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 #define FRAG_OUTPUT_COLR  0
  54 #define FRAG_OUTPUT_COLH  1
  55 #define FRAG_OUTPUT_DEPR  2
  56
  57
  58 /* condition codes */
  59 #define COND_GT  1  /* greater than zero */
  60 #define COND_EQ  2  /* equal to zero */
  61 #define COND_LT  3  /* less than zero */
  62 #define COND_UN  4  /* unordered (NaN) */
  63 #define COND_GE  5  /* greater then or equal to zero */
  64 #define COND_LE  6  /* less then or equal to zero */
  65 #define COND_NE  7  /* not equal to zero */
  66 #define COND_TR  8  /* always true */
  67 #define COND_FL  9  /* always false */
  68
  69
  70 /* instruction precision */
  71 #define FLOAT32  0x1
  72 #define FLOAT16  0x2
  73 #define FIXED12  0x4
  74
  75
  76 /* Fragment program instruction opcodes */
  77 enum fp_opcode {
  78    FP_OPCODE_ABS = 1000,     /* ARB_f_p only */
  79    FP_OPCODE_ADD,
  80    FP_OPCODE_CMP,            /* ARB_f_p only */
  81    FP_OPCODE_COS,
  82    FP_OPCODE_DDX,            /* NV_f_p only */
  83    FP_OPCODE_DDY,            /* NV_f_p only */
  84    FP_OPCODE_DP3,
  85    FP_OPCODE_DP4,
  86    FP_OPCODE_DPH,            /* ARB_f_p only */
  87    FP_OPCODE_DST,
  88    FP_OPCODE_EX2,
  89    FP_OPCODE_FLR,
  90    FP_OPCODE_FRC,
  91    FP_OPCODE_KIL,
  92    FP_OPCODE_LG2,
  93    FP_OPCODE_LIT,
  94    FP_OPCODE_LRP,
  95    FP_OPCODE_MAD,
  96    FP_OPCODE_MAX,
  97    FP_OPCODE_MIN,
  98    FP_OPCODE_MOV,
  99    FP_OPCODE_MUL,
 100    FP_OPCODE_PK2H,           /* NV_f_p only */
 101    FP_OPCODE_PK2US,          /* NV_f_p only */
 102    FP_OPCODE_PK4B,           /* NV_f_p only */
 103    FP_OPCODE_PK4UB,          /* NV_f_p only */
 104    FP_OPCODE_POW,
 105    FP_OPCODE_RCP,
 106    FP_OPCODE_RFL,            /* NV_f_p only */
 107    FP_OPCODE_RSQ,
 108    FP_OPCODE_SCS,            /* ARB_f_p only */
 109    FP_OPCODE_SEQ,            /* NV_f_p only */
 110    FP_OPCODE_SFL,            /* NV_f_p only */
 111    FP_OPCODE_SGE,            /* NV_f_p only */
 112    FP_OPCODE_SGT,            /* NV_f_p only */
 113    FP_OPCODE_SIN,
 114    FP_OPCODE_SLE,            /* NV_f_p only */
 115    FP_OPCODE_SLT,
 116    FP_OPCODE_SNE,            /* NV_f_p only */
 117    FP_OPCODE_STR,            /* NV_f_p only */
 118    FP_OPCODE_SUB,
 119    FP_OPCODE_SWZ,            /* ARB_f_p only */
 120    FP_OPCODE_TEX,
 121    FP_OPCODE_TXB,            /* ARB_f_p only */
 122    FP_OPCODE_TXD,            /* NV_f_p only */
 123    FP_OPCODE_TXP,
 124    FP_OPCODE_UP2H,           /* NV_f_p only */
 125    FP_OPCODE_UP2US,          /* NV_f_p only */
 126    FP_OPCODE_UP4B,           /* NV_f_p only */
 127    FP_OPCODE_UP4UB,          /* NV_f_p only */
 128    FP_OPCODE_X2D,            /* XPD in ARB_f_p */
 129    FP_OPCODE_END /* private opcode */
 130 };
 131
 132
 133 /* Instruction source register */
 134 struct fp_src_register
 135 {
 136    enum register_file File;
 137    GLint Index;
 138    GLuint Swizzle[4];
 139    GLboolean NegateBase; /* negate before absolute value? */
 140    GLboolean Abs;        /* take absolute value? */
 141    GLboolean NegateAbs;  /* negate after absolute value? */
 142 };
 143
 144
 145 /* Instruction destination register */
 146 struct fp_dst_register
 147 {
 148    enum register_file File;
 149    GLint Index;
 150    GLboolean WriteMask[4];
 151    GLuint CondMask;
 152    GLuint CondSwizzle[4];
 153 };
 154
 155
 156 /* Fragment program instruction */
 157 struct fp_instruction
 158 {
 159    enum fp_opcode Opcode;
 160    struct fp_src_register SrcReg[3];
 161    struct fp_dst_register DstReg;
 162    GLboolean Saturate;
 163    GLboolean UpdateCondRegister;
 164    GLubyte Precision;    /* FLOAT32, FLOAT16 or FIXED12 */
 165    GLubyte TexSrcUnit;   /* texture unit for TEX, TXD, TXP instructions */
 166    GLubyte TexSrcBit;    /* TEXTURE_1D,2D,3D,CUBE,RECT_BIT source target */
 167 #if FEATURE_MESA_program_debug
 168    GLint StringPos;
 169 #endif
 170 };
 171
 172
 173 #endif