GU doesn't do anything.
Posted: Sun Dec 30, 2018 5:05 pm
I've been pounding my head against my desk for 3 weeks now trying to figure out why I can't seem to get the GU to do anything, not even clear the screen. Initially, this was part of a bigger project but i've now broken it down into these calls in hopes of getting the screen to clear red.
I'm then compiling the code against the latest PSPSDK from GitHub inside of an Ubuntu virtual machine. Afterward, I've run this example on real hardware and PPSSPP and neither will show a red screen. What am I missing here? This code is basically ripped straight from the examples with the exception of it not actually drawing anything. Yet, I can't even get it to clear the screen red.
Result:
Code: Select all
#define GYRO_PSP_BUFFER_WIDTH 512
#define GYRO_PSP_SCREEN_WIDTH 480
#define GYRO_PSP_SCREEN_HEIGHT 272
static unsigned int __attribute__((aligned(16))) displayList[262144];
int main(int argc, char const *argv[])
{
void* fb0 = getStaticVramBuffer(GYRO_PSP_BUFFER_WIDTH, GYRO_PSP_SCREEN_HEIGHT, GU_PSM_8888);
void* fb1 = getStaticVramBuffer(GYRO_PSP_BUFFER_WIDTH, GYRO_PSP_SCREEN_HEIGHT, GU_PSM_8888);
void* zb = getStaticVramBuffer(GYRO_PSP_BUFFER_WIDTH, GYRO_PSP_SCREEN_HEIGHT, GU_PSM_4444);
sceGuInit();
sceGuStart(GU_DIRECT, displayList);
gyPrintf("Memory Locations\nFB0: %p\nFB1: %p\nZB: %p\n\n", fb0, fb1, zb);
sceGuDrawBuffer(GU_PSM_8888, fb0, GYRO_PSP_BUFFER_WIDTH);
sceGuDispBuffer(GYRO_PSP_SCREEN_WIDTH, GYRO_PSP_SCREEN_HEIGHT, fb1, GYRO_PSP_BUFFER_WIDTH);
sceGuDepthBuffer(zb, GYRO_PSP_BUFFER_WIDTH);
while(running)
{
sceGuStart(GU_DIRECT, displayList);
sceGuClearColor(GU_COLOR(1.0f, 0.0f, 0.0f, 1.0f));
sceGuClearDepth(0);
sceGuClear(GU_COLOR_BUFFER_BIT);
sceGuFinish();
sceGuSync(0, 0);
sceGuDisplay(GU_TRUE);
sceDisplayWaitVblankStart();
fb0 = sceGuSwapBuffers();
}
sceGuTerm();
return 0;
}
Result: