#ifndef _INCLUDE_MOJOSHADER_INTERNAL_H_

#define _INCLUDE_MOJOSHADER_INTERNAL_H_

#ifndef __MOJOSHADER_INTERNAL__

#error Do not include this header from your applications.

#endif

// Shader bytecode format is described at MSDN:

// http://msdn.microsoft.com/en-us/library/ms800307.aspx

// HLSL syntax is here:

// http://msdn.microsoft.com/en-us/library/bb509615(VS.85).aspx

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <stdarg.h>

#include <assert.h>

#include "mojoshader.h"

#define DEBUG_PREPROCESSOR 0

#define DEBUG_ASSEMBLY_PARSER 0

#define DEBUG_TOKENIZER ((DEBUG_PREPROCESSOR) || (DEBUG_ASSEMBLY_PARSER))

#if (defined(__APPLE__) && defined(__MACH__))

#define PLATFORM_MACOSX 1

#endif

// This is the highest shader version we currently support.

#define MAX_SHADER_MAJOR 3

#define MAX_SHADER_MINOR 255 // vs_3_sw

// If SUPPORT_PROFILE_* isn't defined, we assume an implicit desire to support.

// You get all the profiles unless you go out of your way to disable them.

#ifndef SUPPORT_PROFILE_D3D

#define SUPPORT_PROFILE_D3D 1

#endif

#ifndef SUPPORT_PROFILE_PASSTHROUGH

#define SUPPORT_PROFILE_BYTECODE 1

#endif

#ifndef SUPPORT_PROFILE_GLSL

#define SUPPORT_PROFILE_GLSL 1

#endif

#ifndef SUPPORT_PROFILE_ARB1

#define SUPPORT_PROFILE_ARB1 1

#endif

// Get basic wankery out of the way here...

#ifdef _WINDOWS

#define ENDLINE_STR "\r\n"

#else

#define ENDLINE_STR "\n";

#endif

typedef unsigned int uint; // this is a printf() helper. don't use for code.

#ifdef _MSC_VER

#include <malloc.h>

#define snprintf _snprintf

#define strcasecmp stricmp

typedef unsigned __int8 uint8;

typedef unsigned __int16 uint16;

typedef unsigned __int32 uint32;

typedef __int32 int32;

// Warning Level 4 considered harmful. :)

#pragma warning(disable: 4100) // "unreferenced formal parameter"

#pragma warning(disable: 4389) // "signed/unsigned mismatch"

#else

#include <stdint.h>

typedef uint8_t uint8;

typedef uint16_t uint16;

typedef uint32_t uint32;

typedef int32_t int32;

#endif

#ifdef __GNUC__

#define ISPRINTF(x,y) __attribute__((format (printf, x, y)))

#else

#define ISPRINTF(x,y)

#endif

#define STATICARRAYLEN(x) ( (sizeof ((x))) / (sizeof ((x)[0])) )

// Byteswap magic...

#if ((defined __GNUC__) && (defined __POWERPC__))

static inline uint32 SWAP32(uint32 x)

{

__asm__ __volatile__("lwbrx %0,0,%1" : "=r" (x) : "r" (&x));

return x;

} // SWAP32

static inline uint16 SWAP16(uint16 x)

{

__asm__ __volatile__("lhbrx %0,0,%1" : "=r" (x) : "r" (&x));

return x;

} // SWAP16

#elif defined(__POWERPC__)

static inline uint32 SWAP32(uint32 x)

{

return ( (((x) >> 24) & 0x000000FF) | (((x) >> 8) & 0x0000FF00) |

(((x) << 8) & 0x00FF0000) | (((x) << 24) & 0xFF000000) );

} // SWAP32

static inline uint16 SWAP16(uint16 x)

{

return ( (((x) >> 8) & 0x00FF) | (((x) << 8) & 0xFF00) );

} // SWAP16

#else

# define SWAP16(x) (x)

# define SWAP32(x) (x)

#endif

static inline int Min(const int a, const int b)

{

return ((a < b) ? a : b);

} // Min

// This is the ID for a D3DXSHADER_CONSTANTTABLE in the bytecode comments.

#define CTAB_ID 0x42415443 // 0x42415443 == 'CTAB'

#define CTAB_SIZE 28 // sizeof (D3DXSHADER_CONSTANTTABLE).

#define CINFO_SIZE 20 // sizeof (D3DXSHADER_CONSTANTINFO).

#define CTYPEINFO_SIZE 16 // sizeof (D3DXSHADER_TYPEINFO).

