Caching index buffers.

src/xenia/gpu/buffer.cc

@@ -0,0 +1,40 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/gpu/buffer.h>
+
+#include <xenia/gpu/xenos/ucode_disassembler.h>
+
+
+using namespace xe;
+using namespace xe::gpu;
+using namespace xe::gpu::xenos;
+
+
+Buffer::Buffer(
+    const uint8_t* src_ptr, size_t length) :
+    src_(src_ptr), length_(length) {
+}
+
+Buffer::~Buffer() {
+}
+
+IndexBuffer::IndexBuffer(const IndexBufferInfo& info,
+                         const uint8_t* src_ptr, size_t length)
+    : Buffer(src_ptr, length),
+      info_(info) {
+}
+
+IndexBuffer::~IndexBuffer() {}
+
+VertexBuffer::VertexBuffer(const uint8_t* src_ptr, size_t length)
+    : Buffer(src_ptr, length) {
+}
+
+VertexBuffer::~VertexBuffer() {}

src/xenia/gpu/buffer.h

@@ -0,0 +1,72 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_BUFFER_H_
+#define XENIA_GPU_BUFFER_H_
+
+#include <xenia/core.h>
+#include <xenia/gpu/xenos/ucode.h>
+#include <xenia/gpu/xenos/xenos.h>
+
+
+namespace xe {
+namespace gpu {
+
+
+class Buffer {
+public:
+  Buffer(const uint8_t* src_ptr, size_t length);
+  virtual ~Buffer();
+
+  const uint8_t* src() const { return src_; }
+  size_t length() const { return length_; }
+  uint64_t hash() const { return hash_; }
+
+  virtual bool FetchNew(uint64_t hash) = 0;
+  virtual bool FetchDirty(uint64_t hash) = 0;
+
+protected:
+  const uint8_t* src_;
+  size_t      length_;
+  uint64_t    hash_;
+};
+
+
+struct IndexBufferInfo {
+  bool index_32bit;
+  uint32_t index_count;
+  uint32_t index_size;
+  uint32_t endianness;
+};
+
+
+class IndexBuffer : public Buffer {
+public:
+  IndexBuffer(const IndexBufferInfo& info,
+              const uint8_t* src_ptr, size_t length);
+  virtual ~IndexBuffer();
+
+protected:
+  IndexBufferInfo info_;
+};
+
+
+class VertexBuffer : public Buffer {
+public:
+  VertexBuffer(const uint8_t* src_ptr, size_t length);
+  virtual ~VertexBuffer();
+};
+
+
+
+}  // namespace gpu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_BUFFER_H_

src/xenia/gpu/buffer_cache.cc

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/gpu/buffer_cache.h>
+
+#include <xenia/gpu/buffer.h>
+
+
+using namespace std;
+using namespace xe;
+using namespace xe::gpu;
+using namespace xe::gpu::xenos;
+
+
+BufferCache::BufferCache() {
+}
+
+BufferCache::~BufferCache() {
+  Clear();
+}
+
+IndexBuffer* BufferCache::FetchIndexBuffer(
+    const IndexBufferInfo& info,
+    const uint8_t* src_ptr, size_t length) {
+  size_t key = hash_combine(info.endianness, info.index_32bit, info.index_count, info.index_size);
+  size_t hash = xe_hash64(src_ptr, length);
+  auto it = index_buffer_map_.find(key);
+  if (it != index_buffer_map_.end()) {
+    if (hash == it->second->hash()) {
+      return it->second;
+    } else {
+      return it->second->FetchDirty(hash) ? it->second : nullptr;
+    }
+  } else {
+    auto buffer = CreateIndexBuffer(info, src_ptr, length);
+    index_buffer_map_.insert({ key, buffer });
+    if (!buffer->FetchNew(hash)) {
+      return nullptr;
+    }
+    return buffer;
+  }
+}
+
+void BufferCache::Clear() {
+  for (auto it = index_buffer_map_.begin();
+       it != index_buffer_map_.end(); ++it) {
+    auto buffer = it->second;
+    delete buffer;
+  }
+  index_buffer_map_.clear();
+}

src/xenia/gpu/buffer_cache.h

@@ -0,0 +1,47 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_BUFFER_CACHE_H_
+#define XENIA_GPU_BUFFER_CACHE_H_
+
+#include <xenia/core.h>
+#include <xenia/gpu/buffer.h>
+#include <xenia/gpu/xenos/xenos.h>
+
+
+namespace xe {
+namespace gpu {
+
+
+class BufferCache {
+public:
+  BufferCache();
+  virtual ~BufferCache();
+
+  IndexBuffer* FetchIndexBuffer(
+      const IndexBufferInfo& info,
+      const uint8_t* src_ptr, size_t length);
+
+  void Clear();
+
+protected:
+  virtual IndexBuffer* CreateIndexBuffer(
+      const IndexBufferInfo& info,
+      const uint8_t* src_ptr, size_t length) = 0;
+
+private:
+  std::unordered_map<uint64_t, IndexBuffer*> index_buffer_map_;
+};
+
+
+}  // namespace gpu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_BUFFER_CACHE_H_

src/xenia/gpu/d3d11/d3d11_buffer.cc

@@ -0,0 +1,79 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/gpu/d3d11/d3d11_buffer.h>
+
+#include <xenia/gpu/gpu-private.h>
+#include <xenia/gpu/d3d11/d3d11_buffer_cache.h>
+
+
+using namespace xe;
+using namespace xe::gpu;
+using namespace xe::gpu::d3d11;
+using namespace xe::gpu::xenos;
+
+
+D3D11IndexBuffer::D3D11IndexBuffer(
+    D3D11BufferCache* buffer_cache,
+    const IndexBufferInfo& info,
+    const uint8_t* src_ptr, size_t length)
+    : IndexBuffer(info, src_ptr, length),
+      buffer_cache_(buffer_cache),
+      handle_(nullptr) {
+}
+
+D3D11IndexBuffer::~D3D11IndexBuffer() {
+  XESAFERELEASE(handle_);
+}
+
+bool D3D11IndexBuffer::FetchNew(uint64_t hash) {
+  hash_ = hash;
+
+  D3D11_BUFFER_DESC buffer_desc;
+  xe_zero_struct(&buffer_desc, sizeof(buffer_desc));
+  buffer_desc.ByteWidth       = info_.index_size;
+  buffer_desc.Usage           = D3D11_USAGE_DYNAMIC;
+  buffer_desc.BindFlags       = D3D11_BIND_INDEX_BUFFER;
+  buffer_desc.CPUAccessFlags  = D3D11_CPU_ACCESS_WRITE;
+  HRESULT hr = buffer_cache_->device()->CreateBuffer(&buffer_desc, NULL, &handle_);
+  if (FAILED(hr)) {
+    XELOGW("D3D11: failed to create index buffer");
+    return false;
+  }
+
+  return FetchDirty(hash);
+}
+
+bool D3D11IndexBuffer::FetchDirty(uint64_t hash) {
+  hash_ = hash;
+  
+  // All that's done so far:
+  XEASSERT(info_.endianness == 0x2);
+
+  D3D11_MAPPED_SUBRESOURCE res;
+  buffer_cache_->context()->Map(handle_, 0, D3D11_MAP_WRITE_DISCARD, 0, &res);
+  if (info_.index_32bit) {
+    const uint32_t* src = reinterpret_cast<const uint32_t*>(src_);
+    uint32_t* dest = reinterpret_cast<uint32_t*>(res.pData);
+    for (uint32_t n = 0; n < info_.index_count; n++) {
+      uint32_t d = { XESWAP32(src[n]) };
+      dest[n] = d;
+    }
+  } else {
+    const uint16_t* src = reinterpret_cast<const uint16_t*>(src_);
+    uint16_t* dest = reinterpret_cast<uint16_t*>(res.pData);
+    for (uint32_t n = 0; n < info_.index_count; n++) {
+      uint16_t d = XESWAP16(src[n]);
+      dest[n] = d;
+    }
+  }
+  buffer_cache_->context()->Unmap(handle_, 0);
+
+  return true;
+}

