veloren/assets/voxygen/shaders/include/globals.glsl
2023-10-13 13:17:52 +02:00

77 lines
2.1 KiB
GLSL

#ifndef GLOBALS_GLSL
#define GLOBALS_GLSL
layout(std140, set = 0, binding = 0) uniform u_globals {
mat4 view_mat;
mat4 proj_mat;
mat4 all_mat;
vec4 cam_pos;
vec4 focus_off;
vec4 focus_pos;
vec4 view_distance;
// .x = time of day, repeats every day.
// .y = a continuous value for what day it is. Repeats every `tick_overflow` for precisions sake.
vec4 time_of_day;
vec4 sun_dir;
vec4 moon_dir;
// .x = The `Time` resource, repeated every `tick_overflow`
// .y = a floored (`Time` / `tick_overflow`)
// .z = Time local to client, not synced between clients.
vec4 tick;
vec4 screen_res;
uvec4 light_shadow_count;
vec4 shadow_proj_factors;
uvec4 medium;
ivec4 select_pos;
vec4 gamma_exposure;
vec4 last_lightning;
vec2 wind_vel;
float ambiance;
// 0 - FirstPerson
// 1 - ThirdPerson
uint cam_mode;
float sprite_render_distance;
float globals_dummy; // Fix alignment.
};
// Specifies the pattern used in the player dithering
mat4 threshold_matrix = mat4(
vec4(1.0 / 17.0, 9.0 / 17.0, 3.0 / 17.0, 11.0 / 17.0),
vec4(13.0 / 17.0, 5.0 / 17.0, 15.0 / 17.0, 7.0 / 17.0),
vec4(4.0 / 17.0, 12.0 / 17.0, 2.0 / 17.0, 10.0 / 17.0),
vec4(16.0 / 17.0, 8.0 / 17.0, 14.0 / 17.0, 6.0 / 17.0)
);
float distance_divider = 2;
float shadow_dithering = 0.5;
float tick_overflow = 300000.0;
// Get a scaled time with an offset that loops at a period.
float tick_loop(float period, float scale, float offset) {
float loop = tick_overflow * scale;
float rem = mod(loop, period);
float rest = rem * tick.y;
return mod(rest + tick.x * scale + offset, period);
}
float tick_loop(float period) {
return tick_loop(period, 1.0, 0.0);
}
vec4 tick_loop4(float period, vec4 scale, vec4 offset) {
vec4 loop = tick_overflow * scale;
vec4 rem = mod(loop, period);
vec4 rest = rem * tick.y;
return mod(rest + tick.x * scale + offset, period);
}
// Only works if t happened within tick_overflow
float time_since(float t) {
return tick.x < t ? (tick_overflow - t + tick.x) : (tick.x - t);
}
#endif