#define CMEMBERINFO_SIZE 8 // sizeof (D3DXSHADER_STRUCTMEMBERINFO)

// we need to reference these by explicit value occasionally...

#define OPCODE_RET 28

#define OPCODE_IF 40

#define OPCODE_IFC 41

#define OPCODE_BREAK 44

#define OPCODE_BREAKC 45

#define OPCODE_TEXLD 66

#define OPCODE_SETP 94

// TEXLD becomes a different instruction with these instruction controls.

#define CONTROL_TEXLD 0

#define CONTROL_TEXLDP 1

#define CONTROL_TEXLDB 2

// #define this to force app to supply an allocator, so there's no reference

// to the C runtime's malloc() and free()...

#if MOJOSHADER_FORCE_ALLOCATOR

#define MOJOSHADER_internal_malloc NULL

#define MOJOSHADER_internal_free NULL

#else

void *MOJOSHADER_internal_malloc(int bytes, void *d);

void MOJOSHADER_internal_free(void *ptr, void *d);

#endif

// result modifiers.

// !!! FIXME: why isn't this an enum?

#define MOD_SATURATE 0x01

#define MOD_PP 0x02

#define MOD_CENTROID 0x04

typedef enum

{

REG_TYPE_TEMP = 0,

REG_TYPE_INPUT = 1,

REG_TYPE_CONST = 2,

REG_TYPE_ADDRESS = 3,

REG_TYPE_TEXTURE = 3, // ALSO 3!

REG_TYPE_RASTOUT = 4,

REG_TYPE_ATTROUT = 5,

REG_TYPE_TEXCRDOUT = 6,

REG_TYPE_OUTPUT = 6, // ALSO 6!

REG_TYPE_CONSTINT = 7,

REG_TYPE_COLOROUT = 8,

REG_TYPE_DEPTHOUT = 9,

REG_TYPE_SAMPLER = 10,

REG_TYPE_CONST2 = 11,

REG_TYPE_CONST3 = 12,

REG_TYPE_CONST4 = 13,

REG_TYPE_CONSTBOOL = 14,

REG_TYPE_LOOP = 15,

REG_TYPE_TEMPFLOAT16 = 16,

REG_TYPE_MISCTYPE = 17,

REG_TYPE_LABEL = 18,

REG_TYPE_PREDICATE = 19,

REG_TYPE_MAX = 19

} RegisterType;

typedef enum

{

TEXTURE_TYPE_2D = 2,

TEXTURE_TYPE_CUBE = 3,

TEXTURE_TYPE_VOLUME = 4,

} TextureType;

typedef enum

{

RASTOUT_TYPE_POSITION = 0,

RASTOUT_TYPE_FOG = 1,

RASTOUT_TYPE_POINT_SIZE = 2,

RASTOUT_TYPE_MAX = 2

} RastOutType;

typedef enum

{

MISCTYPE_TYPE_POSITION = 0,

MISCTYPE_TYPE_FACE = 1,

MISCTYPE_TYPE_MAX = 1

} MiscTypeType;

// source modifiers.

typedef enum

{

SRCMOD_NONE,

SRCMOD_NEGATE,

SRCMOD_BIAS,

SRCMOD_BIASNEGATE,

SRCMOD_SIGN,

SRCMOD_SIGNNEGATE,

SRCMOD_COMPLEMENT,

SRCMOD_X2,

SRCMOD_X2NEGATE,

SRCMOD_DZ,

SRCMOD_DW,

SRCMOD_ABS,

SRCMOD_ABSNEGATE,

SRCMOD_NOT,

SRCMOD_TOTAL

} SourceMod;

typedef struct

{

const uint32 *token; // this is the unmolested token in the stream.

int regnum;

int relative;

int writemask; // xyzw or rgba (all four, not split out).

int writemask0; // x or red

int writemask1; // y or green

int writemask2; // z or blue

int writemask3; // w or alpha

int orig_writemask; // writemask before mojoshader tweaks it.

int result_mod;

int result_shift;

RegisterType regtype;

} DestArgInfo;

static inline int scalar_register(const MOJOSHADER_shaderType shader_type,

const RegisterType regtype, const int regnum)

{

switch (regtype)

{

case REG_TYPE_DEPTHOUT:

case REG_TYPE_CONSTBOOL:

case REG_TYPE_LOOP:

return 1;

case REG_TYPE_MISCTYPE:

if ( ((const MiscTypeType) regnum) == MISCTYPE_TYPE_FACE )

return 1;

return 0;

case REG_TYPE_PREDICATE:

return (shader_type == MOJOSHADER_TYPE_PIXEL) ? 1 : 0;

default: break;

} // switch

return 0;

} // scalar_register

typedef enum

{

MOJOSHADER_PARSEPHASE_NOTSTARTED,

MOJOSHADER_PARSEPHASE_WORKING,

MOJOSHADER_PARSEPHASE_DONE,

} MOJOSHADER_parsePhase;

extern MOJOSHADER_error MOJOSHADER_out_of_mem_error;

extern MOJOSHADER_parseData MOJOSHADER_out_of_mem_data;

typedef struct ErrorList

} ErrorList;

// preprocessor stuff.

typedef enum

{

TOKEN_UNKNOWN = 256, // start past ASCII character values.

// These are all C-like constructs. Tokens < 256 may be single

// chars (like '+' or whatever). These are just multi-char sequences

// (like "+=" or whatever).

TOKEN_IDENTIFIER,

TOKEN_INT_LITERAL,

TOKEN_FLOAT_LITERAL,

TOKEN_STRING_LITERAL,

TOKEN_RSHIFTASSIGN,

TOKEN_LSHIFTASSIGN,

TOKEN_ADDASSIGN,

TOKEN_SUBASSIGN,

TOKEN_MULTASSIGN,

TOKEN_DIVASSIGN,

TOKEN_MODASSIGN,

TOKEN_XORASSIGN,

TOKEN_ANDASSIGN,

TOKEN_ORASSIGN,

TOKEN_INCREMENT,

TOKEN_DECREMENT,

TOKEN_RSHIFT,

TOKEN_LSHIFT,

TOKEN_ANDAND,

TOKEN_OROR,

TOKEN_LEQ,

TOKEN_GEQ,

TOKEN_EQL,

TOKEN_NEQ,

TOKEN_HASHHASH,

// This is returned at the end of input...no more to process.

TOKEN_EOI,

// This is returned for char sequences we think are bogus. You'll have

// to judge for yourself. In most cases, you'll probably just fail with

// bogus syntax without explicitly checking for this token.

TOKEN_BAD_CHARS,

// This is returned if there's an error condition (the error is returned

// as a NULL-terminated string from preprocessor_nexttoken(), instead

// of actual token data). You can continue getting tokens after this

// is reported. It happens for things like missing #includes, etc.

TOKEN_PREPROCESSING_ERROR,

// These are all caught by the preprocessor. Caller won't ever see them.

// They control the preprocessor (#includes new files, etc).

TOKEN_PP_INCLUDE,

TOKEN_PP_LINE,

TOKEN_PP_DEFINE,

TOKEN_PP_UNDEF,

TOKEN_PP_IF,

TOKEN_PP_IFDEF,

TOKEN_PP_IFNDEF,

TOKEN_PP_ELSE,

TOKEN_PP_ELIF,

TOKEN_PP_ENDIF,

TOKEN_PP_ERROR, // caught, becomes TOKEN_PREPROCESSING_ERROR

TOKEN_INCOMPLETE_COMMENT, // caught, becomes TOKEN_PREPROCESSING_ERROR

} Token;

// This is opaque.

struct Preprocessor;

typedef struct Preprocessor Preprocessor;

typedef struct IncludeState

} IncludeState;

Token preprocessor_internal_lexer(IncludeState *s);

// This will only fail if the allocator fails, so it doesn't return any

// error code...NULL on failure.

Preprocessor *preprocessor_start(const char *fname, const char *source,

MOJOSHADER_malloc m, MOJOSHADER_free f, void *d);

void preprocessor_end(Preprocessor *pp);

int preprocessor_outofmemory(Preprocessor *pp);

const char *preprocessor_nexttoken(Preprocessor *_ctx,

unsigned int *_len, Token *_token);

const char *preprocessor_sourcepos(Preprocessor *pp, unsigned int *pos);

void MOJOSHADER_print_debug_token(const char *subsystem, const char *token,

const unsigned int tokenlen,

const Token tokenval);

#endif // _INCLUDE_MOJOSHADER_INTERNAL_H_

#if MOJOSHADER_DO_INSTRUCTION_TABLE

// These have to be in the right order! Arrays are indexed by the value

// of the instruction token.

// INSTRUCTION_STATE means this opcode has to update the state machine

// (we're entering an ELSE block, etc). INSTRUCTION means there's no

// state, just go straight to the emitters.

// !!! FIXME: Some of these MOJOSHADER_TYPE_ANYs need to have their scope

// !!! FIXME: reduced to just PIXEL or VERTEX.

