int
material_size(int prog) {
if (prog < 0 || prog >= MAX_PROGRAM)
return 0;
struct program *p = &RS->program[prog];
if (p->uniform_number == 0 && p->texture_number == 0) {
return 0;
}
struct uniform * lu = &p->uniform[p->uniform_number-1];
int total = lu->offset + shader_uniformsize(lu->type);
return sizeof(struct material) + (total-1) * sizeof(float);
}
void
shader_setuniform(int prog, int index, enum UNIFORM_FORMAT t, float *v) {
rs_commit();
struct program * p = &RS->program[prog];
assert(index >= 0 && index < p->uniform_number);
struct uniform *u = &p->uniform[index];
assert(t == u->type);
int n = shader_uniformsize(t);
memcpy(p->uniform_value + u->offset, v, n * sizeof(float));
p->reset_uniform = true;
p->uniform_change[index] = true;
}
int
material_setuniform(struct material *m, int index, int n, const float *v) {
struct program * p = m->p;
assert(index >= 0 && index < p->uniform_number);
struct uniform * u = &p->uniform[index];
if (shader_uniformsize(u->type) != n) {
return 1;
}
memcpy(m->uniform + u->offset, v, n * sizeof(float));
m->uniform_enable[index] = true;
return 0;
}
int
shader_adduniform(int prog, const char * name, enum UNIFORM_FORMAT t) {
// reset current_program
assert(prog >=0 && prog < MAX_PROGRAM);
shader_program(prog, NULL);
struct program * p = &RS->program[prog];
assert(p->uniform_number < MAX_UNIFORM);
int loc = render_shader_locuniform(RS->R, name);
int index = p->uniform_number++;
struct uniform * u = &p->uniform[index];
u->loc = loc;
u->type = t;
if (index == 0) {
u->offset = 0;
} else {
struct uniform * lu = &p->uniform[index-1];
u->offset = lu->offset + shader_uniformsize(lu->type);
}
if (loc < 0)
return -1;
return index;
}