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arbgenerator.c
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arbgenerator.c
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#include "arbgenerator.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "arbhelper.h"
#define FAIL(str) curStatusPtr->status = ST_ERROR; if (*error_msg) free(*error_msg); \
*error_msg = strdup(str); return
void generateVariablePre(sCurStatus *curStatusPtr, int vertex, char **error_msg, sVariable *varPtr) {
(void)vertex;
if (varPtr->type == VARTYPE_CONST) {
return;
} else if (varPtr->type == VARTYPE_ADDRESS) {
// To be on the safe side, use a struct with only an 'x' component
APPEND_OUTPUT("\t_structOnlyX ", 14)
APPEND_OUTPUT2(varPtr->names[0])
APPEND_OUTPUT(";\n", 2)
return;
}
APPEND_OUTPUT("\tvec4 ", 6)
APPEND_OUTPUT2(varPtr->names[0])
int skipNL = 0;
switch (varPtr->type) {
case VARTYPE_ATTRIB:
case VARTYPE_OUTPUT:
case VARTYPE_PARAM:
APPEND_OUTPUT(" = ", 3)
APPEND_OUTPUT(varPtr->init.strings[0], varPtr->init.strings_total_len)
break;
case VARTYPE_PARAM_MULT:
skipNL = 1;
APPEND_OUTPUT("[", 1)
// if size is not defined, deduce size using varPtr->init
if (varPtr->size <= 0) {
varPtr->size = varPtr->init.strings_count;
}
char buf[11]; // Assume 32-bits array address, should never overflow...
sprintf(buf, "%d", varPtr->size);
APPEND_OUTPUT2(buf)
APPEND_OUTPUT("];\n", 3)
if (varPtr->init.strings_count <= 10) {
// Single-digit array, optimize by removing the sprintf
for (size_t i = 0; i < varPtr->init.strings_count; ++i) {
APPEND_OUTPUT("\t", 1)
APPEND_OUTPUT2(varPtr->names[0])
APPEND_OUTPUT("[", 1)
APPEND_OUTPUT(&"0123456789"[i], 1)
APPEND_OUTPUT("] = ", 4)
APPEND_OUTPUT2(varPtr->init.strings[i])
APPEND_OUTPUT(";\n", 2)
}
} else {
for (size_t i = 0; i < varPtr->init.strings_count; ++i) {
sprintf(buf, "%zd", i);
APPEND_OUTPUT("\t", 1)
APPEND_OUTPUT2(varPtr->names[0])
APPEND_OUTPUT("[", 1)
APPEND_OUTPUT2(buf)
APPEND_OUTPUT("] = ", 4)
APPEND_OUTPUT2(varPtr->init.strings[i])
APPEND_OUTPUT(";\n", 2)
}
}
break;
case VARTYPE_CONST:
case VARTYPE_TEMP:
break;
case VARTYPE_ADDRESS:
case VARTYPE_ALIAS:
case VARTYPE_TEXTURE:
case VARTYPE_TEXTARGET:
case VARTYPE_UNK:
FAIL("Invalid variable type (unintended fallthrough?)");
}
if (!skipNL) {
APPEND_OUTPUT(";\n", 2)
}
}
void generateInstruction(sCurStatus *curStatusPtr, int vertex, char **error_msg, sInstruction *instPtr) {
// Data access and output
#define SWIZ(i, s) instPtr->vars[i].swizzle[s]
#define SWIZORX(i, s) SWIZ(i, s) ? SWIZ(i, s) : (s + 1)
#define PUSH_SWIZZLE(s) \
switch (s) { \
case SWIZ_X: \
APPEND_OUTPUT("x", 1); \
break; \
case SWIZ_Y: \
APPEND_OUTPUT("y", 1); \
break; \
case SWIZ_Z: \
APPEND_OUTPUT("z", 1); \
break; \
case SWIZ_W: \
APPEND_OUTPUT("w", 1); \
break; \
case SWIZ_NONE: \
break; \
}
// Instruction assertions
#define ASSERT_COUNT(cnt) \
if (((cnt < MAX_OPERANDS) && instPtr->vars[cnt].var) || (cnt && !instPtr->vars[cnt - 1].var)) { \
FAIL("Invalid instruction (not enough/too many arguments)"); \
}
#define ASSERT_MASKDST(i) \
if ((instPtr->vars[i].var->type != VARTYPE_TEMP) && (instPtr->vars[i].var->type != VARTYPE_OUTPUT) \
&& (instPtr->vars[i].var->type != VARTYPE_CONST)) { \
FAIL("Variable is not a valid masked destination register"); \
} \
if (instPtr->vars[i].sign != 0) { \
FAIL("Variable is not a valid masked destination register"); \
} \
if (instPtr->vars[i].floatArrAddr != NULL) { \
FAIL("Variable is not a valid masked destination register"); \
} \
for (int sw = 0; (sw < 3) && (SWIZ(i, sw + 1) != SWIZ_NONE); ++sw) { \
