DecalRData.h

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/* Copyright (C) 2023 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. 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.
 *
 * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef INCLUDED_DECALRDATA
#define INCLUDED_DECALRDATA
 
#include "graphics/RenderableObject.h"
#include "maths/Vector2D.h"
#include "maths/Vector3D.h"
#include "renderer/backend/IDeviceCommandContext.h"
#include "renderer/backend/IShaderProgram.h"
#include "renderer/VertexBufferManager.h"
 
#include <vector>
 
class CModelDecal;
class CShaderDefines;
class CSimulation2;
class ShadowMap;
 
class CDecalRData : public CRenderData
{
public:
    CDecalRData(CModelDecal* decal, CSimulation2* simulation);
    ~CDecalRData();
 
    static Renderer::Backend::IVertexInputLayout* GetVertexInputLayout();
 
    void Update(CSimulation2* simulation);
 
    static void RenderDecals(
        Renderer::Backend::IDeviceCommandContext* deviceCommandContext,
        Renderer::Backend::IVertexInputLayout* vertexInputLayout,
        const std::vector<CDecalRData*>& decals, const CShaderDefines& context, ShadowMap* shadow);
 
    CModelDecal* GetDecal() { return m_Decal; }
 
private:
    void BuildVertexData();
 
    struct SDecalVertex
    {
        CVector3D m_Position;
        CVector3D m_Normal;
        CVector2D m_UV;
    };
    cassert(sizeof(SDecalVertex) == 32);
 
    CVertexBufferManager::Handle m_VBDecals;
    CVertexBufferManager::Handle m_VBDecalsIndices;
 
    CModelDecal* m_Decal;
 
    CSimulation2* m_Simulation;
};
 
#endif // INCLUDED_DECALRDATA