Here, I define 2 kernels.
the two have the same inputstream, a 3*4 array.
Input:
0 1 2
3 4 5
6 7 8
9 10 11
Kernel 1:
kernel void kernelGPU1(int input[][],out int output[][])
{
int2 index = instance().xy;
int a = index.x;
int b = index.y;
output(b,a) =input(b,a);
}
the output of kernel 1 is the same as the input.
Kernel 2:
uint4 offset(0,0,0,0);
uint4 index(3,1,1,1);
kernelGPU2.domainOffset(offset);
kernelGPU2.domainSize(index);
kernel void kernelGPU2(
int input[][],
out int outputdata[][],// the size is 3*4
out int sumofcolumn<>// the size is 3
)
{
int2 index = instance().xy;
int a =index.x;
int b =index.y;
int i =0;
int t1=0,t2=0;
for (i=0;i<4;i++)
{
outputdata(b,a) =input(b,a) ;
t1=input(b,a) ;
t2+=t1;
b++;
}
sumofcolumn=t2;
}
the values of the parameter outputdata is
9 1 2
3 4 5
6 7 8
9 10 11
the values of the parameter sumofcolumn is
18 22 26
sumofcolumn gets the right result, but outputdata get error values 9 in position(0,0), the right value should be 0.
I don't know why this happened.
Could anyone tell me what is wrong with my code?
thanks very much.
