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

struct CmdCircleRef {
    uint offset;
};

struct CmdLineRef {
    uint offset;
};

struct CmdStrokeRef {
    uint offset;
};

struct CmdFillRef {
    uint offset;
};

struct CmdFillEdgeRef {
    uint offset;
};

struct CmdDrawFillRef {
    uint offset;
};

struct CmdSolidRef {
    uint offset;
};

struct CmdJumpRef {
    uint offset;
};

struct CmdRef {
    uint offset;
};

struct SegmentRef {
    uint offset;
};

struct SegChunkRef {
    uint offset;
};

struct CmdCircle {
    vec2 center;
    float radius;
    uint rgba_color;
};

#define CmdCircle_size 16

CmdCircleRef CmdCircle_index(CmdCircleRef ref, uint index) {
    return CmdCircleRef(ref.offset + index * CmdCircle_size);
}

struct CmdLine {
    vec2 start;
    vec2 end;
};

#define CmdLine_size 16

CmdLineRef CmdLine_index(CmdLineRef ref, uint index) {
    return CmdLineRef(ref.offset + index * CmdLine_size);
}

struct CmdStroke {
    uint seg_ref;
    float half_width;
    uint rgba_color;
};

#define CmdStroke_size 12

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

struct CmdFill {
    uint seg_ref;
    int backdrop;
    uint rgba_color;
};

#define CmdFill_size 12

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

struct CmdFillEdge {
    int sign;
    float y;
};

#define CmdFillEdge_size 8

CmdFillEdgeRef CmdFillEdge_index(CmdFillEdgeRef ref, uint index) {
    return CmdFillEdgeRef(ref.offset + index * CmdFillEdge_size);
}

struct CmdDrawFill {
    int backdrop;
    uint rgba_color;
};

#define CmdDrawFill_size 8

CmdDrawFillRef CmdDrawFill_index(CmdDrawFillRef ref, uint index) {
    return CmdDrawFillRef(ref.offset + index * CmdDrawFill_size);
}

struct CmdSolid {
    uint rgba_color;
};

#define CmdSolid_size 4

CmdSolidRef CmdSolid_index(CmdSolidRef ref, uint index) {
    return CmdSolidRef(ref.offset + index * CmdSolid_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_Circle 1
#define Cmd_Line 2
#define Cmd_Fill 3
#define Cmd_Stroke 4
#define Cmd_FillEdge 5
#define Cmd_DrawFill 6
#define Cmd_Solid 7
#define Cmd_Jump 8
#define Cmd_Bail 9
#define Cmd_size 20

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

struct Segment {
    vec2 start;
    vec2 end;
};

#define Segment_size 16

SegmentRef Segment_index(SegmentRef ref, uint index) {
    return SegmentRef(ref.offset + index * Segment_size);
}

struct SegChunk {
    uint n;
    SegChunkRef next;
};

#define SegChunk_size 8

SegChunkRef SegChunk_index(SegChunkRef ref, uint index) {
    return SegChunkRef(ref.offset + index * SegChunk_size);
}

CmdCircle CmdCircle_read(CmdCircleRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    uint raw2 = ptcl[ix + 2];
    uint raw3 = ptcl[ix + 3];
    CmdCircle s;
    s.center = vec2(uintBitsToFloat(raw0), uintBitsToFloat(raw1));
    s.radius = uintBitsToFloat(raw2);
    s.rgba_color = raw3;
    return s;
}

void CmdCircle_write(CmdCircleRef ref, CmdCircle s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = floatBitsToUint(s.center.x);
    ptcl[ix + 1] = floatBitsToUint(s.center.y);
    ptcl[ix + 2] = floatBitsToUint(s.radius);
    ptcl[ix + 3] = s.rgba_color;
}

CmdLine CmdLine_read(CmdLineRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    uint raw2 = ptcl[ix + 2];
    uint raw3 = ptcl[ix + 3];
    CmdLine s;
    s.start = vec2(uintBitsToFloat(raw0), uintBitsToFloat(raw1));
    s.end = vec2(uintBitsToFloat(raw2), uintBitsToFloat(raw3));
    return s;
}

void CmdLine_write(CmdLineRef ref, CmdLine s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = floatBitsToUint(s.start.x);
    ptcl[ix + 1] = floatBitsToUint(s.start.y);
    ptcl[ix + 2] = floatBitsToUint(s.end.x);
    ptcl[ix + 3] = floatBitsToUint(s.end.y);
}

CmdStroke CmdStroke_read(CmdStrokeRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    uint raw2 = ptcl[ix + 2];
    CmdStroke s;
    s.seg_ref = raw0;
    s.half_width = uintBitsToFloat(raw1);
    s.rgba_color = raw2;
    return s;
}

void CmdStroke_write(CmdStrokeRef ref, CmdStroke s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = s.seg_ref;
    ptcl[ix + 1] = floatBitsToUint(s.half_width);
    ptcl[ix + 2] = s.rgba_color;
}

CmdFill CmdFill_read(CmdFillRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    uint raw2 = ptcl[ix + 2];
    CmdFill s;
    s.seg_ref = raw0;
    s.backdrop = int(raw1);
    s.rgba_color = raw2;
    return s;
}

void CmdFill_write(CmdFillRef ref, CmdFill s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = s.seg_ref;
    ptcl[ix + 1] = uint(s.backdrop);
    ptcl[ix + 2] = s.rgba_color;
}

