Blender Git Loki

UI: Perf: Don't use implicit Attrib.

Implicit attrib is doing memcpy which seems to be slower compared to
individual immAttrib*.

Only fixed the ones who appeared in my profilling logs.

UI: Perf: Group drawcalls inside ui_draw_panel_dragwidget

16 Drawcalls > 1 Drawcall

Do I need to say more?

UI: Perf: Make icon_draw_texture use GWN_draw_primitive.

This bypass the use of immediate mode for theses drawcalls. Placement and
and icon select (via uvs) is done inside the vertex shader.

GPUShader: Cleanup: Remove unused uniform_interface.

DRW: Opti: Make cursor use batch instead of immediate API.

This is also much cleaner and taking 1 drawcall instead of 2.

Cleanup comments

Cleanup shader code

Fix alpha double blend

The color when used alpha factor always got darker. The problem was a double blend that produced a reduction in the color saturation.

Now, there is a premult of the alpha factor before doing last blend pass.

As a result of this change, now the drawing process can be simplified and a pass can be removed. Some cleanup done too.

Still need more work in render mode. Maybe the problem in render is related to Tonemapping.

Thanks Cl�ment Foucault for his help solving this issue.

UI: Fix assert cause by vertex count being too small.

UI: Perf: Optimize widgetbase_draw.

Drawcall per window redraw on default layout:
- 4100+ without patch
- 1270 with patch

Theses drawcalls meant a lot of driver overhead since they each correspond
to one glMapBuffer which is slow.

Fix T54435: Quit prompt fails w/ fractional scale

Merge branch 'master' into blender2.8

Cleanup: global undo (minor changes to internals)

- Get memory usage from MemFile instead of MEM API
avoids possible invalid when threads alloc memory.
- Use size_t instead of uint and uintptr_t to store size.
- Rename UndoElem.str -> filename
- Rename MemFileChunk.ident -> is_identical

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'master' into blender2.8

Cleanup: move paint curve undo into own file

Fix T54420: too much volume render noise with multiple volume objects.

Random numbers for step offset were correlated, now use stratified samples
which reduces noise as well for some types of volumes, mainly procedural
ones where the step size is bigger than the volume features.

Eevee Shaders: Fix "No matching overloaded function"

invert -> inverse

just cleanup and minor bug fixes

GPUFramebuffer: Fix compiler warning about return value.