Initial refactoring of gpu/.

Runs too fast - now there are ringbuffer wrapping issues.

src/xenia/gpu/texture_cache.cc

@@ -1,50 +0,0 @@
-/**
- ******************************************************************************
- * 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/texture_cache.h>
-
-#include <xenia/gpu/xenos/ucode.h>
-
-
-using namespace xe;
-using namespace xe::gpu;
-using namespace xe::gpu::xenos;
-
-
-// https://github.com/ivmai/bdwgc/blob/master/os_dep.c
-
-TextureCache::TextureCache(Memory* memory)
-    : memory_(memory) {
-}
-
-TextureCache::~TextureCache() {
-  for (auto it = textures_.begin(); it != textures_.end(); ++it) {
-    auto texture = it->second;
-    delete texture;
-  }
-  textures_.clear();
-}
-
-TextureView* TextureCache::FetchTexture(
-    uint32_t address, const xenos::xe_gpu_texture_fetch_t& fetch) {
-  auto it = textures_.find(address);
-  if (it == textures_.end()) {
-    // Texture not found.
-    const uint8_t* host_address = memory_->Translate(address);
-    auto texture = CreateTexture(address, host_address, fetch);
-    if (!texture) {
-      return nullptr;
-    }
-    textures_.insert({ address, texture });
-    return texture->Fetch(fetch);
-  } else {
-    // Texture found.
-    return it->second->Fetch(fetch);
-  }
-}