From 14150bc8567cf424fc3a635a33f05213505681be Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Fri, 14 Mar 2008 11:35:57 -0600 Subject: [PATCH] mesa: call glColorMask(1,1,1,1) before glClear() Without this, second and subsequent redraws rendered incorrectly. Plus comments. --- progs/trivial/tri-mask-tri.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/progs/trivial/tri-mask-tri.c b/progs/trivial/tri-mask-tri.c index 96a1ea7168a..38ecd20a739 100644 --- a/progs/trivial/tri-mask-tri.c +++ b/progs/trivial/tri-mask-tri.c @@ -70,8 +70,11 @@ static void Key(unsigned char key, int x, int y) static void Draw(void) { + glColorMask(1,1,1,1); + glClear(GL_COLOR_BUFFER_BIT); + /* right triangle: green */ glBegin(GL_TRIANGLES); glColor3f(0,1,0); glVertex3f( 0.9, -0.9, -30.0); @@ -81,6 +84,7 @@ static void Draw(void) glColorMask(1,0,1,0); + /* left triangle: white&mask: purple middle region: white */ glBegin(GL_TRIANGLES); glColor3f(1,1,1); glVertex3f(-0.9, -0.9, -30.0); -- 2.30.2