Sample Code

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	Here is a minimal stream program showing how to create storage for program inputs and outputs.		Here is a minimal stream program showing how to create storage for program inputs and outputs.
		+	<cpp>#include "sh.hpp"
		+	#include <iostream>
-	<pre><nowiki>	+	using namespace std;
-	#include "sh.hpp"	+	using namespace SH;
-	#include <iostream>	+
-	using namespace std;	+	int main()
-	using namespace SH;	+	{
		+	ShProgram prg = SH_BEGIN_PROGRAM("gpu:stream") {
		+	ShInputAttrib3f a;
		+	ShOutputAttrib3f b;
		+	b = a + ShAttrib3f(42.0, 42.0, 42.0);
		+	} SH_END;
-	int main()	+	float data[] = { 1.0, 0.5, -0.5 };
-	{	+	ShHostMemoryPtr mem_in = new ShHostMemory(sizeof(float) * 3, data, SH_FLOAT);
-	ShProgram prg = SH_BEGIN_PROGRAM("gpu:stream") {	+	ShChannel<ShAttrib3f> in(mem_in, 1);
-	ShInputAttrib3f a;	+
-	ShOutputAttrib3f b;	+
-	b = a + ShAttrib3f(42.0, 42.0, 42.0);	+
-	} SH_END;	+
-	float data[] = { 1.0, 0.5, -0.5 };	+	float outdata[3];
-	ShHostMemoryPtr mem_in = new ShHostMemory(sizeof(float) * 3, data, SH_FLOAT);	+	ShHostMemoryPtr mem_out = new ShHostMemory(sizeof(float) * 3, outdata, SH_FLOAT);
-	ShChannel<ShAttrib3f> in(mem_in, 1);	+	ShChannel<ShAttrib3f> out(mem_out, 1);
-	float outdata[3];	+	out = prg << in;
-	ShHostMemoryPtr mem_out = new ShHostMemory(sizeof(float) * 3, outdata, SH_FLOAT);	+
-	ShChannel<ShAttrib3f> out(mem_out, 1);	+
-		+
-	out = prg << in;	+
-	float* results = static_cast<float*>(mem_out->hostStorage()->data());	+	float* results = static_cast<float*>(mem_out->hostStorage()->data());
-	cout << "out = (" << results[0] << ", " << results[1] << ", "	+	cout << "out = (" << results[0] << ", " << results[1] << ", "
-	<< results[2] << ")" << endl;	+	<< results[2] << ")" << endl;
-	}	+	}</cpp>
-	</nowiki></pre>	+
	It should simply output the following:		It should simply output the following:
	out = (43, 42.5, 41.5)		out = (43, 42.5, 41.5)

---

Revision as of 14:56, 10 December 2005

Here are some examples of programs which use Sh. Feel free to suggest additions to this page if you want.

Simple stream program

Here is a minimal stream program showing how to create storage for program inputs and outputs.

#include "sh.hpp"
#include <iostream>
 
using namespace std;
using namespace SH;
 
int main()
{
  ShProgram prg = SH_BEGIN_PROGRAM("gpu:stream") {
    ShInputAttrib3f a;
    ShOutputAttrib3f b;
    b = a + ShAttrib3f(42.0, 42.0, 42.0);
  } SH_END;
 
  float data[] = { 1.0, 0.5, -0.5 };
  ShHostMemoryPtr mem_in = new ShHostMemory(sizeof(float) * 3, data, SH_FLOAT);
  ShChannel<ShAttrib3f> in(mem_in, 1);
 
  float outdata[3];
  ShHostMemoryPtr mem_out = new ShHostMemory(sizeof(float) * 3, outdata, SH_FLOAT);
  ShChannel<ShAttrib3f> out(mem_out, 1);
 
  out = prg << in;
  
  float* results = static_cast<float*>(mem_out->hostStorage()->data());
  cout << "out = (" << results[0] << ", " << results[1] << ", "
       << results[2] << ")" << endl;
} 

It should simply output the following:

out = (43, 42.5, 41.5)