#!amber

DEVICE_EXTENSION VK_KHR_acceleration_structure
DEVICE_EXTENSION VK_KHR_ray_tracing_pipeline
DEVICE_EXTENSION VK_KHR_buffer_device_address
DEVICE_EXTENSION VK_KHR_pipeline_library
DEVICE_FEATURE   RayTracingPipelineFeaturesKHR.rayTracingPipeline
DEVICE_FEATURE   AccelerationStructureFeaturesKHR.accelerationStructure
DEVICE_FEATURE   BufferDeviceAddressFeatures.bufferDeviceAddress

SHADER ray_generation raygen1 GLSL
  #version 460 core
  #extension GL_EXT_ray_tracing : require
  layout(location = 0) rayPayloadEXT int payload;
  layout(set = 0, binding = 0) uniform accelerationStructureEXT topLevelAS1;
  layout(set = 0, binding = 1) uniform accelerationStructureEXT topLevelAS2;
  layout(set = 0, binding = 2, r32i) uniform iimage1D result;
  void main()
  {
    float TMin      = 0.1;
    float TMax      = 10;
    uint  flags     = gl_RayFlagsNoneEXT;
    uint  mask      = 0xFF;
    int   index     = int(gl_LaunchIDEXT.x);
    vec3  Origin    = vec3(0, 0, 0);
    vec3  Direction = vec3(0, 0, 1);

    payload = -1;
    if (index % 3 == 0) {
      traceRayEXT(topLevelAS1, flags, mask, 0, 0, 0, Origin, TMin, Direction, TMax, 0);
    } else {
      traceRayEXT(topLevelAS2, flags, mask, 0, 0, 0, Origin, TMin, Direction, TMax, 0);
    }
    imageStore(result, index, ivec4(payload + index, 0u, 0u, 0u));
  }
END

SHADER miss miss1 GLSL
  #version 460 core
  #extension GL_EXT_ray_tracing : require
  layout(location = 0) rayPayloadInEXT int payload;
  void main()
  {
    payload = 10;
  }
END

SHADER closest_hit closesthit1 GLSL
  #version 460 core
  #extension GL_EXT_ray_tracing : require
  layout(location = 0) rayPayloadInEXT int payload;
  void main()
  {
    payload = 20;
  }
END

ACCELERATION_STRUCTURE BOTTOM_LEVEL triangle_blas
  GEOMETRY TRIANGLES
    0.0 -0.75 1.0
    -0.75 0.75 1.0
    0.75 0.75 1.0
  END
END
ACCELERATION_STRUCTURE TOP_LEVEL triangle_tlas
  BOTTOM_LEVEL_INSTANCE triangle_blas END
END

ACCELERATION_STRUCTURE TOP_LEVEL triangle_tlas2
  BOTTOM_LEVEL_INSTANCE triangle_blas
    TRANSFORM
      1 0 0  0.0
      0 1 0  0.0
      0 0 1 -2.0
    END
  END
END

IMAGE outbuf FORMAT R32_SINT DIM_1D WIDTH 6 FILL 0

PIPELINE raytracing my_rtpipeline
  BIND ACCELERATION_STRUCTURE triangle_tlas DESCRIPTOR_SET 0 BINDING 0
  BIND ACCELERATION_STRUCTURE triangle_tlas2 DESCRIPTOR_SET 0 BINDING 1
  BIND BUFFER outbuf AS storage_image DESCRIPTOR_SET 0 BINDING 2
  SHADER_GROUP g_rgen raygen1
  SHADER_GROUP g_miss miss1
  SHADER_GROUP g_hits closesthit1
  SHADER_BINDING_TABLE sbt_raygen
    g_rgen
  END
  SHADER_BINDING_TABLE sbt_miss
    g_miss
  END
  SHADER_BINDING_TABLE sbt_hit
    g_hits
  END
END

RUN my_rtpipeline RAYGEN sbt_raygen MISS sbt_miss HIT sbt_hit 6 1 1

EXPECT outbuf IDX 0 EQ 20 11 12 23 14 15