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mojoshader_effects.c
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/**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#define __MOJOSHADER_INTERNAL__ 1
#include "mojoshader_internal.h"
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#ifdef MOJOSHADER_EFFECT_SUPPORT
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#include <math.h>
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void MOJOSHADER_runPreshader(const MOJOSHADER_preshader *preshader,
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float *outregs)
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{
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const float *inregs = preshader->registers;
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// this is fairly straightforward, as there aren't any branching
// opcodes in the preshader instruction set (at the moment, at least).
const int scalarstart = (int) MOJOSHADER_PRESHADEROP_SCALAR_OPS;
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double *temps = NULL;
if (preshader->temp_count > 0)
{
temps = (double *) alloca(sizeof (double) * preshader->temp_count);
memset(temps, '\0', sizeof (double) * preshader->temp_count);
} // if
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double dst[4] = { 0, 0, 0, 0 };
double src[3][4] = { { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 } };
const double *src0 = &src[0][0];
const double *src1 = &src[1][0];
const double *src2 = &src[2][0];
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MOJOSHADER_preshaderInstruction *inst = preshader->instructions;
int instit;
for (instit = 0; instit < preshader->instruction_count; instit++, inst++)
{
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const MOJOSHADER_preshaderOperand *operand = inst->operands;
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const int elems = inst->element_count;
const int elemsbytes = sizeof (double) * elems;
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const int isscalarop = (inst->opcode >= scalarstart);
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assert(elems >= 0);
assert(elems <= 4);
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// load up our operands...
int opiter, elemiter;
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for (opiter = 0; opiter < inst->operand_count-1; opiter++, operand++)
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{
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const int isscalar = ((isscalarop) && (opiter == 0));
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const unsigned int index = operand->index;
switch (operand->type)
{
case MOJOSHADER_PRESHADEROPERAND_LITERAL:
{
if (!isscalar)
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{
assert((index + elems) <= preshader->literal_count);
memcpy(&src[opiter][0], &preshader->literals[index], elemsbytes);
} // if
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else
{
for (elemiter = 0; elemiter < elems; elemiter++)
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src[opiter][elemiter] = preshader->literals[index];
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} // else
break;
} // case
case MOJOSHADER_PRESHADEROPERAND_INPUT:
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if (operand->array_register_count > 0)
{
int i;
const int *regsi = (const int *) inregs;
int arrIndex = regsi[((index >> 4) * 4) + ((index >> 2) & 3)];
for (i = 0; i < operand->array_register_count; i++)
{
arrIndex = regsi[operand->array_registers[i] + arrIndex];
}
src[opiter][0] = arrIndex;
} // if
else if (isscalar)
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src[opiter][0] = inregs[index];
else
{
int cpy;
for (cpy = 0; cpy < elems; cpy++)
src[opiter][cpy] = inregs[index+cpy];
} // else
break;
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case MOJOSHADER_PRESHADEROPERAND_OUTPUT:
if (isscalar)
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src[opiter][0] = outregs[index];
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else
{
int cpy;
for (cpy = 0; cpy < elems; cpy++)
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src[opiter][cpy] = outregs[index+cpy];
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} // else
break;
case MOJOSHADER_PRESHADEROPERAND_TEMP:
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if (temps != NULL)
{
if (isscalar)
src[opiter][0] = temps[index];
else
memcpy(src[opiter], temps + index, elemsbytes);
} // if
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break;
default:
assert(0 && "unexpected preshader operand type.");
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return;
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} // switch
} // for
// run the actual instruction, store result to dst.
int i;
switch (inst->opcode)
{
#define OPCODE_CASE(op, val) \
case MOJOSHADER_PRESHADEROP_##op: \
for (i = 0; i < elems; i++) { dst[i] = val; } \
break;
//OPCODE_CASE(NOP, 0.0) // not a real instruction.
