From 03136cdd9e4df8ccc21c3fae932281a2d202540e Mon Sep 17 00:00:00 2001
From: Brett Laptop <tri11paragon@tpgc.me>
Date: Sun, 8 Jun 2025 22:02:21 -0400
Subject: [PATCH] more files

---
 .idea/editor.xml |   3 -
 CMakeLists.txt   |   2 +-
 include/vao.h    |  60 +++++++++++++++++++
 include/vbo.h    | 147 +++++++++++++++++++++++++++++++++++++++++++++++
 src/main.cpp     | 119 +-------------------------------------
 src/vao.cpp      |  23 ++++++++
 src/vbo.cpp      |  73 +++++++++++++++++++++++
 7 files changed, 306 insertions(+), 121 deletions(-)
 create mode 100644 include/vao.h
 create mode 100644 include/vbo.h
 create mode 100644 src/vao.cpp
 create mode 100644 src/vbo.cpp

diff --git a/.idea/editor.xml b/.idea/editor.xml
index 907ea1b..5bf27ce 100644
--- a/.idea/editor.xml
+++ b/.idea/editor.xml
@@ -283,11 +283,8 @@
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/SPACE_AFTER_CAST_EXPRESSION_PARENTHESES/@EntryValue" value="true" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/TOPLEVEL_FUNCTION_DECLARATION_RETURN_TYPE_STYLE/@EntryValue" value="ON_SINGLE_LINE" type="string" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/TOPLEVEL_FUNCTION_DEFINITION_RETURN_TYPE_STYLE/@EntryValue" value="ON_SINGLE_LINE" type="string" />
-    <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_BRACED_INIT_LIST_STYLE/@EntryValue" value="CHOP_IF_LONG" type="string" />
     <option name="/Default/CodeStyle/CppIncludeDirective/SortIncludeDirectives/@EntryValue" value="true" type="bool" />
     <option name="/Default/CodeStyle/CppIncludeDirective/UseAngleBracketsInsteadOfQuotes/@EntryValue" value="WhenPossible" type="string" />
     <option name="/Default/CodeStyle/CppIncludeDirective/UseRelativePaths/@EntryValue" value="Never" type="string" />
-    <option name="/Default/CodeStyle/Generate/=CppDefinitions/@KeyIndexDefined" value="true" type="bool" />
-    <option name="/Default/CodeStyle/Generate/=CppDefinitions/Options/=GenerateInlineDefinitions/@EntryIndexedValue" value="False" type="string" />
   </component>
 </project>
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a0943e0..a12bd91 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.25)
-project(gpu-particles VERSION 0.0.9)
+project(gpu-particles VERSION 0.0.10)
 
