See GPU_matrix.h & gpu_matrix.c for the important changes. Other files are mostly just updated to use the latest API.
- remove unused functions, defines, enums, comments
- remove "3D" from function names
- init to Identity transform (otherwise empty stack)
- gpuMatrixReset lets outside code return to initial state
Part of T49450
Follow up to D2626 and 49fc9cff3b
This was slightly less obvious, especially particle billboard drawing.
That one now requires 1.5 times more space in VBOs and ParticleDrawData
buffers, since we have to draw two triangles per particle, instead of a
single quad... And diagonal of each quad is now drawn in wire mode, not
sure how much we consider this an issue (as in, will this particle draw
code change a lot in future?).
From quick check on the web seems there is no other way to do anyway. :/
Single quads are drawn as a TRIANGLE_FAN, with 4 verts in the same order.
Multiple quads now use PRIM_QUADS_XXX and will need further work. Only 8 places still use this.
Part of T49043
See intern/gawain for the API change. Other files are updated to use the new name. Also updated every call site to the recommended style:
unsigned int foo = VertexFormat_add_attrib(format, "foo", COMP_ ... )
- use 'imm_draw_' prefix for functions that draw.
- use '_3d' suffix for 3d functions, no suffix for 2d functions.
- use terms fill/wire (shorter than filled / lined).
Also add `imm_draw_circle_fill_3d` (only had wire version)
Take advantage of 2D functions, rotation about the X Y or Z axis, uniform scale factors.
We no longer need to call gpuMatrixBegin_legacy() before using the new API locally in functions.
related to T49450
Selection loop would draw the selection ignoring xray.
Now draw in a separate pass after clearing the depth buffer,
as with regular drawing.
Also disable depth sorting,
caller can sort the hit-list by depth if needed.
There are now only referenced in:
* drawobject.c
* particle_edit.c
* space_image.c (a single case to be handled on workspace branch)
* rigidbody_constraint.c (to be handled in the following commit)