OPCODE_CASE(MOV, src0[i])
OPCODE_CASE(NEG, -src0[i])
OPCODE_CASE(RCP, 1.0 / src0[i])
OPCODE_CASE(FRC, src0[i] - floor(src0[i]))
OPCODE_CASE(EXP, exp(src0[i]))
OPCODE_CASE(LOG, log(src0[i]))
OPCODE_CASE(RSQ, 1.0 / sqrt(src0[i]))
OPCODE_CASE(SIN, sin(src0[i]))
OPCODE_CASE(COS, cos(src0[i]))
OPCODE_CASE(ASIN, asin(src0[i]))
OPCODE_CASE(ACOS, acos(src0[i]))
OPCODE_CASE(ATAN, atan(src0[i]))
OPCODE_CASE(MIN, (src0[i] < src1[i]) ? src0[i] : src1[i])
OPCODE_CASE(MAX, (src0[i] > src1[i]) ? src0[i] : src1[i])
OPCODE_CASE(LT, (src0[i] < src1[i]) ? 1.0 : 0.0)
OPCODE_CASE(GE, (src0[i] >= src1[i]) ? 1.0 : 0.0)
OPCODE_CASE(ADD, src0[i] + src1[i])
OPCODE_CASE(MUL, src0[i] * src1[i])
OPCODE_CASE(ATAN2, atan2(src0[i], src1[i]))
OPCODE_CASE(DIV, src0[i] / src1[i])
OPCODE_CASE(CMP, (src0[i] >= 0.0) ? src1[i] : src2[i])
//OPCODE_CASE(NOISE, ???) // !!! FIXME: don't know what this does
//OPCODE_CASE(MOVC, ???) // !!! FIXME: don't know what this does
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OPCODE_CASE(MIN_SCALAR, (src0[0] < src1[i]) ? src0[0] : src1[i])
OPCODE_CASE(MAX_SCALAR, (src0[0] > src1[i]) ? src0[0] : src1[i])
OPCODE_CASE(LT_SCALAR, (src0[0] < src1[i]) ? 1.0 : 0.0)
OPCODE_CASE(GE_SCALAR, (src0[0] >= src1[i]) ? 1.0 : 0.0)
OPCODE_CASE(ADD_SCALAR, src0[0] + src1[i])
OPCODE_CASE(MUL_SCALAR, src0[0] * src1[i])
OPCODE_CASE(ATAN2_SCALAR, atan2(src0[0], src1[i]))
OPCODE_CASE(DIV_SCALAR, src0[0] / src1[i])
//OPCODE_CASE(DOT_SCALAR) // !!! FIXME: isn't this just a MUL?
//OPCODE_CASE(NOISE_SCALAR, ???) // !!! FIXME: ?
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#undef OPCODE_CASE
case MOJOSHADER_PRESHADEROP_DOT:
{
double final = 0.0;
for (i = 0; i < elems; i++)
final += src0[i] * src1[i];
for (i = 0; i < elems; i++)
dst[i] = final; // !!! FIXME: is this right?
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break;
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} // case
default:
assert(0 && "Unhandled preshader opcode!");
break;
} // switch
// Figure out where dst wants to be stored.
if (operand->type == MOJOSHADER_PRESHADEROPERAND_TEMP)
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{
assert(preshader->temp_count >=
operand->index + (elemsbytes / sizeof (double)));
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memcpy(temps + operand->index, dst, elemsbytes);
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} // if
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else
{
assert(operand->type == MOJOSHADER_PRESHADEROPERAND_OUTPUT);
for (i = 0; i < elems; i++)
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outregs[operand->index + i] = (float) dst[i];
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} // else
} // for
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} // MOJOSHADER_runPreshader
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static MOJOSHADER_effect MOJOSHADER_out_of_mem_effect = {
1, &MOJOSHADER_out_of_mem_error, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static uint32 readui32(const uint8 **_ptr, uint32 *_len)
{
uint32 retval = 0;
if (*_len < sizeof (retval))
*_len = 0;
else
{
const uint32 *ptr = (const uint32 *) *_ptr;
retval = SWAP32(*ptr);
*_ptr += sizeof (retval);
*_len -= sizeof (retval);
} // else
return retval;
} // readui32
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static char *readstring(const uint8 *base,
const uint32 offset,
MOJOSHADER_malloc m,
void *d)
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{
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// !!! FIXME: sanity checks!
// !!! FIXME: verify this doesn't go past EOF looking for a null.
