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#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <memdraw.h>
#include <mouse.h>
#include <keyboard.h>
#include <geometry.h>
#include "libobj/obj.h"
#include "dat.h"
#include "fns.h"
extern int shownormals; /* XXX DBG */
static void
framebufctl_draw(Framebufctl *ctl, Memimage *dst, int showz)
{
lock(&ctl->swplk);
memimagedraw(dst, dst->r, showz? ctl->fb[ctl->idx]->zb: ctl->fb[ctl->idx]->cb, ZP, nil, ZP, SoverD);
/* XXX DBG */
if(shownormals)
memimagedraw(dst, dst->r, ctl->fb[ctl->idx]->nb, ZP, nil, ZP, SoverD);
unlock(&ctl->swplk);
}
static void
framebufctl_swap(Framebufctl *ctl)
{
lock(&ctl->swplk);
ctl->idx ^= 1;
unlock(&ctl->swplk);
}
static void
framebufctl_reset(Framebufctl *ctl)
{
Framebuf *fb;
/* address the back buffer—resetting the front buffer is VERBOTEN */
fb = ctl->fb[ctl->idx^1];
memsetd(fb->zbuf, Inf(-1), Dx(fb->r)*Dy(fb->r));
memfillcolor(fb->cb, DTransparent);
memfillcolor(fb->zb, DTransparent);
memfillcolor(fb->nb, DTransparent); /* XXX DBG */
}
Framebuf *
mkfb(Rectangle r)
{
Framebuf *fb;
fb = emalloc(sizeof *fb);
fb->cb = eallocmemimage(r, RGBA32);
fb->zb = eallocmemimage(r, RGBA32);
fb->zbuf = emalloc(Dx(r)*Dy(r)*sizeof(*fb->zbuf));
memsetd(fb->zbuf, Inf(-1), Dx(r)*Dy(r));
memset(&fb->zbuflk, 0, sizeof(fb->zbuflk));
fb->nb = eallocmemimage(r, RGBA32); /* XXX DBG */
fb->r = r;
return fb;
}
Framebufctl *
newfbctl(Rectangle r)
{
Framebufctl *fc;
fc = emalloc(sizeof *fc);
memset(fc, 0, sizeof *fc);
fc->fb[0] = mkfb(r);
fc->fb[1] = mkfb(r);
fc->draw = framebufctl_draw;
fc->swap = framebufctl_swap;
fc->reset = framebufctl_reset;
return fc;
}
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