src/mesa/drivers/dri/r300/compiler/radeon_code.c

   1 /*
   2  * Copyright (C) 2009 Nicolai Haehnle.
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sublicense, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #include "radeon_code.h"
  29
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include "radeon_program.h"
  34
  35 void rc_constants_init(struct rc_constant_list * c)
  36 {
  37         memset(c, 0, sizeof(*c));
  38 }
  39
  40 /**
  41  * Copy a constants structure, assuming that the destination structure
  42  * is not initialized.
  43  */
  44 void rc_constants_copy(struct rc_constant_list * dst, struct rc_constant_list * src)
  45 {
  46         dst->Constants = malloc(sizeof(struct rc_constant) * src->Count);
  47         memcpy(dst->Constants, src->Constants, sizeof(struct rc_constant) * src->Count);
  48         dst->Count = src->Count;
  49         dst->_Reserved = src->Count;
  50 }
  51
  52 void rc_constants_destroy(struct rc_constant_list * c)
  53 {
  54         free(c->Constants);
  55         memset(c, 0, sizeof(*c));
  56 }
  57
  58 unsigned rc_constants_add(struct rc_constant_list * c, struct rc_constant * constant)
  59 {
  60         unsigned index = c->Count;
  61
  62         if (c->Count >= c->_Reserved) {
  63                 struct rc_constant * newlist;
  64
  65                 c->_Reserved = c->_Reserved * 2;
  66                 if (!c->_Reserved)
  67                         c->_Reserved = 16;
  68
  69                 newlist = malloc(sizeof(struct rc_constant) * c->_Reserved);
  70                 memcpy(newlist, c->Constants, sizeof(struct rc_constant) * c->Count);
  71
  72                 free(c->Constants);
  73                 c->Constants = newlist;
  74         }
  75
  76         c->Constants[index] = *constant;
  77         c->Count++;
  78
  79         return index;
  80 }
  81
  82
  83 /**
  84  * Add a state vector to the constant list, while trying to avoid duplicates.
  85  */
  86 unsigned rc_constants_add_state(struct rc_constant_list * c, unsigned state0, unsigned state1)
  87 {
  88         unsigned index;
  89         struct rc_constant constant;
  90
  91         for(index = 0; index < c->Count; ++index) {
  92                 if (c->Constants[index].Type == RC_CONSTANT_STATE) {
  93                         if (c->Constants[index].u.State[0] == state0 &&
  94                             c->Constants[index].u.State[1] == state1)
  95                                 return index;
  96                 }
  97         }
  98
  99         memset(&constant, 0, sizeof(constant));
 100         constant.Type = RC_CONSTANT_STATE;
 101         constant.Size = 4;
 102         constant.u.State[0] = state0;
 103         constant.u.State[1] = state1;
 104
 105         return rc_constants_add(c, &constant);
 106 }
 107
 108
 109 /**
 110  * Add an immediate vector to the constant list, while trying to avoid
 111  * duplicates.
 112  */
 113 unsigned rc_constants_add_immediate_vec4(struct rc_constant_list * c, const float * data)
 114 {
 115         unsigned index;
 116         struct rc_constant constant;
 117
 118         for(index = 0; index < c->Count; ++index) {
 119                 if (c->Constants[index].Type == RC_CONSTANT_IMMEDIATE) {
 120                         if (!memcmp(c->Constants[index].u.Immediate, data, sizeof(float)*4))
 121                                 return index;
 122                 }
 123         }
 124
 125         memset(&constant, 0, sizeof(constant));
 126         constant.Type = RC_CONSTANT_IMMEDIATE;
 127         constant.Size = 4;
 128         memcpy(constant.u.Immediate, data, sizeof(float) * 4);
 129
 130         return rc_constants_add(c, &constant);
 131 }
 132
 133
 134 /**
 135  * Add an immediate scalar to the constant list, while trying to avoid
 136  * duplicates.
 137  */
 138 unsigned rc_constants_add_immediate_scalar(struct rc_constant_list * c, float data, unsigned * swizzle)
 139 {
 140         unsigned index;
 141         int free_index = -1;
 142         struct rc_constant constant;
 143
 144         for(index = 0; index < c->Count; ++index) {
 145                 if (c->Constants[index].Type == RC_CONSTANT_IMMEDIATE) {
 146                         for(unsigned comp = 0; comp < c->Constants[index].Size; ++comp) {
 147                                 if (c->Constants[index].u.Immediate[comp] == data) {
 148                                         *swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
 149                                         return index;
 150                                 }
 151                         }
 152
 153                         if (c->Constants[index].Size < 4)
 154                                 free_index = index;
 155                 }
 156         }
 157
 158         if (free_index >= 0) {
 159                 unsigned comp = c->Constants[free_index].Size++;
 160                 c->Constants[free_index].u.Immediate[comp] = data;
 161                 *swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
 162                 return free_index;
 163         }
 164
 165         memset(&constant, 0, sizeof(constant));
 166         constant.Type = RC_CONSTANT_IMMEDIATE;
 167         constant.Size = 1;
 168         constant.u.Immediate[0] = data;
 169         *swizzle = RC_SWIZZLE_XXXX;
 170
 171         return rc_constants_add(c, &constant);
 172 }