split.br

用于GPU通用计算的编程语言BrookGPU 0.4

// split.br
// trying to force BRCC to multipass a kernel... :)

#include <stdio.h>

kernel void big(
	float4 arg1[], float4 arg2[], float4 arg3[],
	float4 arg4[], float4 arg5<>, out float4 result<> )
{
	float temp = arg5.x;
	temp = arg4[ temp ].x;
	temp = arg3[ temp ].x;
	temp = arg2[ temp ].x;
	result = arg1[ temp ];
}

kernel void caller(
	float4 arg1[], float4 arg2[], float4 arg3[],
	float4 arg4[], float4 arg5<>, out float4 result<> )
{
	big( arg1, arg2, arg3, arg4, arg5, result );
}


int main () {
	float4 a<10>;
	float4 b<10>;
	float4 a_data[10];
	float4 b_data[10];
	int i;
	
	for( i = 0; i < 10; i++ )
	{
		a_data[i].x = (float)((i+1) % 10);
		a_data[i].y = 1.0f;
		a_data[i].z = (float)i;
		a_data[i].w = 0.0f;
	}
	
	streamRead( a, a_data );
	big( a, a, a, a, a, b );
	streamWrite( b, b_data );
	
	for( i = 0; i < 10; i++ )
	{
		printf("<%f %f %f>\n", b_data[i].x, b_data[i].y, b_data[i].z);
	}
}