Hi! I'm trying to implement normal-maps, i read this, http://tfpsly.planet-d.net/english/3d/pplight_bump.html
I would be very happy if someone explained how to implement it
Some test code i wrote
//...Enable GL_LIGHT0...
glActiveTextureARB(GL_TEXTURE0_ARB);
glEnable(GL_TEXTURE_2D);
//...Bind texture...
// I'm not sure about this
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE_EXT);
glTexEnvi(GL_TEXTURE_ENV,GL_RGB_SCALE_EXT,1);
glActiveTextureARB(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_2D);
//...Bind normalmap...
// Taken from the URL. 0x8741 = GL_DOT3_RGBA_EXT (google)
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE_EXT);
glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB_EXT, 0x8741);
glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB_EXT,GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB_EXT,GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB_EXT,GL_PREVIOUS_EXT);
glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB_EXT,GL_SRC_COLOR);
glBegin(GL_QUADS);
glMultiTexCoord2fARB(GL_TEXTURE0_ARB,0,0);
glMultiTexCoord2fARB(GL_TEXTURE1_ARB,0,0);
glNormal3f(0,1,0);
glVertex3f(-30.0f, 0, -30.0f);
glMultiTexCoord2fARB(GL_TEXTURE0_ARB,0,12);
glMultiTexCoord2fARB(GL_TEXTURE1_ARB,0,12);
glNormal3f(0,1,0);
glVertex3f(-30.0f, 0, 30.0f);
glMultiTexCoord2fARB(GL_TEXTURE0_ARB,12,12);
glMultiTexCoord2fARB(GL_TEXTURE1_ARB,12,12);
glNormal3f(0,1,0);
glVertex3f( 30.0f, 0, 30.0f);
glMultiTexCoord2fARB(GL_TEXTURE0_ARB,12,0);
glMultiTexCoord2fARB(GL_TEXTURE1_ARB,12,0);
glNormal3f(0,1,0);
glVertex3f( 30.0f, 0, -30.0f);
glEnd();
glActiveTextureARB(GL_TEXTURE1_ARB);
glDisable(GL_TEXTURE_2D);
glActiveTextureARB(GL_TEXTURE0_ARB);
glDisable(GL_TEXTURE_2D);
Cheers!
[edited by - Sunray on March 7, 2003 6:25:44 AM]
[edited by - Sunray on March 7, 2003 6:26:25 AM]
[edited by - Sunray on March 7, 2003 6:26:45 AM]
