dolphin/Source/Core/VideoCommon/Src/VertexShaderGen.h

// Copyright (C) 2003-2008 Dolphin Project.

// 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, version 2.0.

// 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 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#ifndef GCOGL_VERTEXSHADER_H
#define GCOGL_VERTEXSHADER_H

#include "XFMemory.h"

#define SHADER_POSMTX_ATTRIB 1
#define SHADER_NORM1_ATTRIB 6
#define SHADER_NORM2_ATTRIB 7


// shader variables
#define I_POSNORMALMATRIX "cpnmtx"
#define I_PROJECTION "cproj"
#define I_MATERIALS "cmtrl"
#define I_LIGHTS "clights"
#define I_TEXMATRICES "ctexmtx"
#define I_TRANSFORMMATRICES "ctrmtx"
#define I_NORMALMATRICES "cnmtx"
#define I_POSTTRANSFORMMATRICES "cpostmtx"
#define I_FOGPARAMS "cfog"

#define C_POSNORMALMATRIX 0
#define C_PROJECTION (C_POSNORMALMATRIX+6)
#define C_MATERIALS (C_PROJECTION+4)
#define C_LIGHTS (C_MATERIALS+4)
#define C_TEXMATRICES (C_LIGHTS+40)
#define C_TRANSFORMMATRICES (C_TEXMATRICES+24)
#define C_NORMALMATRICES (C_TRANSFORMMATRICES+64)
#define C_POSTTRANSFORMMATRICES (C_NORMALMATRICES+32)
#define C_FOGPARAMS (C_POSTTRANSFORMMATRICES+64)


class VERTEXSHADERUID
{
public:
	u32 values[9];

	VERTEXSHADERUID() {
		memset(values, 0, sizeof(values));		
	}

	VERTEXSHADERUID(const VERTEXSHADERUID& r) {
		for (size_t i = 0; i < sizeof(values) / sizeof(u32); ++i) 
			values[i] = r.values[i]; 
	}

	int GetNumValues() const {
		return (((values[0] >> 23) & 0xf)*3 + 3)/4 + 3; // numTexGens*3/4+1
	}

	bool operator <(const VERTEXSHADERUID& _Right) const
	{
		if (values[0] < _Right.values[0])
			return true;
		else if (values[0] > _Right.values[0])
			return false;
		int N = GetNumValues();
		for (int i = 1; i < N; ++i) {
			if (values[i] < _Right.values[i])
				return true;
			else if (values[i] > _Right.values[i])
				return false;
		}
		return false;
	}

	bool operator ==(const VERTEXSHADERUID& _Right) const
	{
		if (values[0] != _Right.values[0])
			return false;
		int N = GetNumValues();
		for (int i = 1; i < N; ++i) {
			if (values[i] != _Right.values[i])
				return false;
		}
		return true;
	}
};

const char *GenerateVertexShader(u32 components, bool has_zbuffer_target);
void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components, u32 zbufrender);

#endif