90298c24a2
Adds an example python script to the documentation for the 3D_IMAGE shader. The **use-case** is to draw textures with 3D vertex positions, in XR views as well as non-XR views (in a simpler manner). **Testing**: I've tested that this compiles and works on my Macbook (with the example python script included in this change). I don't have access to a Windows or Linux machine right now, but this change doesn't look platform-specific and no new glsl shaders have been added or edited by this change. I'll try to get access to a Windows machine, but if someone does have one, I'd be really grateful if they could try this change. Thanks! **Problem addressed**: The existing 2D_IMAGE shader (exposed in the python API) gets near-clipped when drawn in the XR view, regardless of the near-clip settings. Additionally, the 2D_IMAGE shader only accepts 2D positions for the image vertices, which means drawing textures in 3D requires providing 2D coordinates and then pushing a transform-rotate-scale matrix to the GPU, even for non-XR (i.e. WINDOW) views. The 3D_IMAGE shader is simpler: it accepts 3D vertex positions, and doesn't require any additional work by the scripter. **Workaround**: The current workaround is to use custom shaders in the python script. **Non-intrusive change**: No new glsl shaders were added. This change just bundles two existing shaders: the vertex shader used by the 3D_IMAGE_MODULATE_ALPHA shader, and the fragment shader used by the 2D_IMAGE shader. Reviewed By: #eevee_viewport, jbakker Differential Revision: https://developer.blender.org/D14832
.. Keep this document short & concise, linking to external resources instead of including content in-line. See 'release/text/readme.html' for the end user read-me. Blender ======= Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing. .. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg :scale: 50 % :align: center Project Pages ------------- - `Main Website <http://www.blender.org>`__ - `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__ - `User Community <https://www.blender.org/community/>`__ Development ----------- - `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__ - `Code Review & Bug Tracker <https://developer.blender.org>`__ - `Developer Forum <https://devtalk.blender.org>`__ - `Developer Documentation <https://wiki.blender.org>`__ License ------- Blender as a whole is licensed under the GNU General Public License, Version 3. Individual files may have a different, but compatible license. See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.