/**
 * @file lldrawpoolterrain.h
 * @brief LLDrawPoolTerrain 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_LLDRAWPOOLTERRAIN_H
#define LL_LLDRAWPOOLTERRAIN_H

#include "lldrawpool.h"

class LLDrawPoolTerrain : public LLFacePool
{
    LLPointer<LLViewerTexture> mTexturep;
public:
    enum
    {
        VERTEX_DATA_MASK = LLVertexBuffer::MAP_VERTEX |
                    LLVertexBuffer::MAP_NORMAL |
                    LLVertexBuffer::MAP_TANGENT | // Only PBR terrain uses this currently
                    LLVertexBuffer::MAP_TEXCOORD1
    };

    virtual U32 getVertexDataMask();
    LLDrawPoolTerrain(LLViewerTexture *texturep);
    virtual ~LLDrawPoolTerrain();

    /*virtual*/ S32 getNumDeferredPasses() { return 1; }
    /*virtual*/ void beginDeferredPass(S32 pass);
    /*virtual*/ void endDeferredPass(S32 pass);
    /*virtual*/ void renderDeferred(S32 pass);

    /*virtual*/ S32 getNumShadowPasses() { return 1; }
    /*virtual*/ void beginShadowPass(S32 pass);
    /*virtual*/ void endShadowPass(S32 pass);
    /*virtual*/ void renderShadow(S32 pass);

    /*virtual*/ void prerender();
    /*virtual*/ void dirtyTextures(const std::set<LLViewerFetchedTexture*>& textures);
    /*virtual*/ LLViewerTexture *getTexture();
    /*virtual*/ LLViewerTexture *getDebugTexture();
    /*virtual*/ LLColor3 getDebugColor() const; // For AGP debug display

    LLPointer<LLViewerTexture> mAlphaRampImagep;
    LLPointer<LLViewerTexture> m2DAlphaRampImagep;
    LLPointer<LLViewerTexture> mAlphaNoiseImagep;

    static S32 sPBRDetailMode;
    static F32 sDetailScale; // textures per meter
    static F32 sPBRDetailScale; // textures per meter

protected:
    void boostTerrainDetailTextures();

    void renderSimple();
    void renderOwnership();

    void renderFull2TU();
    void renderFull4TU();
    void renderFullShader();
    void renderFullShaderTextures();
    void renderFullShaderPBR(bool use_local_materials = false);
    void drawLoop();

private:
    void hilightParcelOwners();
};

#endif // LL_LLDRAWPOOLSIMPLE_H