From b4d63e919e56b8939cad8a8ca6809c2e9c453e85 Mon Sep 17 00:00:00 2001
From: Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
Date: Fri, 19 Jan 2018 02:58:57 +0100
Subject: [PATCH] gs-vertex: Allocate memory if none is assigned

Allows code to directly use GS::Vertex for their own purposes without having to rely on GS::VertexBuffer, which comes with the added overhead of allocating GPU memory.
---
 source/gs-vertex.cpp | 28 ++++++++++++++++++++++++++++
 source/gs-vertex.h   |  8 ++++++++
 2 files changed, 36 insertions(+)

diff --git a/source/gs-vertex.cpp b/source/gs-vertex.cpp
index 271e79a3..82463256 100644
--- a/source/gs-vertex.cpp
+++ b/source/gs-vertex.cpp
@@ -18,3 +18,31 @@
  */
 
 #include "gs-vertex.h"
+#include "util-memory.h"
+
+GS::Vertex::Vertex() {
+	this->hasStore = true;
+	this->store = util::malloc_aligned(16, sizeof(vec3) * 3 + sizeof(uint32_t) + sizeof(vec4)*MAXIMUM_UVW_LAYERS);
+	this->position = reinterpret_cast<vec3*>(store);
+	this->normal = reinterpret_cast<vec3*>(reinterpret_cast<char*>(store) + (16 * 1));
+	this->tangent = reinterpret_cast<vec3*>(reinterpret_cast<char*>(store) + (16 * 2));
+	for (size_t n = 0; n < MAXIMUM_UVW_LAYERS; n++) {
+		this->uv[n] = reinterpret_cast<vec4*>(reinterpret_cast<char*>(store) + (16 * (2 + n)));
+	}
+	this->color = reinterpret_cast<uint32_t*>(reinterpret_cast<char*>(store) + (16 * (3 + MAXIMUM_UVW_LAYERS)));
+}
+
+GS::Vertex::~Vertex() {
+	if (hasStore)
+		util::free_aligned(store);
+}
+
+GS::Vertex::Vertex(vec3* p, vec3* n, vec3* t, uint32_t* col, vec4* uvs[MAXIMUM_UVW_LAYERS])
+	: position(p), normal(n), tangent(t), color(col) {
+	if (uvs != nullptr) {
+		for (size_t idx = 0; idx < MAXIMUM_UVW_LAYERS; idx++) {
+			this->uv[idx] = uvs[idx];
+		}
+	}
+	this->hasStore = false;
+}
diff --git a/source/gs-vertex.h b/source/gs-vertex.h
index 88c7ea97..77e37834 100644
--- a/source/gs-vertex.h
+++ b/source/gs-vertex.h
@@ -35,5 +35,13 @@ namespace GS {
 		vec3* tangent;
 		uint32_t* color;
 		vec4* uv[MAXIMUM_UVW_LAYERS];
+
+		Vertex();
+		Vertex(vec3* p, vec3* n, vec3* t, uint32_t* col, vec4* uv[MAXIMUM_UVW_LAYERS]);
+		~Vertex();
+
+		private:
+		bool hasStore;
+		void* store;
 	};
 }