From f54370de7e4214cb7813d26b1a39a8f6e42b7b56 Mon Sep 17 00:00:00 2001
From: hnOsmium0001 <hn.osmium0001@gmail.com>
Date: Mon, 25 Apr 2022 20:22:07 -0700
Subject: Initial work on rendering sprites to screen

---
 source/Mesh.hpp | 98 ++++++++++++++++++---------------------------------------
 1 file changed, 30 insertions(+), 68 deletions(-)

(limited to 'source/Mesh.hpp')

diff --git a/source/Mesh.hpp b/source/Mesh.hpp
index bc755a3..f86fd55 100644
--- a/source/Mesh.hpp
+++ b/source/Mesh.hpp
@@ -1,83 +1,45 @@
 #pragma once
 
-#include "GraphicsTags.hpp"
+#include "Color.hpp"
+#include "VertexIndex.hpp"
+#include "PodVector.hpp"
 #include "RcPtr.hpp"
-#include "SmallVector.hpp"
 
-#include <glad/glad.h>
 #include <cstddef>
 #include <cstdint>
-#include <vector>
+#include <glm/glm.hpp>
+#include <memory>
 
-struct GpuVertexBuffer : public RefCounted {
-	GLuint handle;
-	int sizeInBytes;
-
-	GpuVertexBuffer();
-	~GpuVertexBuffer();
-
-	void Upload(const std::byte* data, size_t sizeInBytes);
+struct StandardVertexExtra {
+	float u, v;
+	uint8_t r, g, b, a;
 };
 
-struct GpuIndexBuffer : public RefCounted {
-	GLuint handle;
-	Tags::IndexType indexType;
-	int sizeInBytes;
-
-	GpuIndexBuffer();
-	~GpuIndexBuffer();
-
-	void Upload(const std::byte* data, size_t count);
-	void Upload(const std::byte* data, Tags::IndexType type, size_t count);
-};
-
-struct BufferBindings {
-	SmallVector<RcPtr<GpuVertexBuffer>, 4> bindings;
-
-	int GetMaxBindingIndex() const;
-
-	/// Safe. Returns nullptr if the index is not bound to any buffers.
-	GpuVertexBuffer* GetBinding(int index) const;
-	/// Adds or updates a buffer binding. Setting a binding to nullptr effectively removes the binding.
-	void SetBinding(int index, GpuVertexBuffer* buffer);
-	void Clear();
-};
-
-struct VertexElementFormat {
-	/// NOTE:
-	/// "Automatic" means it will be set inside VertexFormat::AddElement()
-	/// "Parameter" means it must be set by the user
-	/* Automatic */ int offset;
-	/* Parameter */ int bindingIndex;
-	/* Parameter */ Tags::VertexElementType type;
-	/* Parameter */ Tags::VertexElementSemantic semantic;
-
-	int GetStride() const;
-};
-
-struct VertexFormat : public RefCounted {
-	std::vector<VertexElementFormat> elements;
-	int vertexSize = 0;
-
-	const std::vector<VertexElementFormat>& GetElements() { return elements; }
-	void AddElement(VertexElementFormat element);
-	void RemoveElement(int index);
+class StandardCpuMeshData {
+public:
+	PodVector<glm::vec3> vertPositions;
+	PodVector<StandardVertexExtra> vertExtra;
+	PodVector<uint32_t> index;
+	size_t vertexCount;
+	size_t triangleCount;
 };
 
-// Initialized in main()
-inline RcPtr<VertexFormat> gVformatStandard{};
-inline RcPtr<VertexFormat> gVformatStandardPacked{};
+class StandardCpuMesh {
+// private:
+// 	StandardCpuMeshData* mData = nullptr;
+// 	RcPtr<GpuMesh> mGpuMesh;
 
-// TODO handle immutability
-class GpuMesh : public RefCounted {
-public:
-	RcPtr<VertexFormat> vertFormat;
-	BufferBindings vertBufBindings;
-	RcPtr<GpuIndexBuffer> indexBuf;
+// public:
+// 	StandardCpuMesh();
+// 	~StandardCpuMesh();
 
-public:
-	GpuMesh();
-	~GpuMesh();
+// 	GpuVertexBuffer* GetPosBuffer() const;
+// 	GpuVertexBuffer* GetExtraBuffer() const;
+// 	GpuMesh* GetGpuMesh() const { return mGpuMesh.Get(); }
 
-	bool IsEmpty() const;
+// 	void CreateCpuData();
+// 	bool UpdatePositions(glm::vec3* pos, size_t count, size_t startVertIndex);
+// 	bool UpdateColors(RgbaColor* color, size_t count, size_t starVertIndex);
+// 	bool UpdateNormals(glm::vec2* normals, size_t count, size_t startVertIndex);
+// 	bool UpdateIndices(uint32_t* indices, size_t count, size_t startVertIndex);
 };
-- 
cgit v1.2.3-70-g09d2