src/mesa/main/nvfragprog.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  5.1
   4  *
   5  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /* Private fragment program types and constants only used by files
  27  * related to fragment programs.
  28  *
  29  * XXX TO-DO: Rename this file "fragprog.h" since it's not NV-specific.
  30  */
  31
  32
  33 #ifndef NVFRAGPROG_H
  34 #define NVFRAGPROG_H
  35
  36 #include "config.h"
  37
  38
  39 /* Fragment input registers / attributes */
  40 #define FRAG_ATTRIB_WPOS  0
  41 #define FRAG_ATTRIB_COL0  1
  42 #define FRAG_ATTRIB_COL1  2
  43 #define FRAG_ATTRIB_FOGC  3
  44 #define FRAG_ATTRIB_TEX0  4
  45 #define FRAG_ATTRIB_TEX1  5
  46 #define FRAG_ATTRIB_TEX2  6
  47 #define FRAG_ATTRIB_TEX3  7
  48 #define FRAG_ATTRIB_TEX4  8
  49 #define FRAG_ATTRIB_TEX5  9
  50 #define FRAG_ATTRIB_TEX6  10
  51 #define FRAG_ATTRIB_TEX7  11
  52
  53 /* Bitmasks for the above */
  54 #define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
  55 #define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
  56 #define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
  57 #define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
  58 #define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
  59 #define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
  60 #define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
  61 #define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
  62 #define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
  63 #define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
  64 #define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
  65 #define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
  66
  67 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|       \
  68                            FRAG_BIT_TEX1|       \
  69                            FRAG_BIT_TEX2|       \
  70                            FRAG_BIT_TEX3|       \
  71                            FRAG_BIT_TEX4|       \
  72                            FRAG_BIT_TEX5|       \
  73                            FRAG_BIT_TEX6|       \
  74                            FRAG_BIT_TEX7)
  75
  76 /* output registers */
  77 #define FRAG_OUTPUT_COLR  0
  78 #define FRAG_OUTPUT_COLH  1
  79 #define FRAG_OUTPUT_DEPR  2
  80
  81
  82 /* condition codes */
  83 #define COND_GT  1  /* greater than zero */
  84 #define COND_EQ  2  /* equal to zero */
  85 #define COND_LT  3  /* less than zero */
  86 #define COND_UN  4  /* unordered (NaN) */
  87 #define COND_GE  5  /* greater then or equal to zero */
  88 #define COND_LE  6  /* less then or equal to zero */
  89 #define COND_NE  7  /* not equal to zero */
  90 #define COND_TR  8  /* always true */
  91 #define COND_FL  9  /* always false */
  92
  93
  94 /* instruction precision */
  95 #define FLOAT32  0x1
  96 #define FLOAT16  0x2
  97 #define FIXED12  0x4
  98
  99
 100 /* Fragment program instruction opcodes */
 101 enum fp_opcode {
 102    FP_OPCODE_ABS = 1000,     /* ARB_f_p only */
 103    FP_OPCODE_ADD,
 104    FP_OPCODE_CMP,            /* ARB_f_p only */
 105    FP_OPCODE_COS,
 106    FP_OPCODE_DDX,            /* NV_f_p only */
 107    FP_OPCODE_DDY,            /* NV_f_p only */
 108    FP_OPCODE_DP3,
 109    FP_OPCODE_DP4,
 110    FP_OPCODE_DPH,            /* ARB_f_p only */
 111    FP_OPCODE_DST,
 112    FP_OPCODE_EX2,
 113    FP_OPCODE_FLR,
 114    FP_OPCODE_FRC,
 115    FP_OPCODE_KIL,
 116    FP_OPCODE_LG2,
 117    FP_OPCODE_LIT,
 118    FP_OPCODE_LRP,
 119    FP_OPCODE_MAD,
 120    FP_OPCODE_MAX,
 121    FP_OPCODE_MIN,
 122    FP_OPCODE_MOV,
 123    FP_OPCODE_MUL,
 124    FP_OPCODE_PK2H,           /* NV_f_p only */
 125    FP_OPCODE_PK2US,          /* NV_f_p only */
 126    FP_OPCODE_PK4B,           /* NV_f_p only */
 127    FP_OPCODE_PK4UB,          /* NV_f_p only */
 128    FP_OPCODE_POW,
 129    FP_OPCODE_RCP,
 130    FP_OPCODE_RFL,            /* NV_f_p only */
 131    FP_OPCODE_RSQ,
 132    FP_OPCODE_SCS,            /* ARB_f_p only */
 133    FP_OPCODE_SEQ,            /* NV_f_p only */
 134    FP_OPCODE_SFL,            /* NV_f_p only */
 135    FP_OPCODE_SGE,            /* NV_f_p only */
 136    FP_OPCODE_SGT,            /* NV_f_p only */
 137    FP_OPCODE_SIN,
 138    FP_OPCODE_SLE,            /* NV_f_p only */
 139    FP_OPCODE_SLT,
 140    FP_OPCODE_SNE,            /* NV_f_p only */
 141    FP_OPCODE_STR,            /* NV_f_p only */
 142    FP_OPCODE_SUB,
 143    FP_OPCODE_SWZ,            /* ARB_f_p only */
 144    FP_OPCODE_TEX,
 145    FP_OPCODE_TXB,            /* ARB_f_p only */
 146    FP_OPCODE_TXD,            /* NV_f_p only */
 147    FP_OPCODE_TXP,
 148    FP_OPCODE_UP2H,           /* NV_f_p only */
 149    FP_OPCODE_UP2US,          /* NV_f_p only */
 150    FP_OPCODE_UP4B,           /* NV_f_p only */
 151    FP_OPCODE_UP4UB,          /* NV_f_p only */
 152    FP_OPCODE_X2D,            /* XPD in ARB_f_p */
 153    FP_OPCODE_END /* private opcode */
 154 };
 155
 156
 157 /* Instruction source register */
 158 struct fp_src_register
 159 {
 160    enum register_file File;
 161    GLint Index;
 162    GLuint Swizzle[4];
 163    GLboolean NegateBase; /* negate before absolute value? */
 164    GLboolean Abs;        /* take absolute value? */
 165    GLboolean NegateAbs;  /* negate after absolute value? */
 166 };
 167
 168
 169 /* Instruction destination register */
 170 struct fp_dst_register
 171 {
 172    enum register_file File;
 173    GLint Index;
 174    GLboolean WriteMask[4];
 175    GLuint CondMask;
 176    GLuint CondSwizzle[4];
 177 };
 178
 179
 180 /* Fragment program instruction */
 181 struct fp_instruction
 182 {
 183    enum fp_opcode Opcode;
 184    struct fp_src_register SrcReg[3];
 185    struct fp_dst_register DstReg;
 186    GLboolean Saturate;
 187    GLboolean UpdateCondRegister;
 188    GLubyte Precision;    /* FLOAT32, FLOAT16 or FIXED12 */
 189    GLubyte TexSrcUnit;   /* texture unit for TEX, TXD, TXP instructions */
 190    GLubyte TexSrcBit;    /* TEXTURE_1D,2D,3D,CUBE,RECT_BIT source target */
 191 #if FEATURE_MESA_program_debug
 192    GLint StringPos;
 193 #endif
 194 };
 195
 196
 197 #endif