static void material_generate_programs(material* m) {
for(int i = 0; i < m->num_entries; i++) {
material_entry* me = m->entries[i];
me->program = shader_program_new();
bool attached = false;
for(int j = 0; j < me->num_items; j++) {
if (me->types[j] == mat_item_shader) {
asset_hndl ah = me->items[j].as_asset;
shader_program_attach_shader(me->program, asset_hndl_ptr(&ah));
attached = true;
}
}
if (attached) { shader_program_link(me->program); }
}
SDL_GL_CheckError();
}
int init_shader(void)
{
// открываем файл шейдера из буфера
if(!shader_program_file_create_from_buffer(&pfile, main_shader_source))
return 0;
// получаем шейдерную программу
shader_program_file_get_program(&pfile, &program);
// линкуем её
if(!shader_program_link(&program))
return 0;
shader_program_bind(&program);
// получаем юниформы
uniform_modelmat = shader_program_get_uniform_loc(&program, "model");
uniform_viewmat = shader_program_get_uniform_loc(&program, "view");
uniform_projectionmat = shader_program_get_uniform_loc(&program, "projection");
uniform_model_inv = shader_program_get_uniform_loc(&program, "model_inv");
uniform_light_pos = shader_program_get_uniform_loc(&program, "light_position");
uniform_viewer_pos = shader_program_get_uniform_loc(&program, "viewer_position");
uniform_volume_texture = shader_program_get_uniform_loc(&program, "volume_texture");
uniform_volume_step = shader_program_get_uniform_loc(&program, "volume_step");
uniform_material_front_color = shader_program_get_uniform_loc(&program, "material_front_color");
uniform_material_back_color = shader_program_get_uniform_loc(&program, "material_back_color");
uniform_light_color = shader_program_get_uniform_loc(&program, "light_color");
uniform_light_spec_color = shader_program_get_uniform_loc(&program, "light_spec_color");
uniform_material_shininess = shader_program_get_uniform_loc(&program, "material_shininess");
uniform_coef_ambient = shader_program_get_uniform_loc(&program, "coef_ambient");
uniform_coef_diffuse = shader_program_get_uniform_loc(&program, "coef_diffuse");
uniform_coef_specular = shader_program_get_uniform_loc(&program, "coef_specular");
uniform_coef_gamma = shader_program_get_uniform_loc(&program, "coef_gamma");
shader_program_unbind(&program);
return 1;
}
shader_program* prog_load_file(char* filename) {
shader_program* sp = shader_program_new();
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
char type[256];
char path[1024];
if (sscanf(line, "%256s : %1024s", type, path) == 2) {
if(!asset_loaded(path)) {
load_file(path);
}
shader* s = asset_get(path);
shader_program_attach_shader(sp, s);
}
}
SDL_RWclose(file);
shader_program_link(sp);
shader_program_print_log(sp);
int error = 0;
glGetProgramiv(*sp, GL_LINK_STATUS, &error);
if (error == GL_FALSE) {
error("Linking Error on Shader Program %s.", filename);
}
return sp;
}