#include "GlRenderSystem/PrecompiledHeader.hpp"

#include "GlRenderSystem/Module_GlRender.hpp"
#include "GlRenderSystem/OpenGl.hpp"

using namespace Castor3D;
using namespace Castor;

namespace GlRender
{
	namespace GLSL
	{

		//***********************************************************************************************

		void ConstantsBase :: Replace( String & p_strSource )
		{
#if CASTOR_USE_DOUBLE
			str_utils::replace( p_strSource, cuT( "<vec2>" ), cuT( "vec2d" ) );
			str_utils::replace( p_strSource, cuT( "<vec3>" ), cuT( "vec3d" ) );
			str_utils::replace( p_strSource, cuT( "<vec4>" ), cuT( "vec4d" ) );
			str_utils::replace( p_strSource, cuT( "<mat3>" ), cuT( "dmat3" ) );
			str_utils::replace( p_strSource, cuT( "<mat4>" ), cuT( "dmat4" ) );
#else
			str_utils::replace( p_strSource, cuT( "<vec2>" ), cuT( "vec2" ) );
			str_utils::replace( p_strSource, cuT( "<vec3>" ), cuT( "vec3" ) );
			str_utils::replace( p_strSource, cuT( "<vec4>" ), cuT( "vec4" ) );
			str_utils::replace( p_strSource, cuT( "<mat3>" ), cuT( "mat3" ) );
			str_utils::replace( p_strSource, cuT( "<mat4>" ), cuT( "mat4" ) );
#endif
		}

		//***********************************************************************************************

		String ConstantsStd :: Matrices()
		{
			return
				cuT( "uniform	<mat4>	c3d_mtxProjection;\n"			)
				cuT( "uniform	<mat4>	c3d_mtxModel;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxView;\n"					)
				cuT( "uniform	<mat4>	c3d_mtxModelView;\n"			)
				cuT( "uniform	<mat4>	c3d_mtxProjectionView;\n"		)
				cuT( "uniform	<mat4>	c3d_mtxProjectionModelView;\n"	)
				cuT( "uniform	<mat4>	c3d_mtxNormal;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxTexture0;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxTexture1;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxTexture2;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxTexture3;\n"				)
				cuT( "uniform	<mat4>	c3d_mtxBones[100];\n"			);
		}

		String ConstantsStd :: Scene()
		{
			return
				cuT( "uniform	int		c3d_iLightsCount;\n"			)
				cuT( "uniform	vec4	c3d_v4AmbientLight;\n"			)
				cuT( "uniform	vec4	c3d_v4BackgroundColour;\n"		)
				cuT( "uniform	<vec3>	c3d_v3CameraPosition;\n"		);
		}

		String ConstantsStd :: Pass()
		{
			return
				cuT( "uniform	vec4	c3d_v4MatAmbient;\n"			)
				cuT( "uniform	vec4	c3d_v4MatDiffuse;\n"			)
				cuT( "uniform	vec4	c3d_v4MatEmissive;\n"			)
				cuT( "uniform	vec4	c3d_v4MatSpecular;\n"			)
				cuT( "uniform	float	c3d_fMatShininess;\n"			)
				cuT( "uniform	float	c3d_fMatOpacity;\n"				);
		}

		//***********************************************************************************************

		String ConstantsUbo :: Matrices()
		{
			return
				cuT( "layout( std140 ) uniform Matrices\n"		)
				cuT( "{\n"										)
				cuT( "	<mat4>	c3d_mtxProjection;\n"			)
				cuT( "	<mat4>	c3d_mtxModel;\n"				)
				cuT( "	<mat4>	c3d_mtxView;\n"					)
				cuT( "	<mat4>	c3d_mtxModelView;\n"			)
				cuT( "	<mat4>	c3d_mtxProjectionView;\n"		)
				cuT( "	<mat4>	c3d_mtxProjectionModelView;\n"	)
				cuT( "	<mat4>	c3d_mtxNormal;\n"				)
				cuT( "	<mat4>	c3d_mtxTexture0;\n"				)
				cuT( "	<mat4>	c3d_mtxTexture1;\n"				)
				cuT( "	<mat4>	c3d_mtxTexture2;\n"				)
				cuT( "	<mat4>	c3d_mtxTexture3;\n"				)
				cuT( "	<mat4>	c3d_mtxBones[100];\n"			)
				cuT( "};\n"										);
		}

		String ConstantsUbo :: Scene()
		{
			return 
				cuT( "layout( std140 ) uniform Scene\n"			)
				cuT( "{\n"										)
				cuT( "	int		c3d_iLightsCount;\n"			)
				cuT( "	vec4	c3d_v4AmbientLight;\n"			)
				cuT( "	vec4	c3d_v4BackgroundColour;\n"		)
				cuT( "	<vec3>	c3d_v3CameraPosition;\n"		)
				cuT( "};\n"										);
		}

		String ConstantsUbo :: Pass()
		{
			return
				cuT( "layout( std140 ) uniform PassColours\n"	)
				cuT( "{\n"										)
				cuT( "	vec4	c3d_v4MatAmbient;\n"			)
				cuT( "	vec4	c3d_v4MatDiffuse;\n"			)
				cuT( "	vec4	c3d_v4MatEmissive;\n"			)
				cuT( "	vec4	c3d_v4MatSpecular;\n"			)
				cuT( "	float	c3d_fMatShininess;\n"			)
				cuT( "	float	c3d_fMatOpacity;\n"				)
				cuT( "};\n"										);
		}

		//***********************************************************************************************
	}
}