154 lines
2.8 KiB
C++
154 lines
2.8 KiB
C++
#pragma once
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#include <hpr/containers.hpp>
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#include <string>
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#ifndef __gl_h_
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#include <glad/glad.h>
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#endif
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namespace hpr::gpu
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{
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class BufferObject
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{
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public:
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enum Type
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{
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Vertex = 0x8892, // GL_ARRAY_BUFFER,
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Index = 0x8893, // GL_ELEMENT_ARRAY_BUFFER,
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Uniform = 0x8A11, // GL_UNIFORM_BUFFER,
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Unknown = -1
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};
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protected:
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Type p_type;
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unsigned int p_index;
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int p_size;
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unsigned int p_offset;
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bool p_binded;
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public:
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inline
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BufferObject() :
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p_type {Type::Unknown},
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p_index {0},
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p_size {0},
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p_offset {0},
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p_binded {false}
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{}
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explicit inline
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BufferObject(Type type) :
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p_type {type},
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p_index {0},
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p_size {0},
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p_offset {0},
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p_binded {false}
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{}
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virtual
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~BufferObject() = default;
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[[nodiscard]]
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int size() const
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{
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return p_size;
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}
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[[nodiscard]]
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Type type() const
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{
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return p_type;
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}
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[[nodiscard]]
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unsigned int index() const
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{
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return p_index;
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}
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[[nodiscard]]
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unsigned int offset() const
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{
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return p_offset;
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}
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void bind()
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{
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glBindBuffer((GLenum)p_type, p_index);
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p_binded = true;
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}
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void unbind()
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{
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glBindBuffer((GLenum)p_type, 0);
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p_binded = false;
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}
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[[nodiscard]]
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bool binded() const
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{
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return p_binded;
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}
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template <typename T>
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void create(const darray<T>& data, unsigned int offset = 0)
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{
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if (p_type == Type::Unknown)
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throw std::runtime_error("Unknown buffer type");
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unsigned int drawType;
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if (p_type == Type::Uniform)
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drawType = GL_DYNAMIC_DRAW;
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else
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drawType = GL_STATIC_DRAW;
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glGenBuffers(1, &p_index);
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bind();
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glBufferData(static_cast<GLenum>(p_type), sizeof(T) * data.size(), data.data(), drawType);
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unbind();
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p_offset = offset;
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p_size = data.size();
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}
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template <typename T>
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void edit(const darray<T>& data, unsigned int offset = 0)
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{
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if (p_type == Type::Unknown)
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throw std::runtime_error("Unknown buffer type");
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bind();
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glBufferSubData(p_type, offset, sizeof(T) * data.size(), data.data());
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unbind();
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p_offset = offset;
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p_size = data.size();
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}
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void destroy()
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{
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if (p_type == Type::Unknown)
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throw std::runtime_error("Unknown buffer type");
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glDeleteBuffers(1, &p_index);
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p_index = 0;
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}
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[[nodiscard]]
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inline
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bool valid() const
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{
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return p_index > 0;
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}
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};
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} |