diff --git a/libs/vkd3d-shader/glsl.c b/libs/vkd3d-shader/glsl.c
index 634ec24a..ec52e2d1 100644
--- a/libs/vkd3d-shader/glsl.c
+++ b/libs/vkd3d-shader/glsl.c
@@ -137,6 +137,14 @@ static void shader_glsl_print_register_name(struct vkd3d_string_buffer *buffer,
             vkd3d_string_buffer_printf(buffer, "%s_out[%u]", gen->prefix, reg->idx[0].offset);
             break;
 
+        case VKD3DSPR_DEPTHOUT:
+            if (gen->program->shader_version.type != VKD3D_SHADER_TYPE_PIXEL)
+                vkd3d_glsl_compiler_error(gen, VKD3D_SHADER_ERROR_GLSL_INTERNAL,
+                        "Internal compiler error: Unhandled depth output in shader type #%x.",
+                        gen->program->shader_version.type);
+            vkd3d_string_buffer_printf(buffer, "gl_FragDepth");
+            break;
+
         case VKD3DSPR_IMMCONST:
             switch (reg->dimension)
             {
diff --git a/tests/hlsl/depth-out.shader_test b/tests/hlsl/depth-out.shader_test
index 7841f735..9f99ff78 100644
--- a/tests/hlsl/depth-out.shader_test
+++ b/tests/hlsl/depth-out.shader_test
@@ -16,22 +16,22 @@ float main() : SV_Depth
 uniform 0 float 0.0
 clear dsv 1.0
 depth less
-todo(glsl) draw quad
+draw quad
 probe dsv (0,0) r (0.0)
 
 uniform 0 float 0.75
 clear dsv 1.0
-todo(glsl) draw quad
+draw quad
 probe dsv (0,0) r (0.75)
 
 clear dsv 0.5
 depth greater
-todo(glsl) draw quad
+draw quad
 probe dsv (0,0) r (0.75)
 
 depth less
 clear dsv 0.5
-todo(glsl) draw quad
+draw quad
 probe dsv (0,0) r (0.5)