Commit: bf04beb4136e19d8fb1886eb614e877833f529d0
Author: varunsundar08
Date: Tue Apr 7 16:07:36 2015 +0530
Branches: cycles_kernel_split
https://developer.blender.org/rBbf04beb4136e19d8fb1886eb614e877833f529d0
Add utility function to get render-feasible tile size
===================================================================
M intern/cycles/device/device_opencl.cpp
===================================================================
diff --git a/intern/cycles/device/device_opencl.cpp
b/intern/cycles/device/device_opencl.cpp
index b785d7e..d7c0d17 100644
--- a/intern/cycles/device/device_opencl.cpp
+++ b/intern/cycles/device/device_opencl.cpp
@@ -3642,6 +3642,32 @@ One possible tile size is %zux%zu \n", tile_max_x -
local_size[0] , tile_max_y -
}
}
+ /* Considers the scene properties, global memory available in the device
+ * and returns a rectanglular tile dimension that should render on
split kernel
+ */
+ int2 get_render_feasible_tile_size(size_t feasible_global_work_size) {
+ int2 render_feasible_tile_size;
+ int square_root_val = sqrt(feasible_global_work_size);
+ render_feasible_tile_size.x = square_root_val;
+ render_feasible_tile_size.y = square_root_val;
+
+ /* ciel round-off render_feasible_tile_size */
+ int2 ceil_render_feasible_tile_size;
+ ceil_render_feasible_tile_size.x =
(((render_feasible_tile_size.x - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
SPLIT_KERNEL_LOCAL_SIZE_X;
+ ceil_render_feasible_tile_size.y =
(((render_feasible_tile_size.y - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
SPLIT_KERNEL_LOCAL_SIZE_Y;
+
+ if (ceil_render_feasible_tile_size.x *
ceil_render_feasible_tile_size.y <= feasible_global_work_size) {
+ return ceil_render_feasible_tile_size;
+ }
+
+ /* floor round-off render_feasible_tile_size */
+ int2 floor_render_feasible_tile_size;
+ floor_render_feasible_tile_size.x =
(render_feasible_tile_size.x / SPLIT_KERNEL_LOCAL_SIZE_X) *
SPLIT_KERNEL_LOCAL_SIZE_X;
+ floor_render_feasible_tile_size.y =
(render_feasible_tile_size.y / SPLIT_KERNEL_LOCAL_SIZE_Y) *
SPLIT_KERNEL_LOCAL_SIZE_Y;
+
+ return floor_render_feasible_tile_size;
+ }
+
void thread_run(DeviceTask *task)
{
if(task->type == DeviceTask::FILM_CONVERT) {
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