RPRBLND-2301: Fix addon enabling in Blender 4.0+ (#660)

* RPRBLND-2301: Fix addon enabling in Blender 4.0+
Made RPR node visible in Add menu.

* Fixed sockets issue.

* Adjusted ShaderNodeBsdfPrincipled.

* Code improvements.

* Migration from bgl to gpu module.

* Remover redundant bgl code.
Fixed hardcoded channels.

* Fixed render pass dimension issue.

* Fixed Transmission input issue.

* Fixed Preview render.

* Performance drop fix.

* Refactored gl.py to gpu.py and removed redundant bgl code.

* Removed entire gpu.py. Moved set_image method to ViewportEngine.

* Improved node category registration.
Added register_rpr_node_categories, unregister_rpr_node_categories with condition for blender version >=4.0

* Code improvements

src/bindings/pyrpr/src/pyrpr.py

@@ -22,8 +22,6 @@
 import numpy as np
 from typing import List
 
-import bgl
-
 import pyrprwrap
 from pyrprwrap import *
 
@@ -966,36 +964,6 @@ def get_cl_mem(self):
         return cl_mem[0]
 
 
-class FrameBufferGL(FrameBuffer):
-    def __init__(self, context, width, height):
-        super().__init__(context, width, height)
-
-    def _create(self):
-        textures = bgl.Buffer(bgl.GL_INT, [1,])
-        bgl.glGenTextures(1, textures)
-        self.texture_id = textures[0]
-
-        bgl.glBindTexture(bgl.GL_TEXTURE_2D, self.texture_id)
-        bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_MIN_FILTER, bgl.GL_LINEAR)
-        bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_MAG_FILTER, bgl.GL_LINEAR)
-        bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_WRAP_S, bgl.GL_REPEAT)
-        bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_WRAP_T, bgl.GL_REPEAT)
-
-        bgl.glTexImage2D(
-            bgl.GL_TEXTURE_2D, 0, bgl.GL_RGBA if platform.system() == 'Darwin' else bgl.GL_RGBA16F,
-            self.width, self.height, 0,
-            bgl.GL_RGBA, bgl.GL_FLOAT,
-            bgl.Buffer(bgl.GL_FLOAT, [self.width, self.height, self.channels])
-        )
-
-        ContextCreateFramebufferFromGLTexture2D(self.context, bgl.GL_TEXTURE_2D, 0, self.texture_id, self)
-
-    def delete(self):
-        super().delete()
-        textures = bgl.Buffer(bgl.GL_INT, [1,], [self.texture_id, ])
-        bgl.glDeleteTextures(1, textures)
-
-
 class Composite(Object):
     core_type_name = 'rpr_composite'
 

src/bindings/pyrpr/src/pyrprimagefilters.py

@@ -23,8 +23,6 @@
 
 import pyrpr
 
-import bgl
-
 
 class _init_data:
     log_fun = None
@@ -146,9 +144,6 @@ def create_image(self, width, height, components=4):
     def create_frame_buffer_image(self, frame_buffer):
         return FrameBufferImage(self, frame_buffer)
 
-    def create_frame_buffer_image_gl(self, frame_buffer):
-        return FrameBufferImageGL(self, frame_buffer)
-
     def create_command_queue(self):
         return CommandQueue(self)
 
@@ -257,15 +252,6 @@ def update(self):
         pass
 
 
-class FrameBufferImageGL(FrameBufferImage):
-    def _create(self):
-        ContextCreateImageFromOpenGlTexture(self.context, bgl.GL_TEXTURE_2D, 0, self.frame_buffer.gl_texture, self)
-
-    def update(self):
-        # image is updated directly
-        pass
-
-
 class FrameBufferImageMetal(FrameBufferImage):
     def _create(self):
         ContextCreateImageFromMetalMemory(self.context, self._get_desc(), 

src/rprblender/__init__.py

@@ -23,7 +23,7 @@
     "version": (3, 6, 9),
     "blender": (2, 93, 0),
     "location": "Info header, render engine menu",
-    "description": "Radeon ProRender rendering plugin for Blender 2.9x",
+    "description": "Radeon ProRender rendering plugin for Blender 2.9x+",
     "warning": "",
     "tracker_url": "",
     "wiki_url": "",

src/rprblender/engine/context.py

@@ -53,7 +53,6 @@ def __init__(self):
         self.material_system = None
         self.width = None
         self.height = None
-        self.gl_interop = None
         self.engine_type = None
 