 option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
 option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)
diff --git a/include/vao.h b/include/vao.h
new file mode 100644
index 0000000..3f249aa
--- /dev/null
+++ b/include/vao.h
@@ -0,0 +1,60 @@
+#pragma once
+/*
+ *  Copyright (C) 2024  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef BLT_GFX_VAO_H
+#define BLT_GFX_VAO_H
+
+#include <vbo.h>
+
+namespace blt::gfx
+{
+
+	class unique_vao_t
+	{
+	public:
+		unique_vao_t(): vaoID(0)
+		{
+			glGenVertexArrays(1, &*vaoID);
+		}
+
+		unique_vao_t(const unique_vao_t&) = delete;
+
+		unique_vao_t& operator=(const unique_vao_t&) = delete;
+
+		unique_vao_t(unique_vao_t&& other) noexcept: vaoID(std::exchange(other.vaoID, std::nullopt))
+		{}
+
+		unique_vao_t& operator=(unique_vao_t&& other) noexcept
+		{
+			vaoID = std::exchange(other.vaoID, vaoID);
+			return *this;
+		}
+
+		~unique_vao_t()
+		{
+			if (vaoID)
+				glDeleteVertexArrays(1, &*vaoID);
+		}
+
+	private:
+		std::optional<GLuint> vaoID;
+	};
+
+}
+
+#endif //BLT_GFX_VAO_H
diff --git a/include/vbo.h b/include/vbo.h
new file mode 100644
index 0000000..b7dcfa1
--- /dev/null
+++ b/include/vbo.h
@@ -0,0 +1,147 @@
+#pragma once
+/*
+ *  Copyright (C) 2024  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef BLT_GFX_VBO_H
+#define BLT_GFX_VBO_H
+
+#include <vbo.h>
+#include <vbo.h>
+#include <vbo.h>
+#include <blt/gfx/gl_includes.h>
+
+namespace blt::gfx
+{
+	class unique_vbo_t;
+
+	namespace detail
+	{
+		class vbo_context_t
+		{
+		public:
+			explicit vbo_context_t(unique_vbo_t& vbo): vbo(vbo)
+			{
+				bind();
+			}
+
+			/**
+			 * By default, the VBO is bound when this class is constructed (this class should only be constructed through the VBO bind() method)
+			 *
+			 * It is very unlikely that you need this method!
+			 */
+			vbo_context_t& bind();
+
+			vbo_context_t& unbind();
+
+			vbo_context_t& reserve(GLsizeiptr size, GLint mem_type);
+
+			vbo_context_t& reserve(const size_t size, const GLint mem_type)
+			{
+				return reserve(static_cast<GLsizeiptr>(size), mem_type);
+			}
+
+			vbo_context_t& upload(size_t size, void* ptr, GLint mem_type);
+
+			template <typename T>
+			vbo_context_t& upload(const size_t size, T* ptr, const GLint mem_type)
+			{
+				return upload(size, static_cast<void*>(ptr), mem_type);
+			}
+
+			vbo_context_t& update(size_t offset, size_t size, const void* ptr);
+
+			template <typename T>
+			vbo_context_t& update(size_t offset, const size_t size, T* ptr)
+			{
+				return upload(offset, size, static_cast<void*>(ptr));
+			}
+
+		private:
+			unique_vbo_t& vbo;
+		};
+	}
+
+	class unique_vbo_t
+	{
+		friend class detail::vbo_context_t;
+
+	public:
+		explicit unique_vbo_t(const GLuint type): buffer_type(type)
+		{
+			glGenBuffers(1, &*vboID);
+		}
+
+		unique_vbo_t(const unique_vbo_t&) = delete;
+
+		unique_vbo_t& operator=(const unique_vbo_t&) = delete;
+
+		unique_vbo_t(unique_vbo_t&& other) noexcept: vboID(std::exchange(other.vboID, std::nullopt)), buffer_type(other.buffer_type),
+													size(other.size), memory_type(other.memory_type)
+		{}
+
+		unique_vbo_t& operator=(unique_vbo_t&& other) noexcept
+		{
+			vboID = std::exchange(other.vboID, vboID);
+			buffer_type = std::exchange(other.buffer_type, buffer_type);
+			size = std::exchange(other.size, size);
+			memory_type = std::exchange(other.memory_type, memory_type);
+			return *this;
+		}
+
+		GLuint change_type(const GLuint type)
+		{
+			return std::exchange(this->buffer_type, type);
+		}
+
+		[[nodiscard]] auto bind();
+
+		~unique_vbo_t()
+		{
+			if (vboID)
+				glDeleteBuffers(1, &*vboID);
+		}
+
+	private:
+		std::optional<GLuint> vboID;
+		GLuint buffer_type;
+		GLsizeiptr size = 0;
+		GLint memory_type = 0;
+	};
+
+	class unique_ssbo_t : public unique_vbo_t
+	{
+	public:
+		unique_ssbo_t(): unique_vbo_t{GL_SHADER_STORAGE_BUFFER}
+		{}
+	};
+
+	class unique_ebo_t : public unique_vbo_t
+	{
+	public:
+		unique_ebo_t(): unique_vbo_t{GL_ELEMENT_ARRAY_BUFFER}
+		{}
+	};
+
+	class unique_ubo_t : public unique_vbo_t
+	{
+	public:
+		unique_ubo_t(): unique_vbo_t{GL_UNIFORM_BUFFER}
+		{}
+	};
+}
+
+#endif //BLT_GFX_VBO_H
diff --git a/src/main.cpp b/src/main.cpp
index 4d37469..ff36a8a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,7 +19,8 @@
 #include "blt/gfx/renderer/batch_2d_renderer.h"
 #include "blt/gfx/renderer/camera.h"
 #include <blt/std/random.h>
-#include <blt/debug.h>
+#include <vao.h>
+#include <vbo.h>
 #include <shaders/particle.frag>
 #include <shaders/particle.vert>
 #include <imgui.h>
@@ -34,122 +35,6 @@ blt::gfx::first_person_camera camera;
 
 // use types for state that way you are not confused about what is happening?
 
