GasGiantJobs.h

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// Copyright © 2008-2015 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _GASGIANTJOBS_H
#define _GASGIANTJOBS_H
 
#include <SDL_stdinc.h>
 
#include "JobQueue.h"
#include "graphics/Material.h"
#include "graphics/opengl/GenGasGiantColourMaterial.h"
#include "graphics/VertexBuffer.h"
#include "terrain/Terrain.h"
#include "vector3.h"
 
#include <deque>
 
namespace Graphics {
    class Renderer;
    class RenderState;
}
 
namespace GasGiantJobs {
    //#define DUMP_PARAMS 1
 
    // generate root face patches of the cube/sphere
    static const vector3d p1 = (vector3d(1, 1, 1)).Normalized();
    static const vector3d p2 = (vector3d(-1, 1, 1)).Normalized();
    static const vector3d p3 = (vector3d(-1, -1, 1)).Normalized();
    static const vector3d p4 = (vector3d(1, -1, 1)).Normalized();
    static const vector3d p5 = (vector3d(1, 1, -1)).Normalized();
    static const vector3d p6 = (vector3d(-1, 1, -1)).Normalized();
    static const vector3d p7 = (vector3d(-1, -1, -1)).Normalized();
    static const vector3d p8 = (vector3d(1, -1, -1)).Normalized();
 
    const vector3d &GetPatchFaces(const Uint32 patch, const Uint32 face);
 
    class STextureFaceRequest {
    public:
        STextureFaceRequest(const vector3d *v_, const SystemPath &sysPath_, const Sint32 face_, const Sint32 uvDIMs_, Terrain *pTerrain_);
 
        // RUNS IN ANOTHER THREAD!! MUST BE THREAD SAFE!
        // Use only data local to this object
        void OnRun();
 
        Sint32 Face() const { return face; }
        inline Sint32 UVDims() const { return uvDIMs; }
        Color *Colors() const { return colors; }
        const SystemPath &SysPath() const { return sysPath; }
 
    protected:
        // deliberately prevent copy constructor access
        STextureFaceRequest(const STextureFaceRequest &r) = delete;
 
        inline Sint32 NumTexels() const { return uvDIMs * uvDIMs; }
 
        // in patch surface coords, [0,1]
        inline vector3d GetSpherePoint(const double x, const double y) const
        {
            return (corners[0] + x * (1.0 - y) * (corners[1] - corners[0]) + x * y * (corners[2] - corners[0]) + (1.0 - x) * y * (corners[3] - corners[0])).Normalized();
        }
 
        // these are created with the request and are given to the resulting patches
        Color *colors;
 
        const vector3d *corners;
        const SystemPath sysPath;
        const Sint32 face;
        const Sint32 uvDIMs;
        RefCountedPtr<Terrain> pTerrain;
    };
 
    class STextureFaceResult {
    public:
        struct STextureFaceData {
            STextureFaceData() {}
            STextureFaceData(Color *c_, Sint32 uvDims_) :
                colors(c_),
                uvDims(uvDims_) {}
            Color *colors;
            Sint32 uvDims;
        };
 
        STextureFaceResult(const int32_t face_) :
            mFace(face_) {}
 
        void addResult(Color *c_, Sint32 uvDims_)
        {
            PROFILE_SCOPED()
            mData = STextureFaceData(c_, uvDims_);
        }
 
        inline const STextureFaceData &data() const { return mData; }
        inline int32_t face() const { return mFace; }
 
        void OnCancel()
        {
            if (mData.colors) {
                delete[] mData.colors;
                mData.colors = NULL;
            }
        }
 
    protected:
        // deliberately prevent copy constructor access
        STextureFaceResult(const STextureFaceResult &r) = delete;
 
        const int32_t mFace;
        STextureFaceData mData;
    };
 
