Function nativeWrite

util/fbxtest.cpp:142–274

Platform-specific write test

// Platform-specific write test
void nativeWrite(bool useShm)
{
	fbx_struct fb;  int i = 0;  double drawTime;
	Timer timer, timer2;

	memset(&fb, 0, sizeof(fb));

	try
	{
		TRY_FBX(fbx_init(&fb, wh, 0, 0, useShm ? 1 : 0));
		if(useShm && !fb.shm) THROW("MIT-SHM not available");
		fprintf(stderr, "Native Pixel Format:  %s\n", fb.pf->name);
		if(fb.width != drawableWidth || fb.height != drawableHeight)
		{
			fprintf(stderr, "WARNING:  Requested size = %d x %d  Actual size = %d x %d\n",
				drawableWidth, drawableHeight, fb.width, fb.height);
		}

		clearFB();
		if(useShm)
			fprintf(stderr, "FBX bottom-up write [SHM]:     ");
		else
			fprintf(stderr, "FBX bottom-up write:           ");
		i = 0;  drawTime = 0;  timer2.start();
		do
		{
			#ifndef _WIN32
			if(checkDB)
			{
				memset(fb.bits, 255, fb.pitch * fb.height);
				TRY_FBX(fbx_awrite(&fb, 0, 0, 0, 0, 0, 0));
			}
			#endif
			initBuf(0, 0, fb.width, fb.pitch, fb.height, fb.pf,
				(unsigned char *)fb.bits, i);
			timer.start();
			TRY_FBX(fbx_flip(&fb, 0, 0, 0, 0));
			TRY_FBX(fbx_write(&fb, 0, 0, 0, 0, 0, 0));
			drawTime += timer.elapsed();
			i++;
		} while(timer2.elapsed() < benchTime);
		fprintf(stderr, "%f Mpixels/sec",
			(double)i * (double)(fb.width * fb.height) / (1000000. * drawTime));
		memset(fb.bits, 0, fb.pitch * fb.height);
		TRY_FBX(fbx_read(&fb, 0, 0));
		if(!cmpBuf(0, 0, fb.width, fb.pitch, fb.height, fb.pf,
			(unsigned char *)fb.bits, i - 1, true))
		{
			fprintf(stderr, " (ERROR CHECK FAILED)\n");
			retCode = -1;
		}
		else fprintf(stderr, " (no errors)\n");

		clearFB();
		if(useShm)
			fprintf(stderr, "FBX 1/4 top-down write [SHM]:  ");
		else
			fprintf(stderr, "FBX 1/4 top-down write:        ");