five_d_gpu_buffer.cpp

#include "Halide.h"
#include <stdio.h>

using namespace Halide;

int main(int argc, char **argv) {

    // Move this test to correctness once we can support >4d buffer_ts on the gpu

    if (!get_jit_target_from_environment().has_gpu_feature()) {
        printf("No gpu target enabled. Skipping test.\n");
        // This test is currently expected to error out.
        printf("Error: pretending that there was an error\n");
        return -1;
    }


    Func f;
    Var v0, v1, v2, v3, v4;

    f(v0, v1, v2, v3, v4) = v0 + 2*v1 + 4*v2 + 8*v3 + 16*v4;

    f.compute_root().gpu_blocks(v3, v4).gpu_threads(v1, v2);

    // Linearize into an output buffer
    Func g;
    g(v0) = f(v0 % 2, (v0 / 2) % 2, (v0 / 4) % 2, (v0 / 8) % 2, (v0 / 16) % 2);

    Image<int> result = g.realize(32);

    // Delete this code once this test works.
    printf("Error: I should not have successfully compiled.\n");
    return -1;

    for (int i = 0; i < result.width(); i++) {
        if (i != result(i)) {
            printf("result(%d) = %d instead of %d\n",
                   i, result(i), i);
            return -1;
        }
    }

    printf("Success!\n");
    return 0;
}