testing: Cut render-* test resolution in half to speed up testing

The time it takes to run a full testsuite was slowly creeping up to an
inconvenient time on CI. The most expensive test are the `render-*`
tests. Cut all of their resolutions in half to speed up CI runs.

Signed-off-by: Larry Gritz <lg@larrygritz.com>

Author: lgritz

testsuite/render-background/ref/out-macos-alt.exr

@@ -11,4 +11,4 @@
 idiff_program = "idiff"
 
 outputs = [ "out.exr" ]
-command = testrender("-r 320 240 -aa 4 --options statistics:level=1 scene.xml out.exr")
+command = testrender("-r 160 120 -aa 4 --options statistics:level=1 scene.xml out.exr")

testsuite/render-background/run.py

@@ -9,6 +9,6 @@
 hardfail = 0.035
 
 outputs = [ "out.exr" ]
-command = testrender("-r 256 256 -aa 4 --llvm_opt 13 bumptest.xml out.exr")
+command = testrender("-r 128 128 -aa 4 --llvm_opt 13 bumptest.xml out.exr")
 
 # Note: we pick this test arbitrarily as the one to verify llvm_opt=13 works

testsuite/render-bumptest/ref/out.exr

@@ -7,4 +7,4 @@
 failthresh = 0.01
 failpercent = 1
 outputs = [ "out.exr" ]
-command = testrender("-r 256 256 -aa 8 bunny.xml out.exr")
+command = testrender("-r 128 128 -aa 8 bunny.xml out.exr")

testsuite/render-bumptest/run.py

@@ -7,6 +7,6 @@
 failthresh = 0.01
 failpercent = 1
 outputs = [ "out.exr" ]
-command = testrender("-r 256 256 -aa 4 --llvm_opt 12 cornell.xml out.exr")
+command = testrender("-r 128 128 -aa 4 --llvm_opt 12 cornell.xml out.exr")
 
 # Note: we pick this test arbitrarily as the one to verify llvm_opt=12 works

testsuite/render-bunny/ref/out-macos-alt.exr

@@ -7,4 +7,4 @@
 failthresh = 0.01
 failpercent = 1
 outputs = [ "out.exr" ]
-command = testrender("-r 256 256 -aa 8 scene.xml out.exr")
+command = testrender("-r 128 128 -aa 8 scene.xml out.exr")