vello/piet-gpu/shader/ptcl.h

// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense

// Code auto-generated by piet-gpu-derive

struct CmdStrokeRef {
    uint offset;
};

struct CmdFillRef {
    uint offset;
};

struct CmdColorRef {
    uint offset;
};

struct CmdImageRef {
    uint offset;
};

struct CmdAlphaRef {
    uint offset;
};

struct CmdJumpRef {
    uint offset;
};

struct CmdRef {
    uint offset;
};

struct CmdStroke {
    uint tile_ref;
    float half_width;
};

#define CmdStroke_size 8

CmdStrokeRef CmdStroke_index(CmdStrokeRef ref, uint index) {
    return CmdStrokeRef(ref.offset + index * CmdStroke_size);
}

struct CmdFill {
    uint tile_ref;
    int backdrop;
};

#define CmdFill_size 8

CmdFillRef CmdFill_index(CmdFillRef ref, uint index) {
    return CmdFillRef(ref.offset + index * CmdFill_size);
}

struct CmdColor {
    uint rgba_color;
};

#define CmdColor_size 4

CmdColorRef CmdColor_index(CmdColorRef ref, uint index) {
    return CmdColorRef(ref.offset + index * CmdColor_size);
}

struct CmdImage {
    uint index;
    ivec2 offset;
};

#define CmdImage_size 8

CmdImageRef CmdImage_index(CmdImageRef ref, uint index) {
    return CmdImageRef(ref.offset + index * CmdImage_size);
}

struct CmdAlpha {
    float alpha;
};

#define CmdAlpha_size 4

CmdAlphaRef CmdAlpha_index(CmdAlphaRef ref, uint index) {
    return CmdAlphaRef(ref.offset + index * CmdAlpha_size);
}

struct CmdJump {
    uint new_ref;
};

#define CmdJump_size 4

CmdJumpRef CmdJump_index(CmdJumpRef ref, uint index) {
    return CmdJumpRef(ref.offset + index * CmdJump_size);
}

#define Cmd_End 0
#define Cmd_Fill 1
#define Cmd_Stroke 2
#define Cmd_Solid 3
#define Cmd_Alpha 4
#define Cmd_Color 5
#define Cmd_Image 6
#define Cmd_BeginClip 7
#define Cmd_EndClip 8
#define Cmd_Jump 9
#define Cmd_size 12

CmdRef Cmd_index(CmdRef ref, uint index) {
    return CmdRef(ref.offset + index * Cmd_size);
}

struct CmdTag {
   uint tag;
   uint flags;
};

CmdStroke CmdStroke_read(Alloc a, CmdStrokeRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    uint raw1 = read_mem(a, ix + 1);
    CmdStroke s;
    s.tile_ref = raw0;
    s.half_width = uintBitsToFloat(raw1);
    return s;
}

void CmdStroke_write(Alloc a, CmdStrokeRef ref, CmdStroke s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, s.tile_ref);
    write_mem(a, ix + 1, floatBitsToUint(s.half_width));
}

CmdFill CmdFill_read(Alloc a, CmdFillRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    uint raw1 = read_mem(a, ix + 1);
    CmdFill s;
    s.tile_ref = raw0;
    s.backdrop = int(raw1);
    return s;
}

void CmdFill_write(Alloc a, CmdFillRef ref, CmdFill s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, s.tile_ref);
    write_mem(a, ix + 1, uint(s.backdrop));
}

CmdColor CmdColor_read(Alloc a, CmdColorRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    CmdColor s;
    s.rgba_color = raw0;
    return s;
}

void CmdColor_write(Alloc a, CmdColorRef ref, CmdColor s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, s.rgba_color);
}

CmdImage CmdImage_read(Alloc a, CmdImageRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    uint raw1 = read_mem(a, ix + 1);
    CmdImage s;
    s.index = raw0;
    s.offset = ivec2(int(raw1 << 16) >> 16, int(raw1) >> 16);
    return s;
}

void CmdImage_write(Alloc a, CmdImageRef ref, CmdImage s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, s.index);
    write_mem(a, ix + 1, (uint(s.offset.x) & 0xffff) | (uint(s.offset.y) << 16));
}

