/* -----------------------------------------------------------------------------
	GSFramework
	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
----------------------------------------------------------------------------- */


		#include "core/material.h"
		#include "log/log.h"

		using namespace GS::Core;


//------------------------------------------------------------------------------
Material::TextureStage	*Material::GetChannelStage(MaterialChannel channel) const
{
	for (int n = 0; n < max_texture_stage; ++n)
		if	(texstage[n].channel == channel)
			return &texstage[n];
	return NULL;
}
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
Material::TextureStage *Material::NewStage(MaterialChannel channel, const char *uri, UVMode uv_mode, uchar uv_index)
{
	TextureStage *s = GetChannelStage(channel);
	if	(s)
		return s;

	// Find a free stage.
	for (int n = 0; n < max_texture_stage; ++n)
		if	(texstage[n].channel == Channel_None)
		{
			s = &texstage[n];
			break;
		}

	if	(!s)
		__ERR__(__LOG_W__ << "No more free texture stage, cannot create new stage.\n", NULL)

	// Initialize stage.
	s->channel = channel;
	s->t = uri;
	s->uv_mode = uv_mode;
	s->uv_index = uv_index;
	return s;
}
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void				Material::Reset()
{
	renderword = Render_None;
	blendop = Blend_None;

	diffuse.Set(1, 1, 1);
	specular.Set(1, 1, 1);
	self.Set(0, 0, 0);
	ambient.Set(1, 1, 1);

	glossiness = 0.4f;
	opacity = 1;
	reflection = 0;
	irefraction = 1;
	athreshold = 0.1f;
	depth_bias = 0;

	shader.Clear();

	for	(int n = 0; n < max_texture_stage; n++)
		texstage[n].Reset();
	texstage_count = 0;
}
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void				Material::TextureStage::Reset()
{
	channel = Channel_None;
	op = Operator_Default;
	t.Clear();

	uv_mode = UV_UV;
	uv_matrix = Matrix4::IdentityMatrix();
	uv_index = 0;
}
//------------------------------------------------------------------------------

Material::Material()
{
	texstage.Allocate(max_texture_stage);
	Reset();
}