src/xenia/gpu/d3d11/d3d11_buffer.h

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_D3D11_D3D11_BUFFER_H_
+#define XENIA_GPU_D3D11_D3D11_BUFFER_H_
+
+#include <xenia/core.h>
+
+#include <xenia/gpu/buffer.h>
+#include <xenia/gpu/xenos/xenos.h>
+
+#include <d3d11.h>
+
+
+namespace xe {
+namespace gpu {
+namespace d3d11 {
+
+class D3D11BufferCache;
+
+
+class D3D11IndexBuffer : public IndexBuffer {
+public:
+  D3D11IndexBuffer(D3D11BufferCache* buffer_cache,
+                   const IndexBufferInfo& info,
+                   const uint8_t* src_ptr, size_t length);
+  virtual ~D3D11IndexBuffer();
+
+  ID3D11Buffer* handle() const { return handle_; }
+
+  bool FetchNew(uint64_t hash) override;
+  bool FetchDirty(uint64_t hash) override;
+
+private:
+  D3D11BufferCache* buffer_cache_;
+  ID3D11Buffer* handle_;
+};
+
+
+class D3D11VertexBuffer : public VertexBuffer {
+public:
+private:
+};
+
+
+}  // namespace d3d11
+}  // namespace gpu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_D3D11_D3D11_BUFFER_H_

src/xenia/gpu/d3d11/d3d11_buffer_cache.cc

@@ -0,0 +1,38 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/gpu/d3d11/d3d11_buffer_cache.h>
+
+#include <xenia/gpu/gpu-private.h>
+#include <xenia/gpu/d3d11/d3d11_buffer.h>
+
+
+using namespace xe;
+using namespace xe::gpu;
+using namespace xe::gpu::d3d11;
+using namespace xe::gpu::xenos;
+
+
+D3D11BufferCache::D3D11BufferCache(ID3D11DeviceContext* context,
+                                   ID3D11Device* device)
+    : context_(context), device_(device) {
+  context->AddRef();
+  device_->AddRef();
+}
+
+D3D11BufferCache::~D3D11BufferCache() {
+  XESAFERELEASE(device_);
+  XESAFERELEASE(context_);
+}
+
+IndexBuffer* D3D11BufferCache::CreateIndexBuffer(
+    const IndexBufferInfo& info,
+    const uint8_t* src_ptr, size_t length) {
+  return new D3D11IndexBuffer(this, info, src_ptr, length);
+}

src/xenia/gpu/d3d11/d3d11_buffer_cache.h

@@ -0,0 +1,50 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_D3D11_D3D11_BUFFER_CACHE_H_
+#define XENIA_GPU_D3D11_D3D11_BUFFER_CACHE_H_
+
+#include <xenia/core.h>
+
+#include <xenia/gpu/buffer_cache.h>
+#include <xenia/gpu/xenos/xenos.h>
+
+#include <d3d11.h>
+
+
+namespace xe {
+namespace gpu {
+namespace d3d11 {
+
+
+class D3D11BufferCache : public BufferCache {
+public:
+  D3D11BufferCache(ID3D11DeviceContext* context, ID3D11Device* device);
+  virtual ~D3D11BufferCache();
+
+  ID3D11DeviceContext* context() const { return context_; }
+  ID3D11Device* device() const { return device_; }
+
+protected:
+  IndexBuffer* CreateIndexBuffer(
+      const IndexBufferInfo& info,
+      const uint8_t* src_ptr, size_t length) override;
+
+protected:
+  ID3D11DeviceContext* context_;
+  ID3D11Device* device_;
+};
+
+
+}  // namespace d3d11
+}  // namespace gpu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_D3D11_D3D11_BUFFER_CACHE_H_

