Adding texture setup and a dummy grid texture.

src/xenia/gpu/vulkan/texture_cache.h

@@ -12,6 +12,7 @@
 
 #include "xenia/gpu/register_file.h"
 #include "xenia/gpu/shader.h"
+#include "xenia/gpu/trace_writer.h"
 #include "xenia/gpu/xenos.h"
 #include "xenia/ui/vulkan/vulkan.h"
 #include "xenia/ui/vulkan/vulkan_device.h"
@@ -23,7 +24,8 @@ namespace vulkan {
 //
 class TextureCache {
  public:
-  TextureCache(RegisterFile* register_file, ui::vulkan::VulkanDevice* device);
+  TextureCache(RegisterFile* register_file, TraceWriter* trace_writer,
+               ui::vulkan::VulkanDevice* device);
   ~TextureCache();
 
   // Descriptor set layout containing all possible texture bindings.
@@ -32,6 +34,13 @@ class TextureCache {
     return texture_descriptor_set_layout_;
   }
 
+  // Prepares a descriptor set containing the samplers and images for all
+  // bindings. The textures will be uploaded/converted/etc as needed.
+  VkDescriptorSet PrepareTextureSet(
+      VkCommandBuffer command_buffer,
+      const std::vector<Shader::TextureBinding>& vertex_bindings,
+      const std::vector<Shader::TextureBinding>& pixel_bindings);
+
   // TODO(benvanik): UploadTexture.
   // TODO(benvanik): Resolve.
   // TODO(benvanik): ReadTexture.
@@ -40,11 +49,42 @@ class TextureCache {
   void ClearCache();
 
  private:
+  struct UpdateSetInfo;
+
+  void SetupGridImages();
+
+  bool SetupTextureBindings(
+      UpdateSetInfo* update_set_info,
+      const std::vector<Shader::TextureBinding>& bindings);
+  bool SetupTextureBinding(UpdateSetInfo* update_set_info,
+                           const Shader::TextureBinding& binding);
+
   RegisterFile* register_file_ = nullptr;
-  VkDevice device_ = nullptr;
+  TraceWriter* trace_writer_ = nullptr;
+  ui::vulkan::VulkanDevice* device_ = nullptr;
 
   VkDescriptorPool descriptor_pool_ = nullptr;
   VkDescriptorSetLayout texture_descriptor_set_layout_ = nullptr;
+
+  VkDeviceMemory grid_image_2d_memory_ = nullptr;
+  VkImage grid_image_2d_ = nullptr;
+  VkImageView grid_image_2d_view_ = nullptr;
+
+  struct UpdateSetInfo {
+    // Bitmap of all 32 fetch constants and whether they have been setup yet.
+    // This prevents duplication across the vertex and pixel shader.
+    uint32_t has_setup_fetch_mask;
+    uint32_t sampler_write_count = 0;
+    VkDescriptorImageInfo sampler_infos[32];
+    uint32_t image_1d_write_count = 0;
+    VkDescriptorImageInfo image_1d_infos[32];
+    uint32_t image_2d_write_count = 0;
+    VkDescriptorImageInfo image_2d_infos[32];
+    uint32_t image_3d_write_count = 0;
+    VkDescriptorImageInfo image_3d_infos[32];
+    uint32_t image_cube_write_count = 0;
+    VkDescriptorImageInfo image_cube_infos[32];
+  } update_set_info_;
 };
 
 }  // namespace vulkan