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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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#ifndef MOJOSHADER_USE_SDL_STDLIB
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#include <math.h>
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#endif /* MOJOSHADER_USE_SDL_STDLIB */
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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;
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#if 0 // FIXME: Do we need to do this or is the compiler smart enough?
// Clear preshader output registers first!
for (instit = 0; instit < preshader->instruction_count; instit++, inst++)
{
const MOJOSHADER_preshaderOperand *operand = &inst->operands[inst->operand_count - 1];
if (operand->type == MOJOSHADER_PRESHADEROPERAND_OUTPUT)
memset(&outregs[operand->index], '\0', sizeof(float) * 4);
} // for
inst = preshader->instructions;
#endif
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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!");
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return -1;
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}
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
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&& mem->info.parameter_class <= MOJOSHADER_SYMCLASS_MATRIX_COLUMNS);
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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);
551
552
pass->name = readstring(base, passnameoffset, m, d);
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557
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;
577
578
579
580
const uint32 siz = sizeof (MOJOSHADER_effectTechnique) * numtechniques;
*techniques = (MOJOSHADER_effectTechnique *) m(siz, d);
memset(*techniques, '\0', siz);
581
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584
for (i = 0; i < numtechniques; i++)
{
MOJOSHADER_effectTechnique *technique = &(*techniques)[i];
585
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587
588
const uint32 nameoffset = readui32(ptr, len);
const uint32 numannos = readui32(ptr, len);
const uint32 numpasses = readui32(ptr, len);
589
590
technique->name = readstring(base, nameoffset, m, d);
591
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593
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technique->annotation_count = numannos;
readannotations(numannos, base, ptr, len,
&technique->annotations, objects,
m, d);
596
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602
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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;
619
620
621
622
623
for (i = 1; i < numsmallobjects + 1; i++)
{
const uint32 index = readui32(ptr, len);
const uint32 length = readui32(ptr, len);
624
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626
627
628
629
630
631
632
633
634
635
636
637
638
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
639
640
|| object->type == MOJOSHADER_SYMTYPE_TEXTURECUBE
|| object->type == MOJOSHADER_SYMTYPE_SAMPLER
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
|| 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)
{
656
657
char mainfn[32];
snprintf(mainfn, sizeof (mainfn), "ShaderFunction%u", (unsigned int) index);
658
659
object->shader.technique = -1;
object->shader.pass = -1;
660
object->shader.shader = MOJOSHADER_parse(profile, mainfn, *ptr, length,
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
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)
{
679
object->shader.samplers[curSampler].sampler_name = effect->params[par].value.name;
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
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
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
/* 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;
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
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];
742
743
744
745
746
747
748
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;
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
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);
766
object->shader.preshader = MOJOSHADER_parsePreshader(*ptr + start, length,
767
768
769
770
771
772
773
774
775
776
777
778
779
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
{
780
781
782
char mainfn[32];
snprintf(mainfn, sizeof (mainfn), "ShaderFunction%u", (unsigned int) objectIndex);
object->shader.shader = MOJOSHADER_parse(emitter, mainfn, *ptr, length,
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
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)
{
801
object->shader.samplers[curSampler].sampler_name = effect->params[par].value.name;
802
803
804
805
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++;
806
807
} // if
} // for
808
809
810
811
812
813
814
815
816
817
818
819
820
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
821
822
823
824
825
826
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
827
828
829
830
831
832
833
834
835
836
|| 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;
837
} // if
838
839
840
841
842
} // else if
else if (object->type != MOJOSHADER_SYMTYPE_VOID) // FIXME: Why? -flibit
{
assert(0 && "Large object type unknown!");
} // else
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
869
870
871
872
873
874
875
876
877
878
879
880
881
882
/* 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;
883
884
885
886
if (len < 8)
goto parseEffect_unexpectedEOF;
887
888
889
890
/* Read in header magic, seek to initial offset */
const uint8 *base = NULL;
uint32 header = readui32(&ptr, &len);
if (header == 0xBCF00BCF)
891
{
892
893
894
895
896
897
898
899
/* 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);
900
} // if
901
902
903
904
905
906
907
908
909
910
911
912
913
914
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;
915
916
917
918
919
920
921
922
923
924
925
926
927
928
/* 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);
929
930
931
932
933
934
/* Parse effect parameters */
retval->param_count = numparams;
readparameters(numparams, base, &ptr, &len,
&retval->params, retval->objects,
m, d);
935
936
937
938
939
940
/* Parse effect techniques */
retval->technique_count = numtechniques;
readtechniques(numtechniques, base, &ptr, &len,
&retval->techniques, retval->objects,
m, d);
941
942
943
944
/* Initial effect technique/pass */
retval->current_technique = &retval->techniques[0];
retval->current_pass = -1;
945
946
947
if (len < 8)
goto parseEffect_unexpectedEOF;
948
949
950
951
/* Parse object counts */
const int numsmallobjects = readui32(&ptr, &len);
const int numlargeobjects = readui32(&ptr, &len);
952
953
954
955
956
957
958
959
960
961
962
963
/* 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);
964
965
/* Store MojoShader profile in effect structure */
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
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
982
983
984
985
986
987
988
989
990
991
992
993
994
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
995
996
997
998
999
void freevalue(MOJOSHADER_effectValue *value, MOJOSHADER_free f, void *d)
{
int i;
f((void *) value->name, d);
f((void *) value->semantic, d);
1000
freetypeinfo(&value->type, f, d);