break render apart into multiple files

vis/include/cgl/buffer.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <memory>
+
+#include <glad/glad.h>
+
+namespace cgl {
+    template<class T>
+    class buffer {
+        GLuint id{};
+
+    public:
+        buffer() {
+            glCreateBuffers(1, &id);
+        }
+
+        buffer(const T &data, GLenum usage = GL_STATIC_DRAW)
+            : buffer() {
+            put(data, usage);
+        }
+
+        buffer(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW)
+            : buffer() {
+            put(data, usage);
+        }
+
+        buffer(buffer &) = delete;
+
+        buffer(buffer &&o) noexcept {
+            id = std::exchange(o.id, 0);
+        };
+
+        ~buffer() {
+            glDeleteBuffers(1, &id);
+            id = 0;
+        }
+
+        operator GLuint() const {
+            return id;
+        }
+
+        [[nodiscard]] size_t size() const {
+            GLint res;
+            glGetNamedBufferParameteriv(id, GL_BUFFER_SIZE, &res);
+            return (size_t) res;
+        }
+
+        [[nodiscard]] size_t count() const {
+            return size() / sizeof(T);
+        }
+
+        void put(const T &data, GLenum usage = GL_STATIC_DRAW) {
+            glNamedBufferData(id, sizeof(T), &data, usage);
+        }
+
+        void put(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW) {
+            glNamedBufferData(id, sizeof(T) * data.size(), &data[0], usage);
+        }
+
+        void bound(GLenum target, const std::function<void()> &action) const {
+            glBindBuffer(target, id);
+            action();
+            glBindBuffer(target, 0);
+        }
+    };
+
+}