/branches/adinetz01/runtime/CBucks.Device.Gpu.OpenGL.Wrapper/Performers.cpp

#include "stdafx.h"

#include <stdlib.h>

#include "Performers.h"



using namespace System::Collections::Generic;

using namespace CBucksDeviceGpuOpenGLWrapper;



//----------------------

//--- KernelCompiler ---

//----------------------



KernelCompiler::KernelCompiler()

{

	this->varconverters = gcnew GpuVarConverters();

	this->commandconverters = gcnew GpuCommandConverters();

	this->commandconverters->setVarConverters(varconverters);

}



GpuCommandConverter ^KernelCompiler::getCommandConverter(GpuOp op)

{

	return commandconverters->getConverter(op);

}



void KernelCompiler::setCommandConverter(int op, GpuCommandConverter ^converter)

{

	commandconverters->setConverter(op, converter);

}



void KernelCompiler::setVarConverter(int var, GpuVarConverter ^converter)

{

	varconverters->setConverter(var, converter);

}



String ^KernelCompiler::compile(GpuShaderCode ^code)

{

	String ^shader;

	this->clearError();

	try

	{

		for each (GpuVar ^var in code->variables)

			shader += varconverters->getConverter(var)->getDeclaration(var);

		//<fix me>

		shader += "void main(void){";

		for each (GpuCommand ^command in code->commandList)

			shader += commandconverters->getConverter(command)->convert(command);

		shader += "}";

		//</fix me>

	}

	catch (Exception ^ex)

	{

		this->setError(Error::BAD_PARAMS, ex->ToString());

		return nullptr;

	}

	return shader;

}



List<ParamFormat ^> ^KernelCompiler::compileParams(String ^params)

{

	this->clearError();

	cli::array<String ^, 1> ^tokens =

				params->Split(gcnew cli::array<String ^> {" ", ",", "\n"},

							  System::StringSplitOptions::RemoveEmptyEntries);

	int i = 0;

	List<ParamFormat ^> ^kparams = gcnew List<ParamFormat ^>();

	bool isOutParam;

	GpuDataType datatype;

	while (i < tokens->Length)

	{

		if (tokens[i] == "out")

		{

			isOutParam = true;

			i++;

		}

		else

			isOutParam = false;



		switch (tokens[i][0])

		{

			case 'f': datatype = GpuDataType::float1 + (GpuDataType)(tokens[i][5] - '1');

					  break;

			case 'i': datatype = GpuDataType::int1 + (GpuDataType)(tokens[i][3] - '1');

					  break;

			case 's': datatype = GpuDataType::samplerFloat1 + (GpuDataType)(tokens[i][12] == '1' ? 0 : 1);

					  break;

		}

		i++;

		kparams->Add(gcnew ParamFormat(tokens[i],

									   datatype,

									   isOutParam));

		i++;

	}

	return kparams;

}



//-----------------------

//--- KernelPerformer ---

//-----------------------



bool KernelPerformer::getOutputSize(array<Object ^> ^args,

									List<ParamFormat ^> ^vars,

									float &sizex, float &sizey,

									float &maxcoordx, float &maxcoordy)

{

	int i = 0;

	for each (ParamFormat ^f in vars)

	{

		if (f->isOutParam())

		{

			if (i >= args->Length ||

				args[i]->GetType() != BufferContext::typeid)

			{

				this->setError(Error::BAD_PARAMS, "Real params doesn't correspond to their definition");

				return false;

			}

			BufferFormat ^bformat = ((BufferContext ^)args[i])->getFormat();

			sizex = bformat->getSizeX();

			sizey = bformat->getSizeY();

			maxcoordx = bformat->getMaxCoordX();

			maxcoordy = bformat->getMaxCoordY();

			return true;

		}

		i++;

	}

	this->setError(Error::BAD_PARAMS, "There aren't any 'out' parameters");

	return false;

}



bool KernelPerformer::setDevice(float sizex, float sizey)

{

	this->clearError();

	glMatrixMode(GL_PROJECTION);

	glLoadIdentity();

	glOrtho(0.0, sizex, 0.0, sizey, -1.0, 1.0);

	glMatrixMode(GL_MODELVIEW);

	glLoadIdentity();

	glViewport(0, 0, sizex, sizey);

	return true;

}



KernelPerformer::KernelPerformer(FBOContainer ^container)

{

	this->container = container;

	this->varbinders = gcnew GpuVarBinders();

}



bool KernelPerformer::bindParams(array<Object ^> ^args, List<ParamFormat ^> ^vars)

{

	this->clearError();

	GLenum err;

	IEnumerator<ParamFormat ^> ^en = vars->GetEnumerator();

	try

	{

		for each (Object ^o in args)

		{

			if (!en->MoveNext())

			{

				this->setError(Error::BAD_PARAMS, "There aren't enough var for binding");

				return false;

			}

			varbinders->getBinder((int)en->Current->getDataType())

					  ->bind(en->Current, o);

		}

		if (en->MoveNext())

			{

				this->setError(Error::BAD_PARAMS, "There aren't enough objects for binding");

				return false;

			}

	}

	catch (Exception ^ex)

	{

		this->setError(Error::BAD_PARAMS, ex->ToString());

		return false;

	}

	if (!container->bind())

	{

		this->setError(container);

		return false;

	}

	if ((err = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT)) != 

		GL_FRAMEBUFFER_COMPLETE_EXT)

	{

		this->setError(Error::OPENGL_ERROR, "Framebuffer incomplete");

		return false;

	}

	return true;

}



bool KernelPerformer::unbindParams(array<Object ^> ^args, List<ParamFormat ^> ^vars)

{

	this->clearError();

	IEnumerator<ParamFormat ^> ^en = vars->GetEnumerator();

	try

	{

		for each (Object ^o in args)

		{

			if (!en->MoveNext())

			{

				this->setError(Error::BAD_PARAMS, "There aren't enough var for binding");

				return false;

			}

			varbinders->getBinder((int)en->Current->getDataType())

					  ->unbind(en->Current, o);

		}

		if (en->MoveNext())

			{

				this->setError(Error::BAD_PARAMS, "There aren't enough objects for binding");

				return false;

			}

	}

	catch (Exception ^ex)

	{

		this->setError(Error::BAD_PARAMS, ex->ToString());

		return false;

	}

	return true;

}