const char *str = ((const char *) base) + offset;
const uint32 len = *((const uint32 *) str);
char *strptr = NULL;
if (len == 0) return NULL; /* No length? No string. */
strptr = (char *) m(len, d);
memcpy(strptr, str + 4, len);
return strptr;
} // readstring
static int findparameter(const MOJOSHADER_effectParam *params,
const uint32 param_count,
const char *name)
{
int i;
for (i = 0; i < param_count; i++)
if (strcmp(name, params[i].value.name) == 0)
return i;
assert(0 && "Parameter not found!");
}
static void readvalue(const uint8 *base,
const uint32 typeoffset,
const uint32 valoffset,
MOJOSHADER_effectValue *value,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
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int i, j, k;
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const uint8 *typeptr = base + typeoffset;
const uint8 *valptr = base + valoffset;
unsigned int typelen = 9999999; // !!! FIXME
const uint32 type = readui32(&typeptr, &typelen);
const uint32 valclass = readui32(&typeptr, &typelen);
const uint32 name = readui32(&typeptr, &typelen);
const uint32 semantic = readui32(&typeptr, &typelen);
const uint32 numelements = readui32(&typeptr, &typelen);
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value->type.parameter_type = (MOJOSHADER_symbolType) type;
value->type.parameter_class = (MOJOSHADER_symbolClass) valclass;
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value->name = readstring(base, name, m, d);
value->semantic = readstring(base, semantic, m, d);
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value->type.elements = numelements;
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/* Class sanity check */
assert(valclass >= MOJOSHADER_SYMCLASS_SCALAR && valclass <= MOJOSHADER_SYMCLASS_STRUCT);
if (valclass == MOJOSHADER_SYMCLASS_SCALAR
|| valclass == MOJOSHADER_SYMCLASS_VECTOR
|| valclass == MOJOSHADER_SYMCLASS_MATRIX_ROWS
|| valclass == MOJOSHADER_SYMCLASS_MATRIX_COLUMNS)
{
/* These classes only ever contain scalar values */
assert(type >= MOJOSHADER_SYMTYPE_BOOL && type <= MOJOSHADER_SYMTYPE_FLOAT);
const uint32 columncount = readui32(&typeptr, &typelen);
const uint32 rowcount = readui32(&typeptr, &typelen);
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value->type.columns = columncount;
value->type.rows = rowcount;
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uint32 siz = 4 * rowcount;
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if (numelements > 0)
siz *= numelements;
value->value_count = siz;
siz *= 4;
value->values = m(siz, d);
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memset(value->values, '\0', siz);
siz /= 16;
for (i = 0; i < siz; i++)
memcpy(value->valuesF + (i << 2), valptr + ((columncount << 2) * i), columncount << 2);
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} // if
else if (valclass == MOJOSHADER_SYMCLASS_OBJECT)
{
/* This class contains either samplers or "objects" */
assert(type >= MOJOSHADER_SYMTYPE_STRING && type <= MOJOSHADER_SYMTYPE_VERTEXSHADER);
if (type == MOJOSHADER_SYMTYPE_SAMPLER
|| type == MOJOSHADER_SYMTYPE_SAMPLER1D
|| type == MOJOSHADER_SYMTYPE_SAMPLER2D
|| type == MOJOSHADER_SYMTYPE_SAMPLER3D
|| type == MOJOSHADER_SYMTYPE_SAMPLERCUBE)
{
unsigned int vallen = 9999999; // !!! FIXME
const uint32 numstates = readui32(&valptr, &vallen);
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value->value_count = numstates;
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const uint32 siz = sizeof(MOJOSHADER_effectSamplerState) * numstates;
value->values = m(siz, d);
memset(value->values, '\0', siz);
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for (i = 0; i < numstates; i++)
{
MOJOSHADER_effectSamplerState *state = &value->valuesSS[i];
const uint32 stype = readui32(&valptr, &vallen) & ~0xA0;
/*const uint32 FIXME =*/ readui32(&valptr, &vallen);
const uint32 statetypeoffset = readui32(&valptr, &vallen);
const uint32 statevaloffset = readui32(&valptr, &vallen);
state->type = (MOJOSHADER_samplerStateType) stype;
readvalue(base, statetypeoffset, statevaloffset,
&state->value, objects,
m, d);
if (stype == MOJOSHADER_SAMP_TEXTURE)
objects[state->value.valuesI[0]].type = (MOJOSHADER_symbolType) type;
} // for
} // if
else
{
uint32 numobjects = 1;
if (numelements > 0)
numobjects = numelements;
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value->value_count = numobjects;
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const uint32 siz = 4 * numobjects;
value->values = m(siz, d);
memcpy(value->values, valptr, siz);
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for (i = 0; i < value->value_count; i++)
objects[value->valuesI[i]].type = (MOJOSHADER_symbolType) type;
} // else
} // else if
else if (valclass == MOJOSHADER_SYMCLASS_STRUCT)
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{
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uint32 siz;
