Blender Git Commits

Fix T53971: single layer render showing the wrong render layer in image editor.

Original patch Cheryl Chen, extra fixes by Brecht.

Differential Revision: https://developer.blender.org/D3098

Code refactor: move OIIO image buffer writing outside session, into callback.

Original patch by Guillaume, modifications by Brecht.

Differential Revision: https://developer.blender.org/D3102

GHOST: Support Unity taskbar progress API

Unity itself is deprecated, but the API is also supported by KDE and the GNOME Dock extension,
which means that it will be useful for a wide variety of distributions.

To get a progress bar, the system must have a blender.desktop file and libunity installed.

The need for libunity is annoying, but the only alternative would be to integrate a DBus library...

Reviewers: campbellbarton, brecht

Differential Revision: https://developer.blender.org/D3106

UV/Image Editor: Optimize UV Drawing

Use batchs to store the entire buffer of loops before drawing.
These batchs can be stored in the mesh draw cache later.

Depsgraph: Fix missing shader updates with copy on write

Basically, don't do full in-place copy of node tree datablock if it's
already expanded. Current way how node tree is evaluated is fully
built around the idea that evaluation copies values from original
to copied datablocks.

Changing links is handled on another level.

Mesh: Batch cache: Fix sculpt update issue.

Old solution was to create a new vbo and copy it to the location of
the old vbo hoping for the batches to update their vaos before drawing.

The issue is that the new VAO caching is not updating the VAOs at all
unless the shader interface changes.

So unless we expand gawain to support updating of vertex buffers (in a
better way than the current "dynamic" buffer) we need to delete every batch
linked to the vbo we want to recreate.

This solution might have performance implications.

GWN: Fix compilation error without VRAM_USAGE flag.

Merge branch 'master' into blender2.8

BLI_assert: extract from BLI_utildefines

BLI_utildefines is quite large, defining many unrelated things.
Add BLI_assert to include in inline headers, so math defines don't
pull in too much.

Minor cleanup & commenting.

GHOST: Fix wrong usage of wglCreatePbufferARB.

Last argument must be a pointer to list of int terminated by a value of 0.

Missed last commit

BLI_math: don't use asserts in inline API

Requires BLI_utildefines.h to be included first,
(already noted in other inline code).

Possible alternative could be to move BLI_assert into own header.

GWN: Batch: Perf: Comment out glBindVertexArray(0)

Even if they are for safety they are not free to use !

On my system (Mesa + AMD Vega GPU) calling:
glBindVertexArray(1);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
in a loop, shows the same overhead as a full vao switching (which is more
or less 10 times slower than just calling glDrawArrays)

Moreover, now that we use OpenGL 3.3 binding a VAO is REQUIRED to issue a
drawcall so it is garanted to be overwritten before the next drawcall.
Problem can only happen if someone draws directly with opengl commands.

GWN: Batch: Only revert to default Vao when needed.

Drawing ranges via glDrawArrays is already supported and should not need
a manual offset in the VAO like glDrawArraysInstanced or glDrawElements.

GWN: Add primitive restart in element/index buffers.

This allows to draw multiple primitive of the type
GWN_PRIM_LINE_STRIP
GWN_PRIM_LINE_LOOP
GWN_PRIM_TRI_STRIP
GWN_PRIM_TRI_FAN
GWN_PRIM_LINE_STRIP_ADJ
with only one drawcall. This should speed up some areas that are really
sensitive to drawcall counts : UV drawing, Hair drawing...

Fix T54322: partial redraw not working after recent refactor.

Merge branch 'master' into blender2.8

Style cleanup.

Fix (unreported) broken IDarray case in IDP_EqualsProperties_ex.

For IDProps IDarray, IDP_EqualsProperties was called for each item,
instead of IDP_EqualsProperties_ex, discarding value of `is_strict`
option.

Probably not an issue with current code, though.