2024-08-16 10:06:39 +02:00
|
|
|
Shader "CrispyPin/QRCode" {
|
|
|
|
Properties {
|
|
|
|
[HideInInspector]
|
2024-08-17 12:24:04 +02:00
|
|
|
_("",2D)=""{}
|
|
|
|
_Version("Version", Range(1, 40)) = 1
|
2024-08-17 15:42:09 +02:00
|
|
|
_Mask("Mask type", Range(0, 7)) = 1
|
|
|
|
[Toggle]
|
|
|
|
_DisableMask("Hide mask", Integer) = 0
|
2024-08-17 14:24:02 +02:00
|
|
|
_TimeSlider("Time", Range(0, 250)) = 0
|
2024-08-16 10:06:39 +02:00
|
|
|
}
|
|
|
|
SubShader {
|
|
|
|
Tags { "RenderType"="Opaque" }
|
|
|
|
LOD 100
|
|
|
|
CGPROGRAM
|
|
|
|
#pragma surface s Standard
|
|
|
|
struct Input{float2 uv_;};
|
|
|
|
uint _Version;
|
2024-08-17 15:42:09 +02:00
|
|
|
uint _Mask;
|
|
|
|
bool _DisableMask;
|
2024-08-17 14:24:02 +02:00
|
|
|
float _TimeSlider;
|
2024-08-16 10:06:39 +02:00
|
|
|
|
|
|
|
#define VERSION _Version
|
2024-08-16 11:02:26 +02:00
|
|
|
#define WIDTH (17 + VERSION * 4)
|
2024-08-17 12:24:04 +02:00
|
|
|
#define PIXEL_WIDTH WIDTH
|
|
|
|
// #define PIXEL_WIDTH 177
|
2024-08-16 10:06:39 +02:00
|
|
|
#define ALIGNERS ((VERSION / 7) + 2)
|
2024-08-16 15:21:34 +02:00
|
|
|
#define ALIGNER_SPACING_IDEAL ((WIDTH - 13) / (ALIGNERS-1))
|
|
|
|
#define ALIGNER_SPACING (ALIGNER_SPACING_IDEAL + ALIGNER_SPACING_IDEAL % 2)
|
|
|
|
#define MISALIGNMENT ((WIDTH - 13) - ALIGNER_SPACING * ALIGNERS)
|
2024-08-17 14:24:02 +02:00
|
|
|
#define BIT_COUNT (WIDTH * WIDTH - 225 - (WIDTH - 17)*2)
|
|
|
|
#define TIME (_Time.y*24)
|
|
|
|
// #define TIME (uint)(_TimeSlider)
|
2024-08-16 10:06:39 +02:00
|
|
|
|
2024-08-16 14:46:24 +02:00
|
|
|
#define EC_LEVEL_L 1
|
|
|
|
#define EC_LEVEL_M 0
|
|
|
|
#define EC_LEVEL_Q 3
|
|
|
|
#define EC_LEVEL_H 2
|
|
|
|
|
|
|
|
#define EC_LEVEL EC_LEVEL_L
|
2024-08-17 15:42:09 +02:00
|
|
|
#define MASK_TYPE _Mask
|
|
|
|
// ECI_MODE 0100 = byte
|
|
|
|
#define ECI_MODE 4
|
2024-08-16 14:46:24 +02:00
|
|
|
|
|
|
|
static const uint FORMAT_BIT_SETS[32] = {0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0, 0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976, 0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b, 0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed};
|
|
|
|
#define FORMAT_BITS_RAW ((EC_LEVEL << 3) | MASK_TYPE)
|
|
|
|
#define FORMAT_BITS FORMAT_BIT_SETS[FORMAT_BITS_RAW]
|
2024-08-16 11:02:26 +02:00
|
|
|
|
2024-08-16 10:06:39 +02:00
|
|
|
/*
|
|
|
|
v = 15
|
|
|
|
width = 77
|
|
|
|
aligners = 4
|
|
|
|
spacing = (77-13)/3
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define WHITE 1
|
|
|
|
#define BLACK 0
|
2024-08-17 12:24:04 +02:00
|
|
|
#define PINK float3(1, .3, .5)
|
|
|
|
#define BLUE float3(0, .4, .7)
|
2024-08-16 10:06:39 +02:00
|
|
|
|
2024-08-17 12:24:04 +02:00
|
|
|
float3 finder_pattern(uint x, uint y) {
|
2024-08-16 10:06:39 +02:00
|
|
|
if (x < 6 && x > 0 && y < 6 && y > 0) return !(x < 5 && x > 1 && y < 5 && y > 1);
|
|
|
|
return (x > 6 || y > 6);
|
|
|
|
}
|
|
|
|
|
2024-08-17 12:24:04 +02:00
|
|
|
float3 main (float2 uv){
|
2024-08-17 15:42:09 +02:00
|
|
|
// hell_o wo_rld!