if ((SWIZ(i, sw) >= SWIZ(i, sw + 1))) { \
FAIL("Variable is not a valid masked destination register"); \
} \
} \
if (curStatusPtr->status == ST_ERROR) { \
return; \
}
#define ASSERT_VECTSRC(i) \
if ((instPtr->vars[i].var->type != VARTYPE_TEMP) && (instPtr->vars[i].var->type != VARTYPE_ATTRIB) \
&& (instPtr->vars[i].var->type != VARTYPE_PARAM) && (instPtr->vars[i].var->type != VARTYPE_CONST) \
&& (instPtr->vars[i].var->type != VARTYPE_PARAM_MULT)) { \
FAIL("Variable is not a valid vector source register"); \
} \
if ((SWIZ(i, 1) != SWIZ_NONE) && (SWIZ(i, 3) == SWIZ_NONE)) { \
FAIL("Variable is not a valid vector source register"); \
}
#define ASSERT_SCALSRC(i) \
if ((instPtr->vars[i].var->type != VARTYPE_TEMP) && (instPtr->vars[i].var->type != VARTYPE_ATTRIB) \
&& (instPtr->vars[i].var->type != VARTYPE_PARAM) && (instPtr->vars[i].var->type != VARTYPE_CONST) \
&& (instPtr->vars[i].var->type != VARTYPE_PARAM_MULT)) { \
FAIL("Variable is not a valid vector source scalar"); \
} \
if ((SWIZ(i, 0) == SWIZ_NONE) || (SWIZ(i, 1) != SWIZ_NONE)) { \
FAIL("Variable is not a valid vector source scalar"); \
}
#define INST_VECTOR \
ASSERT_COUNT(2) \
ASSERT_MASKDST(0) \
ASSERT_VECTSRC(1)
#define INST_SCALAR \
ASSERT_COUNT(2) \
ASSERT_MASKDST(0) \
ASSERT_SCALSRC(1)
#define INST_BINSCL \
ASSERT_COUNT(3) \
ASSERT_MASKDST(0) \
ASSERT_SCALSRC(1) \
ASSERT_SCALSRC(2)
#define INST_BINVEC \
ASSERT_COUNT(3) \
ASSERT_MASKDST(0) \
ASSERT_VECTSRC(1) \
ASSERT_VECTSRC(2)
#define INST_TRIVEC \
ASSERT_COUNT(4) \
ASSERT_MASKDST(0) \
ASSERT_VECTSRC(1) \
ASSERT_VECTSRC(2) \
ASSERT_VECTSRC(3)
#define INST_SAMPLE \
ASSERT_COUNT(4) \
ASSERT_MASKDST(0) \
ASSERT_VECTSRC(1) \
if (instPtr->vars[2].var->type != VARTYPE_TEXTURE) { \
FAIL("Invalid texture variable"); \
} \
if ((instPtr->vars[3].var != curStatusPtr->tex1D) && (instPtr->vars[3].var != curStatusPtr->tex2D) \
&& (instPtr->vars[3].var != curStatusPtr->tex3D) && (instPtr->vars[3].var != curStatusPtr->texCUBE) \
/* && (instPtr->vars[3].var != curStatusPtr->texRECT) */) { \
FAIL("Invalid texture sampler target"); \
}
// Misc pushing
/* Append a DeSTination MASK (i is destination index, b is base swizzle vector or destination) */
#define PUSH_DSTMASK(i, b) \
if (((b == i) || (SWIZ(b, 0) == SWIZ_NONE)) && (SWIZ(i, 0) != SWIZ_NONE)) { \
APPEND_OUTPUT(".", 1) \
for (int sw = 0; (sw < 4) && (SWIZ(i, sw) != SWIZ_NONE); ++sw) { \
PUSH_SWIZZLE(SWIZ(i, sw)) \
} \
} else if ((b != i) && (SWIZ(b, 0) != SWIZ_NONE) && (SWIZ(i, 0) == SWIZ_NONE)) { \
APPEND_OUTPUT(".", 1) /* b is a vector */ \
if (SWIZ(b, 1) == SWIZ_NONE) { \
PUSH_SWIZZLE(SWIZ(b, 0)) \
PUSH_SWIZZLE(SWIZ(b, 0)) \
PUSH_SWIZZLE(SWIZ(b, 0)) \
PUSH_SWIZZLE(SWIZ(b, 0)) \
} else { \
PUSH_SWIZZLE(SWIZ(b, 0)) \
PUSH_SWIZZLE(SWIZ(b, 1)) \
PUSH_SWIZZLE(SWIZ(b, 2)) \
PUSH_SWIZZLE(SWIZ(b, 3)) \
} \
} else if ((b != i) && (SWIZ(b, 0) != SWIZ_NONE)) { \
APPEND_OUTPUT(".", 1) /* b is a vector */ \
if (SWIZ(b, 1) == SWIZ_NONE) { \
for (int sw = 0; (sw < 4) && (SWIZ(i, sw) != SWIZ_NONE); ++sw) { \
PUSH_SWIZZLE(SWIZ(b, 0)) \
} \
} else { \
for (int sw = 0; (sw < 4) && (SWIZ(i, sw) != SWIZ_NONE); ++sw) { \
PUSH_SWIZZLE(SWIZ(b, SWIZ(i, sw) - 1)) \
} \
} \
}
#define PUSH_DESTLEN(i) \
for (dstSwizLen = 0; (dstSwizLen < 4) && (SWIZ(i, dstSwizLen) != SWIZ_NONE); ++dstSwizLen) ; \
switch (dstSwizLen) { \
case 1: \
APPEND_OUTPUT("(", 1) \
break; \
case 2: \
APPEND_OUTPUT("vec2(", 5) \
break; \
case 3: \
APPEND_OUTPUT("vec3(", 5) \
break; \
case 0: \
case 4: \
APPEND_OUTPUT("vec4(", 5) \
