src/Shader/PixelProgram.cpp

   1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //    http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 #include "PixelProgram.hpp"
  16 #include "Primitive.hpp"
  17 #include "Renderer.hpp"
  18 #include "SamplerCore.hpp"
  19
  20 namespace sw
  21 {
  22         extern bool postBlendSRGB;
  23         extern bool booleanFaceRegister;
  24         extern bool halfIntegerCoordinates;     // Pixel centers are not at integer coordinates
  25         extern bool fullPixelPositionRegister;
  26
  27         void PixelProgram::setBuiltins(Int &x, Int &y, Float4(&z)[4], Float4 &w)
  28         {
  29                 if(shader->getVersion() >= 0x0300)
  30                 {
  31                         if(shader->vPosDeclared)
  32                         {
  33                                 if(!halfIntegerCoordinates)
  34                                 {
  35                                         vPos.x = Float4(Float(x)) + Float4(0, 1, 0, 1);
  36                                         vPos.y = Float4(Float(y)) + Float4(0, 0, 1, 1);
  37                                 }
  38                                 else
  39                                 {
  40                                         vPos.x = Float4(Float(x)) + Float4(0.5f, 1.5f, 0.5f, 1.5f);
  41                                         vPos.y = Float4(Float(y)) + Float4(0.5f, 0.5f, 1.5f, 1.5f);
  42                                 }
  43
  44                                 if(fullPixelPositionRegister)
  45                                 {
  46                                         vPos.z = z[0]; // FIXME: Centroid?
  47                                         vPos.w = w;    // FIXME: Centroid?
  48                                 }
  49                         }
  50
  51                         if(shader->vFaceDeclared)
  52                         {
  53                                 Float4 area = *Pointer<Float>(primitive + OFFSET(Primitive, area));
  54                                 Float4 face = booleanFaceRegister ? Float4(As<Float4>(CmpNLT(area, Float4(0.0f)))) : area;
  55
  56                                 vFace.x = face;
  57                                 vFace.y = face;
  58                                 vFace.z = face;
  59                                 vFace.w = face;
  60                         }
  61                 }
  62         }
  63
  64         void PixelProgram::applyShader(Int cMask[4])
  65         {
  66                 enableIndex = 0;
  67                 stackIndex = 0;
  68
  69                 if(shader->containsLeaveInstruction())
  70                 {
  71                         enableLeave = Int4(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
  72                 }
  73
  74                 for(int i = 0; i < RENDERTARGETS; i++)
  75                 {
  76                         if(state.targetFormat[i] != FORMAT_NULL)
  77                         {
  78                                 oC[i] = Vector4f(0.0f, 0.0f, 0.0f, 0.0f);
  79                         }
  80                 }
  81
  82                 // Create all call site return blocks up front
  83                 for(size_t i = 0; i < shader->getLength(); i++)
  84                 {
  85                         const Shader::Instruction *instruction = shader->getInstruction(i);
  86                         Shader::Opcode opcode = instruction->opcode;
  87
  88                         if(opcode == Shader::OPCODE_CALL || opcode == Shader::OPCODE_CALLNZ)
  89                         {
  90                                 const Dst &dst = instruction->dst;
  91
  92                                 ASSERT(callRetBlock[dst.label].size() == dst.callSite);
  93                                 callRetBlock[dst.label].push_back(Nucleus::createBasicBlock());
  94                         }
  95                 }
  96
  97                 bool broadcastColor0 = true;
  98
  99                 for(size_t i = 0; i < shader->getLength(); i++)
 100                 {
 101                         const Shader::Instruction *instruction = shader->getInstruction(i);
 102                         Shader::Opcode opcode = instruction->opcode;
 103
 104                         if(opcode == Shader::OPCODE_DCL || opcode == Shader::OPCODE_DEF || opcode == Shader::OPCODE_DEFI || opcode == Shader::OPCODE_DEFB)
 105                         {
 106                                 continue;
 107                         }
 108
 109                         const Dst &dst = instruction->dst;
 110                         const Src &src0 = instruction->src[0];
 111                         const Src &src1 = instruction->src[1];
 112                         const Src &src2 = instruction->src[2];
 113                         const Src &src3 = instruction->src[3];
 114                         const Src &src4 = instruction->src[4];
 115
 116                         bool predicate = instruction->predicate;
 117                         Control control = instruction->control;
 118                         bool pp = dst.partialPrecision;
 119                         bool project = instruction->project;
 120                         bool bias = instruction->bias;
 121
 122                         Vector4f d;
 123                         Vector4f s0;
 124                         Vector4f s1;
 125                         Vector4f s2;
 126                         Vector4f s3;
 127                         Vector4f s4;
 128
 129                         if(opcode == Shader::OPCODE_TEXKILL)   // Takes destination as input
 130                         {