value->type.member_count = readui32(&typeptr, &typelen);
siz = value->type.member_count * sizeof (MOJOSHADER_symbolStructMember);
value->type.members = (MOJOSHADER_symbolStructMember *) m(siz, d);
uint32 structsize = 0;
for (i = 0; i < value->type.member_count; i++)
{
MOJOSHADER_symbolStructMember *mem = &value->type.members[i];
mem->info.parameter_type = (MOJOSHADER_symbolType) readui32(&typeptr, &typelen);
mem->info.parameter_class = (MOJOSHADER_symbolClass) readui32(&typeptr, &typelen);
const uint32 memname = readui32(&typeptr, &typelen);
/*const uint32 memsemantic =*/ readui32(&typeptr, &typelen);
mem->name = readstring(base, memname, m, d);
mem->info.elements = readui32(&typeptr, &typelen);
mem->info.columns = readui32(&typeptr, &typelen);
mem->info.rows = readui32(&typeptr, &typelen);
// !!! FIXME: Nested structs! -flibit
assert(mem->info.parameter_class >= MOJOSHADER_SYMCLASS_SCALAR
&& mem->info.parameter_class <= MOJOSHADER_SYMCLASS_VECTOR);
assert(mem->info.parameter_type >= MOJOSHADER_SYMTYPE_BOOL
&& mem->info.parameter_type <= MOJOSHADER_SYMTYPE_FLOAT);
mem->info.member_count = 0;
mem->info.members = NULL;
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uint32 memsize = 4 * mem->info.rows;
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if (mem->info.elements > 0)
memsize *= mem->info.elements;
structsize += memsize;
} // for
value->type.columns = structsize;
value->type.rows = 1;
value->value_count = structsize;
if (numelements > 0)
value->value_count *= numelements;
siz = value->value_count * 4;
value->values = m(siz, d);
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memset(value->values, '\0', siz);
int dst_offset = 0, src_offset = 0;
i = 0;
do
{
for (j = 0; j < value->type.member_count; j++)
{
siz = value->type.members[j].info.rows * value->type.members[j].info.elements;
for (k = 0; k < siz; k++)
{
memcpy(value->valuesF + dst_offset,
typeptr + src_offset, /* Yes, typeptr. -flibit */
value->type.members[j].info.columns << 2);
dst_offset += 4;
src_offset += value->type.members[j].info.columns << 2;
} // for
}
} while (++i < numelements);
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} // else if
} // readvalue
static void readannotations(const uint32 numannos,
const uint8 *base,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effectAnnotation **annotations,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
int i;
if (numannos == 0) return;
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const uint32 siz = sizeof(MOJOSHADER_effectAnnotation) * numannos;
*annotations = (MOJOSHADER_effectAnnotation *) m(siz, d);
memset(*annotations, '\0', siz);
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for (i = 0; i < numannos; i++)
{
MOJOSHADER_effectAnnotation *anno = &(*annotations)[i];
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const uint32 typeoffset = readui32(ptr, len);
const uint32 valoffset = readui32(ptr, len);
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readvalue(base, typeoffset, valoffset,
anno, objects,
m, d);
} // for
} // readannotation
static void readparameters(const uint32 numparams,
const uint8 *base,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effectParam **params,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
int i;
if (numparams == 0) return;
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uint32 siz = sizeof(MOJOSHADER_effectParam) * numparams;
*params = (MOJOSHADER_effectParam *) m(siz, d);
memset(*params, '\0', siz);
for (i = 0; i < numparams; i++)
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{
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MOJOSHADER_effectParam *param = &(*params)[i];
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const uint32 typeoffset = readui32(ptr, len);
const uint32 valoffset = readui32(ptr, len);
/*const uint32 flags =*/ readui32(ptr, len);
const uint32 numannos = readui32(ptr, len);
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param->annotation_count = numannos;
readannotations(numannos, base, ptr, len,
¶m->annotations, objects,
m, d);
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readvalue(base, typeoffset, valoffset,
¶m->value, objects,
m, d);
} // for
} // readparameters
static void readstates(const uint32 numstates,
const uint8 *base,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effectState **states,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
int i;
if (numstates == 0) return;
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const uint32 siz = sizeof (MOJOSHADER_effectState) * numstates;
*states = (MOJOSHADER_effectState *) m(siz, d);
memset(*states, '\0', siz);
for (i = 0; i < numstates; i++)
{
MOJOSHADER_effectState *state = &(*states)[i];
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const uint32 type = readui32(ptr, len);
/*const uint32 FIXME =*/ readui32(ptr, len);