break; \
default: \
FAIL("Invalid destination swizzle length"); \
}
#define PUSH_VARNAME(i) \
if (instPtr->vars[i].sign == -1) { \
APPEND_OUTPUT("-", 1) \
} \
if (instPtr->vars[i].var->type == VARTYPE_CONST) { \
APPEND_OUTPUT2(instPtr->vars[i].var->init.strings[0]) \
} else { \
APPEND_OUTPUT2(instPtr->vars[i].var->names[0]) \
} \
if (instPtr->vars[i].floatArrAddr != NULL) { \
APPEND_OUTPUT("[", 1) \
APPEND_OUTPUT2(instPtr->vars[i].floatArrAddr) \
APPEND_OUTPUT("]", 1) \
}
#define PUSH_PRE_SAT(p) \
if (instPtr->saturated) { \
APPEND_OUTPUT("clamp(", 6) \
} else if (p) { \
APPEND_OUTPUT("(", 1) \
}
#define PUSH_POSTSAT(p) \
if (instPtr->saturated) { \
APPEND_OUTPUT(", 0., 1.)", 9) \
} else if (p) { \
APPEND_OUTPUT(")", 1) \
}
// Instruction variable pushing
#define PUSH_MASKDST(i) \
PUSH_VARNAME(i) \
PUSH_DSTMASK(i, i)
#define PUSH_VECTSRC(i) \
PUSH_VARNAME(i) \
if (SWIZ(i, 0) != SWIZ_NONE) { \
APPEND_OUTPUT(".", 1) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
if (SWIZ(i, 3) == SWIZ_NONE) { \
PUSH_SWIZZLE(SWIZ(i, 0)) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
} else { \
PUSH_SWIZZLE(SWIZ(i, 1)) \
PUSH_SWIZZLE(SWIZ(i, 2)) \
PUSH_SWIZZLE(SWIZ(i, 3)) \
} \
}
/* Append a VEctor SouRCe ComponenT */
#define PUSH_VESRCCT(i, s) \
PUSH_VARNAME(i) \
APPEND_OUTPUT(".", 1) \
if (SWIZ(i, 0) == SWIZ_NONE) { \
PUSH_SWIZZLE(s + 1) \
} else { \
if (SWIZ(i, 3) == SWIZ_NONE) { \
PUSH_SWIZZLE(SWIZ(i, 0)) \
} else { \
PUSH_SWIZZLE(SWIZ(i, s)) \
} \
}
/* Append a SCALar SouRCe (i is index, d is extend/duplicate to vec4) */
#define PUSH_SCALSRC(i, d) \
PUSH_VARNAME(i) \
APPEND_OUTPUT(".", 1) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
if (d) { \
PUSH_SWIZZLE(SWIZ(i, 0)) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
PUSH_SWIZZLE(SWIZ(i, 0)) \
}
// Textures
/* Append a VECTor SaMPler */
#define PUSH_VECTSMP(i, j) \
PUSH_VECTSRC(i) \
if (instPtr->vars[j].var == curStatusPtr->tex1D) { \
APPEND_OUTPUT(".x", 2) \
} else if (instPtr->vars[j].var == curStatusPtr->tex2D) { \
APPEND_OUTPUT(".xy", 3) \
} else if (instPtr->vars[j].var == curStatusPtr->tex3D) { \
APPEND_OUTPUT(".xyz", 4) \
} else if (instPtr->vars[j].var == curStatusPtr->texCUBE) { \
APPEND_OUTPUT(".xyz", 4) \
} else { \
FAIL("Invalid variable texture target"); \
}
/* Append a texture SAMPLER */
#define PUSH_SAMPLER(i, j) \
if (instPtr->vars[i].var->type != VARTYPE_TEXTURE) { \
FAIL("Invalid variable type"); \
} \
APPEND_OUTPUT("gl_Sampler", 10) \
if (instPtr->vars[j].var == curStatusPtr->tex1D) { \
APPEND_OUTPUT("1D", 2) \
} else if (instPtr->vars[j].var == curStatusPtr->tex2D) { \
APPEND_OUTPUT("2D", 2) \
} else if (instPtr->vars[j].var == curStatusPtr->tex3D) { \
APPEND_OUTPUT("3D", 2) \
} else if (instPtr->vars[j].var == curStatusPtr->texCUBE) { \
APPEND_OUTPUT("Cube", 4) \
} else { \
FAIL("Invalid variable texture target"); \
} \
APPEND_OUTPUT("_", 1) \
APPEND_OUTPUT2(instPtr->vars[i].var->names[0])
/* Append a SAMPler FunCtioN */
#define PUSH_SAMPFCN(i) \
if (instPtr->vars[i].var == curStatusPtr->tex1D) { \
APPEND_OUTPUT("1D", 2) \
} else if (instPtr->vars[i].var == curStatusPtr->tex2D) { \
APPEND_OUTPUT("2D", 2) \
} else if (instPtr->vars[i].var == curStatusPtr->tex3D) { \
APPEND_OUTPUT("3D", 2) \
} else if (instPtr->vars[i].var == curStatusPtr->texCUBE) { \
APPEND_OUTPUT("Cube", 4) \
} else { \
FAIL("Invalid variable texture target"); \
}
// Misc
#define FINISH_INST(dst) \
if (dst) { \
PUSH_DSTMASK(0, 0) \
} \
APPEND_OUTPUT(";\n", 2) \
break;
int dstSwizLen;