         # Here we'll store some useful blender data, which could be required to do some export
@@ -97,7 +96,6 @@ def __init__(self):
     def init(self, context_flags, context_props):
         self.context = self._Context(context_flags, context_props)
         self.material_system = pyrpr.MaterialSystem(self.context)
-        self.gl_interop = pyrpr.CREATION_FLAGS_ENABLE_GL_INTEROP in context_flags
 
         # context settings
         self.set_parameter(pyrpr.CONTEXT_X_FLIP, False)
@@ -159,9 +157,6 @@ def get_frame_buffer(self, aov_type=None):
         if aov_type is not None:
             return self.frame_buffers_aovs[aov_type]['res']
 
-        if self.gl_interop:
-            return self.frame_buffers_aovs[pyrpr.AOV_COLOR]['gl']
-
         if self.composite:
             return self.frame_buffers_aovs[pyrpr.AOV_COLOR]['composite']
 
@@ -186,13 +181,8 @@ def enable_aov(self, aov_type):
         fbs['aov'] = pyrpr.FrameBuffer(self.context, self.width, self.height)
         fbs['aov'].set_name("%d_aov" % aov_type)
         self.context.attach_aov(aov_type, fbs['aov'])
-        if aov_type == pyrpr.AOV_COLOR and self.gl_interop:
-            fbs['res'] = pyrpr.FrameBufferGL(self.context, self.width, self.height)
-            fbs['gl'] = fbs['res']      # resolved and gl framebuffers are the same
-            fbs['gl'].set_name("%d_gl" % aov_type)
-        else:
-            fbs['res'] = pyrpr.FrameBuffer(self.context, self.width, self.height)
-            fbs['res'].set_name("%d_res" % aov_type)
+        fbs['res'] = pyrpr.FrameBuffer(self.context, self.width, self.height)
+        fbs['res'].set_name("%d_res" % aov_type)
 
         self.frame_buffers_aovs[aov_type] = fbs
 
@@ -300,11 +290,6 @@ def create_filter_composite(self):
         self.frame_buffers_aovs[pyrpr.AOV_COLOR]['composite'] = pyrpr.FrameBuffer(
             self.context, self.width, self.height)
         self.frame_buffers_aovs[pyrpr.AOV_COLOR]['composite'].set_name('default_composite')
-        if self.gl_interop:
-            # splitting resolved and gl framebuffers
-            self.frame_buffers_aovs[pyrpr.AOV_COLOR]['res'] = pyrpr.FrameBuffer(
-                self.context, self.width, self.height)
-            self.frame_buffers_aovs[pyrpr.AOV_COLOR]['res'].set_name('default_res')
         # Composite calculation elements frame buffers
         color = self.create_composite(pyrpr.COMPOSITE_FRAMEBUFFER, {
             'framebuffer.input': self.frame_buffers_aovs[pyrpr.AOV_COLOR]['res']
@@ -347,9 +332,6 @@ def create_filter_composite(self):
 
     def _disable_catchers(self):
         self.composite = None
-        if self.gl_interop:
-            # set resolved framebuffer be the same as gl
-            self.frame_buffers_aovs[pyrpr.AOV_COLOR]['res'] = self.frame_buffers_aovs[pyrpr.AOV_COLOR]['gl']
         del self.frame_buffers_aovs[pyrpr.AOV_COLOR]['composite']
 
