英文:
How to pass an array of structs to kernel with JOCL
问题
我正在使用JOCL（Java的OpenCL绑定）编写一个OpenCL光线追踪器。我想要将一个结构体数组传递给我的内核。这个结构体的定义如下：
struct Sphere {
float3 center;
float radius;
int materialIndex;
};
而内核接受的形式如下：
__kernel void raytraceKernel(
__constant struct Sphere *spheres,
// 其他参数...
在这种情况下，最佳的做法是什么？最初，这个结构体没有materialIndex字段，所以我只是在Java中创建了一个浮点数数组，将中心、半径和填充数据填充进去，然后将其发送到内核中。然而，当我添加了materialIndex字段后，我决定将我的程序转换为使用NIO缓冲区，但这并没有成功（数据损坏）。
在JOCL中向内核传递结构体数组是否有更好的方法呢？
英文:
I'm writing an OpenCL raytracer using JOCL (OpenCL bindings for Java). I want to pass an array of structs to my kernel. The struct looks like this:
struct Sphere {
float3 center;
float radius;
int materialIndex;
};
and the kernel takes it as this:
__kernel void raytraceKernel(
__constant struct Sphere *spheres,
etc...
What is the best way to do this? Initially, the struct did not have the materialIndex field, so I simply created an array of floats in Java, populated it with center, radius, and padding, and sent it to the kernel. However, when I added materialIndex I decided to convert my program to use NIO buffers, which didn't work (data was corrupted).
Is there a better approach to passing an array of structs to a kernel with JOCL?
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