set_uniform_int(glsl_program_num, prefix, "num_samples", src_bilinear_samples);
set_uniform_float(glsl_program_num, prefix, "num_loops", num_loops);
set_uniform_float(glsl_program_num, prefix, "slice_height", slice_height);
set_uniform_int(glsl_program_num, prefix, "num_samples", src_bilinear_samples);
set_uniform_float(glsl_program_num, prefix, "num_loops", num_loops);
set_uniform_float(glsl_program_num, prefix, "slice_height", slice_height);