[Vulkan] Add gamma_render_target_as_srgb support

src/xenia/gpu/vulkan/vulkan_pipeline_cache.cc

@@ -59,6 +59,7 @@ bool VulkanPipelineCache::Initialize() {
       render_target_cache_.msaa_2x_attachments_supported(),
       render_target_cache_.msaa_2x_no_attachments_supported(),
       edram_fragment_shader_interlock,
+      render_target_cache_.gamma_render_target_as_srgb(),
       render_target_cache_.draw_resolution_scale_x(),
       render_target_cache_.draw_resolution_scale_y());
 

src/xenia/gpu/vulkan/vulkan_render_target_cache.cc

@@ -520,6 +520,7 @@ bool VulkanRenderTargetCache::Initialize(uint32_t shared_memory_binding_count) {
     // Host render targets.
 
     depth_float24_round_ = cvars::depth_float24_round;
+    gamma_render_target_as_srgb_ = cvars::gamma_render_target_as_srgb;
 
     // Host depth storing pipeline layout.
     VkDescriptorSetLayout host_depth_store_descriptor_set_layouts[] = {

src/xenia/gpu/vulkan/vulkan_render_target_cache.h

@@ -155,6 +155,9 @@ class VulkanRenderTargetCache final : public RenderTargetCache {
     return depth_unorm24_vulkan_format_supported_;
   }
   bool depth_float24_round() const { return depth_float24_round_; }
+  bool gamma_render_target_as_srgb() const {
+    return gamma_render_target_as_srgb_;
+  }
 
   bool msaa_2x_attachments_supported() const {
     return msaa_2x_attachments_supported_;