diff options
| author | Michal Krol <michal@vmware.com> | 2009-09-14 11:22:05 +0200 |
|---|---|---|
| committer | Michal Krol <michal@vmware.com> | 2009-09-14 11:22:05 +0200 |
| commit | 9f273f109875cd9208d4c1c8f5939fb5e507c230 (patch) | |
| tree | 35c8adedcf44cf8eb3bddbb51b5efa766539a07b /progs/demos/copypix.c | |
| parent | fab99092a0879531442d1dd20f971ae7eda824eb (diff) | |
| parent | aad0deee4b2d347bdfc536fe98938ed825bf0f6b (diff) | |
Merge commit 'origin/master' into glsl-pp-rework-2
Diffstat (limited to 'progs/demos/copypix.c')
| -rw-r--r-- | progs/demos/copypix.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/progs/demos/copypix.c b/progs/demos/copypix.c index 51435acfa0..a13339ea62 100644 --- a/progs/demos/copypix.c +++ b/progs/demos/copypix.c @@ -26,6 +26,7 @@ static int Scissor = 0; static float Xzoom, Yzoom; static GLboolean DrawFront = GL_FALSE; static GLboolean Dither = GL_TRUE; +static GLboolean Invert = GL_FALSE; static void Reset( void ) @@ -59,6 +60,15 @@ static void Display( void ) if (Scissor) glEnable(GL_SCISSOR_TEST); + if (Invert) { + glPixelTransferf(GL_RED_SCALE, -1.0); + glPixelTransferf(GL_GREEN_SCALE, -1.0); + glPixelTransferf(GL_BLUE_SCALE, -1.0); + glPixelTransferf(GL_RED_BIAS, 1.0); + glPixelTransferf(GL_GREEN_BIAS, 1.0); + glPixelTransferf(GL_BLUE_BIAS, 1.0); + } + /* draw copy */ glPixelZoom(Xzoom, Yzoom); glWindowPos2iARB(Xpos, Ypos); @@ -67,6 +77,15 @@ static void Display( void ) glDisable(GL_SCISSOR_TEST); + if (Invert) { + glPixelTransferf(GL_RED_SCALE, 1.0); + glPixelTransferf(GL_GREEN_SCALE, 1.0); + glPixelTransferf(GL_BLUE_SCALE, 1.0); + glPixelTransferf(GL_RED_BIAS, 0.0); + glPixelTransferf(GL_GREEN_BIAS, 0.0); + glPixelTransferf(GL_BLUE_BIAS, 0.0); + } + if (DrawFront) glFinish(); else @@ -105,6 +124,9 @@ static void Key( unsigned char key, int x, int y ) else glDisable(GL_DITHER); break; + case 'i': + Invert = !Invert; + break; case 's': Scissor = !Scissor; break; |