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add sweetie palette

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This commit is contained in:
Dennis Ranke
2021-11-14 23:36:54 +01:00
parent fb057bec11
commit a1b1c01d1d
1 changed files with 42 additions and 6 deletions
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48
examples/microw8/palette.cwa
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@@ -24,25 +24,61 @@ fn col(f: f32, c: f32) -> i32 {
fcol((a + b - a * b) * 255 as f32) fcol((a + b - a * b) * 255 as f32)
} }
fn make_gradient(r: f32, g: f32, b: f32, base: i32) { fn make_gradient(r: f32, g: f32, b: f32, base: i32) -> i32 {
let i: i32; let i: i32;
loop colors { loop colors {
let f = (i + 1) as f32 / 16 as f32; let f = (i + 4) as f32 / 64 as f32;
((base + i) * 4)!(120+320*240) = (base + i)!(120+320*240) =
col(f, r) + col(f, r) +
(col(f, g) << 8) + (col(f, g) << 8) +
(col(f, b) << 16); (col(f, b) << 16);
branch_if (i := i + 1) < 16: colors; branch_if (i := i + 4) < 64: colors;
} }
base + 1
} }
start fn gen_palette() { start fn gen_palette() {
let i: i32; let i: i32;
loop hsv { loop hsv {
let a = i as f32 * (3.141 / 6.0); let a = i as f32 * (3.141 / 6.0);
make_gradient(sin(a) * 0.707 - cos(a) * 0.804, cos(a) * 0.816, cos(a) * 0.804 + sin(a) * 0.707, i * 16); make_gradient(sin(a) * 0.707 - cos(a) * 0.804, cos(a) * 0.816, cos(a) * 0.804 + sin(a) * 0.707, i * 64);
branch_if (i := i + 1) < 11: hsv; branch_if (i := i + 1) < 11: hsv;
} }
make_gradient(0 as f32, 0 as f32, 0 as f32, 11*16); make_gradient(0 as f32, 0 as f32, 0 as f32, 11*16*4);
i = 255;
loop expand_sweetie {
let lazy channel = i & 3;
let lazy index = i >> 2;
let lazy first_step = index >= 32;
let inline src1 = select(first_step, index % 32 / 2, index * 2);
let inline src2 = select(first_step, (index + 1) % 32 / 2, index * 2 + 1);
let inline c1 = (src1 * 4 + channel)?(120+320*240+192*4);
let inline c2 = (src2 * 4 + channel)?(120+320*240+192*4);
i?(120+320*240+192*4) = (c1 + c2) * (3 + first_step) / 8;
branch_if (i := i - 1) >= 0: expand_sweetie;
}
}
data 120+320*240+192*4 {
i32(
0x2c1c1a,
0x5d275d,
0x533eb1,
0x577def,
0x75cdff,
0x70f0a7,
0x64b738,
0x797125,
0x6f3629,
0xc95d3b,
0xf6a641,
0xf7ef73,
0xf4f4f4,
0xc2b094,
0x866c56,
0x573c33
)
} }