const uint32 typeoffset = readui32(ptr, len);
const uint32 valoffset = readui32(ptr, len);
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state->type = (MOJOSHADER_renderStateType) type;
readvalue(base, typeoffset, valoffset,
&state->value, objects,
m, d);
} // for
} // readstates
static void readpasses(const uint32 numpasses,
const uint8 *base,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effectPass **passes,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
int i;
if (numpasses == 0) return;
const uint32 siz = sizeof (MOJOSHADER_effectPass) * numpasses;
*passes = (MOJOSHADER_effectPass *) m(siz, d);
memset(*passes, '\0', siz);
for (i = 0; i < numpasses; i++)
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{
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MOJOSHADER_effectPass *pass = &(*passes)[i];
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const uint32 passnameoffset = readui32(ptr, len);
const uint32 numannos = readui32(ptr, len);
const uint32 numstates = readui32(ptr, len);
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pass->name = readstring(base, passnameoffset, m, d);
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pass->annotation_count = numannos;
readannotations(numannos, base, ptr, len,
&pass->annotations, objects,
m, d);
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pass->state_count = numstates;
readstates(numstates, base, ptr, len,
&pass->states, objects,
m, d);
} // for
} // readpasses
static void readtechniques(const uint32 numtechniques,
const uint8 *base,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effectTechnique **techniques,
MOJOSHADER_effectObject *objects,
MOJOSHADER_malloc m,
void *d)
{
int i;
if (numtechniques == 0) return;
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566
const uint32 siz = sizeof (MOJOSHADER_effectTechnique) * numtechniques;
*techniques = (MOJOSHADER_effectTechnique *) m(siz, d);
memset(*techniques, '\0', siz);
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for (i = 0; i < numtechniques; i++)
{
MOJOSHADER_effectTechnique *technique = &(*techniques)[i];
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const uint32 nameoffset = readui32(ptr, len);
const uint32 numannos = readui32(ptr, len);
const uint32 numpasses = readui32(ptr, len);
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technique->name = readstring(base, nameoffset, m, d);
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technique->annotation_count = numannos;
readannotations(numannos, base, ptr, len,
&technique->annotations, objects,
m, d);
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technique->pass_count = numpasses;
readpasses(numpasses, base, ptr, len,
&technique->passes, objects,
m, d);
} // for
} // readtechniques
static void readsmallobjects(const uint32 numsmallobjects,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effect *effect,
const char *profile,
const MOJOSHADER_swizzle *swiz,
const unsigned int swizcount,
const MOJOSHADER_samplerMap *smap,
const unsigned int smapcount,
MOJOSHADER_malloc m,
MOJOSHADER_free f,
void *d)
{
int i, j;
if (numsmallobjects == 0) return;
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for (i = 1; i < numsmallobjects + 1; i++)
{
const uint32 index = readui32(ptr, len);
const uint32 length = readui32(ptr, len);
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MOJOSHADER_effectObject *object = &effect->objects[index];
if (object->type == MOJOSHADER_SYMTYPE_STRING)
{
if (length > 0)
{
char *str = (char *) m(length, d);
memcpy(str, *ptr, length);
object->string.string = str;
} // if
} // if
else if (object->type == MOJOSHADER_SYMTYPE_TEXTURE
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE1D
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE2D
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE3D
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626
|| object->type == MOJOSHADER_SYMTYPE_TEXTURECUBE
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER
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|| object->type == MOJOSHADER_SYMTYPE_SAMPLER1D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER2D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER3D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLERCUBE)
{
if (length > 0)
{
char *str = (char *) m(length, d);
memcpy(str, *ptr, length);
object->mapping.name = str;
} // if
} // else if
else if (object->type == MOJOSHADER_SYMTYPE_PIXELSHADER
|| object->type == MOJOSHADER_SYMTYPE_VERTEXSHADER)
{
642
643
char mainfn[32];
snprintf(mainfn, sizeof (mainfn), "ShaderFunction%u", (unsigned int) index);
644
645
object->shader.technique = -1;
object->shader.pass = -1;
646
object->shader.shader = MOJOSHADER_parse(profile, mainfn, *ptr, length,
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664
swiz, swizcount, smap, smapcount,
m, f, d);
// !!! FIXME: check for errors.
