Use Fibonacci sequence to increase sample_clamp_indirect

Author: BeheadedKamikaze

Cycles/SFR_Benchmark_cy.py

@@ -1,10 +1,12 @@
 import bpy
-
-from ..Utils.SFR_TestRender import TestRender
+import itertools as it
 
 from bpy.types import Context, Operator
+
 from .. import SFR_Settings
+from ..Utils.SFR_TestRender import TestRender
 from ..install_deps import dependencies
+from ..Utils.fib import fib
 
 
 class SFR_Benchmark_cy(Operator):
@@ -290,17 +292,21 @@ def execute(self, context: Context):
             iteration = 0
             repeat = True
             TestRender(path, iteration, settings)
-            while repeat:
+            for x in it.takewhile(lambda _: repeat, fib()):
+                # save best value found so far before rendering next iteration
+                best_val_found = cycles.sample_clamp_indirect
                 # set settings
-                cycles.sample_clamp_indirect += 1
+                cycles.sample_clamp_indirect += x
+                print(f"Indirect Clamp increment {x} to {cycles.sample_clamp_indirect}")
                 if self.insert_keyframes:
                     keyframe_insert('cycles.sample_clamp_indirect')
                 # set next
                 iteration += 1
                 print("Indirect Clamp Iteration: ", iteration)
                 # start second render
                 repeat = TestRender(path, iteration, settings)
-            cycles.sample_clamp_indirect -= 1
+            print(f"Best value found: {best_val_found}")
+            cycles.sample_clamp_indirect = best_val_found
             if self.insert_keyframes:
                 keyframe_insert('cycles.sample_clamp_indirect')
 

Utils/fib.py

@@ -0,0 +1,10 @@
+import itertools as it
+
+def fib():
+    ''' A modified Fibonacci generator that starts at 1 and increments '''
+    a, b = 1, 1
+    while True:
+        yield a
+        b = a + b
+        yield b
+        a = a + b