void render_sun_lamp(struct lamp *lamp, mat4 clip_from_view, mat4 view_from_world, mat4 lamp_transform)
{
static int prog = 0;
static int uni_viewport;
static int uni_lamp_direction;
static int uni_lamp_color;
static const vec3 lamp_direction_init = { 0, 0, 1 };
vec2 viewport;
vec3 lamp_direction_world;
vec3 lamp_direction_view;
vec3 lamp_direction;
vec3 lamp_color;
if (!prog) {
prog = compile_shader(quad_vert_src, sun_frag_src);
uni_viewport = glGetUniformLocation(prog, "viewport");
uni_lamp_direction = glGetUniformLocation(prog, "lamp_direction");
uni_lamp_color = glGetUniformLocation(prog, "lamp_color");
}
viewport[0] = fbo_w;
viewport[1] = fbo_h;
mat_vec_mul_n(lamp_direction_world, lamp_transform, lamp_direction_init);
mat_vec_mul_n(lamp_direction_view, view_from_world, lamp_direction_world);
vec_normalize(lamp_direction, lamp_direction_view);
vec_scale(lamp_color, lamp->color, lamp->energy);
glUseProgram(prog);
glUniform2fv(uni_viewport, 1, viewport);
glUniform3fv(uni_lamp_direction, 1, lamp_direction);
glUniform3fv(uni_lamp_color, 1, lamp_color);
draw_fullscreen_quad();
}
void
model_iqm_animate (struct iqm_model *model,
struct iqm_animations *animations,
int a,
int f,
float t)
{
int i;
a %= animations->num_anims;
f %= animations->anims[a]->count;
printf ("anim %d frame %d\n", a, f);
int *table = _match_bones (model, animations->anims[a]);
_get_delta (model, animations->anims[a], table, f);
if (model->dnorm == NULL) {
model->dnorm = malloc (model->num_vertices * 3 * sizeof(float));
}
if (model->dpos == NULL) {
model->dpos = malloc (model->num_vertices * 3 * sizeof(float));
}
for (i=0; i<model->num_vertices; i++) {
unsigned char *bi = &model->blend_index[i*4];
//unsigned char *bw = &model->blend_weight[i*4];
mat_vec_mul (model->dpos + i*3,
model->skeleton->bones[bi[0]].diff,
model->pos + i*3);
mat_vec_mul_n (model->dnorm + i*3,
model->skeleton->bones[bi[0]].diff,
model->norm + i*3);
}
}
void render_spot_lamp(struct lamp *lamp, mat4 clip_from_view, mat4 view_from_world, mat4 lamp_transform)
{
static int prog = 0;
static int uni_viewport;
static int uni_view_from_clip;
static int uni_lamp_position;
static int uni_lamp_direction;
static int uni_lamp_color;
static int uni_lamp_distance;
static int uni_spot_size;
static int uni_spot_blend;
static int uni_use_sphere;
static const vec3 lamp_direction_init = { 0, 0, 1 };
mat4 view_from_clip;
vec2 viewport;
vec3 lamp_position;
vec3 lamp_direction_world;
vec3 lamp_direction_view;
vec3 lamp_direction;
vec3 lamp_color;
float spot_size;
float spot_blend;
if (!prog) {
prog = compile_shader(quad_vert_src, spot_frag_src);
uni_viewport = glGetUniformLocation(prog, "viewport");
uni_view_from_clip = glGetUniformLocation(prog, "view_from_clip");
uni_lamp_position = glGetUniformLocation(prog, "lamp_position");
uni_lamp_direction = glGetUniformLocation(prog, "lamp_direction");
uni_lamp_color = glGetUniformLocation(prog, "lamp_color");
uni_lamp_distance = glGetUniformLocation(prog, "lamp_distance");
uni_spot_size = glGetUniformLocation(prog, "spot_size");
uni_spot_blend = glGetUniformLocation(prog, "spot_blend");
uni_use_sphere = glGetUniformLocation(prog, "use_sphere");
}
mat_invert(view_from_clip, clip_from_view);
viewport[0] = fbo_w;
viewport[1] = fbo_h;
mat_vec_mul(lamp_position, view_from_world, lamp_transform + 12);
mat_vec_mul_n(lamp_direction_world, lamp_transform, lamp_direction_init);
mat_vec_mul_n(lamp_direction_view, view_from_world, lamp_direction_world);
vec_normalize(lamp_direction, lamp_direction_view);
vec_scale(lamp_color, lamp->color, lamp->energy);
spot_size = cos(M_PI * lamp->spot_angle / 360.0);
spot_blend = (1.0 - spot_size) * lamp->spot_blend;
glUseProgram(prog);
glUniform2fv(uni_viewport, 1, viewport);
glUniformMatrix4fv(uni_view_from_clip, 1, 0, view_from_clip);
glUniform3fv(uni_lamp_position, 1, lamp_position);
glUniform3fv(uni_lamp_direction, 1, lamp_direction);
glUniform3fv(uni_lamp_color, 1, lamp_color);
glUniform1f(uni_lamp_distance, lamp->distance);
glUniform1f(uni_spot_size, spot_size);
glUniform1f(uni_spot_blend, spot_blend);
glUniform1i(uni_use_sphere, lamp->use_sphere);
draw_fullscreen_quad();
}
