static GLboolean run_normal_stage	(	GLcontext *	ctx,
		struct tnl_pipeline_stage *	stage
	)		`[static]`

Definition at line 51 of file t_vb_normals.c.

{
   struct normal_stage_data *store = NORMAL_STAGE_DATA(stage);
   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
   const GLfloat *lengths;

   if (!store->NormalTransform)
      return GL_TRUE;

   /* We can only use the display list's saved normal lengths if we've
    * got a transformation matrix with uniform scaling.
    */
   if (_math_matrix_is_general_scale(ctx->ModelviewMatrixStack.Top))
      lengths = NULL;
   else
      lengths = VB->NormalLengthPtr;

   store->NormalTransform( ctx->ModelviewMatrixStack.Top,
               ctx->_ModelViewInvScale,
               VB->AttribPtr[_TNL_ATTRIB_NORMAL],  /* input normals */
               lengths,
               &store->normal ); /* resulting normals */

   if (VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count > 1) {
      store->normal.stride = 4 * sizeof(GLfloat);
   }
   else {
      store->normal.stride = 0;
   }

   VB->AttribPtr[_TNL_ATTRIB_NORMAL] = &store->normal;
   VB->NormalPtr = &store->normal;

   VB->NormalLengthPtr = NULL;  /* no longer valid */
   return GL_TRUE;
}

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