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Vulkan GLSL Ray Tracing Emulator
source link: https://www.gsn-lib.org/apps/raytracing/index.php
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Vulkan GLSL Ray Tracing Emulator
Ray Gen.
Closest-Hit
Miss
Intersection
Any-Hit
Acc. Structure Traversal
Hit?
No
Yes
// gsnShaderOptions: precompiler="GL_EXT_ray_tracing, recursion: 2, app: 1"
// IMPORTANT: do not remove the line above
/**** COMMON START ****/
// In the COMMON section, the structs "RayPayloadType" and "HitAttributeType" must be defined.
// Furthermore, your own helper functions must be defined here (can be called in all shaders).
struct RayPayloadType {
vec3 contribution;
vec3 nextRayOrigin;
vec3 nextRayDirection;
bool shadowRayMiss;
float weight;
}; // type of the "payload" variable
struct HitAttributeType {
vec3 normal;
vec3 texCoord;
}; // type of the "hit" variable
const float PI = 3.14159265359;
// light parameters
const vec3 lightPos = vec3(0.0f, 5.0f, -6.0f);
const vec3 lightColor = vec3(1.0, 1.0, 1.0f);
const float illumiPerp = 20.0;
// camera
const float cameraExposure = 0.05;
// PBR parameters BLAS 0
const float ambientFactor0 = 0.2f;
const vec3 baseCol0 = pow(vec3(1.0000, 0.8980, 0.6196), vec3(2.2));
const vec3 emission0 = pow(vec3(0.0, 0.0, 0.0), vec3(2.2));
const float roughness0 = 0.4;
const float metallic0 = 1.0;
const float reflectance0 = 1.0;
const float whittedReflection0 = 0.5;
// PBR parameters BLAS 1
const float ambientFactor1 = 0.2f;
const vec3 baseCol11 = pow(vec3(0.8, 0.3, 0.15), vec3(2.2));
const vec3 baseCol12 = pow(vec3(0.9, 0.85, 0.05), vec3(2.2));
const vec3 emission1 = pow(vec3(0.0, 0.0, 0.0), vec3(2.2));
const float roughness1 = 1.0;
const float metallic1 = 0.0;
const float reflectance1 = 0.5;
const float whittedReflection1 = 0.0;
vec3 fresnelSchlick(float cosTheta, vec3 F0) {
return F0 + (1.0 - F0) * pow(1.0 - cosTheta, 5.0);
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