diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-12-14 17:34:01 -0700 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-12-18 16:24:19 -0700 |
| commit | 85f5e6d7b903fee332a372f8fe1577f79c594276 (patch) | |
| tree | f4a400d151166503f118a2103a0e538a6b2c9480 /progs | |
| parent | 9efa1029e5a2ee90e3265d9959730685ce841b66 (diff) | |
Fix a quadstrip front/back-face inconsistancy.
Only set front material colors to make it noticable if front/back-face
determination is incorrect anywhere.
Diffstat (limited to 'progs')
| -rw-r--r-- | progs/demos/engine.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/progs/demos/engine.c b/progs/demos/engine.c index 143b02a889..393cd95988 100644 --- a/progs/demos/engine.c +++ b/progs/demos/engine.c @@ -441,8 +441,8 @@ DrawConnector(float length, float thickness, for (i = 0; i <= 36; i++) { const int j = i % 36; glNormal3f(normals[j][0], normals[j][1], 0); - glVertex3f(points[j][0], points[j][1], z0); glVertex3f(points[j][0], points[j][1], z1); + glVertex3f(points[j][0], points[j][1], z0); } glEnd(); } @@ -741,7 +741,7 @@ DrawEngine(const Engine *eng, float crankAngle) glTranslatef(0, 0, -0.5 * crankLen); /* crankshaft */ - glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, CrankshaftColor); + glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, CrankshaftColor); glColor4fv(CrankshaftColor); DrawPositionedCrankshaft(eng, crankAngle); @@ -760,12 +760,12 @@ DrawEngine(const Engine *eng, float crankAngle) rot += k * eng->V_Angle; /* piston */ - glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, PistonColor); + glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, PistonColor); glColor4fv(PistonColor); DrawPositionedPiston(eng, rot); /* connecting rod */ - glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, ConnRodColor); + glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, ConnRodColor); glColor4fv(ConnRodColor); DrawPositionedConnectingRod(eng, rot); glPopMatrix(); @@ -780,7 +780,7 @@ DrawEngine(const Engine *eng, float crankAngle) } glEnable(GL_CULL_FACE); - glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, BlockColor); + glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, BlockColor); glColor4fv(BlockColor); if (eng->CrankList) glCallList(eng->BlockList); @@ -1250,6 +1250,7 @@ Init(void) { const GLfloat lightColor[4] = { 0.7, 0.7, 0.7, 1.0 }; const GLfloat specular[4] = { 0.8, 0.8, 0.8, 1.0 }; + const GLfloat backColor[4] = { 1, 1, 0, 0 }; Q = gluNewQuadric(); gluQuadricNormals(Q, GLU_SMOOTH); @@ -1261,10 +1262,14 @@ Init(void) glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor); - glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 40); - glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, specular); + glMaterialf(GL_FRONT, GL_SHININESS, 40); + glMaterialfv(GL_FRONT, GL_SPECULAR, specular); glEnable(GL_NORMALIZE); + glMaterialfv(GL_BACK, GL_DIFFUSE, backColor); +#if 0 + glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, 1); +#endif glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); InitViewInfo(&View); |