for (j = 0; j < object->shader.shader->symbol_count; j++)
if (object->shader.shader->symbols[j].register_set == MOJOSHADER_SYMREGSET_SAMPLER)
object->shader.sampler_count++;
object->shader.param_count = object->shader.shader->symbol_count;
object->shader.params = (uint32 *) m(object->shader.param_count * sizeof (uint32), d);
object->shader.samplers = (MOJOSHADER_samplerStateRegister *) m(object->shader.sampler_count * sizeof (MOJOSHADER_samplerStateRegister), d);
uint32 curSampler = 0;
for (j = 0; j < object->shader.shader->symbol_count; j++)
{
int par = findparameter(effect->params,
effect->param_count,
object->shader.shader->symbols[j].name);
object->shader.params[j] = par;
if (object->shader.shader->symbols[j].register_set == MOJOSHADER_SYMREGSET_SAMPLER)
{
665
object->shader.samplers[curSampler].sampler_name = effect->params[par].value.name;
666
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object->shader.samplers[curSampler].sampler_register = object->shader.shader->symbols[j].register_index;
object->shader.samplers[curSampler].sampler_state_count = effect->params[par].value.value_count;
object->shader.samplers[curSampler].sampler_states = effect->params[par].value.valuesSS;
curSampler++;
} // if
} // for
if (object->shader.shader->preshader)
{
object->shader.preshader_param_count = object->shader.shader->preshader->symbol_count;
object->shader.preshader_params = (uint32 *) m(object->shader.preshader_param_count * sizeof (uint32), d);
for (j = 0; j < object->shader.shader->preshader->symbol_count; j++)
{
object->shader.preshader_params[j] = findparameter(effect->params,
effect->param_count,
object->shader.shader->preshader->symbols[j].name);
} // for
} // if
} // else if
else
{
assert(0 && "Small object type unknown!");
} // else
688
689
690
691
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696
697
698
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700
701
702
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706
707
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710
711
/* Object block is always a multiple of four */
const uint32 blocklen = (length + 3) - ((length - 1) % 4);
*ptr += blocklen;
*len -= blocklen;
} // for
} // readstrings
static void readlargeobjects(const uint32 numlargeobjects,
const uint32 numsmallobjects,
const uint8 **ptr,
uint32 *len,
MOJOSHADER_effect *effect,
const char *profile,
const MOJOSHADER_swizzle *swiz,
const unsigned int swizcount,
const MOJOSHADER_samplerMap *smap,
const unsigned int smapcount,
MOJOSHADER_malloc m,
MOJOSHADER_free f,
void *d)
{
int i, j;
if (numlargeobjects == 0) return;
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
int numobjects = numsmallobjects + numlargeobjects + 1;
for (i = numsmallobjects + 1; i < numobjects; i++)
{
const uint32 technique = readui32(ptr, len);
const uint32 index = readui32(ptr, len);
/*const uint32 FIXME =*/ readui32(ptr, len);
const uint32 state = readui32(ptr, len);
const uint32 type = readui32(ptr, len);
const uint32 length = readui32(ptr, len);
uint32 objectIndex;
if (technique == -1)
objectIndex = effect->params[index].value.valuesSS[state].value.valuesI[0];
else
objectIndex = effect->techniques[technique].passes[index].states[state].value.valuesI[0];
728
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730
731
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733
734
MOJOSHADER_effectObject *object = &effect->objects[objectIndex];
if (object->type == MOJOSHADER_SYMTYPE_PIXELSHADER
|| object->type == MOJOSHADER_SYMTYPE_VERTEXSHADER)
{
object->shader.technique = technique;
object->shader.pass = index;
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
const char *emitter = profile;
if (type == 2)
{
/* This is a standalone preshader!
* It exists solely for effect passes that do not use a single
* vertex/fragment shader.
*/
object->shader.is_preshader = 1;
const uint32 start = *((uint32 *) *ptr) + 4;
const char *array = readstring(*ptr, 0, m, d);
object->shader.param_count = 1;
object->shader.params = (uint32 *) m(sizeof (uint32), d);
object->shader.params[0] = findparameter(effect->params,
effect->param_count,
array);
f((void *) array, d);
752
object->shader.preshader = MOJOSHADER_parsePreshader(*ptr + start, length,
753
754
755
756
757
758
759
760
761
762
763
764
765
m, f, d);
// !!! FIXME: check for errors.
object->shader.preshader_param_count = object->shader.preshader->symbol_count;
object->shader.preshader_params = (uint32 *) m(object->shader.preshader_param_count * sizeof (uint32), d);
for (j = 0; j < object->shader.preshader->symbol_count; j++)
{
object->shader.preshader_params[j] = findparameter(effect->params,
effect->param_count,
object->shader.preshader->symbols[j].name);
} // for
} // if
else
{
766
767
768
char mainfn[32];
snprintf(mainfn, sizeof (mainfn), "ShaderFunction%u", (unsigned int) objectIndex);
object->shader.shader = MOJOSHADER_parse(emitter, mainfn, *ptr, length,
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
swiz, swizcount, smap, smapcount,
m, f, d);
// !!! FIXME: check for errors.
