hi,
I succefully obtained a cube map at runtime
but in 6 GL_TEXTURE_2D only.
it looks correct on a textured cube.
I’m trying to use them with GL_TEXTURE_CUBE_MAP_ARB.
found some examples but i don’t know where i am wrong.
if you seen any error, notify me please
any comment is welcome.
/* UpdateCubeMap()*/
for (i=0;i<6;i++)
{
glLoadIdentity();
/* appropriate call to glulookat(); */
glPushMatrix();
glViewport(0,0,256,256);
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
RenderScene();
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, WP->textures[52] /*cube map texture*/);
glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+i, 0, 0, 0, 0, 0, 256, 256);
glTexParameteri(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+i,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+i,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+i,GL_TEXTURE_WRAP_S,GL_CLAMP);
glTexParameteri(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+i,GL_TEXTURE_WRAP_T,GL_CLAMP);
glDisable(GL_TEXTURE_CUBE_MAP_ARB);
}
/* rendering */
glPushMatrix();
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, WP->textures[52] /*cube map texture*/);
glTranslatef(...);
glRotatef(...);
glScalef(...);
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glutSolidTeapot(1.0);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_TEXTURE_GEN_R);
glDisable(GL_TEXTURE_CUBE_MAP_ARB);
glPopMatrix();
thx
–
brucemangy