Texture.cpp

#include "Texture.h"
 
namespace Vivid
{
    Texture::Texture(const std::string& path)
        : m_RendererID(0)
        , m_FilePath(path)
        , m_LocalBuffer(nullptr)
        , m_Width(0)
        , m_Height(0)
        , m_BPP(0)
    {
        stbi_set_flip_vertically_on_load(0);
        stbi_set_flip_vertically_on_load_thread(0);
        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(glBindTexture(GL_TEXTURE_2D, 0));
 
        if (m_LocalBuffer)
        {
            stbi_image_free(m_LocalBuffer);
        }
 
        m_Name = "Texture" + std::to_string(m_RendererID);
    }
 
    Texture::Texture()
        : m_RendererID(0)
        , m_LocalBuffer(nullptr)
        , m_Width(0)
        , m_Height(0)
        , m_BPP(0)
    {
        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(glBindTexture(GL_TEXTURE_2D, 0));
    }
 
    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() const
    {
        GLCall(glBindTexture(GL_TEXTURE_2D, 0));
    }
 
}