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Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_bld.h')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld.h b/src/gallium/drivers/llvmpipe/lp_bld.h new file mode 100644 index 0000000000..88b70d7478 --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_bld.h @@ -0,0 +1,94 @@ +/************************************************************************** + * + * Copyright 2009 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 above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * 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 VMWARE 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. + * + **************************************************************************/ + +#ifndef LP_BLD_H +#define LP_BLD_H + + +/** + * @file + * LLVM IR building helpers interfaces. + * + * We use LLVM-C bindings for now. They are not documented, but follow the C++ + * interfaces very closely, and appear to be complete enough for code + * genration. See + * http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html + * for a standalone example. + */ + +#include <llvm-c/Core.h> + +#include "pipe/p_format.h" + + +/** + * Unpack a pixel into its RGBA components. + * + * @param ptr value with the pointer to the packed pixel. Pointer type is + * irrelevant. + * + * @return RGBA in a 4 floats vector. + */ +LLVMValueRef +lp_build_unpack_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef ptr); + + +/** + * Pack a pixel. + * + * @param rgba 4 float vector with the unpacked components. + */ +void +lp_build_pack_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef ptr, + LLVMValueRef rgba); + + +struct lp_build_loop_state +{ + LLVMBasicBlockRef block; + LLVMValueRef counter; +}; + + +void +lp_build_loop_begin(LLVMBuilderRef builder, + LLVMValueRef start, + struct lp_build_loop_state *state); + + +void +lp_build_loop_end(LLVMBuilderRef builder, + LLVMValueRef end, + LLVMValueRef step, + struct lp_build_loop_state *state); + + +#endif /* !LP_BLD_H */ |