[D3D12] Make tiled resource toggleable, disable debug layer by default

src/xenia/gpu/d3d12/d3d12_shader.cc

@@ -15,7 +15,7 @@
 #include "xenia/base/logging.h"
 #include "xenia/gpu/gpu_flags.h"
 
-DEFINE_bool(d3d12_shader_disasm, true,
+DEFINE_bool(d3d12_shader_disasm, false,
             "Disassemble translated shaders after compilation.");
 
 namespace xe {

src/xenia/gpu/d3d12/shared_memory.cc

@@ -46,7 +46,7 @@ bool SharedMemory::Initialize() {
   buffer_state_ = D3D12_RESOURCE_STATE_COPY_DEST;
   D3D12_RESOURCE_DESC buffer_desc;
   buffer_desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
-  buffer_desc.Alignment = D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT;
+  buffer_desc.Alignment = 0;
   buffer_desc.Width = kBufferSize;
   buffer_desc.Height = 1;
   buffer_desc.DepthOrArraySize = 1;
@@ -56,12 +56,24 @@ bool SharedMemory::Initialize() {
   buffer_desc.SampleDesc.Quality = 0;
   buffer_desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
   buffer_desc.Flags = D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS;
-  if (FAILED(device->CreateReservedResource(&buffer_desc, buffer_state_,
-                                            nullptr, IID_PPV_ARGS(&buffer_)))) {
+  if (FLAGS_d3d12_tiled_resources) {
+    if (FAILED(device->CreateReservedResource(
+            &buffer_desc, buffer_state_, nullptr, IID_PPV_ARGS(&buffer_)))) {
       XELOGE("Shared memory: Failed to create the 512 MB tiled buffer");
       Shutdown();
       return false;
     }
+  } else {
+    D3D12_HEAP_PROPERTIES heap_properties = {};
+    heap_properties.Type = D3D12_HEAP_TYPE_DEFAULT;
+    if (FAILED(device->CreateCommittedResource(
+            &heap_properties, D3D12_HEAP_FLAG_NONE, &buffer_desc, buffer_state_,
+            nullptr, IID_PPV_ARGS(&buffer_)))) {
+      XELOGE("Shared memory: Failed to create the 512 MB buffer");
+      Shutdown();
+      return false;
+    }
+  }
   buffer_gpu_address_ = buffer_->GetGPUVirtualAddress();
 
   std::memset(heaps_, 0, sizeof(heaps_));
@@ -95,12 +107,14 @@ void SharedMemory::Shutdown() {
     buffer_ = nullptr;
   }
 
+  if (FLAGS_d3d12_tiled_resources) {
     for (uint32_t i = 0; i < xe::countof(heaps_); ++i) {
       if (heaps_[i] != nullptr) {
         heaps_[i]->Release();
         heaps_[i] = nullptr;
       }
     }
+  }
 }
 
 void SharedMemory::BeginFrame() {
@@ -276,6 +290,7 @@ bool SharedMemory::UseRange(uint32_t start, uint32_t length) {
   // XELOGGPU("Shared memory: Range %.8X-%.8X is being used", start, last);
 
   // Ensure all tile heaps are present.
+  if (FLAGS_d3d12_tiled_resources) {
     uint32_t heap_first = start >> kHeapSizeLog2;
     uint32_t heap_last = last >> kHeapSizeLog2;
     for (uint32_t i = heap_first; i <= heap_last; ++i) {
@@ -296,7 +311,6 @@ bool SharedMemory::UseRange(uint32_t start, uint32_t length) {
       D3D12_HEAP_DESC heap_desc = {};
       heap_desc.SizeInBytes = kHeapSize;
       heap_desc.Properties.Type = D3D12_HEAP_TYPE_DEFAULT;
-    // Flags are required on resource heap tier 1!
       heap_desc.Flags = D3D12_HEAP_FLAG_ALLOW_ONLY_BUFFERS;
       if (FAILED(device->CreateHeap(&heap_desc, IID_PPV_ARGS(&heaps_[i])))) {
         XELOGE("Shared memory: Failed to create a tile heap");
@@ -323,6 +337,7 @@ bool SharedMemory::UseRange(uint32_t start, uint32_t length) {
           &range_flags, &heap_range_start_offset, &range_tile_count,
           D3D12_TILE_MAPPING_FLAG_NONE);
     }
+  }
 
   // Mark the outdated tiles in this range as requiring upload, and also make
   // them up-to-date so textures aren't invalidated every use.

src/xenia/ui/d3d12/d3d12_api.cc

@@ -0,0 +1,16 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2018 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/ui/d3d12/d3d12_api.h"
+
+DEFINE_bool(d3d12_tiled_resources, true,
+            "Enable tiled resources for shared memory emulation. Disabling "
+            "them greatly increases video memory usage - a 512 MB buffer is "
+            "created - but allows graphics debuggers that don't support tiled "
+            "resources to work.");

src/xenia/ui/d3d12/d3d12_api.h

@@ -10,6 +10,8 @@
 #ifndef XENIA_UI_D3D12_D3D12_API_H_
 #define XENIA_UI_D3D12_D3D12_API_H_
 
+#include <gflags/gflags.h>
+
 // This must be included before D3D and DXGI for things like NOMINMAX.
 #include "xenia/base/platform_win.h"
 
@@ -19,4 +21,6 @@
 
 #define XELOGD3D XELOGI
 
+DECLARE_bool(d3d12_tiled_resources);
+
 #endif  // XENIA_UI_D3D12_D3D12_API_H_

src/xenia/ui/d3d12/d3d12_provider.cc

@@ -14,7 +14,7 @@
 #include "xenia/base/logging.h"
 #include "xenia/ui/d3d12/d3d12_context.h"
 
-DEFINE_bool(d3d12_debug, true, "Enable Direct3D 12 and DXGI debug layer.");
+DEFINE_bool(d3d12_debug, false, "Enable Direct3D 12 and DXGI debug layer.");
 DEFINE_int32(d3d12_adapter_index, -1, "Index of the DXGI adapter to use. "
              "-1 for any physical adapter, -2 for WARP software rendering.");
 
@@ -155,8 +155,15 @@ bool D3D12Provider::IsDeviceSupported(ID3D12Device* device) {
                                          sizeof(options)))) {
     return false;
   }
-  // Tiled resources required for virtual memory.
-  return options.TiledResourcesTier >= D3D12_TILED_RESOURCES_TIER_1;
+
+  // Tiled resources required for shared memory emulation without excessive
+  // video memory usage.
+  if (FLAGS_d3d12_tiled_resources &&
+      options.TiledResourcesTier < D3D12_TILED_RESOURCES_TIER_1) {
+    return false;
+  }
+
+  return true;
 }
 
 std::unique_ptr<GraphicsContext> D3D12Provider::CreateContext(