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+ | Fog imGUI

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TheRedShip
2025-01-14 20:38:03 +01:00
parent 95098711f7
commit 2899055b51
9 changed files with 103 additions and 36 deletions
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42
shaders/compute.glsl
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@ -32,14 +32,23 @@ struct GPUMaterial
struct GPUCamera
{
mat4 view_matrix;
vec3 position;
mat4 view_matrix;
vec3 position;
float aperture_size;
float focus_distance;
float fov;
float aperture_size;
float focus_distance;
float fov;
int bounce;
};
int bounce;
struct GPUVolume
{
vec3 sigma_a; // absorption coefficient
vec3 sigma_s; // scattering coefficient
vec3 sigma_t; // extinction coefficient
float g; // phase function parameter
bool enabled;
};
layout(std430, binding = 1) buffer ObjectBuffer
@ -52,11 +61,16 @@ layout(std430, binding = 2) buffer MaterialBuffer
GPUMaterial materials[];
};
layout(std140) uniform CameraData
layout(std140, binding = 0) uniform CameraData
{
GPUCamera camera;
};
layout(std140, binding = 1) uniform VolumeData
{
GPUVolume volume;
};
uniform int u_objectsNum;
uniform vec2 u_resolution;
uniform int u_pixelisation;
@ -148,31 +162,25 @@ vec3 pathtrace(Ray ray, inout uint rng_state)
vec3 transmittance = vec3(1.0);
VolumeProperties volume;
volume.sigma_a = vec3(0.0001);
volume.sigma_s = vec3(0.0800);
volume.sigma_t = volume.sigma_a + volume.sigma_s;
volume.g = 1.;
for (int i = 0; i < camera.bounce; i++)
{
hitInfo hit = traceRay(ray);
float t_scatter = 0.0;
if (atmosScatter(volume, hit, t_scatter, rng_state))
if (volume.enabled && atmosScatter(hit, t_scatter, rng_state))
{
calculateVolumetricLight(t_scatter, volume, ray, color, light, transmittance, rng_state);
calculateVolumetricLight(t_scatter, ray, color, light, transmittance, rng_state);
continue;
}
if (hit.obj_index == -1)
{
light += transmittance * GetEnvironmentLight(ray);
// light += vec3(135 / 255.0f, 206 / 255.0f, 235 / 255.0f); //ambient color
break;
}
transmittance *= exp(-volume.sigma_t * hit.t);
if (volume.enabled)
transmittance *= exp(-volume.sigma_t * hit.t);
GPUObject obj = objects[hit.obj_index];
GPUMaterial mat = materials[obj.mat_index];