switch (instPtr->type) {
case INST_ABS:
INST_VECTOR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("abs(", 4)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_ADD:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(" + ", 3)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_ARL:
ASSERT_COUNT(2)
if (!vertex) {
FAIL("Invalid instruction in fragment shader");
}
if (instPtr->vars[0].var->type != VARTYPE_ADDRESS) {
FAIL("Invalid ARL destination");
}
if ((SWIZ(0, 0) != SWIZ_X) || (SWIZ(0, 1) != SWIZ_NONE)) {
FAIL("Invalid address mask");
}
ASSERT_SCALSRC(1)
APPEND_OUTPUT("\t", 1)
PUSH_VARNAME(0)
APPEND_OUTPUT(".x = int(floor(", 15)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
FINISH_INST(0)
case INST_CMP:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_TRIVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("(", 1)
if (dstSwizLen == 0) {
PUSH_VESRCCT(1, 0)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, 0)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, 0)
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, 1)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, 1)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, 1)
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, 2)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, 2)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, 2)
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, 3)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, 3)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, 3)
}
if (dstSwizLen >= 1) {
PUSH_VESRCCT(1, SWIZ(0, 0) - 1)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, SWIZ(0, 0) - 1)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, SWIZ(0, 0) - 1)
}
if (dstSwizLen >= 2) {
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, SWIZ(0, 1) - 1)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, SWIZ(0, 1) - 1)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, SWIZ(0, 1) - 1)
}
if (dstSwizLen >= 3) {
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, SWIZ(0, 2) - 1)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, SWIZ(0, 2) - 1)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, SWIZ(0, 2) - 1)
}
if (dstSwizLen >= 4) {
APPEND_OUTPUT(", (", 3)
PUSH_VESRCCT(1, SWIZ(0, 3) - 1)
APPEND_OUTPUT(" < 0.) ? ", 9)
PUSH_VESRCCT(2, SWIZ(0, 3) - 1)
APPEND_OUTPUT(" : ", 3)
PUSH_VESRCCT(3, SWIZ(0, 3) - 1)
}
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_COS:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("cos(", 4)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_DP3:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("dot(", 4)
PUSH_VECTSRC(1)
APPEND_OUTPUT(".xyz, ", 6)
PUSH_VECTSRC(2)
APPEND_OUTPUT(".xyz))", 6)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_DP4:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("dot(", 4)
PUSH_VECTSRC(1)
APPEND_OUTPUT(", ", 2)
PUSH_VECTSRC(2)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_DPH:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("dot(vec4(", 9)
PUSH_VECTSRC(1)
APPEND_OUTPUT(".xyz, 1.), ", 11)
PUSH_VECTSRC(2)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_DST:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("vec4(1., ", 9)
PUSH_VESRCCT(1, 1)
APPEND_OUTPUT(" * ", 3)
PUSH_VESRCCT(2, 1)
APPEND_OUTPUT(", ", 2)
PUSH_VESRCCT(1, 2)
APPEND_OUTPUT(", ", 2)
PUSH_VESRCCT(2, 3)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_EX2: // "Exact"
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(1)
PUSH_DESTLEN(0)
