[Bf-blender-cvs] [9c5a120ba23] master: GPencil: Use high precision float buffer for final rendering

[Clément Foucault]

Commit: 9c5a120ba23dd9a1555eec5e45ecfc39ad76c60e
Author: Clément Foucault
Date:   Tue Mar 10 18:17:42 2020 +0100
Branches: master
https://developer.blender.org/rB9c5a120ba23dd9a1555eec5e45ecfc39ad76c60e

GPencil: Use high precision float buffer for final rendering

This avoid color drifting due to R11G11B10 buffers.

===================================================================

M	source/blender/draw/engines/gpencil/gpencil_engine.c

===================================================================

diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.c b/source/blender/draw/engines/gpencil/gpencil_engine.c
index 80afbb5c7a3..d47d6f8a836 100644
--- a/source/blender/draw/engines/gpencil/gpencil_engine.c
+++ b/source/blender/draw/engines/gpencil/gpencil_engine.c
@@ -200,7 +200,8 @@ void GPENCIL_cache_init(void *ved)
   pd->use_layer_fb = false;
   pd->use_object_fb = false;
   pd->use_mask_fb = false;
-  pd->use_signed_fb = false;
+  /* Always use high precision for render. */
+  pd->use_signed_fb = !pd->is_viewport;
 
   if (draw_ctx->v3d) {
     const bool hide_overlay = ((draw_ctx->v3d->flag2 & V3D_HIDE_OVERLAYS) != 0);