Merge pull request #3364 from hdcmeta/d3d12merge

DX12 video backend

1 files changed, 110 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/D3D12/NativeVertexFormat.cpp b/Source/Core/VideoBackends/D3D12/NativeVertexFormat.cpp
new file mode 100644
index 0000000000..fda4846367
--- /dev/null
+++ b/Source/Core/VideoBackends/D3D12/NativeVertexFormat.cpp
@@ -0,0 +1,110 @@
+// Copyright 2010 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "VideoBackends/D3D12/D3DBase.h"
+#include "VideoBackends/D3D12/D3DState.h"
+#include "VideoBackends/D3D12/D3DUtil.h"
+
+#include "VideoBackends/D3D12/NativeVertexFormat.h"
+#include "VideoBackends/D3D12/VertexManager.h"
+
+namespace DX12
+{
+
+NativeVertexFormat* VertexManager::CreateNativeVertexFormat(const PortableVertexDeclaration& vtx_decl)
+{
+	return new D3DVertexFormat(vtx_decl);
+}
+
+static const constexpr DXGI_FORMAT d3d_format_lookup[5*4*2] =
+{
+	// float formats
+	DXGI_FORMAT_R8_UNORM, DXGI_FORMAT_R8_SNORM, DXGI_FORMAT_R16_UNORM, DXGI_FORMAT_R16_SNORM, DXGI_FORMAT_R32_FLOAT,
+	DXGI_FORMAT_R8G8_UNORM, DXGI_FORMAT_R8G8_SNORM, DXGI_FORMAT_R16G16_UNORM, DXGI_FORMAT_R16G16_SNORM, DXGI_FORMAT_R32G32_FLOAT,
+	DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_R32G32B32_FLOAT,
+	DXGI_FORMAT_R8G8B8A8_UNORM, DXGI_FORMAT_R8G8B8A8_SNORM, DXGI_FORMAT_R16G16B16A16_UNORM, DXGI_FORMAT_R16G16B16A16_SNORM, DXGI_FORMAT_R32G32B32A32_FLOAT,
+
+	// integer formats
+	DXGI_FORMAT_R8_UINT, DXGI_FORMAT_R8_SINT, DXGI_FORMAT_R16_UINT, DXGI_FORMAT_R16_SINT, DXGI_FORMAT_UNKNOWN,
+	DXGI_FORMAT_R8G8_UINT, DXGI_FORMAT_R8G8_SINT, DXGI_FORMAT_R16G16_UINT, DXGI_FORMAT_R16G16_SINT, DXGI_FORMAT_UNKNOWN,
+	DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN, DXGI_FORMAT_UNKNOWN,
+	DXGI_FORMAT_R8G8B8A8_UINT, DXGI_FORMAT_R8G8B8A8_SINT, DXGI_FORMAT_R16G16B16A16_UINT, DXGI_FORMAT_R16G16B16A16_SINT, DXGI_FORMAT_UNKNOWN,
+};
+
+DXGI_FORMAT VarToD3D(VarType t, int size, bool integer)
+{
+	DXGI_FORMAT retval = d3d_format_lookup[static_cast<int>(t) + 5 * (size-1) + 5 * 4 * static_cast<int>(integer)];
+	if (retval == DXGI_FORMAT_UNKNOWN)
+	{
+		PanicAlert("VarToD3D: Invalid type/size combo %i , %i, %i", static_cast<int>(t), size, static_cast<int>(integer));
+	}
+	return retval;
+}
+
+D3DVertexFormat::D3DVertexFormat(const PortableVertexDeclaration &vtx_decl)
+	: m_num_elems(0), m_layout12({}), m_elems()
+{
+	this->vtx_decl = vtx_decl;
+
+	AddInputElementDescFromAttributeFormatIfValid(&vtx_decl.position, "POSITION", 0);
+
+	for (int i = 0; i < 3; i++)
+	{
+		AddInputElementDescFromAttributeFormatIfValid(&vtx_decl.normals[i], "NORMAL", i);
+	}
+
+	for (int i = 0; i < 2; i++)
+	{
+		AddInputElementDescFromAttributeFormatIfValid(&vtx_decl.colors[i], "COLOR", i);
+	}
+
+	for (int i = 0; i < 8; i++)
+	{
+		AddInputElementDescFromAttributeFormatIfValid(&vtx_decl.texcoords[i], "TEXCOORD", i);
+	}
+
+	AddInputElementDescFromAttributeFormatIfValid(&vtx_decl.posmtx, "BLENDINDICES", 0);
+
+	m_layout12.NumElements = m_num_elems;
+	m_layout12.pInputElementDescs = m_elems.data();
+}
+
+D3DVertexFormat::~D3DVertexFormat()
+{
+}
+
+void D3DVertexFormat::AddInputElementDescFromAttributeFormatIfValid(const AttributeFormat* format, const char* semantic_name, unsigned int semantic_index)
+{
+	if (!format->enable)
+	{
+		return;
+	}
+
+	D3D12_INPUT_ELEMENT_DESC desc = {};
+
+	desc.AlignedByteOffset = format->offset;
+	desc.Format = VarToD3D(format->type, format->components, format->integer);
+	desc.InputSlot = 0;
+	desc.InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
+	desc.SemanticName = semantic_name;
+	desc.SemanticIndex = semantic_index;
+
+	m_elems[m_num_elems] = desc;
+	++m_num_elems;
+}
+
+void D3DVertexFormat::SetupVertexPointers()
+{
+	// No-op on DX12.
+}
+
+D3D12_INPUT_LAYOUT_DESC D3DVertexFormat::GetActiveInputLayout12() const
+{
+	return m_layout12;
+}
+
+
+} // namespace DX12