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build/sim/dut_tb: add bottom line on surface to show frame count

This commit is contained in:
Florent Kermarrec 2016-05-23 10:20:05 +02:00
parent 65f74959b3
commit fa7ac6c9a2
1 changed files with 6 additions and 1 deletions
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7
litex/build/sim/dut_tb.cpp
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@ -207,7 +207,7 @@ void vga_set_pixel(SDL_Surface *screen, int x, int y, char r, char g, char b)
int vga_init(struct sim *s) { int vga_init(struct sim *s) {
if(SDL_Init(SDL_INIT_VIDEO) < 0) return 1; if(SDL_Init(SDL_INIT_VIDEO) < 0) return 1;
if(!(screen = SDL_SetVideoMode(640, 480, 32, SDL_HWSURFACE))) { if(!(screen = SDL_SetVideoMode(640, 480+1, 32, SDL_HWSURFACE))) {
SDL_Quit(); SDL_Quit();
return 1; return 1;
} }
@ -216,10 +216,12 @@ int vga_init(struct sim *s) {
int x; int x;
int y; int y;
int frame;
int hsync_wait_de = 1; int hsync_wait_de = 1;
int vsync_wait_de = 1; int vsync_wait_de = 1;
void vga_service(struct sim *s) { void vga_service(struct sim *s) {
int i;
if(VGA_HSYNC == 1 && hsync_wait_de == 0) { if(VGA_HSYNC == 1 && hsync_wait_de == 0) {
x = 0; x = 0;
y++; y++;
@ -228,6 +230,9 @@ void vga_service(struct sim *s) {
if(VGA_VSYNC == 1 && vsync_wait_de == 0) { if(VGA_VSYNC == 1 && vsync_wait_de == 0) {
y = 0; y = 0;
vsync_wait_de = 1; vsync_wait_de = 1;
for(i=0; i<frame; i++)
vga_set_pixel(screen, i%640, 480, 255, 255, 255);
frame++;
if(SDL_MUSTLOCK(screen)) if(SDL_MUSTLOCK(screen))
SDL_UnlockSurface(screen); SDL_UnlockSurface(screen);
SDL_Flip(screen); SDL_Flip(screen);