|
2024-08-16 10:06:39 +02:00
|
|
|
const uint data[] = {0x68656c6c,0x6f20776f,0x726c6421};
|
2024-08-17 15:42:09 +02:00
|
|
|
const uint data_len = 12;
|
2024-08-16 10:06:39 +02:00
|
|
|
uv.y = 1 - uv.y;
|
|
|
|
uv = uv * 1.5 - 0.25;
|
|
|
|
// Quiet zone
|
2024-08-17 15:42:09 +02:00
|
|
|
if (uv.x < 0 || uv.x > 1 || uv.y < 0 || uv.y > 1) return 2;
|
2024-08-16 10:06:39 +02:00
|
|
|
|
2024-08-17 12:24:04 +02:00
|
|
|
uint px = uv.x * PIXEL_WIDTH;
|
|
|
|
uint py = uv.y * PIXEL_WIDTH;
|
2024-08-16 10:06:39 +02:00
|
|
|
|
|
|
|
// Finder patterns
|
|
|
|
if (px < 8 && py < 8) return finder_pattern(px, py);
|
|
|
|
if (px < 8 && py > WIDTH - 9) return finder_pattern(px, py - WIDTH + 7);
|
|
|
|
if (px > WIDTH - 9 && py < 8) return finder_pattern(px - WIDTH + 7, py);
|
|
|
|
|
2024-08-16 11:02:26 +02:00
|
|
|
// filler pixel
|
|
|
|
if (px == 8 && py == WIDTH - 8) return 0;
|
|
|
|
|
2024-08-16 10:06:39 +02:00
|
|
|
// Timing patterns
|
|
|
|
if (px == 6) return py & 1;
|
|
|
|
if (py == 6) return px & 1;
|
|
|
|
|
|
|
|
// Aligners
|
|
|
|
if (VERSION > 1
|
2024-08-16 15:21:34 +02:00
|
|
|
&& (px > 12 || py > 12) // top left
|
|
|
|
&& (px < WIDTH - 13 || py > 12) // top right
|
|
|
|
&& (py < WIDTH - 13 || px > 12) // bottom left
|
2024-08-16 10:06:39 +02:00
|
|
|
) {
|
2024-08-17 12:24:04 +02:00
|
|
|
uint x = px + ALIGNER_SPACING - 4;
|
|
|
|
uint y = py + ALIGNER_SPACING - 4;
|
|
|
|
if (px > 12) x -= MISALIGNMENT;
|
|
|
|
if (py > 12) y -= MISALIGNMENT;
|
|
|
|
x %= ALIGNER_SPACING;
|
|
|
|
y %= ALIGNER_SPACING;
|
|
|
|
if (x < 5 && y < 5) {
|
|
|
|
return (x < 4 && x > 0 && y < 4 && y > 0 && !(x == 2 && y == 2));
|
2024-08-16 10:06:39 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Format bits
|
2024-08-16 14:46:24 +02:00
|
|
|
// left
|
|
|
|
if (px < 6 && py == 8) return (FORMAT_BITS & (1 << (14 - px))) == 0;
|
|
|
|
if (px == 7 && py == 8) return (FORMAT_BITS & (1 << 8)) == 0;
|
|
|
|
// right
|
|
|
|
if (px > WIDTH - 9 && py == 8) return (FORMAT_BITS & (1 << (WIDTH - 1 - px))) == 0;
|
|
|
|
// top
|
|
|
|
if (px == 8 && py < 6) return (FORMAT_BITS & (1 << py)) == 0;
|
|
|
|
if (px == 8 && py < 9) return (FORMAT_BITS & (1 << (py-1))) == 0;
|
|
|
|
// bottom
|
|
|
|
if (px == 8 && py > WIDTH - 8) return (FORMAT_BITS & (1 << py + 15 - WIDTH)) == 0;
|
2024-08-16 10:06:39 +02:00
|
|
|
|
2024-08-17 14:24:02 +02:00
|
|
|
// data bit layout
|
|
|
|
uint column = (WIDTH - px - (px < 6)-1)/2;
|
|
|
|
uint direction_up = column % 2 == 0;
|
|
|
|
uint full_columns = column > 4 ? column - 4 : 0;
