diff options
Diffstat (limited to 'progs/demos/arbocclude.c')
| -rw-r--r-- | progs/demos/arbocclude.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/progs/demos/arbocclude.c b/progs/demos/arbocclude.c index 3735f7de4..ddbb1f1b7 100644 --- a/progs/demos/arbocclude.c +++ b/progs/demos/arbocclude.c @@ -115,6 +115,7 @@ static void Display( void ) glScalef(0.3, 0.3, 1.0); glRotatef(-90.0 * Xpos, 0, 0, 1); +#if defined(GL_ARB_occlusion_query) #if TEST_DISPLAY_LISTS glNewList(10, GL_COMPILE); glBeginQueryARB(GL_SAMPLES_PASSED_ARB, OccQuery); @@ -152,6 +153,7 @@ static void Display( void ) /* turn off occlusion testing */ glColorMask(1, 1, 1, 1); glDepthMask(GL_TRUE); +#endif /* GL_ARB_occlusion_query */ /* draw the orange rect, so we can see what's going on */ glColor3f(0.8, 0.5, 0); @@ -173,6 +175,7 @@ static void Display( void ) glLoadIdentity(); glColor3f(1, 1, 1); +#if defined(GL_ARB_occlusion_query) sprintf(s, " %4d Fragments Visible", passed); glRasterPos3f(-0.50, -0.7, 0); PrintString(s); @@ -180,6 +183,10 @@ static void Display( void ) glRasterPos3f(-0.25, -0.8, 0); PrintString("Fully Occluded"); } +#else + glRasterPos3f(-0.25, -0.8, 0); + PrintString("GL_ARB_occlusion_query not available at compile time"); +#endif /* GL_ARB_occlusion_query */ glutSwapBuffers(); } @@ -238,17 +245,21 @@ static void Init( void ) exit(-1); } +#if defined(GL_ARB_occlusion_query) glGetQueryivARB(GL_SAMPLES_PASSED_ARB, GL_QUERY_COUNTER_BITS_ARB, &bits); if (!bits) { printf("Hmmm, GL_QUERY_COUNTER_BITS_ARB is zero!\n"); exit(-1); } +#endif /* GL_ARB_occlusion_query */ glGetIntegerv(GL_DEPTH_BITS, &bits); printf("Depthbits: %d\n", bits); +#if defined(GL_ARB_occlusion_query) glGenQueriesARB(1, &OccQuery); assert(OccQuery > 0); +#endif /* GL_ARB_occlusion_query */ glEnable(GL_DEPTH_TEST); } |