#include <math.h>
#include <string.h>
#include <limits.h>
+#include <assert.h>
#include <conio.h>
#include "demo.h"
#include "keyb.h"
#include "timer.h"
#include "gfx.h"
#include "vmath.h"
-#include "sball.h"
#include "cfgopt.h"
#include "logger.h"
#include "tinyfps.h"
#undef NOKEYB
-static int handle_sball_event(sball_event *ev);
-static void recalc_sball_matrix(float *xform);
-
static int quit;
static int use_mouse;
static long fbsize;
-static int use_sball;
static vec3_t pos = {0, 0, 0};
static quat_t rot = {0, 0, 0, 1};
return 1;
}
- if(!(vmem_front = set_video_mode(fb_width, fb_height, fb_bpp))) {
+ if(!(vmem_back = set_video_mode(fb_width, fb_height, fb_bpp))) {
return 1;
}
- /* TODO implement multiple video memory pages for flipping */
- vmem_back = vmem_front;
+ if(!(vmem_front = page_flip(FLIP_NOW))) {
+ /* page flipping not supported */
+ vmem_front = vmem_back;
+ } else {
+ assert(vmem_back != vmem_front);
+ }
if(demo_init(argc, argv) == -1) {
set_text_mode();
return 1;
}
- if(opt.sball && sball_init() == 0) {
- use_sball = 1;
- }
-
reset_timer();
while(!quit) {
if(use_mouse) {
mouse_bmask = read_mouse(&mouse_x, &mouse_y);
}
- if(use_sball && sball_pending()) {
- sball_event ev;
- printf("got sball event\n");
- while(sball_getevent(&ev)) {
- handle_sball_event(&ev);
- }
- recalc_sball_matrix(sball_matrix);
- }
time_msec = get_msec();
demo_draw();
#ifndef NOKEYB
kb_shutdown();
#endif
- if(use_sball) {
- sball_shutdown();
- }
return 0;
}
void swap_buffers(void *pixels)
{
- /* TODO implement page flipping */
if(pixels) {
+ /* just memcpy to the front buffer */
if(opt.vsync) {
wait_vsync();
}
drawFps(pixels);
memcpy(vmem_front, pixels, fbsize);
- } else {
- drawFps(vmem_back);
-
- if(opt.vsync) {
- wait_vsync();
- }
- }
-}
+ } else {
+ /* attempt page flipping */
+ void *next;
-#define TX(ev) ((ev)->motion.motion[0])
-#define TY(ev) ((ev)->motion.motion[1])
-#define TZ(ev) ((ev)->motion.motion[2])
-#define RX(ev) ((ev)->motion.motion[3])
-#define RY(ev) ((ev)->motion.motion[4])
-#define RZ(ev) ((ev)->motion.motion[5])
-
-static int handle_sball_event(sball_event *ev)
-{
- switch(ev->type) {
- case SBALL_EV_MOTION:
- if(RX(ev) | RY(ev) | RZ(ev)) {
- float rx = (float)RX(ev);
- float ry = (float)RY(ev);
- float rz = (float)RZ(ev);
- float axis_len = sqrt(rx * rx + ry * ry + rz * rz);
- if(axis_len > 0.0) {
- rot = quat_rotate(rot, axis_len * 0.001, -rx / axis_len,
- -ry / axis_len, -rz / axis_len);
+ drawFps(vmem_back);
+ if((next = page_flip(opt.vsync ? FLIP_VBLANK_WAIT : FLIP_NOW))) {
+ assert(next == vmem_back);
+ vmem_back = vmem_front;
+ vmem_front = next;
+ } else {
+ /* failed to page flip, assume we drew in the front buffer then
+ * and just wait for vsync if necessary
+ */
+ if(opt.vsync) {
+ wait_vsync();
}
}
-
- pos.x += TX(ev) * 0.001;
- pos.y += TY(ev) * 0.001;
- pos.z += TZ(ev) * 0.001;
- break;
-
- case SBALL_EV_BUTTON:
- if(ev->button.pressed) {
- pos = v3_cons(0, 0, 0);
- rot = quat_cons(1, 0, 0, 0);
- }
- break;
}
-
- return 0;
-}
-
-void recalc_sball_matrix(float *xform)
-{
- quat_to_mat(xform, rot);
- xform[12] = pos.x;
- xform[13] = pos.y;
- xform[14] = pos.z;
}