milasudril
commented
3 years ago Subtasks:
- [x] Make output node arbitrary
- [x] Save current output node to file
- [x] Create a new previewer, featuring a GtkGlArea
- [x] Shaders
- [x] Vertex buffers
- One buffer for grid (x, y). Only updated when canvas size changes
- One buffer for elevation z
- One buffer for normal vectors (if normals cannot be computed on GPU)
- [x] Some form of camera and light control
- [x] Fallback: Notify user when OpenGL cannot be initialilzed
- [x] Write code to generate a triangulated grid (dimensions should be the same as canvas size)
- [x] Make it possible to export topographic map
- [x] ~Make it possible to import topographic map~ Sikp this function. Will be strange if imported into document with different canvas size
- [x] Verify that gradient computation is correct (with and without supersampling)
- [x] Render topographic map to image fills with zeros. Fix this.
- [x] Filter nodes which cannot currently be exported form output node selector
- [x] Fix render-to-image
- [x] Fix so that palettes and images are selected
- [x] ~If possible: Optimize terrain view for GPU memory footprint~ Save for later.
- [x] Update documentation
Summary
It would be nice to have a 3d viewport if a texture is going to be used as a heightmap
Motivation
It is hard to visualize what would happen if you mapped intensity to height.
Proposed solution
An OpenGL viewport, that can show a 3d view of the texture.