    // ********************************************************************************
    // Overloaded PureJob class to handle generating the mesh for each patch
    // ********************************************************************************
    class SingleTextureFaceJob : public Job {
    public:
        SingleTextureFaceJob(STextureFaceRequest *data) :
            mData(data),
            mpResults(nullptr)
        { /* empty */
        }
        virtual ~SingleTextureFaceJob();
 
        virtual void OnRun();
        virtual void OnFinish();
        virtual void OnCancel() {}
 
    private:
        // deliberately prevent copy constructor access
        SingleTextureFaceJob(const SingleTextureFaceJob &r) = delete;
 
        std::unique_ptr<STextureFaceRequest> mData;
        STextureFaceResult *mpResults;
    };
 
    // ********************************************************************************
    // a quad with reversed winding
    class GenFaceQuad {
    public:
        GenFaceQuad(Graphics::Renderer *r, const vector2f &size, Graphics::RenderState *state, const Uint32 GGQuality);
        virtual void Draw(Graphics::Renderer *r);
 
        void SetMaterial(Graphics::Material *mat)
        {
            assert(mat);
            m_material.reset(mat);
        }
        Graphics::Material *GetMaterial() const { return m_material.get(); }
 
    private:
        std::unique_ptr<Graphics::Material> m_material;
        std::unique_ptr<Graphics::VertexBuffer> m_vertexBuffer;
        Graphics::RenderState *m_renderState;
    };
 
    // ********************************************************************************
    class SGPUGenRequest {
    public:
        SGPUGenRequest(const SystemPath &sysPath_, const Sint32 uvDIMs_, Terrain *pTerrain_, const float planetRadius_, const float hueAdjust_, GenFaceQuad *pQuad_, Graphics::Texture *pTex_);
 
        inline Sint32 UVDims() const { return uvDIMs; }
        Graphics::Texture *Texture() const { return m_texture.Get(); }
        GenFaceQuad *Quad() const { return pQuad; }
        const SystemPath &SysPath() const { return sysPath; }
        void SetupMaterialParams(const int face);
 
    protected:
        // deliberately prevent copy constructor access
        SGPUGenRequest(const SGPUGenRequest &r) = delete;
 
        inline Sint32 NumTexels() const { return uvDIMs * uvDIMs; }
 
        // this is created with the request and are given to the resulting patches
        RefCountedPtr<Graphics::Texture> m_texture;
 
        const SystemPath sysPath;
        const Sint32 uvDIMs;
        Terrain *pTerrain;
        const float planetRadius;
        const float hueAdjust;
        GenFaceQuad *pQuad;
        Graphics::GenGasGiantColourMaterialParameters m_specialParams;
    };
 
    // ********************************************************************************
    class SGPUGenResult {
    public:
        struct SGPUGenData {
            SGPUGenData() {}
            SGPUGenData(Graphics::Texture *t_, Sint32 uvDims_) :
                texture(t_),
                uvDims(uvDims_) {}
            RefCountedPtr<Graphics::Texture> texture;
            Sint32 uvDims;
        };
 
        SGPUGenResult() {}
 
        void addResult(Graphics::Texture *t_, Sint32 uvDims_);
 
        inline const SGPUGenData &data() const { return mData; }
 
        void OnCancel();
 
    protected:
        // deliberately prevent copy constructor access
        SGPUGenResult(const SGPUGenResult &r) = delete;
 
        SGPUGenData mData;
    };
 
    // ********************************************************************************
    // Overloaded JobGPU class to handle generating the mesh for each patch
    // ********************************************************************************
    class SingleGPUGenJob : public Job {
    public:
        SingleGPUGenJob(SGPUGenRequest *data);
        virtual ~SingleGPUGenJob();
 
        virtual void OnRun();
        virtual void OnFinish();
        virtual void OnCancel() {}
 
    private:
        SingleGPUGenJob() {}
        // deliberately prevent copy constructor access
        SingleGPUGenJob(const SingleGPUGenJob &r) = delete;
 
        std::unique_ptr<SGPUGenRequest> mData;
        SGPUGenResult *mpResults;
    };
} // namespace GasGiantJobs
 
#endif /* _GASGIANTJOBS_H */