anv: allocate fake render pass for continuation command buffers

v4: Assert if there's no VkCommandBufferInheritanceRenderingInfoKHR (Lionel)

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13980>

src/intel/vulkan/anv_private.h

@@ -3086,6 +3086,8 @@ struct anv_cmd_state {
     * is one of the states in attachment_states.
     */
    struct anv_state                             null_surface_state;
+
+   struct anv_dynamic_render_pass               dynamic_render_pass;
 };
 
 struct anv_cmd_pool {

src/intel/vulkan/genX_cmd_buffer.c

@@ -1817,8 +1817,39 @@ genX(BeginCommandBuffer)(
       assert(pBeginInfo->pInheritanceInfo);
       ANV_FROM_HANDLE(anv_render_pass, pass,
                       pBeginInfo->pInheritanceInfo->renderPass);
-      struct anv_subpass *subpass =
+      struct anv_subpass *subpass;
-         &pass->subpasses[pBeginInfo->pInheritanceInfo->subpass];
+      if (!pass) {
+         const VkCommandBufferInheritanceRenderingInfoKHR *inheritance_info =
+            vk_find_struct_const(pBeginInfo->pInheritanceInfo->pNext,
+                                 COMMAND_BUFFER_INHERITANCE_RENDERING_INFO_KHR);
+         assert(inheritance_info);
+         struct anv_dynamic_pass_create_info info = {
+            .viewMask = inheritance_info->viewMask,
+            .colorAttachmentCount = inheritance_info->colorAttachmentCount,
+            .pColorAttachmentFormats = inheritance_info->pColorAttachmentFormats,
+            .depthAttachmentFormat = inheritance_info->depthAttachmentFormat,
+            .stencilAttachmentFormat = inheritance_info->stencilAttachmentFormat,
+            .rasterizationSamples = inheritance_info->rasterizationSamples,
+         };
+         anv_dynamic_pass_init(&cmd_buffer->state.dynamic_render_pass, &info);
+         pass = &cmd_buffer->state.dynamic_render_pass.pass;
+         subpass = &cmd_buffer->state.dynamic_render_pass.subpass;
+
+         result = cmd_buffer_alloc_state_attachments(cmd_buffer,
+                                                     pass->attachment_count);
+         if (result != VK_SUCCESS)
+            return result;
+
+         result = genX(cmd_buffer_alloc_att_surf_states)(cmd_buffer, pass,
+                                                         subpass);
+         if (result != VK_SUCCESS)
+            return result;
+
+         cmd_buffer->state.pass = pass;
+         cmd_buffer->state.subpass = subpass;
+      } else {
+         subpass = &pass->subpasses[pBeginInfo->pInheritanceInfo->subpass];
+
          ANV_FROM_HANDLE(anv_framebuffer, framebuffer,
                          pBeginInfo->pInheritanceInfo->framebuffer);
 
@@ -1856,6 +1887,7 @@ genX(BeginCommandBuffer)(
                cmd_buffer->state.hiz_enabled = isl_aux_usage_has_hiz(aux_usage);
             }
          }
+      }
 
       cmd_buffer->state.gfx.dirty |= ANV_CMD_DIRTY_RENDER_TARGETS;
    }