src/xenia/gpu/d3d11/d3d11_graphics_driver.cc

@@ -10,6 +10,8 @@
 #include <xenia/gpu/d3d11/d3d11_graphics_driver.h>
 
 #include <xenia/gpu/gpu-private.h>
+#include <xenia/gpu/d3d11/d3d11_buffer.h>
+#include <xenia/gpu/d3d11/d3d11_buffer_cache.h>
 #include <xenia/gpu/d3d11/d3d11_geometry_shader.h>
 #include <xenia/gpu/d3d11/d3d11_shader.h>
 #include <xenia/gpu/d3d11/d3d11_shader_cache.h>
@@ -33,6 +35,7 @@ D3D11GraphicsDriver::D3D11GraphicsDriver(
   device_ = device;
   device_->AddRef();
   device_->GetImmediateContext(&context_);
+  buffer_cache_ = new D3D11BufferCache(context_, device_);
   shader_cache_ = new D3D11ShaderCache(device_);
   texture_cache_ = new D3D11TextureCache(memory_, context_, device_);
 
@@ -136,6 +139,7 @@ D3D11GraphicsDriver::~D3D11GraphicsDriver() {
   XESAFERELEASE(state_.constant_buffers.gs_consts);
   XESAFERELEASE(invalid_texture_view_);
   XESAFERELEASE(invalid_texture_sampler_state_);
+  delete buffer_cache_;
   delete texture_cache_;
   delete shader_cache_;
   XESAFERELEASE(context_);
@@ -1098,43 +1102,20 @@ int D3D11GraphicsDriver::PrepareIndexBuffer(
 
   uint32_t address = index_base + address_translation_;
 
-  // All that's done so far:
-  XEASSERT(endianness == 0x2);
-
-  ID3D11Buffer* buffer = 0;
-  D3D11_BUFFER_DESC buffer_desc;
-  xe_zero_struct(&buffer_desc, sizeof(buffer_desc));
-  buffer_desc.ByteWidth       = index_size;
-  buffer_desc.Usage           = D3D11_USAGE_DYNAMIC;
-  buffer_desc.BindFlags       = D3D11_BIND_INDEX_BUFFER;
-  buffer_desc.CPUAccessFlags  = D3D11_CPU_ACCESS_WRITE;
-  device_->CreateBuffer(&buffer_desc, NULL, &buffer);
-  D3D11_MAPPED_SUBRESOURCE res;
-  context_->Map(buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &res);
-  if (index_32bit) {
-    uint32_t* src = (uint32_t*)memory_->Translate(address);
-    uint32_t* dest = (uint32_t*)res.pData;
-    for (uint32_t n = 0; n < index_count; n++) {
-      uint32_t d = { XESWAP32(src[n]) };
-      //XELOGGPU("i%.4d %0.8X", n, d);
-      dest[n] = d;
-    }
-  } else {
-    uint16_t* src = (uint16_t*)memory_->Translate(address);
-    uint16_t* dest = (uint16_t*)res.pData;
-    for (uint32_t n = 0; n < index_count; n++) {
-      uint16_t d = XESWAP16(src[n]);
-      //XELOGGPU("i%.4d, %.4X", n, d);
-      dest[n] = d;
-    }
+  IndexBufferInfo info;
+  info.endianness = endianness;
+  info.index_32bit = index_32bit;
+  info.index_count = index_count;
+  info.index_size = index_size;
+  auto ib = static_cast<D3D11IndexBuffer*>(buffer_cache_->FetchIndexBuffer(
+      info, memory_->Translate(address), index_size));
+  if (!ib) {
+    return 1;
   }
-  context_->Unmap(buffer, 0);
 
