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/*
* Copyright (C) 2008 Nicolai Haehnle.
*
* 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, sublicense, 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 NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 __RADEON_PROGRAM_PAIR_H_
#define __RADEON_PROGRAM_PAIR_H_
#include "radeon_code.h"
#include "radeon_opcodes.h"
#include "radeon_program_constants.h"
struct radeon_compiler;
/**
* \file
* Represents a paired ALU instruction, as found in R300 and R500
* fragment programs.
*
* Note that this representation is taking some liberties as far
* as register files are concerned, to allow separate register
* allocation.
*
* Also note that there are some subtleties in that the semantics
* of certain opcodes are implicitly changed in this representation;
* see \ref rc_pair_translate
*/
/* For rgb and alpha instructions when arg[n].Source = RC_PAIR_PRESUB_SRC, then
* the presubtract value will be used, and
* {RGB,Alpha}.Src[RC_PAIR_PRESUB_SRC].File will be set to RC_FILE_PRESUB.
*/
#define RC_PAIR_PRESUB_SRC 3
#define RC_PAIR_SOURCE_NONE 0x0
#define RC_PAIR_SOURCE_RGB 0x1
#define RC_PAIR_SOURCE_ALPHA 0x2
struct rc_pair_instruction_source {
unsigned int Used:1;
unsigned int File:3;
unsigned int Index:RC_REGISTER_INDEX_BITS;
};
struct rc_pair_instruction_arg {
unsigned int Source:2;
unsigned int Swizzle:9;
unsigned int Abs:1;
unsigned int Negate:1;
};
struct rc_pair_sub_instruction {
unsigned int Opcode:8;
unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
unsigned int WriteMask:3;
unsigned int Target:2;
unsigned int OutputWriteMask:3;
unsigned int DepthWriteMask:1;
unsigned int Saturate:1;
struct rc_pair_instruction_source Src[4];
struct rc_pair_instruction_arg Arg[3];
};
struct rc_pair_instruction {
struct rc_pair_sub_instruction RGB;
struct rc_pair_sub_instruction Alpha;
unsigned int WriteALUResult:2;
unsigned int ALUResultCompare:3;
unsigned int Nop:1;
};
typedef void (*rc_pair_foreach_src_fn)
(void *, struct rc_pair_instruction_source *);
/**
* General helper functions for dealing with the paired instruction format.
*/
/*@{*/
int rc_pair_alloc_source(struct rc_pair_instruction *pair,
unsigned int rgb, unsigned int alpha,
rc_register_file file, unsigned int index);
void rc_pair_foreach_source_that_alpha_reads(
struct rc_pair_instruction * pair,
void * data,
rc_pair_foreach_src_fn cb);
void rc_pair_foreach_source_that_rgb_reads(
struct rc_pair_instruction * pair,
void * data,
rc_pair_foreach_src_fn cb);
unsigned int rc_source_type_that_arg_reads(
unsigned int source,
unsigned int swizzle);
/*@}*/
/**
* Compiler passes that operate with the paired format.
*/
/*@{*/
struct radeon_pair_handler;
void rc_pair_translate(struct radeon_compiler *cc, void *user);
void rc_pair_schedule(struct radeon_compiler *cc, void *user);
void rc_pair_regalloc(struct radeon_compiler *cc, void *user);
void rc_pair_regalloc_inputs_only(struct radeon_compiler *cc, void *user);
/*@}*/
#endif /* __RADEON_PROGRAM_PAIR_H_ */
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