gglassembler.h

Android 一些工具

            int8_t size;
        };


private:
    struct tex_coord_t {
        reg_t       s;
        reg_t       t;
        pointer_t   ptr;
    };

    struct fragment_parts_t {
        uint32_t    packed  : 1;
        uint32_t    reload  : 2;
        uint32_t    iterated_packed  : 1;
        pixel_t     iterated;
        pointer_t   cbPtr;
        pointer_t   covPtr;
        reg_t       count;
        reg_t       argb[4];
        reg_t       argb_dx[4];
        reg_t       z;
        reg_t       dither;
        pixel_t     texel[GGL_TEXTURE_UNIT_COUNT];
        tex_coord_t coords[GGL_TEXTURE_UNIT_COUNT];
    };
    
    struct texture_unit_t {
        int         format_idx;
        GGLFormat   format;
        int         bits;
        int         swrap;
        int         twrap;
        int         env;
        int         pot;
        int         linear;
        uint8_t     mask;
        uint8_t     replaced;
    };

    struct texture_machine_t {
        texture_unit_t  tmu[GGL_TEXTURE_UNIT_COUNT];
        uint8_t         mask;
        uint8_t         replaced;
        uint8_t         directTexture;
        uint8_t         activeUnits;
    };

    struct component_info_t {
        bool    masked      : 1;
        bool    inDest      : 1;
        bool    needed      : 1;
        bool    replaced    : 1;
        bool    iterated    : 1;
        bool    smooth      : 1;
        bool    blend       : 1;
        bool    fog         : 1;
    };

    struct builder_context_t {
        context_t const*    c;
        needs_t             needs;
        int                 Rctx;
    };

    template <typename T>
    void modify(T& r, Scratch& regs)
    {
        if (!(r.flags & CORRUPTIBLE)) {
            r.reg = regs.obtain();
            r.flags |= CORRUPTIBLE;
        }
    }

    // helpers
    void    base_offset(const pointer_t& d, const pointer_t& b, const reg_t& o);

    // texture environement
    void    modulate(   component_t& dest,
                        const component_t& incoming,
                        const pixel_t& texel, int component);

    void    decal(  component_t& dest,
                    const component_t& incoming,
                    const pixel_t& texel, int component);

    void    blend(  component_t& dest,
                    const component_t& incoming,
                    const pixel_t& texel, int component, int tmu);

    // load/store stuff
    void    store(const pointer_t& addr, const pixel_t& src, uint32_t flags=0);
    void    load(const pointer_t& addr, const pixel_t& dest, uint32_t flags=0);
    void    extract(integer_t& d, const pixel_t& s, int component);    
    void    extract(component_t& d, const pixel_t& s, int component);    
    void    extract(integer_t& d, int s, int h, int l, int bits=32);
    void    expand(integer_t& d, const integer_t& s, int dbits);
    void    expand(integer_t& d, const component_t& s, int dbits);
    void    expand(component_t& d, const component_t& s, int dbits);
    void    downshift(pixel_t& d, int component, component_t s, const reg_t& dither);


    void    mul_factor( component_t& d,
                        const integer_t& v,
                        const integer_t& f);

    void    mul_factor_add( component_t& d,
                            const integer_t& v,
                            const integer_t& f,
                            const component_t& a);

    void    component_add(  component_t& d,
                            const integer_t& dst,
                            const integer_t& src);

    void    component_sat(  const component_t& v);


    void    build_scanline_prolog(  fragment_parts_t& parts,
                                    const needs_t& needs);

    void    build_smooth_shade(const fragment_parts_t& parts);

    void    build_component(    pixel_t& pixel,
                                const fragment_parts_t& parts,
                                int component,
                                Scratch& global_scratches);
                                
    void    build_incoming_component(
                                component_t& temp,
                                int dst_size,
                                const fragment_parts_t& parts,
                                int component,
                                Scratch& scratches,
                                Scratch& global_scratches);

    void    init_iterated_color(fragment_parts_t& parts, const reg_t& x);

    void    build_iterated_color(   component_t& fragment,
                                    const fragment_parts_t& parts,
                                    int component,
                                    Scratch& regs);

