lavapipe: implement VK_EXT_depth_clip_enable

v2: fix pipeline creation, need a deep copy for rasterization state now

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12260>

src/gallium/frontends/lavapipe/lvp_device.c

@@ -129,6 +129,7 @@ static const struct vk_device_extension_table lvp_device_extensions_supported =
    .EXT_calibrated_timestamps             = true,
    .EXT_color_write_enable                = true,
    .EXT_conditional_rendering             = true,
+   .EXT_depth_clip_enable                 = true,
    .EXT_extended_dynamic_state            = true,
    .EXT_extended_dynamic_state2           = true,
    .EXT_external_memory_host              = true,
@@ -668,6 +669,15 @@ VKAPI_ATTR void VKAPI_CALL lvp_GetPhysicalDeviceFeatures2(
          features->multiDraw = true;
          break;
       }
+      case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DEPTH_CLIP_ENABLE_FEATURES_EXT: {
+         VkPhysicalDeviceDepthClipEnableFeaturesEXT *features =
+            (VkPhysicalDeviceDepthClipEnableFeaturesEXT *)ext;
+         if (pdevice->pscreen->get_param(pdevice->pscreen, PIPE_CAP_DEPTH_CLAMP_ENABLE) != 0)
+            features->depthClipEnable = true;
+         else
+            features->depthClipEnable = false;
+         break;
+      }
       case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTENDED_DYNAMIC_STATE_2_FEATURES_EXT: {
          VkPhysicalDeviceExtendedDynamicState2FeaturesEXT *features = (VkPhysicalDeviceExtendedDynamicState2FeaturesEXT *)ext;
          features->extendedDynamicState2 = true;

src/gallium/frontends/lavapipe/lvp_execute.c

@@ -526,7 +526,14 @@ static void handle_graphics_pipeline(struct vk_cmd_queue_entry *cmd,
    /* rasterization state */
    if (pipeline->graphics_create_info.pRasterizationState) {
       const VkPipelineRasterizationStateCreateInfo *rsc = pipeline->graphics_create_info.pRasterizationState;
-      state->rs_state.depth_clip_near = state->rs_state.depth_clip_far = !rsc->depthClampEnable;
+      const VkPipelineRasterizationDepthClipStateCreateInfoEXT *depth_clip_state =
+         vk_find_struct_const(rsc->pNext, PIPELINE_RASTERIZATION_DEPTH_CLIP_STATE_CREATE_INFO_EXT);
+      state->rs_state.depth_clamp = rsc->depthClampEnable;
+      if (!depth_clip_state)
+         state->rs_state.depth_clip_near = state->rs_state.depth_clip_far = !rsc->depthClampEnable;
+      else
+         state->rs_state.depth_clip_near = state->rs_state.depth_clip_far = depth_clip_state->depthClipEnable;
+
       if (!dynamic_states[conv_dynamic_state_idx(VK_DYNAMIC_STATE_RASTERIZER_DISCARD_ENABLE_EXT)])
          state->rs_state.rasterizer_discard = rsc->rasterizerDiscardEnable;
 

src/gallium/frontends/lavapipe/lvp_pipeline.c

@@ -127,7 +127,7 @@ deep_copy_vertex_input_state(void *mem_ctx,
       vk_foreach_struct(ext, src->pNext) {
          switch (ext->sType) {
          case VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_DIVISOR_STATE_CREATE_INFO_EXT: {
-            VkPipelineVertexInputDivisorStateCreateInfoEXT *ext_src = (VkPipelineVertexInputDivisorStateCreateInfoEXT *)ext;;
+            VkPipelineVertexInputDivisorStateCreateInfoEXT *ext_src = (VkPipelineVertexInputDivisorStateCreateInfoEXT *)ext;
             VkPipelineVertexInputDivisorStateCreateInfoEXT *ext_dst = ralloc(mem_ctx, VkPipelineVertexInputDivisorStateCreateInfoEXT);
 
             ext_dst->sType = ext_src->sType;
@@ -239,6 +239,35 @@ deep_copy_dynamic_state(void *mem_ctx,
    return VK_SUCCESS;
 }
 
+
+static VkResult
+deep_copy_rasterization_state(void *mem_ctx,
+                              VkPipelineRasterizationStateCreateInfo *dst,
+                              const VkPipelineRasterizationStateCreateInfo *src)
+{
+   memcpy(dst, src, sizeof(VkPipelineRasterizationStateCreateInfo));
+   dst->pNext = NULL;
+
+   if (src->pNext) {
+      vk_foreach_struct(ext, src->pNext) {
+         switch (ext->sType) {
+         case VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_DEPTH_CLIP_STATE_CREATE_INFO_EXT: {
+            VkPipelineRasterizationDepthClipStateCreateInfoEXT *ext_src = (VkPipelineRasterizationDepthClipStateCreateInfoEXT *)ext;
+            VkPipelineRasterizationDepthClipStateCreateInfoEXT *ext_dst = ralloc(mem_ctx, VkPipelineRasterizationDepthClipStateCreateInfoEXT);
+            ext_dst->sType = ext_src->sType;
+            ext_dst->flags = ext_src->flags;
+            ext_dst->depthClipEnable = ext_src->depthClipEnable;
+            dst->pNext = ext_dst;
+            break;
+         }
+         default:
+            break;
+         }
+      }
+   }
+   return VK_SUCCESS;
+}
+
 static VkResult
 deep_copy_graphics_create_info(void *mem_ctx,
                                VkGraphicsPipelineCreateInfo *dst,
@@ -248,6 +277,7 @@ deep_copy_graphics_create_info(void *mem_ctx,
    VkResult result;
    VkPipelineShaderStageCreateInfo *stages;
    VkPipelineVertexInputStateCreateInfo *vertex_input;
+   VkPipelineRasterizationStateCreateInfo *rasterization_state;
    LVP_FROM_HANDLE(lvp_render_pass, pass, src->renderPass);
 
    dst->sType = src->sType;
@@ -313,10 +343,11 @@ deep_copy_graphics_create_info(void *mem_ctx,
       dst->pViewportState = NULL;
 
    /* pRasterizationState */
-   LVP_PIPELINE_DUP(dst->pRasterizationState,
+   rasterization_state = ralloc(mem_ctx, VkPipelineRasterizationStateCreateInfo);
-                    src->pRasterizationState,
+   if (!rasterization_state)
-                    VkPipelineRasterizationStateCreateInfo,
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
-                    1);
+   deep_copy_rasterization_state(mem_ctx, rasterization_state, src->pRasterizationState);
+   dst->pRasterizationState = rasterization_state;
 
    /* pMultisampleState */
    if (src->pMultisampleState && !rasterization_disabled) {