| /************************************************************************** |
| * |
| * 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_ */ |
