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PROJECT(d3d2glsl) | ||
ADD_EXECUTABLE(parse parse.c) | ||
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# End of CMakeLists.txt ... | ||
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Copyright (c) 2008 Ryan C. Gordon. | ||
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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. | ||
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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: | ||
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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. | ||
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2. Altered source versions must be plainly marked as such, and must not be | ||
misrepresented as being the original software. | ||
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3. This notice may not be removed or altered from any source distribution. | ||
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Ryan C. Gordon <icculus@icculus.org> |
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#include <stdio.h> | ||
#include <stdlib.h> | ||
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#define SWAP32(x) (x) | ||
typedef unsigned int uint; | ||
typedef unsigned char uint8; | ||
typedef unsigned int uint32; | ||
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// 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; | ||
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static int parse_version_token(const uint32 *tokens, const uint32 tokencount) | ||
{ | ||
if (tokencount == 0) | ||
return -1; // no tokens at all? | ||
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const uint32 token = SWAP32(*tokens); | ||
const uint32 shadertype = ((token >> 16) & 0xFFFF); | ||
const uint32 major = ((token >> 8) & 0xFF); | ||
const uint32 minor = (token & 0xFF); | ||
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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. | ||
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printf("Version %u.%u\n", (uint) major, (uint) minor); | ||
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return 1; // ate one token. | ||
} // parse_version_token | ||
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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. | ||
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const uint32 commenttoks = ((token >> 16) & 0xFFFF); | ||
const uint32 commentlen = commenttoks * sizeof (uint32); | ||
printf("Comment (%u tokens, %u bytes): ", | ||
(uint) commenttoks, (uint) commentlen); | ||
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uint32 i = 0; | ||
const char *comment = (const char *) (tokens+1); | ||
while (i < commentlen) | ||
fputc(comment[i++], stdout); | ||
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printf("\n"); | ||
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return commenttoks + 1; // comment data plus the initial token. | ||
} // parse_comment_token | ||
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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. | ||
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printf("END\n"); | ||
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// we _must_ be last. If so, eat the token. Otherwise: FAIL. | ||
return (tokencount == 1) ? 1 : -1; | ||
} // parse_end_token | ||
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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; | ||
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if ((token & 0x80000000) != 0) | ||
return -1; // msdn docs say high bit must be zero. FAIL. | ||
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#define PARSE_OP(op) printf("OPCODE %s\n", #op); | ||
//case OPCODE_##op: | ||
// parse_op_##op(tokens+1, opcode, controls, insttoks, coissue, predicated); | ||
// break; | ||
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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); | ||
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#undef PARSE_OP | ||
} // parse_instruction_token | ||
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static int parse_token(const uint32 *tokens, const uint32 tokencount) | ||
{ | ||
int retval = -1; | ||
int rc = 0; | ||
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if (tokencount == 0) | ||
return -1; // shouldn't happen, but just in case... | ||
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if ((rc = parse_comment_token(tokens, tokencount)) != 0) | ||
return rc; | ||
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if ((rc = parse_end_token(tokens, tokencount)) != 0) | ||
return rc; | ||
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if ((rc = parse_instruction_token(tokens, tokencount)) != 0) | ||
return rc; | ||
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return -1; // nothing handled this? FAIL. | ||
} // parse_token | ||
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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); | ||
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// 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 | ||
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return ((rc <= 0) || (tokencount > 0)) ? 0 : 1; | ||
} // D3D2GLSL_parse | ||
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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 | ||
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return 0; | ||
} // main | ||
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// end of parse.c ... | ||
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