/************************************************************************** * * Copyright 2010 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * **************************************************************************/ #ifndef LP_BLD_QUAD_H_ #define LP_BLD_QUAD_H_ #include "gallivm/lp_bld.h" struct lp_build_context; /* * Each quad is composed of four elements. * * ######### * # 0 | 1 # * #---+---# * # 2 | 3 # * ######### */ enum lp_bld_quad { LP_BLD_QUAD_TOP_LEFT = 0, LP_BLD_QUAD_TOP_RIGHT = 1, LP_BLD_QUAD_BOTTOM_LEFT = 2, LP_BLD_QUAD_BOTTOM_RIGHT = 3 }; /* * (Vector) derivates. * * More than one quad is supported. The only requirement is that the vector * contains a whole number of quads: * * ######### ######### ... * # 0 | 1 # # 4 | 5 # * #---+---# #---+---# ... * # 2 | 3 # # 6 | 7 # * ######### ######### ... */ LLVMValueRef lp_build_ddx(struct lp_build_context *bld, LLVMValueRef a); LLVMValueRef lp_build_ddy(struct lp_build_context *bld, LLVMValueRef a); /* * Packed derivatives (one derivative for each direction per quad) */ LLVMValueRef lp_build_packed_ddx_ddy_twocoord(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b); LLVMValueRef lp_build_packed_ddx_ddy_onecoord(struct lp_build_context *bld, LLVMValueRef a); #endif /* LP_BLD_QUAD_H_ */