-class unique_vbo_t;
-
-namespace detail
-{
-	class vbo_context_t
-	{
-	public:
-		explicit vbo_context_t(unique_vbo_t& vbo): vbo(vbo)
-		{
-			bind();
-		}
-
-		/**
-		 * By default, the VBO is bound when this class is constructed (this class should only be constructed through the VBO bind() method)
-		 * This function is provided in case you need to rebind the VBO
-		 */
-		vbo_context_t& bind();
-
-		vbo_context_t& unbind();
-
-	private:
-		unique_vbo_t& vbo;
-	};
-}
-
-class unique_vbo_t
-{
-	friend class detail::vbo_context_t;
-
-public:
-	explicit unique_vbo_t(const GLuint type): type(type)
-	{
-		glGenBuffers(1, &*vboID);
-	}
-
-	unique_vbo_t(const unique_vbo_t&) = delete;
-
-	unique_vbo_t& operator=(const unique_vbo_t&) = delete;
-
-	unique_vbo_t(unique_vbo_t&& other) noexcept: vboID(std::exchange(other.vboID, std::nullopt)), type(other.type)
-	{}
-
-	unique_vbo_t& operator=(unique_vbo_t&& other) noexcept
-	{
-		vboID = std::exchange(other.vboID, vboID);
-		type = std::exchange(other.type, type);
-		return *this;
-	}
-
-	GLuint change_type(const GLuint type)
-	{
-		return std::exchange(this->type, type);
-	}
-
-	[[nodiscard]] auto bind()
-	{
-		return detail::vbo_context_t{*this};
-	}
-
-	~unique_vbo_t()
-	{
-		if (vboID)
-			glDeleteBuffers(1, &*vboID);
-	}
-
-private:
-	std::optional<GLuint> vboID;
-	GLuint type;
-};
-
-namespace detail
-{
-	vbo_context_t& vbo_context_t::bind()
-	{
-		glBindBuffer(vbo.type, *vbo.vboID);
-		return *this;
-	}
-
-	vbo_context_t& vbo_context_t::unbind()
-	{
-		glBindBuffer(vbo.type, 0);
-		return *this;
-	}
-}
-
-class unique_vao_t
-{
-public:
-	unique_vao_t(): vaoID(0)
-	{
-		glGenVertexArrays(1, &*vaoID);
-	}
-
-	unique_vao_t(const unique_vao_t&) = delete;
-
-	unique_vao_t& operator=(const unique_vao_t&) = delete;
-
-	unique_vao_t(unique_vao_t&& other) noexcept: vaoID(std::exchange(other.vaoID, std::nullopt))
-	{}
-
-	unique_vao_t& operator=(unique_vao_t&& other) noexcept
-	{
-		vaoID = std::exchange(other.vaoID, vaoID);
-		return *this;
-	}
-
-	~unique_vao_t()
-	{
-		if (vaoID)
-			glDeleteVertexArrays(1, &*vaoID);
-	}
-
-private:
-	std::optional<GLuint> vaoID;
-};
-
 struct particle_t
 {
 	blt::vec2 position;
diff --git a/src/vao.cpp b/src/vao.cpp
new file mode 100644
index 0000000..931cdeb
--- /dev/null
+++ b/src/vao.cpp
@@ -0,0 +1,23 @@
+/*
+ *  <Short Description>
+ *  Copyright (C) 2025  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <vao.h>
+
+namespace blt::gfx
+{
+
+}
\ No newline at end of file
diff --git a/src/vbo.cpp b/src/vbo.cpp
new file mode 100644
index 0000000..92c9822
--- /dev/null
+++ b/src/vbo.cpp
@@ -0,0 +1,73 @@
+/*
+ *  <Short Description>
+ *  Copyright (C) 2025  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <vbo.h>
+#include <blt/gfx/window.h>
+#include <blt/std/assert.h>
+
+namespace blt::gfx
+{
+	namespace detail
+	{
+		vbo_context_t& vbo_context_t::bind()
+		{
+			BLT_CONTRACT(vbo.vboID, "Expected VBO to have an assoicated VBO ID!");
+			glBindBuffer(vbo.type, *vbo.vboID);
+			return *this;
+		}
+
+		vbo_context_t& vbo_context_t::unbind()
+		{
+			glBindBuffer(vbo.type, 0);
+			return *this;
+		}
+
+		vbo_context_t& vbo_context_t::reserve(const GLsizeiptr size, const GLint mem_type)
+		{
+			vbo.size = size;
+			vbo.memory_type = mem_type;
+			glBufferData(vbo.buffer_type, size, nullptr, mem_type);
+			return *this;
+		}
+
+		vbo_context_t& vbo_context_t::upload(const size_t size, void* ptr, const GLint mem_type)
+		{
+			if (mem_type != vbo.memory_type || vbo.size < size)
+			{
+				vbo.size = static_cast<GLsizeiptr>(size);
+				vbo.memory_type = mem_type;
+				glBufferData(vbo.buffer_type, vbo.size, ptr, mem_type);
+			} else
+			{
+				update(0, size, ptr);
+			}
+			return *this;
+		}
+
+		vbo_context_t& vbo_context_t::update(const size_t offset, const size_t size, const void* ptr)
+		{
+			glBufferSubData(vbo.buffer_type, static_cast<GLsizeiptr>(offset), static_cast<GLsizeiptr>(size), ptr);
+			return *this;
+		}
+	}
+
+	auto unique_vbo_t::bind()
+	{
+		BLT_CONTRACT(glfwGetCurrentContext() != nullptr, "Expected active OpenGL context!");
+		return detail::vbo_context_t{*this};
+	}
+}