0,0 → 1,239 |
/* |
* Copyright (C) 2008-2009 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. |
* |
*/ |
|
#include "radeon_program_pair.h" |
|
#include "radeon_compiler_util.h" |
|
#include <stdlib.h> |
|
/** |
* Return the source slot where we installed the given register access, |
* or -1 if no slot was free anymore. |
*/ |
int rc_pair_alloc_source(struct rc_pair_instruction *pair, |
unsigned int rgb, unsigned int alpha, |
rc_register_file file, unsigned int index) |
{ |
int candidate = -1; |
int candidate_quality = -1; |
unsigned int alpha_used = 0; |
unsigned int rgb_used = 0; |
int i; |
|
if ((!rgb && !alpha) || file == RC_FILE_NONE) |
return 0; |
|
/* Make sure only one presubtract operation is used per instruction. */ |
if (file == RC_FILE_PRESUB) { |
if (rgb && pair->RGB.Src[RC_PAIR_PRESUB_SRC].Used |
&& index != pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index) { |
return -1; |
} |
|
if (alpha && pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Used |
&& index != pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index) { |
return -1; |
} |
} |
|
for(i = 0; i < 3; ++i) { |
int q = 0; |
if (rgb) { |
if (pair->RGB.Src[i].Used) { |
if (pair->RGB.Src[i].File != file || |
pair->RGB.Src[i].Index != index) { |
rgb_used++; |
continue; |
} |
q++; |
} |
} |
if (alpha) { |
if (pair->Alpha.Src[i].Used) { |
if (pair->Alpha.Src[i].File != file || |
pair->Alpha.Src[i].Index != index) { |
alpha_used++; |
continue; |
} |
q++; |
} |
} |
if (q > candidate_quality) { |
candidate_quality = q; |
candidate = i; |
} |
} |
|
if (file == RC_FILE_PRESUB) { |
candidate = RC_PAIR_PRESUB_SRC; |
} else if (candidate < 0 || (rgb && rgb_used > 2) |
|| (alpha && alpha_used > 2)) { |
return -1; |
} |
|
/* candidate >= 0 */ |
|
if (rgb) { |
pair->RGB.Src[candidate].Used = 1; |
pair->RGB.Src[candidate].File = file; |
pair->RGB.Src[candidate].Index = index; |
if (candidate == RC_PAIR_PRESUB_SRC) { |
/* For registers with the RC_FILE_PRESUB file, |
* the index stores the presubtract op. */ |
int src_regs = rc_presubtract_src_reg_count(index); |
for(i = 0; i < src_regs; i++) { |
pair->RGB.Src[i].Used = 1; |
} |
} |
} |
if (alpha) { |
pair->Alpha.Src[candidate].Used = 1; |
pair->Alpha.Src[candidate].File = file; |
pair->Alpha.Src[candidate].Index = index; |
if (candidate == RC_PAIR_PRESUB_SRC) { |
/* For registers with the RC_FILE_PRESUB file, |
* the index stores the presubtract op. */ |
int src_regs = rc_presubtract_src_reg_count(index); |
for(i=0; i < src_regs; i++) { |
pair->Alpha.Src[i].Used = 1; |
} |
} |
} |
|
return candidate; |
} |
|
static void pair_foreach_source_callback( |
struct rc_pair_instruction * pair, |
void * data, |
rc_pair_foreach_src_fn cb, |
unsigned int swz, |
unsigned int src) |
{ |
/* swz > 3 means that the swizzle is either not used, or a constant |
* swizzle (e.g. 0, 1, 0.5). */ |
if(swz > 3) |
return; |
|
if(swz == RC_SWIZZLE_W) { |
if (src == RC_PAIR_PRESUB_SRC) { |
unsigned int i; |
unsigned int src_count = rc_presubtract_src_reg_count( |
pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index); |
for(i = 0; i < src_count; i++) { |
cb(data, &pair->Alpha.Src[i]); |
} |
} else { |
cb(data, &pair->Alpha.Src[src]); |
} |
} else { |
if (src == RC_PAIR_PRESUB_SRC) { |
unsigned int i; |
unsigned int src_count = rc_presubtract_src_reg_count( |
pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index); |
for(i = 0; i < src_count; i++) { |
cb(data, &pair->RGB.Src[i]); |
} |
} |
else { |
cb(data, &pair->RGB.Src[src]); |
} |
} |
} |
|
void rc_pair_foreach_source_that_alpha_reads( |
struct rc_pair_instruction * pair, |
void * data, |
rc_pair_foreach_src_fn cb) |
{ |
unsigned int i; |
const struct rc_opcode_info * info = |
rc_get_opcode_info(pair->Alpha.Opcode); |
for(i = 0; i < info->NumSrcRegs; i++) { |
pair_foreach_source_callback(pair, data, cb, |
GET_SWZ(pair->Alpha.Arg[i].Swizzle, 0), |
pair->Alpha.Arg[i].Source); |
} |
} |
|
void rc_pair_foreach_source_that_rgb_reads( |
struct rc_pair_instruction * pair, |
void * data, |
rc_pair_foreach_src_fn cb) |
{ |
unsigned int i; |
const struct rc_opcode_info * info = |
rc_get_opcode_info(pair->RGB.Opcode); |
for(i = 0; i < info->NumSrcRegs; i++) { |
unsigned int chan; |
unsigned int swz = RC_SWIZZLE_UNUSED; |
/* Find a swizzle that is either X,Y,Z,or W. We assume here |
* that if one channel swizzles X,Y, or Z, then none of the |
* other channels swizzle W, and vice-versa. */ |
for(chan = 0; chan < 4; chan++) { |
swz = GET_SWZ(pair->RGB.Arg[i].Swizzle, chan); |
if(swz == RC_SWIZZLE_X || swz == RC_SWIZZLE_Y |
|| swz == RC_SWIZZLE_Z || swz == RC_SWIZZLE_W) |
continue; |
} |
pair_foreach_source_callback(pair, data, cb, |
swz, |
pair->RGB.Arg[i].Source); |
} |
} |
|
struct rc_pair_instruction_source * rc_pair_get_src( |
struct rc_pair_instruction * pair_inst, |
struct rc_pair_instruction_arg * arg) |
{ |
unsigned int type; |
|
type = rc_source_type_swz(arg->Swizzle); |
|
if (type & RC_SOURCE_RGB) { |
return &pair_inst->RGB.Src[arg->Source]; |
} else if (type & RC_SOURCE_ALPHA) { |
return &pair_inst->Alpha.Src[arg->Source]; |
} else { |
return NULL; |
} |
} |
|
int rc_pair_get_src_index( |
struct rc_pair_instruction * pair_inst, |
struct rc_pair_instruction_source * src) |
{ |
int i; |
for (i = 0; i < 3; i++) { |
if (&pair_inst->RGB.Src[i] == src |
|| &pair_inst->Alpha.Src[i] == src) { |
return i; |
} |
} |
return -1; |
} |