/** 
 * @file lldrawpoolwater.h
 * @brief LLDrawPoolWater class definition
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLDRAWPOOLWATER_H
#define LL_LLDRAWPOOLWATER_H

#include "lldrawpool.h"


class LLFace;
class LLHeavenBody;
class LLWaterSurface;
class LLGLSLShader;

class LLDrawPoolWater: public LLFacePool
{
protected:
	LLPointer<LLViewerTexture> mWaterImagep[2];	
	LLPointer<LLViewerTexture> mWaterNormp[2];

    LLPointer<LLViewerTexture> mOpaqueWaterImagep;

public:
	static BOOL sSkipScreenCopy;
	static BOOL sNeedsReflectionUpdate;
	static BOOL sNeedsDistortionUpdate;
	static F32 sWaterFogEnd;

	enum
	{
		VERTEX_DATA_MASK =	LLVertexBuffer::MAP_VERTEX |
							LLVertexBuffer::MAP_NORMAL |
							LLVertexBuffer::MAP_TEXCOORD0	
	};

	virtual U32 getVertexDataMask() { return VERTEX_DATA_MASK; }

	LLDrawPoolWater();
	/*virtual*/ ~LLDrawPoolWater();

	static void restoreGL();
	
	/*virtual*/ S32 getNumPostDeferredPasses() { return 0; } //getNumPasses(); }
	/*virtual*/ void beginPostDeferredPass(S32 pass);
	/*virtual*/ void endPostDeferredPass(S32 pass);
	/*virtual*/ void renderPostDeferred(S32 pass) { render(pass); }
	/*virtual*/ S32 getNumDeferredPasses() { return 1; }
	/*virtual*/ void renderDeferred(S32 pass = 0);

	/*virtual*/ S32 getNumPasses();
	/*virtual*/ void render(S32 pass = 0);
	/*virtual*/ void prerender();

	/*virtual*/ LLViewerTexture *getDebugTexture();
	/*virtual*/ LLColor3 getDebugColor() const; // For AGP debug display

	void renderReflection(LLFace* face);
	void shade();
    void shade2(bool edge, LLGLSLShader* shader, const LLColor3& light_diffuse, const LLVector3& light_dir, F32 light_exp);

    void setTransparentTextures(const LLUUID& transparentTextureId, const LLUUID& nextTransparentTextureId);
    void setOpaqueTexture(const LLUUID& opaqueTextureId);
    void setNormalMaps(const LLUUID& normalMapId, const LLUUID& nextNormalMapId);

protected:
	void renderOpaqueLegacyWater();

	// <FS:Zi> Render speedup for water parameters
	void onRenderWaterMipNormalChanged();

	bool mRenderWaterMipNormal;
	// </FS:Zi>
};

void cgErrorCallback();

#endif // LL_LLDRAWPOOLWATER_H
