Hai
I want to draw a background and then some 3D objects. But when i draw the 3D objects my background disappears. Please mention whats wrong with this code
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
/****** Drawing Background Texture*******/
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glDisable(GL_DEPTH_TEST);
glOrtho(0.0f,w,0.0f,h, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushAttrib(GL_LIGHTING_BIT);
glLoadIdentity();
glShadeModel(GL_FLAT);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL );
const GLfloat fw((GLfloat) w);
const GLfloat fh((GLfloat) h);
glBegin(GL_QUADS);
glNormal3f( 0.0f, 0.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( fw, fh, 0.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(0, fh, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(0, 0, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( fw, 0, 0.0f);
glEnd();
glDisable(GL_TEXTURE_2D);
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_MODELVIEW);
glPopAttrib();
/*******End Background Texture *********/
/***Draw 3D objects and rotation/
glViewport(0 + AutoScrollPosition.X, 0 - (nRange - Height) - AutoScrollPosition.Y, nRange, nRange );
// Reset projection matrix stack
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glShadeModel(GL_FLAT);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
// Establish clipping volume (left, right, bottom, top, near, far)
glOrtho ((-nRange/2.0), (nRange/2.0), (nRange/2.0 ), -(nRange/2.0), -(nRange/2.0), (nRange/2.0));
// Reset Model view matrix stack
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRotatef(60,1.0,1.0,0.0);
glRotatef(45 * rot,0.0,1.0,0.0);
glScalef(scale3D,scale3D,scale3D);
DrawObject()
Whats wrong with this code.
Please help
Thanks