nvk: Support depth clip

Signed-off-by: Yusuf Khan <yusisamerican@gmail.com>

src/nouveau/vulkan/nvk_graphics_pipeline.c

@@ -31,11 +31,12 @@ static void
 emit_pipeline_rs_state(struct nv_push *p,
                        const struct vk_rasterization_state *rs)
 {
-   /* TODO: Depth clip? */
+   unsigned clip_clamp_enable = rs->depth_clamp_enable | rs->depth_clip_enable;
+
    P_IMMD(p, NV9097, SET_VIEWPORT_CLIP_CONTROL, {
       .min_z_zero_max_z_one      = MIN_Z_ZERO_MAX_Z_ONE_TRUE,
-      .pixel_min_z               = rs->depth_clamp_enable ? PIXEL_MIN_Z_CLAMP : PIXEL_MIN_Z_CLIP,
-      .pixel_max_z               = rs->depth_clamp_enable ? PIXEL_MAX_Z_CLAMP : PIXEL_MAX_Z_CLIP,
+      .pixel_min_z               = clip_clamp_enable ? PIXEL_MIN_Z_CLAMP : PIXEL_MIN_Z_CLIP,
+      .pixel_max_z               = clip_clamp_enable ? PIXEL_MAX_Z_CLAMP : PIXEL_MAX_Z_CLIP,
       .geometry_guardband        = GEOMETRY_GUARDBAND_SCALE_256,
       .line_point_cull_guardband = LINE_POINT_CULL_GUARDBAND_SCALE_256,
       .geometry_clip             = GEOMETRY_CLIP_WZERO_CLIP,

src/nouveau/vulkan/nvk_physical_device.c

@@ -178,6 +178,11 @@ nvk_GetPhysicalDeviceFeatures2(VkPhysicalDevice physicalDevice,
          f->vertexInputDynamicState = true;
          break;
       }
+      case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DEPTH_CLIP_ENABLE_FEATURES_EXT: {
+         VkPhysicalDeviceDepthClipEnableFeaturesEXT *f = (void *)ext;
+         f->depthClipEnable = true;
+         break;
+      }
       /* More feature structs */
       default:
          break;
@@ -403,6 +408,7 @@ nvk_get_device_extensions(const struct nvk_physical_device *pdev,
       .EXT_private_data = true,
       .EXT_sample_locations = pdev->info.cls_eng3d >= MAXWELL_B,
       .EXT_vertex_input_dynamic_state = true,
+      .EXT_depth_clip_enable = true,
    };
 }