APPEND_OUTPUT("exp2(", 5)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(1)
FINISH_INST(0)
case INST_EXP: // Approximate
if (!vertex) {
FAIL("Invalid instruction in fragment shader");
}
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = vec4(exp2(floor(", 19)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(")), fract(", 10)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("), exp2(", 8)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("), 1.)", 6)
FINISH_INST(1)
case INST_FLR:
INST_VECTOR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("floor(", 6)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_FRC:
INST_VECTOR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("fract(", 6)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_KIL:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
ASSERT_COUNT(1)
ASSERT_VECTSRC(0)
APPEND_OUTPUT("\tif ((", 6)
PUSH_VESRCCT(0, 0)
APPEND_OUTPUT(" < 0.) || (", 11)
PUSH_VESRCCT(0, 1)
APPEND_OUTPUT(" < 0.) || (", 11)
PUSH_VESRCCT(0, 2)
APPEND_OUTPUT(" < 0.) || (", 11)
PUSH_VESRCCT(0, 3)
APPEND_OUTPUT(" < 0.)) discard;\n", 17);
break;
case INST_LG2: // "Exact"
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("log2(", 5)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_LIT:
INST_VECTOR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("vec4(1.0, max(", 14)
PUSH_VESRCCT(1, 0)
APPEND_OUTPUT(", 0.0), (", 9)
PUSH_VESRCCT(1, 0)
APPEND_OUTPUT(" > 0.0) ? pow(max(", 18)
PUSH_VESRCCT(1, 1)
APPEND_OUTPUT(", 0.0), clamp(", 14)
PUSH_VESRCCT(1, 3)
APPEND_OUTPUT(", -180., 180.)) : 0.0, 1.0)", 27)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_LOG: // Approximate
if (!vertex) {
FAIL("Invalid instruction in fragment shader");
}
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = vec4(floor(log2(abs(", 23)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))), abs(", 9)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(") / exp2(floor(log2(abs(", 24)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(")))), log2(abs(", 15)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(")), 1.)", 7)
FINISH_INST(1)
case INST_LRP:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_TRIVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("mix(", 4)
PUSH_VARNAME(3)
PUSH_DSTMASK(0, 3)
APPEND_OUTPUT(", ", 2)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
APPEND_OUTPUT(", ", 2)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_MAD:
INST_TRIVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(1)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(" * ", 3)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
APPEND_OUTPUT(" + ", 3)
PUSH_VARNAME(3)
PUSH_DSTMASK(0, 3)
PUSH_POSTSAT(1)
FINISH_INST(0)
case INST_MAX:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("max(", 4)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(", ", 2)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_MIN:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("min(", 4)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(", ", 2)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_MOV:
INST_VECTOR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_MUL:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(" * ", 3)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_POW:
INST_BINSCL
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("pow(", 4)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(", ", 2)
PUSH_SCALSRC(2, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_RCP:
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("1.0 / ", 6)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_RSQ:
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("inversesqrt(", 12)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_SCS:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("vec4(cos(", 9)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("), sin(", 7)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("), 0., 0.)", 10)
PUSH_POSTSAT(0)
FINISH_INST(1)
break;
case INST_SGE:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = vec4((", 9)
PUSH_VESRCCT(1, 0)
APPEND_OUTPUT(" >= ", 4)
PUSH_VESRCCT(2, 0)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 1)
APPEND_OUTPUT(" >= ", 4)
PUSH_VESRCCT(2, 1)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 2)
APPEND_OUTPUT(" >= ", 4)
PUSH_VESRCCT(2, 2)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 3)
APPEND_OUTPUT(" >= ", 4)
PUSH_VESRCCT(2, 3)
APPEND_OUTPUT(") ? 1. : 0.)", 12)
FINISH_INST(1)
case INST_SIN:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SCALAR
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_DESTLEN(0)
APPEND_OUTPUT("sin(", 9)
PUSH_SCALSRC(1, 0)
APPEND_OUTPUT("))", 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
break;
case INST_SLT:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = vec4((", 9)
PUSH_VESRCCT(1, 0)
APPEND_OUTPUT(" < ", 3)
PUSH_VESRCCT(2, 0)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 1)
APPEND_OUTPUT(" < ", 3)
PUSH_VESRCCT(2, 1)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 2)
APPEND_OUTPUT(" < ", 3)
PUSH_VESRCCT(2, 2)
APPEND_OUTPUT(") ? 1. : 0., (", 14)
PUSH_VESRCCT(1, 3)
APPEND_OUTPUT(" < ", 3)
PUSH_VESRCCT(2, 3)
APPEND_OUTPUT(") ? 1. : 0.)", 12)
FINISH_INST(1)
case INST_SUB:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
PUSH_VARNAME(1)
PUSH_DSTMASK(0, 1)
APPEND_OUTPUT(" - ", 3)
PUSH_VARNAME(2)
PUSH_DSTMASK(0, 2)
PUSH_POSTSAT(0)
FINISH_INST(0)
case INST_SWZ:
// TODO
FAIL("ARBconv TODO: SWZ");
break;
case INST_TEX:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SAMPLE
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
// APPEND_OUTPUT("texture(", 8)
APPEND_OUTPUT("texture", 7) // Deprecated! (but texture is not official until 1.30)
PUSH_SAMPFCN(3)
APPEND_OUTPUT("(", 1)
PUSH_SAMPLER(2, 3)
APPEND_OUTPUT(", ", 2)
PUSH_VECTSMP(1, 3)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_TXB:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SAMPLE
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
// APPEND_OUTPUT("texture(", 8)
APPEND_OUTPUT("texture", 7) // Deprecated! (but texture is not official until 1.30)
PUSH_SAMPFCN(3)
APPEND_OUTPUT("(", 1)
PUSH_SAMPLER(2, 3)
APPEND_OUTPUT(", ", 2)
PUSH_VECTSMP(1, 3)
APPEND_OUTPUT(", ", 2)
PUSH_VESRCCT(1, 3)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_TXP:
if (vertex) {
FAIL("Invalid instruction in vertex shader");
}
INST_SAMPLE
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
// APPEND_OUTPUT("textureProj(", 12)
APPEND_OUTPUT("texture", 7) // Deprecated! (but texture is not official until 1.30)
PUSH_SAMPFCN(3)
APPEND_OUTPUT("Proj(", 5)
PUSH_SAMPLER(2, 3)
APPEND_OUTPUT(", ", 2)
PUSH_VECTSRC(1)
APPEND_OUTPUT(")", 1)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_XPD:
INST_BINVEC
APPEND_OUTPUT("\t", 1)
PUSH_MASKDST(0)
APPEND_OUTPUT(" = ", 3)
PUSH_PRE_SAT(0)
APPEND_OUTPUT("vec4(cross(", 11)
PUSH_VECTSRC(1)
APPEND_OUTPUT(".xyz, ", 6)
PUSH_VECTSRC(2)
APPEND_OUTPUT(".xyz), 0.)", 10)
PUSH_POSTSAT(0)
FINISH_INST(1)
case INST_UNK: