Translating an image in fullframe compositor now also translates
the backdrop image for the viewer node.
Attached gif shows the behavior. Notice how gizmo moves with correct
values with the image but the frame stays to indicate what will get
rendered.
Note: This patch is a continuation of [D12750]
(https://archive.blender.org/developer/D12750). In a previous patch,
display offset on screen was not computed correctly. This has now
been fixed.
Pull Request: blender/blender#105677
`get_gpu_textures` was created when the image engine didn't support
texture streaming and used the gpu textures that were stored in the
image buffer itself.
This is only part of the experimental "Full Frame" mode (disabled
by default). See T88150.
Currently the viewer node uses buffer paddings to display image offset
in the backdrop as a temporal solution implemented for {D12466}.
This solution is inefficient memory and performance-wise. Another
issue is that the paddings are part the image when saved.
This patch instead sets the offset in the Viewer node image
as variables and makes the backdrop take it into account
when drawing the image or any related gizmo.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D12750
Use a shorter/simpler license convention, stops the header taking so
much space.
Follow the SPDX license specification: https://spdx.org/licenses
- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile
While most of the source tree has been included
- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
use different header conventions.
doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.
See P2788 for the script that automated these edits.
Reviewed By: brecht, mont29, sergey
Ref D14069
When viewing backdrop on top of the node grid, the grid would be
rendered black when the mode wasn't set to RGBA. This fix fixes this by
reverting the previous fix of drawing the backdrop and implement a
different one that recomputes the UV coordinates on the screen edges.
Since splitting the depth and the color shader in the image engine the
backdrop wasn't visible anymore. The reson is that the min max uv
coordinates were never working for the node editor backdrop that uses
its own coordinate space.
This partial fix will ignore the depth test when drawing the color part
of the backdrop. This will still have artifacts that are visible when
showing other options as RGBA.
Proper fix would be to calculate the the uv vbo in uv space and not in
image space.
Parameter was used to still be compatible with the previous drawing mode.
The previous mode isn't available anymore so the parameter can should be
removed.
Adding better support for drawing huge images in the image/uv editor. Also solved tearing artifacts.
The approach is that for each image/uv editor a screen space gpu texture is created that only contains
the visible pixels. When zooming or panning the gpu texture is rebuild.
Although the solution isn't memory intensive other parts of blender memory usage scales together with
the image size.
* Due to complexity we didn't implement partial updates when drawing images tiled (wrap repeat).
This could be added, but is complicated as a change in the source could mean many different
changes on the GPU texture. The work around for now is to tag all gpu textures to be dirty when
changes are detected.
Original plan was to have 4 screen space images to support panning without gpu texture creation.
For now we don't see the need to implement it as the solution is already fast. Especially when
GPU memory is shared with CPU ram.
Reviewed By: fclem
Maniphest Tasks: T92525, T92903
Differential Revision: https://developer.blender.org/D13424
Image engine is used to draw an image into a space. The current
structure wasn't clear and couldn't be easilly extended. This refactor
spliced the image draw engine into 3 main components.
- Space accessors: contains an interface to communicate with space data
(Image editor, UV Editor, Node Editor) in a common way. This reduced
the branching in the code base.
- DrawingMode: contains an interface to the used tactic to draw an image
inside the space framebuffer. Currently only one mode is implemented;
in the future there could be a separate drawing mode for huge images.
- ImageEngine: the core that connects the draw manager with the space
data and drawing mode.
