[Vulkan] Basic texture descriptor set allocation/binding

src/xenia/gpu/vulkan/vulkan_shader.h

@@ -2,7 +2,7 @@
  ******************************************************************************
  * Xenia : Xbox 360 Emulator Research Project                                 *
  ******************************************************************************
- * Copyright 2020 Ben Vanik. All rights reserved.                             *
+ * Copyright 2022 Ben Vanik. All rights reserved.                             *
  * Released under the BSD license - see LICENSE in the root for more details. *
  ******************************************************************************
  */
@@ -12,7 +12,7 @@
 
 #include <cstdint>
 
-#include "xenia/gpu/shader.h"
+#include "xenia/gpu/spirv_shader.h"
 #include "xenia/gpu/xenos.h"
 #include "xenia/ui/vulkan/vulkan_provider.h"
 
@@ -20,12 +20,12 @@ namespace xe {
 namespace gpu {
 namespace vulkan {
 
-class VulkanShader : public Shader {
+class VulkanShader : public SpirvShader {
  public:
-  class VulkanTranslation : public Translation {
+  class VulkanTranslation : public SpirvTranslation {
    public:
-    VulkanTranslation(VulkanShader& shader, uint64_t modification)
-        : Translation(shader, modification) {}
+    explicit VulkanTranslation(VulkanShader& shader, uint64_t modification)
+        : SpirvTranslation(shader, modification) {}
     ~VulkanTranslation() override;
 
     VkShaderModule GetOrCreateShaderModule();
@@ -35,16 +35,43 @@ class VulkanShader : public Shader {
     VkShaderModule shader_module_ = VK_NULL_HANDLE;
   };
 
-  VulkanShader(const ui::vulkan::VulkanProvider& provider,
-               xenos::ShaderType shader_type, uint64_t ucode_data_hash,
-               const uint32_t* ucode_dwords, size_t ucode_dword_count,
-               std::endian ucode_source_endian = std::endian::big);
+  explicit VulkanShader(const ui::vulkan::VulkanProvider& provider,
+                        xenos::ShaderType shader_type, uint64_t ucode_data_hash,
+                        const uint32_t* ucode_dwords, size_t ucode_dword_count,
+                        std::endian ucode_source_endian = std::endian::big);
+
+  // For owning subsystem like the pipeline cache, accessors for unique
+  // identifiers (used instead of hashes to make sure collisions can't happen)
+  // of binding layouts used by the shader, for invalidation if a shader with an
+  // incompatible layout has been bound.
+  size_t GetTextureBindingLayoutUserUID() const {
+    return texture_binding_layout_user_uid_;
+  }
+  size_t GetSamplerBindingLayoutUserUID() const {
+    return sampler_binding_layout_user_uid_;
+  }
+  // Modifications of the same shader can be translated on different threads.
+  // The "set" function must only be called if "enter" returned true - these are
+  // set up only once.
+  bool EnterBindingLayoutUserUIDSetup() {
+    return !binding_layout_user_uids_set_up_.test_and_set();
+  }
+  void SetTextureBindingLayoutUserUID(size_t uid) {
+    texture_binding_layout_user_uid_ = uid;
+  }
+  void SetSamplerBindingLayoutUserUID(size_t uid) {
+    sampler_binding_layout_user_uid_ = uid;
+  }
 
  protected:
   Translation* CreateTranslationInstance(uint64_t modification) override;
 
  private:
   const ui::vulkan::VulkanProvider& provider_;
+
+  std::atomic_flag binding_layout_user_uids_set_up_ = ATOMIC_FLAG_INIT;
+  size_t texture_binding_layout_user_uid_ = 0;
+  size_t sampler_binding_layout_user_uid_ = 0;
 };
 
 }  // namespace vulkan