void
task1_main(void)
{
/*
* This is the bootstrap task- start up the scheduler and load the
* second task. Our scheduler is driven by the PIT timer IRQ at
* 100 Hz.
*/
Timer_InitPIT(PIT_HZ / 100);
Intr_SetMask(0, TRUE);
Intr_SetHandler(IRQ_VECTOR(IRQ_TIMER), schedulerIRQ);
/*
* Create the second task. It can start running at any time now.
*/
task_init(&task2, task2_main);
while (1) {
Intr_Disable();
Console_WriteString("Task 1\n");
Console_Flush();
Intr_Enable();
}
}
int
main(void)
{
uint32 frame = 0;
uint32 lastTick = 0;
Intr_Init();
Intr_SetFaultHandlers(SVGA_DefaultFaultHandler);
Timer_InitPIT(PIT_HZ / FRAME_RATE);
Intr_SetMask(PIT_IRQ, TRUE);
Intr_SetHandler(IRQ_VECTOR(PIT_IRQ), timerISR);
SVGA_Init();
GMR_Init();
Heap_Reset();
SVGA_SetMode(0, 0, 32);
Screen_Init();
ScreenDraw_Init(GMRID_SCREEN_DRAW);
allocNoise();
/*
* Define a screen.
*/
SVGAScreenObject myScreen = {
.structSize = sizeof(SVGAScreenObject),
.id = SCREEN_ID,
.flags = SVGA_SCREEN_HAS_ROOT | SVGA_SCREEN_IS_PRIMARY,
.size = { 800, 600 },
.root = { 0, 0 },
};
Screen_Define(&myScreen);
/*
* Draw some explanatory text.
*/
char docString[] =
"Annotated Blit Sample:"
"\n\n"
"You should see two moving rectangles. The left one is animated "
"using a fill-annotated blit. The blit itself contains random "
"noise, but the annotation is a blue fill. If your host is "
"using the annotation, you will see the blue. If not, you'll "
"see noise. Either one is correct, but it is often more efficient "
"to use the fill."
"\n\n"
"The right one is a copy-annotated blit. The blit data is again "
"random noise, and the copy is a screen-to-screen copy which "
"moves the rectangle from its old position to the new position. "
"We drew a checkerboard pattern to the screen once, and that "
"pattern should be preserved indefinitely if the annotation is "
"being executed correctly."
"\n\n"
"Both rectangles should have a 1-pixel solid white border, and "
"in both cases we use a fill-annotated blit to clear the screen "
"behind each rectangle. This annotation doesn't lie, its blit data "
"matches the advertised fill color.";
ScreenDraw_SetScreen(myScreen.id, myScreen.size.width, myScreen.size.height);
Console_Clear();
ScreenDraw_WrapText(docString, 770);
Console_WriteString(docString);
/*
* Animate the two rectangles indefinitely, sleeping between frames.
*/
while (1) {
SVGASignedRect oldRect1, oldRect2;
SVGASignedRect newRect1, newRect2;
/*
* Move them around in a circle.
*/
float theta = frame * 0.01;
newRect1.left = 190 + cosf(theta) * 60;
newRect1.top = 350 + sinf(theta) * 60;
newRect1.right = newRect1.left + 80;
newRect1.bottom = newRect1.top + 120;
newRect2.left = 530 + sinf(theta) * 60;
newRect2.top = 350 + cosf(theta) * 60;
newRect2.right = newRect2.left + 80;
newRect2.bottom = newRect2.top + 120;
/*
* Update the position of each.
*/
updateFillRect(frame ? &oldRect1 : NULL, &newRect1);
updateCopyRect(frame ? &oldRect2 : NULL, &newRect2);
oldRect1 = newRect1;
oldRect2 = newRect2;
/*
* Wait for the next timer tick.
*/
while (timerTick == lastTick) {
Intr_Halt();
}
lastTick = timerTick;
frame++;
}
return 0;
}
void Console_WriteLine(const char* pString)
{
Console_WriteString(pString, 0);
Console_WriteString("\n", 0);
}