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qr shader: fix aligner positioning, probably correct

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Crispy 2024-08-16 15:21:34 +02:00
parent bdb2c20d59
commit 7071a0189d
1 changed files with 13 additions and 18 deletions
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31
Assets/test/QRCode.shader
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@ -15,8 +15,9 @@ CGPROGRAM
#define VERSION _Version
#define WIDTH (17 + VERSION * 4)
#define ALIGNERS ((VERSION / 7) + 2)
#define ALIGNER_SPACING ((WIDTH - 13) / (ALIGNERS-1))
#define MISALIGNMENT ((WIDTH - 13) % (ALIGNERS-1))
#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)
#define EC_LEVEL_L 1
#define EC_LEVEL_M 0
@ -72,22 +73,14 @@ CGPROGRAM
// Aligners
if (VERSION > 1
&& (px > 8 || py > 8) // top left
&& (px < WIDTH - 9 || py > 8) // top right
&& (py < WIDTH - 9 || px > 8) // bottom left
&& (px > 12 || py > 12) // top left
&& (px < WIDTH - 13 || py > 12) // top right
&& (py < WIDTH - 13 || px > 12) // bottom left
) {
// if (MISALIGNMENT != 0) return PINK;
uint x = px + ALIGNER_SPACING - 4;// - MISALIGNMENT;
uint y = py + ALIGNER_SPACING - 4;// - MISALIGNMENT;
// if (px > WIDTH-15) x -= MISALIGNMENT;
// if (py > WIDTH-15) y -= MISALIGNMENT;
// if (px < 10) {
// x += MISALIGNMENT;
// }
// if (py < 10) {
// y += MISALIGNMENT;
// }
uint x = px + ALIGNER_SPACING - 4 - MISALIGNMENT;
uint y = py + ALIGNER_SPACING - 4 - MISALIGNMENT;
if (px < 15) x += MISALIGNMENT;
if (py < 15) y += MISALIGNMENT;
uint ax = x % ALIGNER_SPACING;
uint ay = y % ALIGNER_SPACING;
if (ax < 5 && ay < 5) {
@ -109,7 +102,9 @@ CGPROGRAM
uint column = (WIDTH - px - (px > 6))/2;
uint direction_up = column & 1;
return lerp(BLUE, PINK, column / (WIDTH/2.));
// return lerp(BLUE, PINK, column / (WIDTH/2.));
return lerp(BLUE, PINK, (px+py)&1);
// return float4((px/8 + py/8) & 1, (px/2 + py/2) & 1, (px/4 + py/4) & 1, 1);
// return direction_up;
return 0.5;
}