdy");
+            break;
         case VSIR_OP_ELSE:
             shader_glsl_else(gen, ins);
             break;
diff --git a/tests/hlsl/ddxddy.shader_test b/tests/hlsl/ddxddy.shader_test
index 0a057cf56..d9ea3af4c 100644
--- a/tests/hlsl/ddxddy.shader_test
+++ b/tests/hlsl/ddxddy.shader_test
@@ -8,7 +8,7 @@ float4 main(float4 pos : sv_position) : sv_target
 }
 
 [test]
-todo(sm<4 | glsl) draw quad
+todo(sm<4) draw quad
 probe (0, 0, 640, 480) rgba (1.0, 1.0, 0.0, 0.0)
 
 
@@ -29,7 +29,7 @@ float4 main(float4 pos : sv_position) : sv_target
 }
 
 [test]
-todo(sm<4 | glsl) draw quad
+todo(sm<4) draw quad
 todo(sm<4) probe (10, 10) rgba (-16.0, -5.0, 3.0, 0.0)
 todo(sm<4) probe (11, 10) rgba (-21.0, -5.0, 3.0, 0.0)
 todo(sm<4) probe (10, 11) rgba (-13.0, -5.0, 3.0, 0.0)
diff --git a/tests/hlsl/fwidth.shader_test b/tests/hlsl/fwidth.shader_test
index 3ba116a57..99fb1421d 100644
--- a/tests/hlsl/fwidth.shader_test
+++ b/tests/hlsl/fwidth.shader_test
@@ -18,7 +18,7 @@ float4 main(float4 pos : sv_position) : sv_target
 }
 
 [test]
-todo(sm<4 | glsl) draw quad
+todo(sm<4) draw quad
 probe (10, 10) rgba (8.0, 8.0, 8.0, 8.0)
 probe (11, 10) rgba (8.0, 8.0, 8.0, 8.0)
 probe (12, 10) rgba (10.0, 10.0, 10.0, 10.0)