     def sync_auto_adapt_subdivision(self, width=0, height=0):
@@ -613,8 +595,6 @@ def apply_filters(self):
         if self.composite:
             color_aov = self.frame_buffers_aovs[pyrpr.AOV_COLOR]
             self.composite.compute(color_aov['composite'])
-            if self.gl_interop:
-                color_aov['composite'].resolve(color_aov['gl'])
 
 
 class RPRContext2(RPRContext):

src/rprblender/engine/image_filter.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 #********************************************************************
 from abc import ABCMeta, abstractmethod
-import os
 
 import pyrpr
 import pyhybrid
@@ -65,10 +64,7 @@ def __init__(self, rpr_context: pyrpr.Context, inputs, sigmas, params, width, he
                     self.inputs[input_id] = self.context.create_image(self.width, self.height)
 
         self.command_queue = self.context.create_command_queue()
-        if frame_buffer_gl:
-            self.output_image = self.context.create_frame_buffer_image_gl(frame_buffer_gl)
-        else:
-            self.output_image = self.context.create_image(self.width, self.height)
+        self.output_image = self.context.create_image(self.width, self.height)
 
         self._create_filter()
 

src/rprblender/engine/preview_engine.py

@@ -86,9 +86,13 @@ def render(self):
                     # since version 3.4 result.layers[0].passes == ['Combined', 'Depth']
                     # we need to add Depth AOV to keep correct array size while using foreach_set
                     image = np.concatenate(
-                        (image, self.rpr_context.get_image(pyrpr.AOV_DEPTH).flatten())
+                        (image, self.rpr_context.get_image(pyrpr.AOV_DEPTH)[:, :, 0:1].flatten())
                     )
 
+                if BLENDER_VERSION >= '4.0':
+                    # foreach_set requires every pass to be 4 channels, so we resize to reach desirable size
+                    image.resize((len(result.layers[0].passes) * self.rpr_context.width * self.rpr_context.height * 4,))
+
                 result.layers[0].passes.foreach_set('rect', image)
                 self.rpr_engine.update_result(result)
 

src/rprblender/engine/render_engine.py

@@ -25,7 +25,7 @@
 from rprblender import utils
 from .engine import Engine
 from rprblender.export import world, camera, object, instance, particle
-from rprblender.utils import render_stamp
+from rprblender.utils import render_stamp, BLENDER_VERSION
 from rprblender.utils.conversion import perfcounter_to_str, get_cryptomatte_hash
 from rprblender.utils.user_settings import get_user_settings
 from rprblender import bl_info
@@ -152,8 +152,13 @@ def set_render_result(render_passes: bpy.types.RenderPasses):
 
                 images.append(image.flatten())
 
+            images_data = np.concatenate(images)
+            if BLENDER_VERSION >= '4.0':
+                # foreach_set requires every pass to be 4 channels, so we resize to reach desirable size
+                images_data.resize((len(render_passes) * self.width * self.height * 4,))
+
             # efficient way to copy all AOV images
-            render_passes.foreach_set('rect', np.concatenate(images))
+            render_passes.foreach_set('rect', images_data)
 
         result = self.rpr_engine.begin_result(*tile_pos, *tile_size, layer=layer_name, view="")
         try:
@@ -203,8 +208,13 @@ def set_render_result(render_passes: bpy.types.RenderPasses):
 
                 images.append(image.flatten())
 
+            images_data = np.concatenate(images)
+            if BLENDER_VERSION >= '4.0':
+                # foreach_set requires every pass to be 4 channels, so we resize to reach desirable size
+                images_data.resize((len(render_passes) * self.width * self.height * 4,))
+
             # efficient way to copy all AOV images
-            render_passes.foreach_set('rect', np.concatenate(images))
+            render_passes.foreach_set('rect', images_data)
 
         result = self.rpr_engine.begin_result(*tile_pos, *tile_size, layer=layer_name, view="")
         try: