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
  30
  31 #ifndef NVFRAGPROG_H
  32 #define NVFRAGPROG_H
  33
  34 #include "config.h"
  35
  36
  37 /* Fragment input registers / attributes */
  38 #define FRAG_ATTRIB_WPOS  0
  39 #define FRAG_ATTRIB_COL0  1
  40 #define FRAG_ATTRIB_COL1  2
  41 #define FRAG_ATTRIB_FOGC  3
  42 #define FRAG_ATTRIB_TEX0  4
  43 #define FRAG_ATTRIB_TEX1  5
  44 #define FRAG_ATTRIB_TEX2  6
  45 #define FRAG_ATTRIB_TEX3  7
  46 #define FRAG_ATTRIB_TEX4  8
  47 #define FRAG_ATTRIB_TEX5  9
  48 #define FRAG_ATTRIB_TEX6  10
  49 #define FRAG_ATTRIB_TEX7  11
  50
  51 #define FRAG_OUTPUT_COLR  0
  52 #define FRAG_OUTPUT_COLH  1
  53 #define FRAG_OUTPUT_DEPR  2
  54
  55
  56 /* condition codes */
  57 #define COND_GT  1  /* greater than zero */
  58 #define COND_EQ  2  /* equal to zero */
  59 #define COND_LT  3  /* less than zero */
  60 #define COND_UN  4  /* unordered (NaN) */
  61 #define COND_GE  5  /* greater then or equal to zero */
  62 #define COND_LE  6  /* less then or equal to zero */
  63 #define COND_NE  7  /* not equal to zero */
  64 #define COND_TR  8  /* always true */
  65 #define COND_FL  9  /* always false */
  66
  67
  68 /* instruction precision */
  69 #define FLOAT32  0x1
  70 #define FLOAT16  0x2
  71 #define FIXED12  0x4
  72
  73
  74 /* Fragment program instruction opcodes */
  75 enum fp_opcode {
  76    FP_OPCODE_ADD = 1000,
  77    FP_OPCODE_COS,
  78    FP_OPCODE_DDX,
  79    FP_OPCODE_DDY,
  80    FP_OPCODE_DP3,
  81    FP_OPCODE_DP4,
  82    FP_OPCODE_DST,
  83    FP_OPCODE_EX2,
  84    FP_OPCODE_FLR,
  85    FP_OPCODE_FRC,
  86    FP_OPCODE_KIL,
  87    FP_OPCODE_LG2,
  88    FP_OPCODE_LIT,
  89    FP_OPCODE_LRP,
  90    FP_OPCODE_MAD,
  91    FP_OPCODE_MAX,
  92    FP_OPCODE_MIN,
  93    FP_OPCODE_MOV,
  94    FP_OPCODE_MUL,
  95    FP_OPCODE_PK2H,
  96    FP_OPCODE_PK2US,
  97    FP_OPCODE_PK4B,
  98    FP_OPCODE_PK4UB,
  99    FP_OPCODE_POW,
 100    FP_OPCODE_RCP,
 101    FP_OPCODE_RFL,
 102    FP_OPCODE_RSQ,
 103    FP_OPCODE_SEQ,
 104    FP_OPCODE_SFL,
 105    FP_OPCODE_SGE,
 106    FP_OPCODE_SGT,
 107    FP_OPCODE_SIN,
 108    FP_OPCODE_SLE,
 109    FP_OPCODE_SLT,
 110    FP_OPCODE_SNE,
 111    FP_OPCODE_STR,
 112    FP_OPCODE_SUB,
 113    FP_OPCODE_TEX,
 114    FP_OPCODE_TXD,
 115    FP_OPCODE_TXP,
 116    FP_OPCODE_UP2H,
 117    FP_OPCODE_UP2US,
 118    FP_OPCODE_UP4B,
 119    FP_OPCODE_UP4UB,
 120    FP_OPCODE_X2D,
 121    FP_OPCODE_END /* private opcode */
 122 };
 123
 124
 125 /* Instruction source register */
 126 struct fp_src_register
 127 {
 128    enum register_file File;
 129    GLint Index;
 130    GLuint Swizzle[4];
 131    GLboolean NegateBase; /* negate before absolute value? */
 132    GLboolean Abs;        /* take absolute value? */
 133    GLboolean NegateAbs;  /* negate after absolute value? */
 134 };
 135
 136
 137 /* Instruction destination register */
 138 struct fp_dst_register
 139 {
 140    enum register_file File;
 141    GLint Index;
 142    GLboolean WriteMask[4];
 143    GLuint CondMask;
 144    GLuint CondSwizzle[4];
 145 };
 146
 147
 148 /* Fragment program instruction */
 149 struct fp_instruction
 150 {
 151    enum fp_opcode Opcode;
 152    struct fp_src_register SrcReg[3];
 153    struct fp_dst_register DstReg;
 154    GLboolean Saturate;
 155    GLboolean UpdateCondRegister;
 156    GLubyte Precision;    /* FLOAT32, FLOAT16 or FIXED12 */
 157    GLubyte TexSrcUnit;   /* texture unit for TEX, TXD, TXP instructions */
 158    GLubyte TexSrcBit;    /* TEXTURE_1D,2D,3D,CUBE,RECT_BIT source target */
 159 #if FEATURE_MESA_program_debug
 160    GLint StringPos;
 161 #endif
 162 };
 163
 164
 165 #endif