Merge pull request #5305 from iwubcode/abstract_texture

Abstract Texture

1 files changed, 196 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/D3D/DXTexture.cpp b/Source/Core/VideoBackends/D3D/DXTexture.cpp
new file mode 100644
index 0000000000..765438d679
--- /dev/null
+++ b/Source/Core/VideoBackends/D3D/DXTexture.cpp
@@ -0,0 +1,196 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <cstddef>
+
+#include "Common/Assert.h"
+#include "Common/CommonTypes.h"
+#include "Common/Logging/Log.h"
+
+#include "VideoBackends/D3D/D3DBase.h"
+#include "VideoBackends/D3D/D3DState.h"
+#include "VideoBackends/D3D/D3DTexture.h"
+#include "VideoBackends/D3D/D3DUtil.h"
+#include "VideoBackends/D3D/DXTexture.h"
+#include "VideoBackends/D3D/FramebufferManager.h"
+#include "VideoBackends/D3D/GeometryShaderCache.h"
+#include "VideoBackends/D3D/PixelShaderCache.h"
+#include "VideoBackends/D3D/TextureCache.h"
+#include "VideoBackends/D3D/VertexShaderCache.h"
+
+#include "VideoCommon/ImageWrite.h"
+#include "VideoCommon/TextureConfig.h"
+
+namespace DX11
+{
+namespace
+{
+DXGI_FORMAT GetDXGIFormatForHostFormat(AbstractTextureFormat format)
+{
+  switch (format)
+  {
+  case AbstractTextureFormat::DXT1:
+    return DXGI_FORMAT_BC1_UNORM;
+  case AbstractTextureFormat::DXT3:
+    return DXGI_FORMAT_BC2_UNORM;
+  case AbstractTextureFormat::DXT5:
+    return DXGI_FORMAT_BC3_UNORM;
+  case AbstractTextureFormat::RGBA8:
+  default:
+    return DXGI_FORMAT_R8G8B8A8_UNORM;
+  }
+}
+}  // Anonymous namespace
+
+DXTexture::DXTexture(const TextureConfig& tex_config) : AbstractTexture(tex_config)
+{
+  DXGI_FORMAT dxgi_format = GetDXGIFormatForHostFormat(m_config.format);
+  if (m_config.rendertarget)
+  {
+    m_texture = D3DTexture2D::Create(
+        m_config.width, m_config.height,
+        (D3D11_BIND_FLAG)((int)D3D11_BIND_RENDER_TARGET | (int)D3D11_BIND_SHADER_RESOURCE),
+        D3D11_USAGE_DEFAULT, dxgi_format, 1, m_config.layers);
+  }
+  else
+  {
+    const D3D11_TEXTURE2D_DESC texdesc =
+        CD3D11_TEXTURE2D_DESC(dxgi_format, m_config.width, m_config.height, 1, m_config.levels,
+                              D3D11_BIND_SHADER_RESOURCE, D3D11_USAGE_DEFAULT, 0);
+
+    ID3D11Texture2D* pTexture;
+    const HRESULT hr = D3D::device->CreateTexture2D(&texdesc, nullptr, &pTexture);
+    CHECK(SUCCEEDED(hr), "Create texture of the TextureCache");
+
+    m_texture = new D3DTexture2D(pTexture, D3D11_BIND_SHADER_RESOURCE);
+
+    // TODO: better debug names
+    D3D::SetDebugObjectName((ID3D11DeviceChild*)m_texture->GetTex(),
+                            "a texture of the TextureCache");
+    D3D::SetDebugObjectName((ID3D11DeviceChild*)m_texture->GetSRV(),
+                            "shader resource view of a texture of the TextureCache");
+
+    SAFE_RELEASE(pTexture);
+  }
+}
+
+DXTexture::~DXTexture()
+{
+  m_texture->Release();
+}
+
+D3DTexture2D* DXTexture::GetRawTexIdentifier() const
+{
+  return m_texture;
+}
+
+void DXTexture::Bind(unsigned int stage)
+{
+  D3D::stateman->SetTexture(stage, m_texture->GetSRV());
+}
+
+bool DXTexture::Save(const std::string& filename, unsigned int level)
+{
+  // We can't dump compressed textures currently (it would mean drawing them to a RGBA8
+  // framebuffer, and saving that). TextureCache does not call Save for custom textures
+  // anyway, so this is fine for now.
+  _assert_(m_config.format == AbstractTextureFormat::RGBA8);
+
+  // Create a staging/readback texture with the dimensions of the specified mip level.
