/*
===========================================================================
maya2q3 - export .md3 files from maya
Copyright (C) 2005 HermitWorks Entertainment Corporation

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
===========================================================================
*/

#include "common.h"

namespace shader
{

ShaderContext::ShaderContext( void ) : m_time( 0 ), m_showDetail( true ) { }

Shader::Shader( const char *name ) : m_shaderStarted( false ),
	m_currPass( (size_t)~0 ), m_name( name )
{
	InitDefault();
}

size_t Shader::GetStageCount( void ) const
{
	return m_numStages;
}

Shader::StageInfo Shader::GetStageInfo( size_t index ) const
{	
	const ShaderStage &stage = m_stages[ index ];

	StageInfo ret;

	ret.numImages = stage.bundle.numTextures;
	for( size_t i = 0; i < ret.numImages; i++ )
	{
		StageInfo::ImageInfo &ii = ret.images[i];

		ii.name = stage.bundle.texNames[i];
		ii.width = stage.bundle.texWidths[i];
		ii.height = stage.bundle.texHeights[i];
	}

	switch( stage.state & StateBits::TexAddr_Bits )
	{
	case StateBits::TexAddr_Clamp:
		ret.wrapClampMode = GL_CLAMP;
		break;

	case StateBits::TexAddr_ClampToEdge:
		ret.wrapClampMode = GL_CLAMP_TO_EDGE;
		break;

	default:
		ret.wrapClampMode = GL_REPEAT;
		break;
	} 

	ret.mipmap = !m_noMips;

	return ret;
}

GLuint Shader::StageInfo::LoadImage( size_t index ) const
{
	unsigned int w, h; //dummy vars

	return Shader::LoadTexture( images[index].name, mipmap, wrapClampMode, w, h );
}

bool Shader::HasTransparency( void ) const
{
	for( int i = 0; i < m_numStages; i++ )
		if( !(m_stages[i].state & StateBits::AlphaTest_Bits)
			&& (m_stages[i].state & StateBits::DstBlend_Bits) == StateBits::DstBlend_Zero )
			//stage is opaque
			return false;

	return true;
}

};