fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 09:38:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

double buffer by default. if drawSmooth, use 50% alpha at top of polygon

Browse source
This commit is contained in:
Brian Paul 2001-03-27 17:38:28 +00:00
parent 8afa9e593b
commit 5479e93031
1 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
progs/demos/texenv.c
View file

@ -65,7 +65,7 @@ GLfloat *labelInfoColor = labelColor0;
GLfloat labelLevelColor0[4] = { 0.8, 0.8, 0.1, 1.0 };
GLfloat labelLevelColor1[4] = { 0.0, 0.0, 0.0, 1.0 };
GLboolean doubleBuffered = GL_FALSE;
GLboolean doubleBuffered = GL_TRUE;
GLboolean drawBackground = GL_FALSE;
GLboolean drawBlended = GL_TRUE;
GLboolean drawSmooth = GL_FALSE;
@ -574,6 +574,10 @@ static void drawSample( int x, int y, int w, int h,
glEnable( GL_TEXTURE_2D );
}
/*
* if (drawSmooth) then draw quad which goes from purple at the
* bottom (100% alpha) to green at the top (50% alpha).
*/
glBegin( GL_QUADS );
if ( drawSmooth ) glColor4f( 1.0, 0.0, 1.0, 1.0 );
glTexCoord2f( 0.0, 0.0 );
@ -583,11 +587,11 @@ static void drawSample( int x, int y, int w, int h,
glTexCoord2f( 1.0, 0.0 );
glVertex2f( 0.8, -0.8 );
if ( drawSmooth ) glColor4f( 0.0, 1.0, 0.0, 1.0 );
if ( drawSmooth ) glColor4f( 0.0, 1.0, 0.0, 0.5 );
glTexCoord2f( 1.0, 1.0 );
glVertex2f( 0.8, 0.8 );
if ( drawSmooth ) glColor4f( 0.0, 1.0, 0.0, 1.0 );
if ( drawSmooth ) glColor4f( 0.0, 1.0, 0.0, 0.5 );
glTexCoord2f( 0.0, 1.0 );
glVertex2f( -0.8, 0.8 );
glEnd();