|
|
|
|
full_columns = min(full_columns, VERSION*2);
|
|
|
|
// the 4 columns under the right finder
|
|
|
|
uint short_columns = min(column, 4);
|
|
|
|
// between the left two finder patterns
|
|
|
|
uint tiny_columns = column > (VERSION*2 + 4) ? column - (VERSION*2 + 4) : 0;
|
|
|
|
uint bit_index = full_columns * (WIDTH - 1) * 2;
|
|
|
|
bit_index += short_columns * (WIDTH - 9) * 2;
|
|
|
|
bit_index += tiny_columns * (WIDTH - 17) * 2;
|
|
|
|
bit_index += (px + (px < 6)) % 2;
|
|
|
|
|
|
|
|
if (direction_up) {
|
|
|
|
bit_index += (WIDTH - py - 1 - (py < 7)) * 2;
|
|
|
|
} else {// direction down
|
|
|
|
const uint diff = (full_columns == 0) ? 9 : (py > 6);
|
|
|
|
bit_index += (py - diff)*2;
|
|
|
|
}
|
|
|
|
if (px < 9) bit_index -= 16; // rightmost tiny column
|
|
|
|
|
2024-08-17 15:42:09 +02:00
|
|
|
// data
|
|
|
|
uint bit = 0;
|
|
|
|
if (bit_index < 4){
|
|
|
|
bit = (ECI_MODE >> (3-bit_index))&1;
|
|
|
|
} else if (bit_index < 12) {
|
|
|
|
bit = (data_len >> (7 - (bit_index - 4))) & 1;
|
|
|
|
} else if (bit_index < data_len*8 + 12){
|
|
|
|
uint data_bit_index = bit_index - 12;
|
|
|
|
bit = ((data[data_bit_index/32] >> (31-(data_bit_index % 32))) & 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
// mask
|
|
|
|
uint mask;
|
|
|
|
switch (_Mask){
|
|
|
|
case 0:
|
|
|
|
mask = (px+py) % 2 == 0;
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
mask = py % 2 == 0;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
mask = px % 3 == 0;
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
mask = (px+py) % 3 == 0;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
mask = (py/2 + px/3) % 2 == 0;
|
|
|
|
break;
|
|
|
|
case 5:
|
|
|
|
mask = (py*px)%2 + (px*py)%3 == 0;
|
|
|
|
break;
|
|
|
|
case 6:
|
|
|
|
mask = ((py*px)%2 + (px*py)%3) % 2 == 0;
|
|
|
|
break;
|
|
|
|
case 7:
|
|
|
|
mask = ((py+px)%2 + (px*py)%3) % 2 == 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!_DisableMask) {
|
|
|
|
bit ^= mask;
|
|
|
|
}
|
|
|
|
|
|
|
|
return !bit;
|
|
|
|
|
|
|
|
// // bit index debugging worm
|
|
|
|
// uint worm = abs(TIME % BIT_COUNT - bit_index);
|
|
|
|
// const uint length = 4;
|
|
|
|
// if (worm < length) return BLUE * (worm/(float)length);
|
|
|
|
// return (float)(bit_index%BIT_COUNT)/(float)BIT_COUNT;
|
2024-08-16 10:06:39 +02:00
|
|
|
}
|
|
|
|
|
2024-08-16 11:02:26 +02:00
|
|
|
void s (Input IN, inout SurfaceOutputStandard o) { o.Albedo = main(IN.uv_); }
|
2024-08-16 10:06:39 +02:00
|
|
|
ENDCG
|
|
|
|
}}
|