void game_draw(struct game_draw *gd, int pose, float t)
{
float fov = (float) config_get_d(CONFIG_VIEW_FOV);
if (gd->jump_b) fov *= 2.f * fabsf(gd->jump_dt - 0.5f);
if (gd->state)
{
const struct game_view *view = &gd->view;
struct s_rend rend;
gd->draw.shadow_ui = 0;
game_shadow_conf(pose, 1);
sol_draw_enable(&rend);
video_push_persp(fov, 0.1f, FAR_DIST);
glPushMatrix();
{
float T[16], U[16], M[16], v[3];
/* Compute direct and reflected view bases. */
v[0] = +view->p[0];
v[1] = -view->p[1];
v[2] = +view->p[2];
video_calc_view(T, view->c, view->p, view->e[1]);
video_calc_view(U, view->c, v, view->e[1]);
m_xps(M, T);
/* Apply the current view. */
v_sub(v, view->c, view->p);
glTranslatef(0.f, 0.f, -v_len(v));
glMultMatrixf(M);
glTranslatef(-view->c[0], -view->c[1], -view->c[2]);
/* Draw the background. */
game_draw_back(&rend, gd, pose, +1, t);
/* Draw the reflection. */
if (gd->draw.reflective && config_get_d(CONFIG_REFLECTION))
{
glEnable(GL_STENCIL_TEST);
{
/* Draw the mirrors only into the stencil buffer. */
glStencilFunc(GL_ALWAYS, 1, 0xFFFFFFFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glDepthMask(GL_FALSE);
game_refl_all(&rend, gd);
glDepthMask(GL_TRUE);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glStencilFunc(GL_EQUAL, 1, 0xFFFFFFFF);
/* Draw the scene reflected into color and depth buffers. */
glFrontFace(GL_CW);
glPushMatrix();
{
glScalef(+1.0f, -1.0f, +1.0f);
game_draw_light(gd, -1);
game_draw_back(&rend, gd, pose, -1, t);
game_draw_fore(&rend, gd, pose, U, -1, t);
}
glPopMatrix();
glFrontFace(GL_CCW);
glStencilFunc(GL_ALWAYS, 0, 0xFFFFFFFF);
}
glDisable(GL_STENCIL_TEST);
}
/* Ready the lights for foreground rendering. */
game_draw_light(gd, 1);
/* When reflection is disabled, mirrors must be rendered opaque */
/* to prevent the background from showing. */
if (gd->draw.reflective && !config_get_d(CONFIG_REFLECTION))
{
sol_color_mtrl(&rend, 1);
{
glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
game_refl_all(&rend, gd);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
}
sol_color_mtrl(&rend, 0);
}
/* Draw the mirrors and the rest of the foreground. */
game_refl_all (&rend, gd);
game_draw_fore(&rend, gd, pose, T, +1, t);
}
glPopMatrix();
video_pop_matrix();
/* Draw the fade overlay. */
sol_fade(&gd->draw, &rend, gd->fade_k);
sol_draw_disable(&rend);
game_shadow_conf(pose, 0);
}
}
void game_draw(int pose, float st)
{
float fov = view_fov;
if (jump_b) fov *= 2.f * fabsf(jump_dt - 0.5);
if (game_state)
{
config_push_persp(fov, 0.1f, FAR_DIST);
glPushMatrix();
{
float v[3], rx, ry;
float pup[3];
float pdn[3];
v_cpy(pup, view_p);
v_cpy(pdn, view_p);
pdn[1] = -pdn[1];
/* Compute and apply the view. */
v_sub(v, view_c, view_p);
rx = V_DEG(fatan2f(-v[1], fsqrtf(v[0] * v[0] + v[2] * v[2])));
ry = V_DEG(fatan2f(+v[0], -v[2])) + st;
glTranslatef(0.f, 0.f, -v_len(v));
glRotatef(rx, 1.f, 0.f, 0.f);
glRotatef(ry, 0.f, 1.f, 0.f);
glTranslatef(-view_c[0], -view_c[1], -view_c[2]);
#ifndef DREAMCAST_KGL_NOT_IMPLEMENT
if (config_get_d(CONFIG_REFLECTION))
{
/* Draw the mirror only into the stencil buffer. */
glDisable(GL_DEPTH_TEST);
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_ALWAYS, 1, 0xFFFFFFFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
game_refl_all(0);
/* Draw the scene reflected into color and depth buffers. */
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glStencilFunc(GL_EQUAL, 1, 0xFFFFFFFF);
glEnable(GL_DEPTH_TEST);
glFrontFace(GL_CW);
glPushMatrix();
{
glScalef(+1.f, -1.f, +1.f);
game_draw_light();
game_draw_back(pose, -1, pdn);
game_draw_fore(pose, rx, ry, -1, pdn);
}
glPopMatrix();
glFrontFace(GL_CCW);
glDisable(GL_STENCIL_TEST);
}
#endif
/* Draw the scene normally. */
game_draw_light();
game_refl_all(pose ? 0 : config_get_d(CONFIG_SHADOW));
game_draw_back(pose, +1, pup);
game_draw_fore(pose, rx, ry, +1, pup);
}
glPopMatrix();
config_pop_matrix();
/* Draw the fade overlay. */
fade_draw(fade_k);
}
}