for (j = 0; j < object->shader.shader->symbol_count; j++)
if (object->shader.shader->symbols[j].register_set == MOJOSHADER_SYMREGSET_SAMPLER)
object->shader.sampler_count++;
object->shader.param_count = object->shader.shader->symbol_count;
object->shader.params = (uint32 *) m(object->shader.param_count * sizeof (uint32), d);
object->shader.samplers = (MOJOSHADER_samplerStateRegister *) m(object->shader.sampler_count * sizeof (MOJOSHADER_samplerStateRegister), d);
uint32 curSampler = 0;
for (j = 0; j < object->shader.shader->symbol_count; j++)
{
int par = findparameter(effect->params,
effect->param_count,
object->shader.shader->symbols[j].name);
object->shader.params[j] = par;
if (object->shader.shader->symbols[j].register_set == MOJOSHADER_SYMREGSET_SAMPLER)
{
787
object->shader.samplers[curSampler].sampler_name = effect->params[par].value.name;
788
789
790
791
object->shader.samplers[curSampler].sampler_register = object->shader.shader->symbols[j].register_index;
object->shader.samplers[curSampler].sampler_state_count = effect->params[par].value.value_count;
object->shader.samplers[curSampler].sampler_states = effect->params[par].value.valuesSS;
curSampler++;
792
793
} // if
} // for
794
795
796
797
798
799
800
801
802
803
804
805
806
if (object->shader.shader->preshader)
{
object->shader.preshader_param_count = object->shader.shader->preshader->symbol_count;
object->shader.preshader_params = (uint32 *) m(object->shader.preshader_param_count * sizeof (uint32), d);
for (j = 0; j < object->shader.shader->preshader->symbol_count; j++)
{
object->shader.preshader_params[j] = findparameter(effect->params,
effect->param_count,
object->shader.shader->preshader->symbols[j].name);
} // for
} // if
}
} // if
807
808
809
810
811
812
else if (object->type == MOJOSHADER_SYMTYPE_TEXTURE
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE1D
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE2D
|| object->type == MOJOSHADER_SYMTYPE_TEXTURE3D
|| object->type == MOJOSHADER_SYMTYPE_TEXTURECUBE
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER
813
814
815
816
817
818
819
820
821
822
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER1D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER2D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER3D
|| object->type == MOJOSHADER_SYMTYPE_SAMPLERCUBE)
{
if (length > 0)
{
char *str = (char *) m(length, d);
memcpy(str, *ptr, length);
object->mapping.name = str;
823
} // if
824
825
826
827
828
} // else if
else if (object->type != MOJOSHADER_SYMTYPE_VOID) // FIXME: Why? -flibit
{
assert(0 && "Large object type unknown!");
} // else
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
/* Object block is always a multiple of four */
const uint32 blocklen = (length + 3) - ((length - 1) % 4);
*ptr += blocklen;
*len -= blocklen;
} // for
} // readobjects
MOJOSHADER_effect *MOJOSHADER_parseEffect(const char *profile,
const unsigned char *buf,
const unsigned int _len,
const MOJOSHADER_swizzle *swiz,
const unsigned int swizcount,
const MOJOSHADER_samplerMap *smap,
const unsigned int smapcount,
MOJOSHADER_malloc m,
MOJOSHADER_free f,
void *d)
{
const uint8 *ptr = (const uint8 *) buf;
uint32 len = (uint32) _len;
/* Supply both m and f, or neither */
if ( ((m == NULL) && (f != NULL)) || ((m != NULL) && (f == NULL)) )
return &MOJOSHADER_out_of_mem_effect;
/* Use default malloc/free if m/f were not passed */
if (m == NULL) m = MOJOSHADER_internal_malloc;
if (f == NULL) f = MOJOSHADER_internal_free;
/* malloc base effect structure */
MOJOSHADER_effect *retval = (MOJOSHADER_effect *) m(sizeof (MOJOSHADER_effect), d);
if (retval == NULL)
return &MOJOSHADER_out_of_mem_effect;
memset(retval, '\0', sizeof (*retval));
/* Store m/f/d in effect structure */
retval->malloc = m;
retval->free = f;
retval->malloc_data = d;
869
870
871
872
if (len < 8)
goto parseEffect_unexpectedEOF;
873
874
875
876
/* Read in header magic, seek to initial offset */
const uint8 *base = NULL;
uint32 header = readui32(&ptr, &len);
if (header == 0xBCF00BCF)
877
{
878
879
880
881
882
883
884
885
/* The Effect compiler provided with XNA4 adds some extra mess at the
* beginning of the file. It's useless though, so just skip it.
