static void
lighting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
RenderPrimitiveLighting* self;
int x, y, z;
self = (RenderPrimitiveLighting *)data;
x = state->x, y = state->y, z = state->z;
if ((state->block == 9) || (state->block == 79)) { /* special case for water and ice */
/* looks like we need a new case for lighting, there are
* blocks that are transparent for occlusion calculations and
* need per-face shading if the face is drawn. */
if ((state->block_pdata & 16) == 16) {
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[0]);
}
if ((state->block_pdata & 2) == 2) { /* bottom left */
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
}
if ((state->block_pdata & 4) == 4) { /* bottom right */
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[2]);
}
/* leaves are transparent for occlusion calculations but they
* per face-shading to look as in game */
} else if (is_transparent(state->block) && (state->block != 18)) {
/* transparent: do shading on whole block */
do_shading_with_mask(self, state, x, y, z, mask_light);
} else {
/* opaque: do per-face shading */
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[0]);
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[2]);
}
}
static void
rendermode_lighting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask) {
RenderModeLighting* self;
int x, y, z;
/* first, chain up */
rendermode_normal.draw(data, state, src, mask);
self = (RenderModeLighting *)data;
x = state->x, y = state->y, z = state->z;
if (is_transparent(state->block)) {
/* transparent: do shading on whole block */
do_shading_with_mask(self, state, x, y, z, mask);
} else {
/* opaque: do per-face shading */
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[0]);
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[2]);
}
}