From 6470789977ebd50245bf03d4e9b39c5c2a25113a Mon Sep 17 00:00:00 2001
From: David Hackbarth <david@lyrebird-studio.com>
Date: Wed, 12 Nov 2025 13:49:37 +0100
Subject: [PATCH] add vertex color add time calculation

---
 GDP/D3D9/Mesh.cpp | 16 ++++++++--------
 GDP/D3D9/Vertex.h |  9 ++++++---
 GDP/D3D9/main.cpp |  1 +
 3 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/GDP/D3D9/Mesh.cpp b/GDP/D3D9/Mesh.cpp
index 6e82147..e365f17 100644
--- a/GDP/D3D9/Mesh.cpp
+++ b/GDP/D3D9/Mesh.cpp
@@ -130,16 +130,16 @@ UINT Mesh::createVertexBuffer(IDirect3DDevice9* pD3DDevice)
 
     // cube
     // front
-    pVertices[0] = Vertex(-0.5f, 0.5f, -0.5f);
-    pVertices[1] = Vertex(0.5f, 0.5f, -0.5f);
-    pVertices[2] = Vertex(0.5f, -0.5f, -0.5f);
-    pVertices[3] = Vertex(-0.5f, -0.5f, -0.5f);
+    pVertices[0] = Vertex(-0.5f, 0.5f, -0.5f, 255, 0, 0);
+    pVertices[1] = Vertex(0.5f, 0.5f, -0.5f, 0, 255, 0);
+    pVertices[2] = Vertex(0.5f, -0.5f, -0.5f, 0, 0, 255);
+    pVertices[3] = Vertex(-0.5f, -0.5f, -0.5f, 255, 0, 255);
 
     // back
-    pVertices[4] = Vertex(0.5f, 0.5f, 0.5f);
-    pVertices[5] = Vertex(-0.5f, 0.5f, 0.5f);
-    pVertices[6] = Vertex(-0.5f, -0.5f, 0.5f);
-    pVertices[7] = Vertex(0.5f, -0.5f, 0.5f);
+    pVertices[4] = Vertex(0.5f, 0.5f, 0.5f, 255, 255, 0);
+    pVertices[5] = Vertex(-0.5f, 0.5f, 0.5f, 0, 255, 255);
+    pVertices[6] = Vertex(-0.5f, -0.5f, 0.5f, 0, 0, 0);
+    pVertices[7] = Vertex(0.5f, -0.5f, 0.5f, 200, 200, 200);
 
     hr = _pVertexBuffer->Unlock();
     CheckFailed(hr, 320);
diff --git a/GDP/D3D9/Vertex.h b/GDP/D3D9/Vertex.h
index 2b87067..04f4bf6 100644
--- a/GDP/D3D9/Vertex.h
+++ b/GDP/D3D9/Vertex.h
@@ -1,7 +1,7 @@
 #pragma once
 #include <d3d9.h>
 
-#define FVF D3DFVF_XYZ
+#define FVF D3DFVF_XYZ | D3DFVF_DIFFUSE
 
 struct Vertex
 {
@@ -9,6 +9,9 @@ struct Vertex
 	FLOAT y;
 	FLOAT z;
 
-	Vertex() : x(0.0f), y(0.0f), z(0.0f) {}
-	Vertex(FLOAT _x, FLOAT _y, FLOAT _z) : x(_x), y(_y), z(_z) {}
+	D3DCOLOR color;
+
+	Vertex() : x(0.0f), y(0.0f), z(0.0f), color(0xFFFFFFFF) {}
+	Vertex(FLOAT _x, FLOAT _y, FLOAT _z) : x(_x), y(_y), z(_z), color(0xFFFFFFFF) {}
+	Vertex(FLOAT _x, FLOAT _y, FLOAT _z, UINT r, UINT g, UINT b) : x(_x), y(_y), z(_z), color(D3DCOLOR_XRGB(r, g, b)) {}
 };
\ No newline at end of file
diff --git a/GDP/D3D9/main.cpp b/GDP/D3D9/main.cpp
index d02d33a..e2dc330 100644
--- a/GDP/D3D9/main.cpp
+++ b/GDP/D3D9/main.cpp
@@ -34,6 +34,7 @@ int WINAPI WinMain(
 
 	// set render states
 	d3d.getDevice()->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
+	d3d.getDevice()->SetRenderState(D3DRS_LIGHTING, FALSE);
 
 	// 3. create a mesh
 	Mesh mesh = {};