* -flibit
*/
const uint32 skip = readui32(&ptr, &len) - 8;
ptr += skip;
len += skip;
header = readui32(&ptr, &len);
886
} // if
887
888
889
890
891
892
893
894
895
896
897
898
899
900
if (header != 0xFEFF0901)
goto parseEffect_notAnEffectsFile;
else
{
const uint32 offset = readui32(&ptr, &len);
base = ptr;
if (offset > len)
goto parseEffect_unexpectedEOF;
ptr += offset;
len -= offset;
} // else
if (len < 16)
goto parseEffect_unexpectedEOF;
901
902
903
904
905
906
907
908
909
910
911
912
913
914
/* Parse structure counts */
const uint32 numparams = readui32(&ptr, &len);
const uint32 numtechniques = readui32(&ptr, &len);
/*const uint32 FIXME =*/ readui32(&ptr, &len);
const uint32 numobjects = readui32(&ptr, &len);
/* Alloc structures now, so object types can be stored */
retval->object_count = numobjects;
const uint32 siz = sizeof (MOJOSHADER_effectObject) * numobjects;
retval->objects = (MOJOSHADER_effectObject *) m(siz, d);
if (retval->objects == NULL)
goto parseEffect_outOfMemory;
memset(retval->objects, '\0', siz);
915
916
917
918
919
920
/* Parse effect parameters */
retval->param_count = numparams;
readparameters(numparams, base, &ptr, &len,
&retval->params, retval->objects,
m, d);
921
922
923
924
925
926
/* Parse effect techniques */
retval->technique_count = numtechniques;
readtechniques(numtechniques, base, &ptr, &len,
&retval->techniques, retval->objects,
m, d);
927
928
929
930
/* Initial effect technique/pass */
retval->current_technique = &retval->techniques[0];
retval->current_pass = -1;
931
932
933
if (len < 8)
goto parseEffect_unexpectedEOF;
934
935
936
937
/* Parse object counts */
const int numsmallobjects = readui32(&ptr, &len);
const int numlargeobjects = readui32(&ptr, &len);
938
939
940
941
942
943
944
945
946
947
948
949
/* Parse "small" object table */
readsmallobjects(numsmallobjects, &ptr, &len,
retval,
profile, swiz, swizcount, smap, smapcount,
m, f, d);
/* Parse "large" object table. */
readlargeobjects(numlargeobjects, numsmallobjects, &ptr, &len,
retval,
profile, swiz, swizcount, smap, smapcount,
m, f, d);
950
951
/* Store MojoShader profile in effect structure */
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
retval->profile = (char *) m(strlen(profile) + 1, d);
if (retval->profile == NULL)
goto parseEffect_outOfMemory;
strcpy((char *) retval->profile, profile);
return retval;
// !!! FIXME: do something with this.
parseEffect_notAnEffectsFile:
parseEffect_unexpectedEOF:
parseEffect_outOfMemory:
MOJOSHADER_freeEffect(retval);
return &MOJOSHADER_out_of_mem_effect;
} // MOJOSHADER_parseEffect
968
969
970
971
972
973
974
975
976
977
978
979
980
void freetypeinfo(MOJOSHADER_symbolTypeInfo *typeinfo,
MOJOSHADER_free f, void *d)
{
int i;
for (i = 0; i < typeinfo->member_count; i++)
{
f((void *) typeinfo->members[i].name, d);
freetypeinfo(&typeinfo->members[i].info, f, d);
} // for
f((void *) typeinfo->members, d);
} // freetypeinfo
981
982
983
984
985
void freevalue(MOJOSHADER_effectValue *value, MOJOSHADER_free f, void *d)
{
int i;
f((void *) value->name, d);
f((void *) value->semantic, d);
986
987
988
989
990
991
freetypeinfo(&value->type, f, d);
if (value->type.parameter_type == MOJOSHADER_SYMTYPE_SAMPLER
|| value->type.parameter_type == MOJOSHADER_SYMTYPE_SAMPLER1D
|| value->type.parameter_type == MOJOSHADER_SYMTYPE_SAMPLER2D
|| value->type.parameter_type == MOJOSHADER_SYMTYPE_SAMPLER3D
|| value->type.parameter_type == MOJOSHADER_SYMTYPE_SAMPLERCUBE)
992
993
994
995
996
997
for (i = 0; i < value->value_count; i++)
freevalue(&value->valuesSS[i].value, f, d);
f(value->values, d);
} // freevalue
998
999
1000
void MOJOSHADER_freeEffect(const MOJOSHADER_effect *_effect)
{
MOJOSHADER_effect *effect = (MOJOSHADER_effect *) _effect;