    void    decodeLogicOpNeeds(const needs_t& needs);
    
    void    decodeTMUNeeds(const needs_t& needs, context_t const* c);

    void    init_textures(  tex_coord_t* coords,
                            const reg_t& x,
                            const reg_t& y);

    void    build_textures( fragment_parts_t& parts,
                            Scratch& regs);

    void    filter8(   const fragment_parts_t& parts,
                        pixel_t& texel, const texture_unit_t& tmu,
                        int U, int V, pointer_t& txPtr,
                        int FRAC_BITS);

    void    filter16(   const fragment_parts_t& parts,
                        pixel_t& texel, const texture_unit_t& tmu,
                        int U, int V, pointer_t& txPtr,
                        int FRAC_BITS);

    void    filter24(   const fragment_parts_t& parts,
                        pixel_t& texel, const texture_unit_t& tmu,
                        int U, int V, pointer_t& txPtr,
                        int FRAC_BITS);

    void    filter32(   const fragment_parts_t& parts,
                        pixel_t& texel, const texture_unit_t& tmu,
                        int U, int V, pointer_t& txPtr,
                        int FRAC_BITS);

    void    build_texture_environment(  component_t& fragment,
                                        const fragment_parts_t& parts,
                                        int component,
                                        Scratch& regs);

    void    wrapping(   int d,
                        int coord, int size,
                        int tx_wrap, int tx_linear);

    void    build_fog(  component_t& temp,
                        int component,
                        Scratch& parent_scratches);

    void    build_blending(     component_t& in_out,
                                const pixel_t& pixel,
                                int component,
                                Scratch& parent_scratches);

    void    build_blend_factor(
                integer_t& factor, int f, int component,
                const pixel_t& dst_pixel,
                integer_t& fragment,
                integer_t& fb,
                Scratch& scratches);

    void    build_blendFOneMinusF(  component_t& temp,
                                    const integer_t& factor, 
                                    const integer_t& fragment,
                                    const integer_t& fb);

    void    build_blendOneMinusFF(  component_t& temp,
                                    const integer_t& factor, 
                                    const integer_t& fragment,
                                    const integer_t& fb);

    void build_coverage_application(component_t& fragment,
                                    const fragment_parts_t& parts,
                                    Scratch& regs);

    void build_alpha_test(component_t& fragment, const fragment_parts_t& parts);

    enum { Z_TEST=1, Z_WRITE=2 }; 
    void build_depth_test(const fragment_parts_t& parts, uint32_t mask);
    void build_iterate_z(const fragment_parts_t& parts);
    void build_iterate_f(const fragment_parts_t& parts);
    void build_iterate_texture_coordinates(const fragment_parts_t& parts);

    void build_logic_op(pixel_t& pixel, Scratch& regs);

    void build_masking(pixel_t& pixel, Scratch& regs);

    void build_and_immediate(int d, int s, uint32_t mask, int bits);

    bool    isAlphaSourceNeeded() const;

    enum {
        FACTOR_SRC=1, FACTOR_DST=2, BLEND_SRC=4, BLEND_DST=8 
    };
    
    enum {
        LOGIC_OP=1, LOGIC_OP_SRC=2, LOGIC_OP_DST=4
    };

    static int blending_codes(int fs, int fd);

    builder_context_t   mBuilderContext;
    texture_machine_t   mTextureMachine;
    component_info_t    mInfo[4];
    int                 mBlending;
    int                 mMasking;
    int                 mLogicOp;
    int                 mAlphaTest;
    int                 mAA;
    int                 mDithering;
    int                 mDepthTest;

    int             mSmooth;
    int             mFog;
    pixel_t         mDstPixel;
    
    GGLFormat       mCbFormat;
    
    int             mBlendFactorCached;
    integer_t       mAlphaSource;
    
    int             mBaseRegister;
    
    int             mBlendSrc;
    int             mBlendDst;
    int             mBlendSrcA;
    int             mBlendDstA;
    
    int             mOptLevel;
};

// ----------------------------------------------------------------------------

}; // namespace android

#endif // ANDROID_GGLASSEMBLER_H