ThermalVolume.h

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#pragma once
#include <glad/glad.h>
 
namespace Renderer {
 
class ThermalVolume {
public:
    unsigned int ID;
    int iSizeX, iSizeY, iSizeZ;
 
    ThermalVolume(int iWidth, int iHeight, int iDepth)
        : iSizeX(iWidth), iSizeY(iHeight), iSizeZ(iDepth) {
        glCreateTextures(GL_TEXTURE_3D, 1, &ID);
        glTextureParameteri(ID, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        glTextureParameteri(ID, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        glTextureParameteri(ID, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
        glTextureParameteri(ID, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        glTextureParameteri(ID, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
        glTextureStorage3D(ID, 1, GL_R32F, iSizeX, iSizeY, iSizeZ);
    }
 
    ~ThermalVolume() { glDeleteTextures(1, &ID); }
 
    ThermalVolume(const ThermalVolume& obj) = delete;
    ThermalVolume& operator=(const ThermalVolume&) = delete;
 
    void Update(const float* pfData) const {
        glTextureSubImage3D(ID, 0, 0, 0, 0, iSizeX, iSizeY, iSizeZ, GL_RED, GL_FLOAT, pfData);
    }
 
    void Bind(unsigned int iSlot) const { glBindTextureUnit(iSlot, ID); }
};
 
}  // namespace Renderer