   DXGI_FORMAT format;
   format = index_32bit ? DXGI_FORMAT_R32_UINT : DXGI_FORMAT_R16_UINT;
-  context_->IASetIndexBuffer(buffer, format, 0);
-
-  buffer->Release();
+  context_->IASetIndexBuffer(ib->handle(), format, 0);
 
   return 0;
 }

src/xenia/gpu/d3d11/d3d11_graphics_driver.h

@@ -24,6 +24,7 @@ namespace xe {
 namespace gpu {
 namespace d3d11 {
 
+class D3D11BufferCache;
 class D3D11PixelShader;
 class D3D11ShaderCache;
 class D3D11TextureCache;
@@ -76,6 +77,7 @@ private:
   IDXGISwapChain*       swap_chain_;
   ID3D11Device*         device_;
   ID3D11DeviceContext*  context_;
+  D3D11BufferCache*     buffer_cache_;
   D3D11ShaderCache*     shader_cache_;
   D3D11TextureCache*    texture_cache_;
 

src/xenia/gpu/d3d11/d3d11_shader_cache.h

@@ -28,10 +28,10 @@ public:
   virtual ~D3D11ShaderCache();
 
 protected:
-  virtual Shader* CreateCore(
+  Shader* CreateCore(
       xenos::XE_GPU_SHADER_TYPE type,
       const uint8_t* src_ptr, size_t length,
-      uint64_t hash);
+      uint64_t hash) override;
 
 protected:
   ID3D11Device* device_;

src/xenia/gpu/d3d11/sources.gypi

@@ -1,6 +1,10 @@
 # Copyright 2013 Ben Vanik. All Rights Reserved.
 {
   'sources': [
+    'd3d11_buffer.cc',
+    'd3d11_buffer.h',
+    'd3d11_buffer_cache.cc',
+    'd3d11_buffer_cache.h',
     'd3d11_geometry_shader.cc',
     'd3d11_geometry_shader.h',
     'd3d11_gpu-private.h',

src/xenia/gpu/shader_cache.cc

@@ -30,7 +30,7 @@ Shader* ShaderCache::Create(
     const uint8_t* src_ptr, size_t length) {
   uint64_t hash = Hash(src_ptr, length);
   Shader* shader = CreateCore(type, src_ptr, length, hash);
-  map_.insert(pair<uint64_t, Shader*>(hash, shader));
+  map_.insert({ hash, shader });
   return shader;
 }
 
@@ -45,7 +45,7 @@ Shader* ShaderCache::Find(
     XE_GPU_SHADER_TYPE type,
     const uint8_t* src_ptr, size_t length) {
   uint64_t hash = Hash(src_ptr, length);
-  unordered_map<uint64_t, Shader*>::iterator it = map_.find(hash);
+  auto it = map_.find(hash);
   if (it != map_.end()) {
     return it->second;
   }
@@ -58,19 +58,17 @@ Shader* ShaderCache::FindOrCreate(
   SCOPE_profile_cpu_f("gpu");
 
   uint64_t hash = Hash(src_ptr, length);
-  unordered_map<uint64_t, Shader*>::iterator it = map_.find(hash);
+  auto it = map_.find(hash);
   if (it != map_.end()) {
     return it->second;
   }
   Shader* shader = CreateCore(type, src_ptr, length, hash);
-  map_.insert(pair<uint64_t, Shader*>(hash, shader));
+  map_.insert({ hash, shader });
   return shader;
 }
 
 void ShaderCache::Clear() {
-  // TODO(benvanik): clear.
-  for (unordered_map<uint64_t, Shader*>::iterator it = map_.begin();
-      it != map_.end(); ++it) {
+  for (auto it = map_.begin(); it != map_.end(); ++it) {
     Shader* shader = it->second;
     delete shader;
   }

src/xenia/gpu/sources.gypi

@@ -1,6 +1,10 @@
 # Copyright 2013 Ben Vanik. All Rights Reserved.
 {
   'sources': [
+    'buffer.cc',
+    'buffer.h',
+    'buffer_cache.cc',
+    'buffer_cache.h',
     'command_buffer.h',
     'gpu-private.h',
     'gpu.cc',