Cycles: reorganize Performance panel layout, move viewport BVH type to debug.

intern/cycles/blender/addon/ui.py

@@ -396,6 +396,8 @@ class CyclesRender_PT_performance(CyclesButtonsPanel, Panel):
         sub.enabled = rd.threads_mode == 'FIXED'
         sub.prop(rd, "threads")
 
+        col.separator()
+
         sub = col.column(align=True)
         sub.label(text="Tiles:")
         sub.prop(cscene, "tile_order", text="")
@@ -405,20 +407,10 @@ class CyclesRender_PT_performance(CyclesButtonsPanel, Panel):
 
         sub.prop(cscene, "use_progressive_refine")
 
-        subsub = sub.column(align=True)
-        subsub.prop(rd, "use_save_buffers")
-
-        col = split.column(align=True)
-
-        col.label(text="Viewport:")
-        col.prop(cscene, "debug_bvh_type", text="")
-        col.separator()
-        col.prop(cscene, "preview_start_resolution")
-        col.prop(rd, "preview_pixel_size", text="")
-
-        col.separator()
+        col = split.column()
 
         col.label(text="Final Render:")
+        col.prop(rd, "use_save_buffers")
         col.prop(rd, "use_persistent_data", text="Persistent Images")
 
         col.separator()
@@ -431,6 +423,12 @@ class CyclesRender_PT_performance(CyclesButtonsPanel, Panel):
         row.active = not cscene.debug_use_spatial_splits
         row.prop(cscene, "debug_bvh_time_steps")
 
+        col = layout.column()
+        col.label(text="Viewport Resolution:")
+        split = col.split()
+        split.prop(rd, "preview_pixel_size", text="")
+        split.prop(cscene, "preview_start_resolution")
+
 
 class CyclesRender_PT_layer_options(CyclesButtonsPanel, Panel):
     bl_label = "Layer"
@@ -1595,11 +1593,15 @@ class CyclesRender_PT_debug(CyclesButtonsPanel, Panel):
         col.prop(cscene, "debug_use_qbvh")
         col.prop(cscene, "debug_use_cpu_split_kernel")
 
+        col.separator()
+
         col = layout.column()
         col.label('CUDA Flags:')
         col.prop(cscene, "debug_use_cuda_adaptive_compile")
         col.prop(cscene, "debug_use_cuda_split_kernel")
 
+        col.separator()
+
         col = layout.column()
         col.label('OpenCL Flags:')
         col.prop(cscene, "debug_opencl_kernel_type", text="Kernel")
@@ -1608,6 +1610,11 @@ class CyclesRender_PT_debug(CyclesButtonsPanel, Panel):
         col.prop(cscene, "debug_use_opencl_debug", text="Debug")
         col.prop(cscene, "debug_opencl_mem_limit")
 
+        col.separator()
+
+        col = layout.column()
+        col.prop(cscene, "debug_bvh_type")
+
 
 class CyclesParticle_PT_CurveSettings(CyclesButtonsPanel, Panel):
     bl_label = "Cycles Hair Settings"

intern/cycles/blender/blender_python.cpp

@@ -60,6 +60,8 @@ bool debug_flags_sync_from_scene(BL::Scene b_scene)
 	/* Backup some settings for comparison. */
 	DebugFlags::OpenCL::DeviceType opencl_device_type = flags.opencl.device_type;
 	DebugFlags::OpenCL::KernelType opencl_kernel_type = flags.opencl.kernel_type;
+	/* Synchronize shared flags. */
+	flags.viewport_static_bvh = get_enum(cscene, "debug_bvh_type");
 	/* Synchronize CPU flags. */
 	flags.cpu.avx2 = get_boolean(cscene, "debug_use_cpu_avx2");
 	flags.cpu.avx = get_boolean(cscene, "debug_use_cpu_avx");

intern/cycles/blender/blender_sync.cpp

@@ -626,14 +626,10 @@ SceneParams BlenderSync::get_scene_params(BL::Scene& b_scene,
 	else if(shadingsystem == 1)
 		params.shadingsystem = SHADINGSYSTEM_OSL;
 	
-	if(background)
+	if(background || DebugFlags().viewport_static_bvh)
 		params.bvh_type = SceneParams::BVH_STATIC;
 	else
-		params.bvh_type = (SceneParams::BVHType)get_enum(
-		        cscene,
-		        "debug_bvh_type",
-		        SceneParams::BVH_NUM_TYPES,
-		        SceneParams::BVH_STATIC);
+		params.bvh_type = SceneParams::BVH_DYNAMIC;
 
 	params.use_bvh_spatial_split = RNA_boolean_get(&cscene, "debug_use_spatial_splits");
 	params.use_bvh_unaligned_nodes = RNA_boolean_get(&cscene, "debug_use_hair_bvh");

intern/cycles/util/util_debug.cpp

@@ -122,13 +122,16 @@ void DebugFlags::OpenCL::reset()
 }
 
 DebugFlags::DebugFlags()
+: viewport_static_bvh(false)
 {
 	/* Nothing for now. */
 }
 
 void DebugFlags::reset()
 {
+	viewport_static_bvh = false;
 	cpu.reset();
+	cuda.reset();
 	opencl.reset();
 }
 

intern/cycles/util/util_debug.h

@@ -30,6 +30,9 @@ CCL_NAMESPACE_BEGIN
  */
 class DebugFlags {
 public:
+	/* Use static BVH in viewport, to match final render exactly. */
+	bool viewport_static_bvh;
+
 	/* Descriptor of CPU feature-set to be used. */
 	struct CPU {
 		CPU();