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