//========= Copyright Valve Corporation, All rights reserved. ============//

#ifndef VOLUME_CLOUDS_HELPER_H
#define VOLUME_CLOUDS_HELPER_H
#ifdef _WIN32
#pragma once
#endif

#include <string.h>

//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
class CBaseVSShader;
class IMaterialVar;
class IShaderDynamicAPI;
class IShaderShadow;

//-----------------------------------------------------------------------------
// Init params/ init/ draw methods
//-----------------------------------------------------------------------------
struct VolumeCloudsVars_t {
    VolumeCloudsVars_t() { memset(this, 0xFF, sizeof(VolumeCloudsVars_t)); }

    int m_nRefractAmount;
    int m_nTexture1;
    int m_nTexture2;
    int m_nTexture3;
    int m_nTime;
};

// Default values (Arrays should only be vec[4])
static const float kDefaultRefractAmount = 0.1f;

void InitParamsVolumeClouds(CBaseVSShader *pShader, IMaterialVar **params,
                            const char *pMaterialName,
                            VolumeCloudsVars_t &info);
void InitVolumeClouds(CBaseVSShader *pShader, IMaterialVar **params,
                      VolumeCloudsVars_t &info);
void DrawVolumeClouds(CBaseVSShader *pShader, IMaterialVar **params,
                      IShaderDynamicAPI *pShaderAPI,
                      IShaderShadow *pShaderShadow, VolumeCloudsVars_t &info,
                      VertexCompressionType_t vertexCompression);

#endif  // VolumeClouds_HELPER_H