Implement experimental Vulkan backend

1 files changed, 131 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/Vulkan/VertexFormat.cpp b/Source/Core/VideoBackends/Vulkan/VertexFormat.cpp
new file mode 100644
index 0000000000..27c1d06199
--- /dev/null
+++ b/Source/Core/VideoBackends/Vulkan/VertexFormat.cpp
@@ -0,0 +1,131 @@
+// Copyright 2016 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Common/Assert.h"
+
+#include "VideoBackends/Vulkan/CommandBufferManager.h"
+#include "VideoBackends/Vulkan/ObjectCache.h"
+#include "VideoBackends/Vulkan/VertexFormat.h"
+
+#include "VideoCommon/CPMemory.h"
+#include "VideoCommon/VertexLoaderManager.h"
+#include "VideoCommon/VertexShaderGen.h"
+
+namespace Vulkan
+{
+static VkFormat VarToVkFormat(VarType t, uint32_t components, bool integer)
+{
+  static const VkFormat float_type_lookup[][4] = {
+      {VK_FORMAT_R8_UNORM, VK_FORMAT_R8G8_UNORM, VK_FORMAT_R8G8B8_UNORM,
+       VK_FORMAT_R8G8B8A8_UNORM},  // VAR_UNSIGNED_BYTE
+      {VK_FORMAT_R8_SNORM, VK_FORMAT_R8G8_SNORM, VK_FORMAT_R8G8B8_SNORM,
+       VK_FORMAT_R8G8B8A8_SNORM},  // VAR_BYTE
+      {VK_FORMAT_R16_UNORM, VK_FORMAT_R16G16_UNORM, VK_FORMAT_R16G16B16_UNORM,
+       VK_FORMAT_R16G16B16A16_UNORM},  // VAR_UNSIGNED_SHORT
+      {VK_FORMAT_R16_SNORM, VK_FORMAT_R16G16_SNORM, VK_FORMAT_R16G16B16_SNORM,
+       VK_FORMAT_R16G16B16A16_SNORM},  // VAR_SHORT
+      {VK_FORMAT_R32_SFLOAT, VK_FORMAT_R32G32_SFLOAT, VK_FORMAT_R32G32B32_SFLOAT,
+       VK_FORMAT_R32G32B32A32_SFLOAT}  // VAR_FLOAT
+  };
+
+  static const VkFormat integer_type_lookup[][4] = {
+      {VK_FORMAT_R8_UINT, VK_FORMAT_R8G8_UINT, VK_FORMAT_R8G8B8_UINT,
+       VK_FORMAT_R8G8B8A8_UINT},  // VAR_UNSIGNED_BYTE
+      {VK_FORMAT_R8_SINT, VK_FORMAT_R8G8_SINT, VK_FORMAT_R8G8B8_SINT,
+       VK_FORMAT_R8G8B8A8_SINT},  // VAR_BYTE
+      {VK_FORMAT_R16_UINT, VK_FORMAT_R16G16_UINT, VK_FORMAT_R16G16B16_UINT,
+       VK_FORMAT_R16G16B16A16_UINT},  // VAR_UNSIGNED_SHORT
+      {VK_FORMAT_R16_SINT, VK_FORMAT_R16G16_SINT, VK_FORMAT_R16G16B16_SINT,
+       VK_FORMAT_R16G16B16A16_SINT},  // VAR_SHORT
+      {VK_FORMAT_R32_SFLOAT, VK_FORMAT_R32G32_SFLOAT, VK_FORMAT_R32G32B32_SFLOAT,
+       VK_FORMAT_R32G32B32A32_SFLOAT}  // VAR_FLOAT
+  };
+
+  _assert_(components > 0 && components <= 4);
+  return integer ? integer_type_lookup[t][components - 1] : float_type_lookup[t][components - 1];
+}
+
+VertexFormat::VertexFormat(const PortableVertexDeclaration& in_vtx_decl)
+{
+  vtx_decl = in_vtx_decl;
+  MapAttributes();
+  SetupInputState();
+}
+
+void VertexFormat::MapAttributes()
+{
+  m_num_attributes = 0;
+
+  if (vtx_decl.position.enable)
+    AddAttribute(SHADER_POSITION_ATTRIB, 0,
+                 VarToVkFormat(vtx_decl.position.type, vtx_decl.position.components,
+                               vtx_decl.position.integer),
+                 vtx_decl.position.offset);
+
+  for (uint32_t i = 0; i < 3; i++)
+  {
+    if (vtx_decl.normals[i].enable)
+      AddAttribute(SHADER_NORM0_ATTRIB + i, 0,
+                   VarToVkFormat(vtx_decl.normals[i].type, vtx_decl.normals[i].components,
+                                 vtx_decl.normals[i].integer),
+                   vtx_decl.normals[i].offset);
+  }
+
+  for (uint32_t i = 0; i < 2; i++)
+  {
+    if (vtx_decl.colors[i].enable)
+      AddAttribute(SHADER_COLOR0_ATTRIB + i, 0,
+                   VarToVkFormat(vtx_decl.colors[i].type, vtx_decl.colors[i].components,
+                                 vtx_decl.colors[i].integer),
+                   vtx_decl.colors[i].offset);
+  }
+
+  for (uint32_t i = 0; i < 8; i++)
+  {
+    if (vtx_decl.texcoords[i].enable)
+      AddAttribute(SHADER_TEXTURE0_ATTRIB + i, 0,
+                   VarToVkFormat(vtx_decl.texcoords[i].type, vtx_decl.texcoords[i].components,
+                                 vtx_decl.texcoords[i].integer),
+                   vtx_decl.texcoords[i].offset);
+  }
+
+  if (vtx_decl.posmtx.enable)
+    AddAttribute(
+        SHADER_POSMTX_ATTRIB, 0,
+        VarToVkFormat(vtx_decl.posmtx.type, vtx_decl.posmtx.components, vtx_decl.posmtx.integer),
+        vtx_decl.posmtx.offset);
+}
+
+void VertexFormat::SetupInputState()
+{
+  m_binding_description.binding = 0;
+  m_binding_description.stride = vtx_decl.stride;
+  m_binding_description.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+  m_input_state_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+  m_input_state_info.pNext = nullptr;
+  m_input_state_info.flags = 0;
+  m_input_state_info.vertexBindingDescriptionCount = 1;
+  m_input_state_info.pVertexBindingDescriptions = &m_binding_description;
+  m_input_state_info.vertexAttributeDescriptionCount = m_num_attributes;
+  m_input_state_info.pVertexAttributeDescriptions = m_attribute_descriptions.data();
+}
+
+void VertexFormat::AddAttribute(uint32_t location, uint32_t binding, VkFormat format,
+                                uint32_t offset)
+{
+  _assert_(m_num_attributes < MAX_VERTEX_ATTRIBUTES);
+
+  m_attribute_descriptions[m_num_attributes].location = location;
+  m_attribute_descriptions[m_num_attributes].binding = binding;
+  m_attribute_descriptions[m_num_attributes].format = format;
+  m_attribute_descriptions[m_num_attributes].offset = offset;
+  m_num_attributes++;
+}
+
+void VertexFormat::SetupVertexPointers()
+{
+}
+
+}  // namespace Vulkan