[ray_tracing] replaced single bounce gi with restir path tracing, which is just a work in progress for now

Author: PanosK92

data/shaders/common_resources.hlsl

@@ -235,7 +235,7 @@ bool is_taa_enabled()                    { return any(buffer_frame.taa_jitter_cu
 bool is_ray_traced_reflections_enabled() { return buffer_frame.options & uint(1U << 0); }
 bool is_ssao_enabled()                   { return buffer_frame.options & uint(1U << 1); }
 bool is_ray_traced_shadows_enabled()     { return buffer_frame.options & uint(1U << 2); }
-bool is_ray_traced_gi_enabled()          { return buffer_frame.options & uint(1U << 3); }
+bool is_restir_pt_enabled()              { return buffer_frame.options & uint(1U << 3); }
 matrix pass_get_transform_previous() { return buffer_pass.values; }
 float2 pass_get_f2_value()           { return float2(buffer_pass.values._m23, buffer_pass.values._m30); }
 float3 pass_get_f3_value()           { return float3(buffer_pass.values._m00, buffer_pass.values._m01, buffer_pass.values._m02); }

data/shaders/light_composition.hlsl

@@ -58,7 +58,7 @@ void main_cs(uint3 thread_id : SV_DispatchThreadID)
         distance_from_camera = surface.camera_to_pixel_length;
 
         // add ray traced global illumination (indirect diffuse)
-        if (is_ray_traced_gi_enabled())
+        if (is_restir_pt_enabled())
         {
             float3 gi = tex6.SampleLevel(samplers[sampler_point_clamp], surface.uv, 0).rgb;
             light_diffuse += gi * surface.albedo;