Merge pull request #10781 from tellowkrinkle/UberVertexLoader

VideoCommon: Add dynamic vertex loader for ubershaders to reduce pipeline count

1 files changed, 35 insertions, 6 deletions

diff --git a/Source/Core/VideoCommon/VertexShaderManager.cpp b/Source/Core/VideoCommon/VertexShaderManager.cpp
index ce43235977..b74c820271 100644
--- a/Source/Core/VideoCommon/VertexShaderManager.cpp
+++ b/Source/Core/VideoCommon/VertexShaderManager.cpp
@@ -606,13 +606,42 @@ void VertexShaderManager::SetMaterialColorChanged(int index)
   nMaterialsChanged[index] = true;
 }
 
-void VertexShaderManager::SetVertexFormat(u32 components)
+static void UpdateValue(bool* dirty, u32* old_value, u32 new_value)
 {
-  if (components != constants.components)
-  {
-    constants.components = components;
-    dirty = true;
-  }
+  if (*old_value == new_value)
+    return;
+  *old_value = new_value;
+  *dirty = true;
+}
+
+static void UpdateOffset(bool* dirty, bool include_components, u32* old_value,
+                         const AttributeFormat& attribute)
+{
+  if (!attribute.enable)
+    return;
+  u32 new_value = attribute.offset / 4;  // GPU uses uint offsets
+  if (include_components)
+    new_value |= attribute.components << 16;
+  UpdateValue(dirty, old_value, new_value);
+}
+
+template <size_t N>
+static void UpdateOffsets(bool* dirty, bool include_components, std::array<u32, N>* old_value,
+                          const std::array<AttributeFormat, N>& attribute)
+{
+  for (size_t i = 0; i < N; i++)
+    UpdateOffset(dirty, include_components, &(*old_value)[i], attribute[i]);
+}
+
+void VertexShaderManager::SetVertexFormat(u32 components, const PortableVertexDeclaration& format)
+{
+  UpdateValue(&dirty, &constants.components, components);
+  UpdateValue(&dirty, &constants.vertex_stride, format.stride / 4);
+  UpdateOffset(&dirty, true, &constants.vertex_offset_position, format.position);
+  UpdateOffset(&dirty, false, &constants.vertex_offset_posmtx, format.posmtx);
+  UpdateOffsets(&dirty, true, &constants.vertex_offset_texcoords, format.texcoords);
+  UpdateOffsets(&dirty, false, &constants.vertex_offset_colors, format.colors);
+  UpdateOffsets(&dirty, false, &constants.vertex_offset_normals, format.normals);
 }
 
 void VertexShaderManager::SetTexMatrixInfoChanged(int index)