CmdAlpha CmdAlpha_read(Alloc a, CmdAlphaRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    CmdAlpha s;
    s.alpha = uintBitsToFloat(raw0);
    return s;
}

void CmdAlpha_write(Alloc a, CmdAlphaRef ref, CmdAlpha s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, floatBitsToUint(s.alpha));
}

CmdJump CmdJump_read(Alloc a, CmdJumpRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = read_mem(a, ix + 0);
    CmdJump s;
    s.new_ref = raw0;
    return s;
}

void CmdJump_write(Alloc a, CmdJumpRef ref, CmdJump s) {
    uint ix = ref.offset >> 2;
    write_mem(a, ix + 0, s.new_ref);
}

CmdTag Cmd_tag(Alloc a, CmdRef ref) {
    uint tag_and_flags = read_mem(a, ref.offset >> 2);
    return CmdTag(tag_and_flags & 0xffff, tag_and_flags >> 16);
}

CmdFill Cmd_Fill_read(Alloc a, CmdRef ref) {
    return CmdFill_read(a, CmdFillRef(ref.offset + 4));
}

CmdStroke Cmd_Stroke_read(Alloc a, CmdRef ref) {
    return CmdStroke_read(a, CmdStrokeRef(ref.offset + 4));
}

CmdAlpha Cmd_Alpha_read(Alloc a, CmdRef ref) {
    return CmdAlpha_read(a, CmdAlphaRef(ref.offset + 4));
}

CmdColor Cmd_Color_read(Alloc a, CmdRef ref) {
    return CmdColor_read(a, CmdColorRef(ref.offset + 4));
}

CmdImage Cmd_Image_read(Alloc a, CmdRef ref) {
    return CmdImage_read(a, CmdImageRef(ref.offset + 4));
}

CmdJump Cmd_Jump_read(Alloc a, CmdRef ref) {
    return CmdJump_read(a, CmdJumpRef(ref.offset + 4));
}

void Cmd_End_write(Alloc a, CmdRef ref) {
    write_mem(a, ref.offset >> 2, Cmd_End);
}

void Cmd_Fill_write(Alloc a, CmdRef ref, CmdFill s) {
    write_mem(a, ref.offset >> 2, Cmd_Fill);
    CmdFill_write(a, CmdFillRef(ref.offset + 4), s);
}

void Cmd_Stroke_write(Alloc a, CmdRef ref, CmdStroke s) {
    write_mem(a, ref.offset >> 2, Cmd_Stroke);
    CmdStroke_write(a, CmdStrokeRef(ref.offset + 4), s);
}

void Cmd_Solid_write(Alloc a, CmdRef ref) {
    write_mem(a, ref.offset >> 2, Cmd_Solid);
}

void Cmd_Alpha_write(Alloc a, CmdRef ref, CmdAlpha s) {
    write_mem(a, ref.offset >> 2, Cmd_Alpha);
    CmdAlpha_write(a, CmdAlphaRef(ref.offset + 4), s);
}

void Cmd_Color_write(Alloc a, CmdRef ref, CmdColor s) {
    write_mem(a, ref.offset >> 2, Cmd_Color);
    CmdColor_write(a, CmdColorRef(ref.offset + 4), s);
}

void Cmd_Image_write(Alloc a, CmdRef ref, CmdImage s) {
    write_mem(a, ref.offset >> 2, Cmd_Image);
    CmdImage_write(a, CmdImageRef(ref.offset + 4), s);
}

void Cmd_BeginClip_write(Alloc a, CmdRef ref) {
    write_mem(a, ref.offset >> 2, Cmd_BeginClip);
}

void Cmd_EndClip_write(Alloc a, CmdRef ref) {
    write_mem(a, ref.offset >> 2, Cmd_EndClip);
}

void Cmd_Jump_write(Alloc a, CmdRef ref, CmdJump s) {
    write_mem(a, ref.offset >> 2, Cmd_Jump);
    CmdJump_write(a, CmdJumpRef(ref.offset + 4), s);
}