From 8acb27a788f24f85f38cf4ca45f2c3124128fa26 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Tue, 8 Aug 2017 10:40:14 -0700 Subject: ray: add rudimentary gamma correction color banding has been quite visible, and somewhat expected with a direct conversion from the linear float color space to the 8-bit integral rgb color components. A simple lookup table is used here to non-linearly map the values, table generation is taken from Greg Ward's REAL PIXELS gem in Graphics Gems II. --- src/modules/ray/ray.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/modules') diff --git a/src/modules/ray/ray.c b/src/modules/ray/ray.c index 5a2dd40..c0c067e 100644 --- a/src/modules/ray/ray.c +++ b/src/modules/ray/ray.c @@ -112,7 +112,8 @@ static ray_scene_t scene = { .objects = objects, .lights = lights, .ambient_color = { .x = 1.0f, .y = 1.0f, .z = 1.0f }, - .ambient_brightness = .04f, + .ambient_brightness = .1f, + .gamma = .55f, }; static float r; -- cgit v1.2.1