CmdFillEdge CmdFillEdge_read(CmdFillEdgeRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    CmdFillEdge s;
    s.sign = int(raw0);
    s.y = uintBitsToFloat(raw1);
    return s;
}

void CmdFillEdge_write(CmdFillEdgeRef ref, CmdFillEdge s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = uint(s.sign);
    ptcl[ix + 1] = floatBitsToUint(s.y);
}

CmdDrawFill CmdDrawFill_read(CmdDrawFillRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    CmdDrawFill s;
    s.backdrop = int(raw0);
    s.rgba_color = raw1;
    return s;
}

void CmdDrawFill_write(CmdDrawFillRef ref, CmdDrawFill s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = uint(s.backdrop);
    ptcl[ix + 1] = s.rgba_color;
}

CmdSolid CmdSolid_read(CmdSolidRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    CmdSolid s;
    s.rgba_color = raw0;
    return s;
}

void CmdSolid_write(CmdSolidRef ref, CmdSolid s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = s.rgba_color;
}

CmdJump CmdJump_read(CmdJumpRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    CmdJump s;
    s.new_ref = raw0;
    return s;
}

void CmdJump_write(CmdJumpRef ref, CmdJump s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = s.new_ref;
}

uint Cmd_tag(CmdRef ref) {
    return ptcl[ref.offset >> 2];
}

CmdCircle Cmd_Circle_read(CmdRef ref) {
    return CmdCircle_read(CmdCircleRef(ref.offset + 4));
}

CmdLine Cmd_Line_read(CmdRef ref) {
    return CmdLine_read(CmdLineRef(ref.offset + 4));
}

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

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

CmdFillEdge Cmd_FillEdge_read(CmdRef ref) {
    return CmdFillEdge_read(CmdFillEdgeRef(ref.offset + 4));
}

CmdDrawFill Cmd_DrawFill_read(CmdRef ref) {
    return CmdDrawFill_read(CmdDrawFillRef(ref.offset + 4));
}

CmdSolid Cmd_Solid_read(CmdRef ref) {
    return CmdSolid_read(CmdSolidRef(ref.offset + 4));
}

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

void Cmd_End_write(CmdRef ref) {
    ptcl[ref.offset >> 2] = Cmd_End;
}

void Cmd_Circle_write(CmdRef ref, CmdCircle s) {
    ptcl[ref.offset >> 2] = Cmd_Circle;
    CmdCircle_write(CmdCircleRef(ref.offset + 4), s);
}

void Cmd_Line_write(CmdRef ref, CmdLine s) {
    ptcl[ref.offset >> 2] = Cmd_Line;
    CmdLine_write(CmdLineRef(ref.offset + 4), s);
}

void Cmd_Fill_write(CmdRef ref, CmdFill s) {
    ptcl[ref.offset >> 2] = Cmd_Fill;
    CmdFill_write(CmdFillRef(ref.offset + 4), s);
}

void Cmd_Stroke_write(CmdRef ref, CmdStroke s) {
    ptcl[ref.offset >> 2] = Cmd_Stroke;
    CmdStroke_write(CmdStrokeRef(ref.offset + 4), s);
}

void Cmd_FillEdge_write(CmdRef ref, CmdFillEdge s) {
    ptcl[ref.offset >> 2] = Cmd_FillEdge;
    CmdFillEdge_write(CmdFillEdgeRef(ref.offset + 4), s);
}

void Cmd_DrawFill_write(CmdRef ref, CmdDrawFill s) {
    ptcl[ref.offset >> 2] = Cmd_DrawFill;
    CmdDrawFill_write(CmdDrawFillRef(ref.offset + 4), s);
}

void Cmd_Solid_write(CmdRef ref, CmdSolid s) {
    ptcl[ref.offset >> 2] = Cmd_Solid;
    CmdSolid_write(CmdSolidRef(ref.offset + 4), s);
}

void Cmd_Jump_write(CmdRef ref, CmdJump s) {
    ptcl[ref.offset >> 2] = Cmd_Jump;
    CmdJump_write(CmdJumpRef(ref.offset + 4), s);
}

void Cmd_Bail_write(CmdRef ref) {
    ptcl[ref.offset >> 2] = Cmd_Bail;
}

Segment Segment_read(SegmentRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    uint raw2 = ptcl[ix + 2];
    uint raw3 = ptcl[ix + 3];
    Segment s;
    s.start = vec2(uintBitsToFloat(raw0), uintBitsToFloat(raw1));
    s.end = vec2(uintBitsToFloat(raw2), uintBitsToFloat(raw3));
    return s;
}

void Segment_write(SegmentRef ref, Segment s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = floatBitsToUint(s.start.x);
    ptcl[ix + 1] = floatBitsToUint(s.start.y);
    ptcl[ix + 2] = floatBitsToUint(s.end.x);
    ptcl[ix + 3] = floatBitsToUint(s.end.y);
}

SegChunk SegChunk_read(SegChunkRef ref) {
    uint ix = ref.offset >> 2;
    uint raw0 = ptcl[ix + 0];
    uint raw1 = ptcl[ix + 1];
    SegChunk s;
    s.n = raw0;
    s.next = SegChunkRef(raw1);
    return s;
}

void SegChunk_write(SegChunkRef ref, SegChunk s) {
    uint ix = ref.offset >> 2;
    ptcl[ix + 0] = s.n;
    ptcl[ix + 1] = s.next.offset;
}