dosbox-x/shaders/shader.code

/*
   Copyright (C) 2006 guest(r) - guest.r@gmail.com

   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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/ 


// Needed by my shaders



// matrix definitions  

float4x4 World			: WORLD;
float4x4 View			: VIEW;
float4x4 Projection		: PROJECTION;
float4x4 WorldView		: WORLDVIEW;			
float4x4 ViewProjection		: VIEWPROJECTION;		
float4x4 WorldViewProjection	: WORLDVIEWPROJECTION;


// useful variables

float2 ps : TEXELSIZE;

float3  dt = float3(1,1,1);
float4  d4 = float4(1,1,1,1);


// sampler init

texture s_tex	: SOURCETEXTURE;
texture t_tex   : WORKINGTEXTURE;

sampler	s_p = sampler_state
{
 Texture   = (s_tex);
 MinFilter = POINT;
 MagFilter = POINT;
};	

sampler	s_l = sampler_state
{
 Texture   = (s_tex);
 MinFilter = LINEAR;
 MagFilter = LINEAR;
};


sampler	s_w = sampler_state
{
 Texture   = (t_tex);
 MinFilter = POINT;
 MagFilter = POINT;
};

sampler	w_l = sampler_state
{
 Texture   = (t_tex);
 MinFilter = LINEAR;
 MagFilter = LINEAR;
};

// Vertex struct definitions


// Standard 9 texel

struct VERTEX_STUFF0
{
  float4  coord : POSITION;
  float2  CT   : TEXCOORD0;
  float4  t1   : TEXCOORD1;
  float4  t2   : TEXCOORD2;
  float4  t3   : TEXCOORD3;
  float4  t4   : TEXCOORD4;
};

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

// GS2X vertex shader structure

struct VERTEX_STUFF1
{
  float4  coord : POSITION;
  float2  CT    : TEXCOORD0;
  float2  UL    : TEXCOORD1;
  float2  UR    : TEXCOORD2;
  float2  DL    : TEXCOORD3;
  float2  DR    : TEXCOORD4;
};

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

// GS4x vertex shader structures

struct VERTEX_STUFF2
{
  float4  coord : POSITION;
  float2  CT    : TEXCOORD0;
  float2  UL    : TEXCOORD1;
  float2  UR    : TEXCOORD2;
  float2  DL    : TEXCOORD3;
  float2  DR    : TEXCOORD4;
  float2  iUL   : TEXCOORD5;
  float2  iUR   : TEXCOORD6;
  float4  iDD   : TEXCOORD7;
};

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

// Working Color VS structure
	
struct VERTEX_STUFF_W // color
{
  float4  coord : POSITION;
  float2  CT   : TEXCOORD0;
};

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

// Hor-Vert vertex structure

struct VERTEX_STUFF3
{
  float4  coord : POSITION;
  float2  C    : TEXCOORD0;
  float2  L    : TEXCOORD1;
  float2  R    : TEXCOORD2;
  float2  U    : TEXCOORD3;
  float2  D    : TEXCOORD4;
};


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

// More Texel coordinates

struct VERTEX_STUFF4
{
  float4  coord : POSITION;
  float2  CT   : TEXCOORD0;
  float4  t1   : TEXCOORD1;
  float4  t2   : TEXCOORD2;
  float4  t3   : TEXCOORD3;
  float4  t4   : TEXCOORD4;
  float4  t5   : TEXCOORD5;
  float4  t6   : TEXCOORD6;
};