terravisor/source/load_texture.cpp

38 lines
1.2 KiB
C++

#include "load_texture.h"
#include <iostream>
#include <FreeImage.h>
namespace Texture {
GLuint LoadTexture(const char* filePath) {
FIBITMAP* bitmap = FreeImage_Load(FIF_TIFF, filePath, TIFF_DEFAULT);
if(!bitmap) {
std::cerr << "Failed to load TIFF image: " << filePath << std::endl;
}
FIBITMAP* bitmap32 = FreeImage_ConvertTo32Bits(bitmap);
FreeImage_Unload(bitmap);
int width = FreeImage_GetWidth(bitmap32);
int height = FreeImage_GetHeight(bitmap32);
BYTE* pixels = FreeImage_GetBits(bitmap32);
GLuint textureID;
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glBindTexture(GL_TEXTURE_2D, 0);
FreeImage_Unload(bitmap32);
return textureID;
}
}