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add test for sweetie shading

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This commit is contained in:
Dennis Ranke
2021-11-14 23:55:42 +01:00
parent a1b1c01d1d
commit dc74ff122c
1 changed files with 28 additions and 19 deletions
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47
examples/microw8/palette.cwa
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@@ -3,8 +3,24 @@ import "env.memory" memory(4);
import "env.pow" fn pow(f32, f32) -> f32;
import "env.sin" fn sin(f32) -> f32;
import "env.cos" fn cos(f32) -> f32;
import "env.atan2" fn atan2(f32, f32) -> f32;
import "env.rectangle" fn rect(f32, f32, f32, f32, i32);
//export fn tic(time: i32) {
// let i: i32;
// loop pixels {
// let lazy x = (i % 320) as f32 - 160.5;
// let lazy y = (i / 320 - 120) as f32;
//
// let lazy dist = 4000 as f32 / sqrt(x*x + y*y + 10 as f32);
// let lazy angle = atan2(x, y) * (64.0 / 3.141);
//
// i?120 = ((((dist + time as f32 / 63 as f32) as i32 ^ angle as i32) #% 32 + 32) >> ((dist as i32 - i % 7 * 3) / 40)) + 192;
//
// branch_if (i := i + 1) < 320*240: pixels;
// }
//}
export fn tic(time: i32) {
let i: i32;
loop colors {
@@ -13,25 +29,15 @@ export fn tic(time: i32) {
}
}
fn fcol(v: f32) -> i32 {
let lazy vi = v as i32;
select(vi < 0, 0, select(vi > 255, 255, vi))
}
fn col(f: f32, c: f32) -> i32 {
let lazy a = f * (c * -0.8 + 0.6);
let lazy b = f * f * 0.7;
fcol((a + b - a * b) * 255 as f32)
}
fn make_gradient(r: f32, g: f32, b: f32, base: i32) -> i32 {
fn make_gradient(c: f32, base: i32) -> i32 {
let i: i32;
loop colors {
let f = (i + 4) as f32 / 64 as f32;
(base + i)!(120+320*240) =
col(f, r) +
(col(f, g) << 8) +
(col(f, b) << 16);
let lazy f = (i + 4) as f32 / 64 as f32;
let lazy a = f * (c * -0.8 + 0.6);
let lazy b = f * f * 0.7;
let lazy v = ((a + b - a * b) * 255 as f32) as i32;
(base + i)?(120+320*240) = select(v < 0, 0, select(v > 255, 255, v));
branch_if (i := i + 4) < 64: colors;
}
@@ -42,10 +48,13 @@ start fn gen_palette() {
let i: i32;
loop hsv {
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 * 64);
let inline base2 = make_gradient(sin(a) * 0.707 - cos(a) * 0.804, i * 64);
let inline base3 = make_gradient(cos(a) * 0.816, base2);
make_gradient(cos(a) * 0.804 + sin(a) * 0.707, base3);
branch_if (i := i + 1) < 11: hsv;
}
make_gradient(0 as f32, 0 as f32, 0 as f32, 11*16*4);
make_gradient(0 as f32, make_gradient(0 as f32, make_gradient(0 as f32, 11*16*4)));
i = 255;
loop expand_sweetie {