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add defocus blur

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This commit is contained in:
Fabien Freling 2021-05-27 23:02:42 +02:00
parent d6ba8e354c
commit 2ab82d4c92
2 changed files with 40 additions and 11 deletions
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17
in_one_weekend/src/main.zig
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@ -123,12 +123,19 @@ pub fn main() anyerror!void {
const world = World{ .spheres = spheres[0..spheres.len] };
// Camera
const lookFrom = Point3{ .x = 3, .y = 3, .z = 2 };
const lookAt = Point3{ .x = 0, .y = 0, .z = -1 };
const vup = Vec3{ .x = 0, .y = 1, .z = 0 };
const distToFocus = lookFrom.sub(lookAt).length();
const aperture = 2.0;
const camera = Camera.init(
Point3{ .x = -2, .y = 2, .z = 1 },
Point3{ .x = 0, .y = 0, .z = -1 },
Vec3{ .x = 0, .y = 1, .z = 0 },
lookFrom,
lookAt,
vup,
20.0,
aspectRatio
aspectRatio,
aperture,
distToFocus
);
const window = sdl.c.SDL_CreateWindow(
@ -186,7 +193,7 @@ pub fn main() anyerror!void {
const u = (@intToFloat(f32, i) + prng.random.float(f32)) / @intToFloat(f32, (imageWidth - 1));
const v = (@intToFloat(f32, j) + prng.random.float(f32)) / @intToFloat(f32, (imageHeight - 1));
const r = camera.getRay(u, v);
const r = camera.getRay(u, v, &prng.random);
const sample = rayColor(r, world, &prng.random, maxDepth);
pixelColor.* = pixelColor.*.add(sample);