diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2004-06-28 15:16:28 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2004-06-28 15:16:28 +0000 |
| commit | 625a339a8ac0bef20285877d27eadff97fc2333a (patch) | |
| tree | 6be08ff8650b1c7a30c9ecd7262ad3ede9746565 /progs/tests/texgenmix.c | |
| parent | c2bffec91a5b6ba72514c875b70dbc96ac97431d (diff) | |
make sure Q has a good value before drawing a sample
Diffstat (limited to 'progs/tests/texgenmix.c')
| -rw-r--r-- | progs/tests/texgenmix.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/progs/tests/texgenmix.c b/progs/tests/texgenmix.c index f8942f1d19..be8f6775c7 100644 --- a/progs/tests/texgenmix.c +++ b/progs/tests/texgenmix.c @@ -315,10 +315,6 @@ static void drawSample( int x, int y, int w, int h, glEnd(); break; case 1: - /* why doesn't this case work with software mesa? The S/T tex coords - should turn out as 0 and 1 if dot product of vertex coordinates with - ObjPlaneS3/T3 is calculated, and Q coord should be default value (1.0), no? - Submitting one dummy tex coordinate fixes this? */ glTranslatef( -0.8, -0.8, 0.0 ); glScalef( 1.6, 1.6, 1.0 ); glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); @@ -333,8 +329,11 @@ static void drawSample( int x, int y, int w, int h, glEnable( GL_TEXTURE_GEN_S ); glEnable( GL_TEXTURE_GEN_T ); + /* Issue a texcoord here to be sure Q isn't left over from a + * previous sample. + */ + glTexCoord1f( 0.0 ); glBegin( GL_QUADS ); -/* glTexCoord1f( 0.0 );*/ glVertex2f( 0.0, 0.0 ); glVertex2f( 1.0, 0.0 ); glVertex2f( 1.0, 1.0 ); @@ -407,6 +406,7 @@ static void drawSample( int x, int y, int w, int h, glEnable( GL_TEXTURE_GEN_T ); glEnable( GL_TEXTURE_GEN_R ); + glTexCoord1f( 0.0 ); /* to make sure Q is 1.0 */ glBegin( GL_QUADS ); glVertex3f( 0.0, 0.0, 0.5 ); glVertex3f( 1.0, 0.0, 0.5 ); |