我正在使用渲染脚本。我想传递一个数组的元素来渲染脚本和 想要在渲染脚本中执行每个元素的平方并将数据返回到 android框架工作。
我试图通过以下代码来做到这一点。
1.java代码 2.RS代码
但是通过这些代码,这件事情是不可能的。请告诉我我在做什么样的错误 这些代码。
=============================================== =============================
public class SUM extends Activity {
private int[] input;
private int[] output;
private RenderScript mRS;
private Allocation mInAllocation;
private Allocation mOutAllocation;
private ScriptC_Sum mScript;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
input= new int[4];
input[0]=0;
input[1]=1;
input[2]=2;
input[3]=3;
output =new int[4];
createScript();
}
private void createScript() {
mRS = RenderScript.create(this);
mInAllocation = Allocation.createSized(mRS, Element.U32(mRS),4);
mOutAllocation = Allocation.createTyped(mRS,mInAllocation.getType());
mScript = new ScriptC_Sum(mRS, getResources(), R.raw.sum);
mScript.bind_v_in(mInAllocation);
mScript.bind_v_out(mOutAllocation);
mScript.invoke_square(mInAllocation,mOutAllocation);
}
}
=============================================== ============ RS CODE
#pragma version(1)
#pragma rs java_package_name(com.cdacb.mars.summation)
#include "rs_types.rsh"
#include "rs_graphics.rsh"
#include "rs_core.rsh"
int32_t *v_in ;
int32_t *v_out;
void square(){
}
void root(int32_t *v_in,int32_t *v_out )
{
square();
}
答案 0 :(得分:1)
一些事情:
1-我发现您的.rs文件与.java文件的名称不同
2-您在根函数(* v_out)上声明了一个输出变量,但从未在函数内部计算它。
3-你的java数组都是int。根据{{3}}上的幂函数声明,它们都至少需要一个浮动作为输入
这是我的java代码:
public class Sum extends Activity {
private float[] input;
private float[] output;
private RenderScript mRS;
private Allocation mInAllocation;
private Allocation mOutAllocation;
private TextView t1;
private ScriptC_Square mScript;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sum);
t1= new TextView(this);
t1= (TextView)findViewById(R.id.textview1);
input= new float[4];
input[0]=0;
input[1]=1;
input[2]=2;
input[3]=3;
output =new float[input.length];
createScript();
}
private void createScript() {
mRS = RenderScript.create(this);
mInAllocation = Allocation.createSized(mRS, Element.F32(mRS),4);
mOutAllocation = Allocation.createTyped(mRS,mInAllocation.getType());
mScript = new ScriptC_Square(mRS, getResources(), R.raw.square);
mInAllocation.copyFrom(input);
mScript.forEach_root(mInAllocation, mOutAllocation); // calls the forEach function to operate on the root function (each allocation input, will have a corresponding allocation output
mOutAllocation.copyTo(output); // copy the result that was stored in mOutAllocation into the array output
t1.setText(String.format("Input:%s\n\noutput:%s",
ArrayToString(input), ArrayToString(output)));
}
/**
* this function just print each element of a primitive float array into a text string
* @param array
* @return
*/
public String ArrayToString(float[] array){
String s="";
for(int i=0; i<array.length; i++){
s+= String.format("\nValue %d: %f", i, array[i]);
}
return s;
}
}
这是我的Square.rs文件:
#pragma version(1)
#pragma rs java_package_name(com.example.sum)//don't forget to change that package name
void root(const float *v_in, float *v_out ){
*v_out = pow(*v_in, 2); //use the internal pow function of Renderscript pow(float x, float y) = x ^y;
}