texture.cpp

#include "texture.h"
#include "ressources/stb_image/stb_image.h"
#include <renderer.h>

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(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(glBindTexture(GL_TEXTURE_2D,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() const
{
    GLCall(glBindTexture(GL_TEXTURE_2D,0));
}