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texture mapping

Started by skinx Sep 19, 2005 at 11:03 PM 3 replies 1.4k views

Original Post

Sep 19, 2005 at 11:03 PM

guys, i have problems doin on the texture mapping on sphere, it just cant map it out.. why? this is just a normal sample (every thing is set, like the image is load): glDisable(GL_LIGHTING); mat_specular[0] = 2.55; mat_specular[1] = 0.0; mat_specular[2] = 2.55; mat_specular[3] = 1.0; glMaterialfv(GL_FRONT, GL_SPECULAR,mat_specular); GLfloat light_position[]={50.0, 200.0,50.0,1.0}; glLightfv(GL_LIGHT0, GL_POSITION, light_position); glPushMatrix(); glTranslatef(a, b, 0.0f); glEnable(GL_TEXTURE_2D); glutSolidSphere(5.0,50.0,10.0); glEnd(); glPopMatrix(); glDisable(GL_TEXTURE_2D); glEnable(GL_LIGHTING); why this code cant load the image? it just turned black...

ff8

Sep 19, 2005 at 11:48 PM

try to put glColor3f(1,1,1); b4 glutSolidSphere and make sure u enabled TEXTURE_2D

NLDEV

Sep 19, 2005 at 11:52 PM

IIRC, the glut drawing routines do not generate texture coordinates, which would be detrimental to your texturing.
...
Hmm, actually just looked at the glut spec. Try drawing a teapot--it seems that glutSolidTeapot is unique in that it does generate texture coordinates.

skinx

Sep 20, 2005 at 12:21 AM

hmmm i tried the glColor3f(1,1,1); but still cant works... i dunno y.. but everything seems alright.. do u guys have other alternative to this?

Kalidor

Sep 20, 2005 at 8:55 AM

Is your texture bound, because you aren't binding it in the code you posted? Did you try with the teapot instead since the other glut objects don't have texture coordinates? Are you sure you're loading and creating the texture correctly? What is that glEnd doing there?

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