Commit: a7cae2987d078da8a3cb9a293fbcdf3b6ab43ddb
Author: Antony Riakiotakis
Date: Thu Apr 16 18:34:53 2015 +0200
Branches: master
https://developer.blender.org/rBa7cae2987d078da8a3cb9a293fbcdf3b6ab43ddb
OpenGL does not like line thickness less than 1.0.
Check here is not completely correct either, we should check against
GL_ALIASED_LINE_WIDTH_RANGE and GL_SMOOTH_LINE_WIDTH_RANGE
===================================================================
M source/blender/editors/gpencil/drawgpencil.c
===================================================================
diff --git a/source/blender/editors/gpencil/drawgpencil.c
b/source/blender/editors/gpencil/drawgpencil.c
index d4d601b..0892692 100644
--- a/source/blender/editors/gpencil/drawgpencil.c
+++ b/source/blender/editors/gpencil/drawgpencil.c
@@ -121,7 +121,7 @@ static void gp_draw_stroke_buffer(tGPspoint *points, int
totpoints, short thickn
/* draw stroke curve */
if (G.debug & G_DEBUG) setlinestyle(2);
- glLineWidth(oldpressure * thickness);
+ glLineWidth(max_ff(oldpressure * thickness, 1.0));
glBegin(GL_LINE_STRIP);
for (i = 0, pt = points; i < totpoints && pt; i++, pt++) {
@@ -130,7 +130,7 @@ static void gp_draw_stroke_buffer(tGPspoint *points, int
totpoints, short thickn
*/
if (fabsf(pt->pressure - oldpressure) > 0.2f) {
glEnd();
- glLineWidth(pt->pressure * thickness);
+ glLineWidth(max_ff(pt->pressure * thickness,
1.0f));
glBegin(GL_LINE_STRIP);
/* need to roll-back one point to ensure that
there are no gaps in the stroke */
@@ -415,7 +415,7 @@ static void gp_draw_stroke_3d(bGPDspoint *points, int
totpoints, short thickness
int i;
/* draw stroke curve */
- glLineWidth(curpressure * thickness);
+ glLineWidth(max_ff(curpressure * thickness, 1.0f));
glBegin(GL_LINE_STRIP);
for (i = 0, pt = points; i < totpoints && pt; i++, pt++) {
/* if there was a significant pressure change, stop the curve,
change the thickness of the stroke,
@@ -425,7 +425,7 @@ static void gp_draw_stroke_3d(bGPDspoint *points, int
totpoints, short thickness
if (fabsf(pt->pressure - curpressure) > 0.2f /
(float)thickness) {
glEnd();
curpressure = pt->pressure;
- glLineWidth(curpressure * thickness);
+ glLineWidth(max_ff(curpressure * thickness, 1.0f));
glBegin(GL_LINE_STRIP);
/* need to roll-back one point to ensure that there are
no gaps in the stroke */
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