procedural-3d-engine/data/shaders/glsl/raytracingbasic/raygen.rgen
Sascha Willems ee946e2abf
Update ray tracing samples to use VK_KHR_ray_tracing (#753)
* Started updating ray tracing samples to KHR extension

* Updated GLSL shaders to use GL_EXT_ray_tracing

* Code cleanup, naming

* Fix include directories to use Vulkan headers from repository instead of NDK for the Android build

* Added new Android function pointers

* Renamed basic ray tracing sample

Added android build files

* Remove unused batch file

* Replaced remaining NV identifiers

* Updating ray tracing shadow sample to KHR extension

* Updated shaders to use KHR instead of NV extension

Fixed shader bindings

* Updating ray tracing reflections sample to KHR extension

* Renamed ray tracing reflections sample

* Renamed ray tracing shadows sample

Added android build files

* Removed no-longer used batch files for shader generation

* Proper alignment for the shader binding table

* Updated readme

* Reworked shader group setup

* Cleanup

* Reworked shader group setup

* Reworked shader group setup

* Code cleanup
2020-08-15 17:59:02 +02:00

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#version 460
#extension GL_EXT_ray_tracing : enable
layout(binding = 0, set = 0) uniform accelerationStructureEXT topLevelAS;
layout(binding = 1, set = 0, rgba8) uniform image2D image;
layout(binding = 2, set = 0) uniform CameraProperties
{
mat4 viewInverse;
mat4 projInverse;
} cam;
layout(location = 0) rayPayloadEXT vec3 hitValue;
void main()
{
const vec2 pixelCenter = vec2(gl_LaunchIDEXT.xy) + vec2(0.5);
const vec2 inUV = pixelCenter/vec2(gl_LaunchSizeEXT.xy);
vec2 d = inUV * 2.0 - 1.0;
vec4 origin = cam.viewInverse * vec4(0,0,0,1);
vec4 target = cam.projInverse * vec4(d.x, d.y, 1, 1) ;
vec4 direction = cam.viewInverse*vec4(normalize(target.xyz), 0) ;
float tmin = 0.001;
float tmax = 10000.0;
hitValue = vec3(0.0);
traceRayEXT(topLevelAS, gl_RayFlagsOpaqueEXT, 0xff, 0, 0, 0, origin.xyz, tmin, direction.xyz, tmax, 0);
imageStore(image, ivec2(gl_LaunchIDEXT.xy), vec4(hitValue, 0.0));
}