Question

如果我运行下面的代码（OpenCL C 1.1，JavaCL RC3），我收到错误

Compilation failure : CL_INVALID_VALUE

关于代码的优势在于更换线后：

    write_imagef(output, (int2)(coords.y,coords.x), rnd);

与

    write_imagef(output, (int2)(coords.y,coords.x), pixel);

完美无缺。 如何正确初始化float4结构并为输出图像赋值？

__kernel void rotate_image(
    __read_only image2d_t input,
    __write_only image2d_t output,
    sampler_t sampler,
    int hiddenLayerX,
    int hiddenLayerY
    )
{
     // Store each work-items unique row and column
    int2 coords = (int2){get_global_id(0), get_global_id(1)};
    float4 pixel = read_imagef(input, sampler, coords);
    float4 rnd =  (float4){1.0f,1.0f,1.0f,1.0f};
    write_imagef(output, (int2)(coords.y,coords.x), rnd);    
}

Answer 1

这些是不同的初始化方式：

float4 val =  (float4)(1.0f); //Extends the single value to the float4
float4 val =  (float4)(1.0f,1.0f,1.0f,1.0f); //Set every value
float4 val =  (float4)(my_float2, my_float2); //Copy from another component(s)
float4 val =  (float4)(my_float2, 1.0f, 1.0f); //Many ways
float4 val =  (float4)(1.0f, my_float3); //Many more ways
...

OpenCL - write_imagef编译失败：CL_INVALID_VALUE

1 个答案: