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[svn] Initial add.
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icculus committed Feb 9, 2008
1 parent fb6f7c0 commit 01672a9824edf0b16a741a7b6ab0322bf02e1c24
Showing with 347 additions and 0 deletions.
  1. +5 −0 CMakeLists.txt
  2. +22 −0 LICENSE.txt
  3. +320 −0 parse.c
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PROJECT(d3d2glsl)
ADD_EXECUTABLE(parse parse.c)

# End of CMakeLists.txt ...

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Copyright (c) 2008 Ryan C. Gordon.

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from
the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software in a
product, an acknowledgment in the product documentation would be
appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Ryan C. Gordon <icculus@icculus.org>
320 parse.c
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#include <stdio.h>
#include <stdlib.h>

#define SWAP32(x) (x)
typedef unsigned int uint;
typedef unsigned char uint8;
typedef unsigned int uint32;

// This enum complements of Filip Navara's public domain dev-cpp d3d9 header.
typedef enum
{
OPCODE_NOP = 0,
OPCODE_MOV = 1,
OPCODE_ADD = 2,
OPCODE_SUB = 3,
OPCODE_MAD = 4,
OPCODE_MUL = 5,
OPCODE_RCP = 6,
OPCODE_RSQ = 7,
OPCODE_DP3 = 8,
OPCODE_DP4 = 9,
OPCODE_MIN = 10,
OPCODE_MAX = 11,
OPCODE_SLT = 12,
OPCODE_SGE = 13,
OPCODE_EXP = 14,
OPCODE_LOG = 15,
OPCODE_LIT = 16,
OPCODE_DST = 17,
OPCODE_LRP = 18,
OPCODE_FRC = 19,
OPCODE_M4x4 = 20,
OPCODE_M4x3 = 21,
OPCODE_M3x4 = 22,
OPCODE_M3x3 = 23,
OPCODE_M3x2 = 24,
OPCODE_CALL = 25,
OPCODE_CALLNZ = 26,
OPCODE_LOOP = 27,
OPCODE_RET = 28,
OPCODE_ENDLOOP = 29,
OPCODE_LABEL = 30,
OPCODE_DCL = 31,
OPCODE_POW = 32,
OPCODE_CRS = 33,
OPCODE_SGN = 34,
OPCODE_ABS = 35,
OPCODE_NRM = 36,
OPCODE_SINCOS = 37,
OPCODE_REP = 38,
OPCODE_ENDREP = 39,
OPCODE_IF = 40,
OPCODE_IFC = 41,
OPCODE_ELSE = 42,
OPCODE_ENDIF = 43,
OPCODE_BREAK = 44,
OPCODE_BREAKC = 45,
OPCODE_MOVA = 46,
OPCODE_DEFB = 47,
OPCODE_DEFI = 48,
OPCODE_TEXCOORD = 64,
OPCODE_TEXKILL = 65,
OPCODE_TEX = 66,
OPCODE_TEXBEM = 67,
OPCODE_TEXBEML = 68,
OPCODE_TEXREG2AR = 69,
OPCODE_TEXREG2GB = 70,
OPCODE_TEXM3x2PAD = 71,
OPCODE_TEXM3x2TEX = 72,
OPCODE_TEXM3x3PAD = 73,
OPCODE_TEXM3x3TEX = 74,
OPCODE_RESERVED0 = 75,
OPCODE_TEXM3x3SPEC = 76,
OPCODE_TEXM3x3VSPEC = 77,
OPCODE_EXPP = 78,
OPCODE_LOGP = 79,
OPCODE_CND = 80,
OPCODE_DEF = 81,
OPCODE_TEXREG2RGB = 82,
OPCODE_TEXDP3TEX = 83,
OPCODE_TEXM3x2DEPTH = 84,
OPCODE_TEXDP3 = 85,
OPCODE_TEXM3x3 = 86,
OPCODE_TEXDEPTH = 87,
OPCODE_CMP = 88,
OPCODE_BEM = 89,
OPCODE_DP2ADD = 90,
OPCODE_DSX = 91,
OPCODE_DSY = 92,
OPCODE_TEXLDD = 93,
OPCODE_SETP = 94,
OPCODE_TEXLDL = 95,
OPCODE_BREAKP = 96,
OPCODE_PHASE = 0xfffd,
} OpcodeVal;


static int parse_version_token(const uint32 *tokens, const uint32 tokencount)
{
if (tokencount == 0)
return -1; // no tokens at all?

const uint32 token = SWAP32(*tokens);
const uint32 shadertype = ((token >> 16) & 0xFFFF);
const uint32 major = ((token >> 8) & 0xFF);
const uint32 minor = (token & 0xFF);

if (shadertype == 0xFFFF)
printf("Pixel shader\n");
else if (shadertype == 0xFFFE)
printf("Vertex shader\n");
else
return -1; // geometry shader? Unsupported at the moment. FAIL.

printf("Version %u.%u\n", (uint) major, (uint) minor);

return 1; // ate one token.
} // parse_version_token


static int parse_comment_token(const uint32 *tokens, const uint32 tokencount)
{
const uint32 token = SWAP32(*tokens);
if ((token & 0xFFFF) != 0xFFFE)
return 0; // not a comment token.
else if ((token & 0x80000000) != 0)
return -1; // msdn docs say high bit must be zero. FAIL.

const uint32 commenttoks = ((token >> 16) & 0xFFFF);
const uint32 commentlen = commenttoks * sizeof (uint32);
printf("Comment (%u tokens, %u bytes): ",
(uint) commenttoks, (uint) commentlen);

uint32 i = 0;
const char *comment = (const char *) (tokens+1);
while (i < commentlen)
fputc(comment[i++], stdout);

printf("\n");

return commenttoks + 1; // comment data plus the initial token.
} // parse_comment_token


static int parse_end_token(const uint32 *tokens, const uint32 tokencount)
{
if (SWAP32(*tokens) != 0x0000FFFF) // end token is always 0x0000FFFF.
return 0; // not us, eat no tokens.

printf("END\n");

// we _must_ be last. If so, eat the token. Otherwise: FAIL.
return (tokencount == 1) ? 1 : -1;
} // parse_end_token


static int parse_instruction_token(const uint32 *tokens, const uint32 tokencount)
{
const uint32 token = SWAP32(*tokens);
const uint32 opcode = (token & 0xFFFF);
const uint32 controls = ((token >> 16) & 0xFF);
const uint32 insttoks = ((token >> 24) & 0x0F);
const int coissue = (token & 0x40000000) ? 1 : 0;
const int predicated = (token & 0x10000000) ? 1 : 0;

if ((token & 0x80000000) != 0)
return -1; // msdn docs say high bit must be zero. FAIL.

#define PARSE_OP(op) printf("OPCODE %s\n", #op);
//case OPCODE_##op:
// parse_op_##op(tokens+1, opcode, controls, insttoks, coissue, predicated);
// break;

PARSE_OP(NOP);
PARSE_OP(MOV);
PARSE_OP(ADD);
PARSE_OP(SUB);
PARSE_OP(MAD);
PARSE_OP(MUL);
PARSE_OP(RCP);
PARSE_OP(RSQ);
PARSE_OP(DP3);
PARSE_OP(DP4);
PARSE_OP(MIN);
PARSE_OP(MAX);
PARSE_OP(SLT);
PARSE_OP(SGE);
PARSE_OP(EXP);
PARSE_OP(LOG);
PARSE_OP(LIT);
PARSE_OP(DST);
PARSE_OP(LRP);
PARSE_OP(FRC);
PARSE_OP(M4x4);
PARSE_OP(M4x3);
PARSE_OP(M3x4);
PARSE_OP(M3x3);
PARSE_OP(M3x2);
PARSE_OP(CALL);
PARSE_OP(CALLNZ);
PARSE_OP(LOOP);
PARSE_OP(RET);
PARSE_OP(ENDLOOP);
PARSE_OP(LABEL);
PARSE_OP(DCL);
PARSE_OP(POW);
PARSE_OP(CRS);
PARSE_OP(SGN);
PARSE_OP(ABS);
PARSE_OP(NRM);
PARSE_OP(SINCOS);
PARSE_OP(REP);
PARSE_OP(ENDREP);
PARSE_OP(IF);
PARSE_OP(IFC);
PARSE_OP(ELSE);
PARSE_OP(ENDIF);
PARSE_OP(BREAK);
PARSE_OP(BREAKC);
PARSE_OP(MOVA);
PARSE_OP(DEFB);
PARSE_OP(DEFI);
PARSE_OP(TEXCOORD);
PARSE_OP(TEXKILL);
PARSE_OP(TEX);
PARSE_OP(TEXBEM);
PARSE_OP(TEXBEML);
PARSE_OP(TEXREG2AR);
PARSE_OP(TEXREG2GB);
PARSE_OP(TEXM3x2PAD);
PARSE_OP(TEXM3x2TEX);
PARSE_OP(TEXM3x3PAD);
PARSE_OP(TEXM3x3TEX);
PARSE_OP(RESERVED0);
PARSE_OP(TEXM3x3SPEC);
PARSE_OP(TEXM3x3VSPEC);
PARSE_OP(EXPP);
PARSE_OP(LOGP);
PARSE_OP(CND);
PARSE_OP(DEF);
PARSE_OP(TEXREG2RGB);
PARSE_OP(TEXDP3TEX);
PARSE_OP(TEXM3x2DEPTH);
PARSE_OP(TEXDP3);
PARSE_OP(TEXM3x3);
PARSE_OP(TEXDEPTH);
PARSE_OP(CMP);
PARSE_OP(BEM);
PARSE_OP(DP2ADD);
PARSE_OP(DSX);
PARSE_OP(DSY);
PARSE_OP(TEXLDD);
PARSE_OP(SETP);
PARSE_OP(TEXLDL);
PARSE_OP(BREAKP);
PARSE_OP(PHASE);

#undef PARSE_OP
} // parse_instruction_token


static int parse_token(const uint32 *tokens, const uint32 tokencount)
{
int retval = -1;
int rc = 0;

if (tokencount == 0)
return -1; // shouldn't happen, but just in case...

if ((rc = parse_comment_token(tokens, tokencount)) != 0)
return rc;

if ((rc = parse_end_token(tokens, tokencount)) != 0)
return rc;

if ((rc = parse_instruction_token(tokens, tokencount)) != 0)
return rc;

return -1; // nothing handled this? FAIL.
} // parse_token


int D3D2GLSL_parse(const uint8 *tokenbuf, const uint32 bufsize)
{
const uint32 *tokens = (const uint32 *) tokenbuf;
uint32 tokencount = bufsize / sizeof (uint32);
int rc = parse_version_token(tokens, tokencount);

// parse out the rest of the tokens after the version token...
while ((rc > 0) && (tokencount > 0))
{
tokens += rc;
tokencount -= rc;
rc = parse_token(tokens, tokencount);
} // while

return ((rc <= 0) || (tokencount > 0)) ? 0 : 1;
} // D3D2GLSL_parse


int main(int argc, char **argv)
{
if (argv[1] != NULL)
{
FILE *io = fopen(argv[1], "rb");
if (io != NULL)
{
uint8 *buf = (uint8 *) malloc(1000000);
int rc = fread(buf, 1, 1000000, io);
fclose(io);
D3D2GLSL_parse(buf, rc);
free(buf);
} // if
} // if

return 0;
} // main

// end of parse.c ...

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