Texture.cpp

#include "Texture.h"
#include "stb_image.h"

	Texture::Texture(const std::string& path)
		:m_FilePath(path), m_LocalBuffer(0), m_Width(0), m_Height(0), m_BPP(0)
	{
		stbi_set_flip_vertically_on_load(1);
		m_LocalBuffer = stbi_load(path.c_str(), &m_Width, &m_Height, &m_BPP, 4);

		GLCall(glGenTextures(1, &m_RendererID));
		GLCall(glBindTexture(GL_TEXTURE_2D, m_RendererID));

		GLCall(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
		GLCall(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
		GLCall(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
		GLCall(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));

		GLCall(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, m_Width, m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_LocalBuffer));
		GLCall(GL_TEXTURE_2D,glBindTexture(0));

		if (m_LocalBuffer)
		{
			stbi_image_free(m_LocalBuffer);
		}
	}
	Texture::~Texture()
	{
		GLCall(glDeleteTextures(1, &m_RendererID));
	}

	void Texture::Bind(unsigned int slot) const
	{
		GLCall(glActiveTexture(GL_TEXTURE0 + slot));
		GLCall(glBindTexture(GL_TEXTURE_2D, m_RendererID));

	}
	void Texture::Unbind()
	{
		GLCall(GL_TEXTURE_2D, glBindTexture(0));
	}