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/**************************************************************************
*
* 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"
struct pipe_blend_state;
union lp_type;
/**
* Unpack a pixel into its RGBA components.
*
* @param packed integer.
*
* @return RGBA in a 4 floats vector.
*/
LLVMValueRef
lp_build_unpack_rgba(LLVMBuilderRef builder,
enum pipe_format format,
LLVMValueRef packed);
/**
* Pack a pixel.
*
* @param rgba 4 float vector with the unpacked components.
*/
LLVMValueRef
lp_build_pack_rgba(LLVMBuilderRef builder,
enum pipe_format format,
LLVMValueRef rgba);
/**
* Load 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_load_rgba(LLVMBuilderRef builder,
enum pipe_format format,
LLVMValueRef ptr);
/**
* Store a pixel.
*
* @param rgba 4 float vector with the unpacked components.
*/
void
lp_build_store_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);
/**
* Apply a logic op.
*
* src/dst parameters are packed values. It should work regardless the inputs
* are scalars, or a vector.
*/
LLVMValueRef
lp_build_logicop(LLVMBuilderRef builder,
unsigned logicop_func,
LLVMValueRef src,
LLVMValueRef dst);
LLVMValueRef
lp_build_blend(LLVMBuilderRef builder,
const struct pipe_blend_state *blend,
union lp_type type,
LLVMValueRef src,
LLVMValueRef dst,
LLVMValueRef const_,
unsigned alpha_swizzle);
#endif /* !LP_BLD_H */
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