SilhouetteRenderer.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_SILHOUETTERENDERER
#define INCLUDED_SILHOUETTERENDERER
 
#include "graphics/Overlay.h"
#include "graphics/ShaderTechniquePtr.h"
#include "maths/BoundingBoxAligned.h"
#include "renderer/backend/IDeviceCommandContext.h"
#include "renderer/backend/IShaderProgram.h"
 
class CCamera;
class CModel;
class CPatch;
class SceneCollector;
 
class SilhouetteRenderer
{
public:
    SilhouetteRenderer();
 
    void AddOccluder(CPatch* patch);
    void AddOccluder(CModel* model);
    void AddCaster(CModel* model);
 
    void ComputeSubmissions(const CCamera& camera);
    void RenderSubmitOverlays(SceneCollector& collector);
    void RenderSubmitOccluders(SceneCollector& collector);
    void RenderSubmitCasters(SceneCollector& collector);
 
    void RenderDebugBounds(
        Renderer::Backend::IDeviceCommandContext* deviceCommandContext);
    void RenderDebugOverlays(
        Renderer::Backend::IDeviceCommandContext* deviceCommandContext);
 
    void EndFrame();
 
private:
    bool m_DebugEnabled;
 
    std::vector<CPatch*> m_SubmittedPatchOccluders;
    std::vector<CModel*> m_SubmittedModelOccluders;
    std::vector<CModel*> m_SubmittedModelCasters;
 
    std::vector<CPatch*> m_VisiblePatchOccluders;
    std::vector<CModel*> m_VisibleModelOccluders;
    std::vector<CModel*> m_VisibleModelCasters;
 
    struct DebugBounds
    {
        CColor color;
        CBoundingBoxAligned bounds;
    };
 
    struct DebugRect
    {
        CColor color;
        float x0, y0, x1, y1;
    };
 
    std::vector<DebugBounds> m_DebugBounds;
    std::vector<DebugRect> m_DebugRects;
 
    std::vector<SOverlaySphere> m_DebugSpheres;
 
    CShaderTechniquePtr m_ShaderTech;
    Renderer::Backend::IVertexInputLayout* m_VertexInputLayout = nullptr;
};
 
#endif // INCLUDED_SILHOUETTERENDERER