Add more debugging to desc layout

vulkan-rs/src/descriptorsetlayout.rs

@@ -70,6 +70,12 @@ impl DescriptorSetLayoutBuilder {
             */
         }
 
+        let bindings = self
+            .layout_bindings
+            .iter()
+            .map(|b| DescriptorLayoutBinding::from(b.clone()))
+            .collect();
+
         let descriptor_set_layout = device.create_descriptor_set_layout(&descriptor_set_ci)?;
 
         let pool_sizes = self
@@ -85,6 +91,8 @@ impl DescriptorSetLayoutBuilder {
             device,
             descriptor_set_layout,
             pool_sizes,
+
+            bindings,
         }))
     }
 }
@@ -94,6 +102,8 @@ pub struct DescriptorSetLayout {
     device: Arc<Device>,
     descriptor_set_layout: VkDescriptorSetLayout,
     pool_sizes: Vec<VkDescriptorPoolSize>,
+
+    bindings: Vec<DescriptorLayoutBinding>,
 }
 
 impl DescriptorSetLayout {
@@ -108,6 +118,10 @@ impl DescriptorSetLayout {
     pub(crate) fn pool_sizes(&self) -> &[VkDescriptorPoolSize] {
         self.pool_sizes.as_slice()
     }
+
+    pub fn bindings(&self) -> &[DescriptorLayoutBinding] {
+        &self.bindings
+    }
 }
 
 impl VulkanDevice for DescriptorSetLayout {
@@ -128,3 +142,42 @@ impl Drop for DescriptorSetLayout {
             .destroy_descriptor_set_layout(self.descriptor_set_layout);
     }
 }
+
+#[derive(Debug)]
+pub struct DescriptorLayoutBinding {
+    pub binding: u32,
+    pub desc_type: VkDescriptorType,
+    pub stage_flags: Vec<VkShaderStageFlags>,
+}
+
+impl From<VkDescriptorSetLayoutBinding> for DescriptorLayoutBinding {
+    fn from(value: VkDescriptorSetLayoutBinding) -> Self {
+        let flag_enum_list = [
+            VK_SHADER_STAGE_VERTEX_BIT,
+            VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
+            VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
+            VK_SHADER_STAGE_GEOMETRY_BIT,
+            VK_SHADER_STAGE_FRAGMENT_BIT,
+            VK_SHADER_STAGE_COMPUTE_BIT,
+            VK_SHADER_STAGE_ALL_GRAPHICS,
+            VK_SHADER_STAGE_ALL,
+            VK_SHADER_STAGE_RAYGEN_BIT_KHR,
+            VK_SHADER_STAGE_ANY_HIT_BIT_KHR,
+            VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR,
+            VK_SHADER_STAGE_MISS_BIT_KHR,
+            VK_SHADER_STAGE_INTERSECTION_BIT_KHR,
+            VK_SHADER_STAGE_CALLABLE_BIT_KHR,
+            VK_SHADER_STAGE_TASK_BIT_NV,
+            VK_SHADER_STAGE_MESH_BIT_NV,
+        ];
+
+        Self {
+            binding: value.binding,
+            desc_type: value.descriptorType,
+            stage_flags: flag_enum_list
+                .into_iter()
+                .filter(|&flag| (flag & value.stageFlagBits) != 0)
+                .collect(),
+        }
+    }
+}