+  u32 mip_width = std::max(m_config.width >> level, 1u);
+  u32 mip_height = std::max(m_config.height >> level, 1u);
+  CD3D11_TEXTURE2D_DESC staging_texture_desc(DXGI_FORMAT_R8G8B8A8_UNORM, mip_width, mip_height, 1,
+                                             1, 0, D3D11_USAGE_STAGING, D3D11_CPU_ACCESS_READ);
+
+  ID3D11Texture2D* staging_texture;
+  HRESULT hr = D3D::device->CreateTexture2D(&staging_texture_desc, nullptr, &staging_texture);
+  if (FAILED(hr))
+  {
+    WARN_LOG(VIDEO, "Failed to create texture dumping readback texture: %X", static_cast<u32>(hr));
+    return false;
+  }
+
+  // Copy the selected mip level to the staging texture.
+  CD3D11_BOX src_box(0, 0, 0, mip_width, mip_height, 1);
+  D3D::context->CopySubresourceRegion(staging_texture, 0, 0, 0, 0, m_texture->GetTex(),
+                                      D3D11CalcSubresource(level, 0, m_config.levels), &src_box);
+
+  // Map the staging texture to client memory, and encode it as a .png image.
+  D3D11_MAPPED_SUBRESOURCE map;
+  hr = D3D::context->Map(staging_texture, 0, D3D11_MAP_READ, 0, &map);
+  if (FAILED(hr))
+  {
+    WARN_LOG(VIDEO, "Failed to map texture dumping readback texture: %X", static_cast<u32>(hr));
+    staging_texture->Release();
+    return false;
+  }
+
+  bool encode_result =
+      TextureToPng(reinterpret_cast<u8*>(map.pData), map.RowPitch, filename, mip_width, mip_height);
+  D3D::context->Unmap(staging_texture, 0);
+  staging_texture->Release();
+
+  return encode_result;
+}
+
+void DXTexture::CopyRectangleFromTexture(const AbstractTexture* source,
+                                         const MathUtil::Rectangle<int>& srcrect,
+                                         const MathUtil::Rectangle<int>& dstrect)
+{
+  const DXTexture* srcentry = static_cast<const DXTexture*>(source);
+  if (srcrect.GetWidth() == dstrect.GetWidth() && srcrect.GetHeight() == dstrect.GetHeight())
+  {
+    D3D11_BOX srcbox;
+    srcbox.left = srcrect.left;
+    srcbox.top = srcrect.top;
+    srcbox.right = srcrect.right;
+    srcbox.bottom = srcrect.bottom;
+    srcbox.front = 0;
+    srcbox.back = srcentry->m_config.layers;
+
+    D3D::context->CopySubresourceRegion(m_texture->GetTex(), 0, dstrect.left, dstrect.top, 0,
+                                        srcentry->m_texture->GetTex(), 0, &srcbox);
+    return;
+  }
+  else if (!m_config.rendertarget)
+  {
+    return;
+  }
+  g_renderer->ResetAPIState();  // reset any game specific settings
+
+  const D3D11_VIEWPORT vp = CD3D11_VIEWPORT(float(dstrect.left), float(dstrect.top),
+                                            float(dstrect.GetWidth()), float(dstrect.GetHeight()));
+
+  D3D::stateman->UnsetTexture(m_texture->GetSRV());
+  D3D::stateman->Apply();
+
+  D3D::context->OMSetRenderTargets(1, &m_texture->GetRTV(), nullptr);
+  D3D::context->RSSetViewports(1, &vp);
+  D3D::SetLinearCopySampler();
+  D3D11_RECT srcRC;
+  srcRC.left = srcrect.left;
+  srcRC.right = srcrect.right;
+  srcRC.top = srcrect.top;
+  srcRC.bottom = srcrect.bottom;
+  D3D::drawShadedTexQuad(srcentry->m_texture->GetSRV(), &srcRC, srcentry->m_config.width,
+                         srcentry->m_config.height, PixelShaderCache::GetColorCopyProgram(false),
+                         VertexShaderCache::GetSimpleVertexShader(),
+                         VertexShaderCache::GetSimpleInputLayout(),
+                         GeometryShaderCache::GetCopyGeometryShader(), 1.0, 0);
+
+  D3D::context->OMSetRenderTargets(1, &FramebufferManager::GetEFBColorTexture()->GetRTV(),
+                                   FramebufferManager::GetEFBDepthTexture()->GetDSV());
+
+  g_renderer->RestoreAPIState();
+}
+
+void DXTexture::Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
+                     size_t buffer_size)
+{
+  size_t src_pitch = CalculateHostTextureLevelPitch(m_config.format, row_length);
+  D3D::context->UpdateSubresource(m_texture->GetTex(), level, nullptr, buffer,
+                                  static_cast<UINT>(src_pitch), 0);
+}
+}  // namespace DX11