178 lines
5.1 KiB
C
178 lines
5.1 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5
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*
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* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* Private fragment program types and constants only used by files
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* related to fragment programs.
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*
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* XXX TO-DO: Rename this file "fragprog.h" since it's not NV-specific.
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*/
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#ifndef NVFRAGPROG_H
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#define NVFRAGPROG_H
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#include "config.h"
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#include "mtypes.h"
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/**
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* Fragment program output registers.
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* Note: when we fully suppport GL_ARB_draw_buffers we'll have more than
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* one output color.
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*/
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#define FRAG_OUTPUT_COLR 0 /* fragment color */
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#define FRAG_OUTPUT_COLH 1 /* fragment color, half precision (NV) */
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#define FRAG_OUTPUT_DEPR 2 /* depth/Z */
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/* condition codes */
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#define COND_GT 1 /* greater than zero */
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#define COND_EQ 2 /* equal to zero */
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#define COND_LT 3 /* less than zero */
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#define COND_UN 4 /* unordered (NaN) */
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#define COND_GE 5 /* greater then or equal to zero */
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#define COND_LE 6 /* less then or equal to zero */
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#define COND_NE 7 /* not equal to zero */
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#define COND_TR 8 /* always true */
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#define COND_FL 9 /* always false */
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/* instruction precision */
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#define FLOAT32 0x1
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#define FLOAT16 0x2
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#define FIXED12 0x4
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/* Fragment program instruction opcodes */
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enum fp_opcode {
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FP_OPCODE_ABS, /* ARB_f_p only */
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FP_OPCODE_ADD,
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FP_OPCODE_CMP, /* ARB_f_p only */
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FP_OPCODE_COS,
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FP_OPCODE_DDX, /* NV_f_p only */
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FP_OPCODE_DDY, /* NV_f_p only */
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FP_OPCODE_DP3,
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FP_OPCODE_DP4,
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FP_OPCODE_DPH, /* ARB_f_p only */
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FP_OPCODE_DST,
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FP_OPCODE_END, /* private opcode */
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FP_OPCODE_EX2,
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FP_OPCODE_FLR,
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FP_OPCODE_FRC,
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FP_OPCODE_KIL, /* ARB_f_p only */
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FP_OPCODE_KIL_NV, /* NV_f_p only */
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FP_OPCODE_LG2,
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FP_OPCODE_LIT,
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FP_OPCODE_LRP,
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FP_OPCODE_MAD,
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FP_OPCODE_MAX,
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FP_OPCODE_MIN,
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FP_OPCODE_MOV,
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FP_OPCODE_MUL,
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FP_OPCODE_PK2H, /* NV_f_p only */
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FP_OPCODE_PK2US, /* NV_f_p only */
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FP_OPCODE_PK4B, /* NV_f_p only */
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FP_OPCODE_PK4UB, /* NV_f_p only */
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FP_OPCODE_POW,
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FP_OPCODE_PRINT, /* Mesa only */
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FP_OPCODE_RCP,
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FP_OPCODE_RFL, /* NV_f_p only */
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FP_OPCODE_RSQ,
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FP_OPCODE_SCS, /* ARB_f_p only */
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FP_OPCODE_SEQ, /* NV_f_p only */
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FP_OPCODE_SFL, /* NV_f_p only */
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FP_OPCODE_SGE, /* NV_f_p only */
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FP_OPCODE_SGT, /* NV_f_p only */
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FP_OPCODE_SIN,
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FP_OPCODE_SLE, /* NV_f_p only */
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FP_OPCODE_SLT,
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FP_OPCODE_SNE, /* NV_f_p only */
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FP_OPCODE_STR, /* NV_f_p only */
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FP_OPCODE_SUB,
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FP_OPCODE_SWZ, /* ARB_f_p only */
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FP_OPCODE_TEX,
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FP_OPCODE_TXB, /* ARB_f_p only */
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FP_OPCODE_TXD, /* NV_f_p only */
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FP_OPCODE_TXP, /* ARB_f_p only */
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FP_OPCODE_TXP_NV, /* NV_f_p only */
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FP_OPCODE_UP2H, /* NV_f_p only */
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FP_OPCODE_UP2US, /* NV_f_p only */
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FP_OPCODE_UP4B, /* NV_f_p only */
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FP_OPCODE_UP4UB, /* NV_f_p only */
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FP_OPCODE_X2D, /* NV_f_p only - 2d mat mul */
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FP_OPCODE_XPD /* ARB_f_p only - cross product */
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};
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/* Instruction source register */
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struct fp_src_register
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{
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GLuint File:4;
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GLuint Index:8;
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GLuint Swizzle:12;
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GLuint NegateBase:4; /* ARB: negate/extended negate.
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NV: negate before absolute value? */
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GLuint Abs:1; /* NV: take absolute value? */
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GLuint NegateAbs:1; /* NV: negate after absolute value? */
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};
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/* Instruction destination register */
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struct fp_dst_register
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{
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GLuint File:4;
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GLuint Index:8;
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GLuint WriteMask:4;
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GLuint CondMask:4; /* NV: enough bits? */
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GLuint CondSwizzle:12; /* NV: enough bits? */
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};
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/* Fragment program instruction */
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struct fp_instruction
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{
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GLuint Opcode:6;
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GLuint Saturate:1;
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GLuint UpdateCondRegister:1; /* NV */
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GLuint Precision:2; /* NV: unused/unneeded? */
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GLuint TexSrcUnit:4; /* texture unit for TEX, TXD, TXP instructions */
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GLuint TexSrcIdx:3; /* TEXTURE_1D,2D,3D,CUBE,RECT_INDEX source target */
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#if FEATURE_MESA_program_debug
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GLint StringPos:15; /* enough bits? */
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#endif
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void *Data; /* some arbitrary data, only used for PRINT instruction now */
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struct fp_src_register SrcReg[3];
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struct fp_dst_register DstReg;
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};
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extern void
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_mesa_init_fp_instruction(struct fp_instruction *inst);
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#endif
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