//*****************************************************************************************************************************
int charger_skybox(int choix) {
int i;
MTEX *texture = (MTEX *)malloc(6*sizeof(MTEX));
textureBox = (GLuint *)malloc(6*sizeof(GLuint));
glGenTextures(6, textureBox);
if(choix == DAY) {
texture[0].filename = "img/light/XN.png";
texture[1].filename = "img/light/XP.png";
texture[2].filename = "img/light/YN.png";
texture[3].filename = "img/light/YP.png";
texture[4].filename = "img/light/ZN.png";
texture[5].filename = "img/light/ZP.png";
}
else if(choix == NIGHT) {
texture[0].filename = "img/dark/XN.png";
texture[1].filename = "img/dark/XP.png";
texture[2].filename = "img/dark/YN.png";
texture[3].filename = "img/dark/YP.png";
texture[4].filename = "img/dark/ZN.png";
texture[5].filename = "img/dark/ZP.png";
}
for(i = 0; i < 6; ++i) {
if(ReadPNGFromFile(&texture[i])) {
printf("Je n'arrive pas à lire %s\n", texture->filename);
return -1;
}
/* à compléter */
texture[i].glnum = textureBox[i];
glBindTexture(GL_TEXTURE_2D, texture[i].glnum);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexImage2D(GL_TEXTURE_2D, 0, texture[i].internalFormat,
texture[i].width, texture[i].height, 0, texture[i].format,
GL_UNSIGNED_BYTE, texture[i].texels);
}
free(texture);
return 0;
}
GLuint loadPNGCubeMap (const char *filename, int index) {
struct gl_texture_t *png_tex = NULL;
GLuint tex_id = 0;
png_tex = ReadPNGFromFile (filename);
if (png_tex && png_tex->texels)
{
/* Generate texture */
glGenTextures (1, &png_tex->id);
glBindTexture (GL_TEXTURE_CUBE_MAP_POSITIVE_X + index, png_tex->id);
/* Setup some parameters for texture filters and mipmapping */
glTexParameteri (GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri (GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
/* glTexImage2D (GL_TEXTURE_CUBE_MAP_POSITIVE_X + index, 0, png_tex->internalFormat,
png_tex->width, png_tex->height, 0, png_tex->format,
GL_UNSIGNED_BYTE, png_tex->texels);*/
gluBuild2DMipmaps (GL_TEXTURE_CUBE_MAP_POSITIVE_X + index, png_tex->internalFormat,
png_tex->width, png_tex->height,
png_tex->format, GL_UNSIGNED_BYTE, png_tex->texels);
tex_id = png_tex->id;
/* OpenGL has its own copy of texture data */
free (png_tex->texels);
free (png_tex);
printf("%s loaded successfully!\n", filename);
}
return tex_id;
}