Cycles: refactor API for GPU display

* Split GPUDisplay into two classes. PathTraceDisplay to implement the Cycles side,
  and DisplayDriver to implement the host application side. The DisplayDriver is now
  a fully abstract base class, embedded in the PathTraceDisplay.
* Move copy_pixels_to_texture implementation out of the host side into the Cycles side,
  since it can be implemented in terms of the texture buffer mapping.
* Move definition of DeviceGraphicsInteropDestination into display driver header, so
  that we do not need to expose private device headers in the public API.
* Add more detailed comments about how the DisplayDriver should be implemented.

The "driver" terminology might not be obvious, but is also used in other renderers.

Differential Revision: https://developer.blender.org/D12626

1 files changed, 4 insertions, 4 deletions

diff --git a/intern/cycles/integrator/path_trace_work_cpu.h b/intern/cycles/integrator/path_trace_work_cpu.h
index ab729bbf879..d011e8d05bd 100644
--- a/intern/cycles/integrator/path_trace_work_cpu.h
+++ b/intern/cycles/integrator/path_trace_work_cpu.h
@@ -50,10 +50,10 @@ class PathTraceWorkCPU : public PathTraceWork {
                               int start_sample,
                               int samples_num) override;
 
-  virtual void copy_to_gpu_display(GPUDisplay *gpu_display,
-                                   PassMode pass_mode,
-                                   int num_samples) override;
-  virtual void destroy_gpu_resources(GPUDisplay *gpu_display) override;
+  virtual void copy_to_display(PathTraceDisplay *display,
+                               PassMode pass_mode,
+                               int num_samples) override;
+  virtual void destroy_gpu_resources(PathTraceDisplay *display) override;
 
   virtual bool copy_render_buffers_from_device() override;
   virtual bool copy_render_buffers_to_device() override;