INSTRUCTION(NOP, "NOP", 1, NULL, MOJOSHADER_TYPE_ANY)

INSTRUCTION(MOV, "MOV", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(ADD, "ADD", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(SUB, "SUB", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(MAD, "MAD", 1, DSSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(MUL, "MUL", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(RCP, "RCP", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(RSQ, "RSQ", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(DP3, "DP3", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(DP4, "DP4", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(MIN, "MIN", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(MAX, "MAX", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(SLT, "SLT", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(SGE, "SGE", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(EXP, "EXP", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(LOG, "LOG", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(LIT, "LIT", 3, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(DST, "DST", 1, DSS, MOJOSHADER_TYPE_VERTEX)

INSTRUCTION(LRP, "LRP", 2, DSSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(FRC, "FRC", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(M4X4, "M4X4", 4, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(M4X3, "M4X3", 3, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(M3X4, "M3X4", 4, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(M3X3, "M3X3", 3, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(M3X2, "M3X2", 2, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(CALL, "CALL", 2, S, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(CALLNZ, "CALLNZ", 3, SS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(LOOP, "LOOP", 3, SS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(RET, "RET", 1, NULL, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(ENDLOOP, "ENDLOOP", 2, NULL, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(LABEL, "LABEL", 0, S, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(DCL, "DCL", 0, DCL, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(POW, "POW", 3, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(CRS, "CRS", 2, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(SGN, "SGN", 3, DSSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(ABS, "ABS", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(NRM, "NRM", 3, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(SINCOS, "SINCOS", 8, SINCOS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(REP, "REP", 3, S, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(ENDREP, "ENDREP", 2, NULL, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(IF, "IF", 3, S, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(IFC, "IF", 3, SS, MOJOSHADER_TYPE_ANY)

INSTRUCTION(ELSE, "ELSE", 1, NULL, MOJOSHADER_TYPE_ANY) // !!! FIXME: state!

INSTRUCTION(ENDIF, "ENDIF", 1, NULL, MOJOSHADER_TYPE_ANY) // !!! FIXME: state!

INSTRUCTION_STATE(BREAK, "BREAK", 1, NULL, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(BREAKC, "BREAK", 3, SS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(MOVA, "MOVA", 1, DS, MOJOSHADER_TYPE_VERTEX)

INSTRUCTION_STATE(DEFB, "DEFB", 0, DEFB, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(DEFI, "DEFI", 0, DEFI, MOJOSHADER_TYPE_ANY)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION_STATE(TEXCRD, "TEXCRD", 1, TEXCRD, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(TEXKILL, "TEXKILL", 2, D, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(TEXLD, "TEXLD", 1, TEXLD, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXBEM, "TEXBEM", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXBEML, "TEXBEML", 2, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXREG2AR, "TEXREG2AR", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXREG2GB, "TEXREG2GB", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X2PAD, "TEXM3X2PAD", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X2TEX, "TEXM3X2TEX", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X3PAD, "TEXM3X3PAD", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X3TEX, "TEXM3X3TEX", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(RESERVED, 0, 0, NULL, MOJOSHADER_TYPE_UNKNOWN)

INSTRUCTION(TEXM3X3SPEC, "TEXM3X3SPEC", 1, DSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X3VSPEC, "TEXM3X3VSPEC", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(EXPP, "EXPP", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(LOGP, "LOGP", 1, DS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(CND, "CND", 1, DSSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(DEF, "DEF", 0, DEF, MOJOSHADER_TYPE_ANY)

INSTRUCTION(TEXREG2RGB, "TEXREG2RGB", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXDP3TEX, "TEXDP3TEX", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X2DEPTH, "TEXM3X2DEPTH", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXDP3, "TEXDP3", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXM3X3, "TEXM3X3", 1, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXDEPTH, "TEXDEPTH", 1, D, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(CMP, "CMP", 1, DSSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(BEM, "BEM", 2, DSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(DP2ADD, "DP2ADD", 2, DSSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(DSX, "DSX", 2, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(DSY, "DSY", 2, DS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION(TEXLDD, "TEXLDD", 3, DSSSS, MOJOSHADER_TYPE_PIXEL)

INSTRUCTION_STATE(SETP, "SETP", 1, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(TEXLDL, "TEXLDL", 2, DSS, MOJOSHADER_TYPE_ANY)

INSTRUCTION_STATE(BREAKP, "BREAKP", 3, S, MOJOSHADER_TYPE_ANY)

#endif

// end of mojoshader_internal.h ...