[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [34964] trunk/blender/doc/python_api/ examples/bpy.types.RenderEngine.py: render engine example thanks to dougal2 .
Campbell Barton
ideasman42 at gmail.com
Fri Feb 18 14:40:14 CET 2011
Revision: 34964
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=34964
Author: campbellbarton
Date: 2011-02-18 13:40:13 +0000 (Fri, 18 Feb 2011)
Log Message:
-----------
render engine example thanks to dougal2.
Added Paths:
-----------
trunk/blender/doc/python_api/examples/bpy.types.RenderEngine.py
Added: trunk/blender/doc/python_api/examples/bpy.types.RenderEngine.py
===================================================================
--- trunk/blender/doc/python_api/examples/bpy.types.RenderEngine.py (rev 0)
+++ trunk/blender/doc/python_api/examples/bpy.types.RenderEngine.py 2011-02-18 13:40:13 UTC (rev 34964)
@@ -0,0 +1,70 @@
+"""
+Simple Render Engine
+++++++++++++++++++++
+"""
+
+import bpy
+
+
+class CustomRenderEngine(bpy.types.RenderEngine):
+ # These three members are used by blender to set up the
+ # RenderEngine; define its internal name, visible name and capabilities.
+ bl_idname = 'custom_renderer'
+ bl_label = 'Flat Color Renderer'
+ bl_use_preview = True
+
+ # This is the only method called by blender, in this example
+ # we use it to detect preview rendering and call the implementation
+ # in another method.
+ def render(self, scene):
+ scale = scene.render.resolution_percentage / 100.0
+ self.size_x = int(scene.render.resolution_x * scale)
+ self.size_y = int(scene.render.resolution_y * scale)
+
+ if scene.name == 'preview':
+ self.render_preview(scene)
+ else:
+ self.render_scene(scene)
+
+ # In this example, we fill the preview renders with a flat green color.
+ def render_preview(self, scene):
+ pixel_count = self.size_x * self.size_y
+
+ # The framebuffer is defined as a list of pixels, each pixel
+ # itself being a list of R,G,B,A values
+ green_rect = [[0.0, 1.0, 0.0, 1.0]] * pixel_count
+
+ # Here we write the pixel values to the RenderResult
+ result = self.begin_result(0, 0, self.size_x, self.size_y)
+ layer = result.layers[0]
+ layer.rect = green_rect
+ self.end_result(result)
+
+ # In this example, we fill the full renders with a flat blue color.
+ def render_scene(self, scene):
+ pixel_count = self.size_x * self.size_y
+
+ # The framebuffer is defined as a list of pixels, each pixel
+ # itself being a list of R,G,B,A values
+ blue_rect = [[0.0, 0.0, 1.0, 1.0]] * pixel_count
+
+ # Here we write the pixel values to the RenderResult
+ result = self.begin_result(0, 0, self.size_x, self.size_y)
+ layer = result.layers[0]
+ layer.rect = blue_rect
+ self.end_result(result)
+
+# Register the RenderEngine
+bpy.utils.register_class(CustomRenderEngine)
+
+# RenderEngines also need to tell UI Panels that they are compatible
+# Otherwise most of the UI will be empty when the engine is selected.
+# In this example, we need to see the main render image button and
+# the material preview panel.
+import properties_render
+properties_render.RENDER_PT_render.COMPAT_ENGINES.add('custom_renderer')
+del properties_render
+
+import properties_material
+properties_material.MATERIAL_PT_preview.COMPAT_ENGINES.add('custom_renderer')
+del properties_material
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