 131                                 if(dst.type == Shader::PARAMETER_TEXTURE)
 132                                 {
 133                                         d.x = v[2 + dst.index].x;
 134                                         d.y = v[2 + dst.index].y;
 135                                         d.z = v[2 + dst.index].z;
 136                                         d.w = v[2 + dst.index].w;
 137                                 }
 138                                 else
 139                                 {
 140                                         d = r[dst.index];
 141                                 }
 142                         }
 143
 144                         if(src0.type != Shader::PARAMETER_VOID) s0 = fetchRegister(src0);
 145                         if(src1.type != Shader::PARAMETER_VOID) s1 = fetchRegister(src1);
 146                         if(src2.type != Shader::PARAMETER_VOID) s2 = fetchRegister(src2);
 147                         if(src3.type != Shader::PARAMETER_VOID) s3 = fetchRegister(src3);
 148                         if(src4.type != Shader::PARAMETER_VOID) s4 = fetchRegister(src4);
 149
 150                         switch(opcode)
 151                         {
 152                         case Shader::OPCODE_PS_2_0:                                                    break;
 153                         case Shader::OPCODE_PS_2_x:                                                    break;
 154                         case Shader::OPCODE_PS_3_0:                                                    break;
 155                         case Shader::OPCODE_DEF:                                                       break;
 156                         case Shader::OPCODE_DCL:                                                       break;
 157                         case Shader::OPCODE_NOP:                                                       break;
 158                         case Shader::OPCODE_MOV:        mov(d, s0);                                    break;
 159                         case Shader::OPCODE_NEG:        neg(d, s0);                                    break;
 160                         case Shader::OPCODE_INEG:       ineg(d, s0);                                   break;
 161                         case Shader::OPCODE_F2B:        f2b(d, s0);                                    break;
 162                         case Shader::OPCODE_B2F:        b2f(d, s0);                                    break;
 163                         case Shader::OPCODE_F2I:        f2i(d, s0);                                    break;
 164                         case Shader::OPCODE_I2F:        i2f(d, s0);                                    break;
 165                         case Shader::OPCODE_F2U:        f2u(d, s0);                                    break;
 166                         case Shader::OPCODE_U2F:        u2f(d, s0);                                    break;
 167                         case Shader::OPCODE_I2B:        i2b(d, s0);                                    break;
 168                         case Shader::OPCODE_B2I:        b2i(d, s0);                                    break;
 169                         case Shader::OPCODE_ADD:        add(d, s0, s1);                                break;
 170                         case Shader::OPCODE_IADD:       iadd(d, s0, s1);                               break;
 171                         case Shader::OPCODE_SUB:        sub(d, s0, s1);                                break;
 172                         case Shader::OPCODE_ISUB:       isub(d, s0, s1);                               break;
 173                         case Shader::OPCODE_MUL:        mul(d, s0, s1);                                break;
 174                         case Shader::OPCODE_IMUL:       imul(d, s0, s1);                               break;
 175                         case Shader::OPCODE_MAD:        mad(d, s0, s1, s2);                            break;
 176                         case Shader::OPCODE_IMAD:       imad(d, s0, s1, s2);                           break;
 177                         case Shader::OPCODE_DP1:        dp1(d, s0, s1);                                break;
 178                         case Shader::OPCODE_DP2:        dp2(d, s0, s1);                                break;
 179                         case Shader::OPCODE_DP2ADD:     dp2add(d, s0, s1, s2);                         break;
 180                         case Shader::OPCODE_DP3:        dp3(d, s0, s1);                                break;
 181                         case Shader::OPCODE_DP4:        dp4(d, s0, s1);                                break;
 182                         case Shader::OPCODE_DET2:       det2(d, s0, s1);                               break;
 183                         case Shader::OPCODE_DET3:       det3(d, s0, s1, s2);                           break;
 184                         case Shader::OPCODE_DET4:       det4(d, s0, s1, s2, s3);                       break;
 185                         case Shader::OPCODE_CMP0:       cmp0(d, s0, s1, s2);                           break;
 186                         case Shader::OPCODE_ICMP:       icmp(d, s0, s1, control);                      break;
 187                         case Shader::OPCODE_UCMP:       ucmp(d, s0, s1, control);                      break;
 188                         case Shader::OPCODE_SELECT:     select(d, s0, s1, s2);                         break;
 189                         case Shader::OPCODE_EXTRACT:    extract(d.x, s0, s1.x);                        break;
 190                         case Shader::OPCODE_INSERT:     insert(d, s0, s1.x, s2.x);                     break;
 191                         case Shader::OPCODE_FRC:        frc(d, s0);                                    break;
 192                         case Shader::OPCODE_TRUNC:      trunc(d, s0);                                  break;
 193                         case Shader::OPCODE_FLOOR:      floor(d, s0);                                  break;
 194                         case Shader::OPCODE_ROUND:      round(d, s0);                                  break;
 195                         case Shader::OPCODE_ROUNDEVEN:  roundEven(d, s0);                              break;
 196                         case Shader::OPCODE_CEIL:       ceil(d, s0);                                   break;
 197                         case Shader::OPCODE_EXP2X:      exp2x(d, s0, pp);                              break;
 198                         case Shader::OPCODE_EXP2:       exp2(d, s0, pp);                               break;
 199                         case Shader::OPCODE_LOG2X:      log2x(d, s0, pp);                              break;
 200                         case Shader::OPCODE_LOG2:       log2(d, s0, pp);                               break;
 201                         case Shader::OPCODE_EXP:        exp(d, s0, pp);                                break;
 202                         case Shader::OPCODE_LOG:        log(d, s0, pp);                                break;
 203                         case Shader::OPCODE_RCPX:       rcpx(d, s0, pp);                               break;
 204                         case Shader::OPCODE_DIV:        div(d, s0, s1);                                break;
 205                         case Shader::OPCODE_IDIV:       idiv(d, s0, s1);                               break;
 206                         case Shader::OPCODE_UDIV:       udiv(d, s0, s1);                               break;
 207                         case Shader::OPCODE_MOD:        mod(d, s0, s1);                                break;
 208                         case Shader::OPCODE_IMOD:       imod(d, s0, s1);                               break;
 209                         case Shader::OPCODE_UMOD:       umod(d, s0, s1);                               break;
 210                         case Shader::OPCODE_SHL:        shl(d, s0, s1);                                break;
 211                         case Shader::OPCODE_ISHR:       ishr(d, s0, s1);                               break;
 212                         case Shader::OPCODE_USHR:       ushr(d, s0, s1);                               break;
 213                         case Shader::OPCODE_RSQX:       rsqx(d, s0, pp);                               break;
 214                         case Shader::OPCODE_SQRT:       sqrt(d, s0, pp);                               break;
 215                         case Shader::OPCODE_RSQ:        rsq(d, s0, pp);                                break;
 216                         case Shader::OPCODE_LEN2:       len2(d.x, s0, pp);                             break;
 217                         case Shader::OPCODE_LEN3:       len3(d.x, s0, pp);                             break;
 218                         case Shader::OPCODE_LEN4:       len4(d.x, s0, pp);                             break;
 219                         case Shader::OPCODE_DIST1:      dist1(d.x, s0, s1, pp);                        break;
 220                         case Shader::OPCODE_DIST2:      dist2(d.x, s0, s1, pp);                        break;
 221                         case Shader::OPCODE_DIST3:      dist3(d.x, s0, s1, pp);                        break;
 222                         case Shader::OPCODE_DIST4:      dist4(d.x, s0, s1, pp);                        break;
 223                         case Shader::OPCODE_MIN:        min(d, s0, s1);                                break;
 224                         case Shader::OPCODE_IMIN:       imin(d, s0, s1);                               break;
 225                         case Shader::OPCODE_UMIN:       umin(d, s0, s1);                               break;
 226                         case Shader::OPCODE_MAX:        max(d, s0, s1);                                break;
 227                         case Shader::OPCODE_IMAX:       imax(d, s0, s1);                               break;
 228                         case Shader::OPCODE_UMAX:       umax(d, s0, s1);                               break;
 229                         case Shader::OPCODE_LRP:        lrp(d, s0, s1, s2);                            break;
 230                         case Shader::OPCODE_STEP:       step(d, s0, s1);                               break;
 231                         case Shader::OPCODE_SMOOTH:     smooth(d, s0, s1, s2);                         break;
 232                         case Shader::OPCODE_FLOATBITSTOINT:
 233                         case Shader::OPCODE_FLOATBITSTOUINT:
 234                         case Shader::OPCODE_INTBITSTOFLOAT:
 235                         case Shader::OPCODE_UINTBITSTOFLOAT: d = s0;                                   break;
 236                         case Shader::OPCODE_PACKSNORM2x16:   packSnorm2x16(d, s0);                     break;
 237                         case Shader::OPCODE_PACKUNORM2x16:   packUnorm2x16(d, s0);                     break;
 238                         case Shader::OPCODE_PACKHALF2x16:    packHalf2x16(d, s0);                      break;
 239                         case Shader::OPCODE_UNPACKSNORM2x16: unpackSnorm2x16(d, s0);                   break;
 240                         case Shader::OPCODE_UNPACKUNORM2x16: unpackUnorm2x16(d, s0);                   break;
 241                         case Shader::OPCODE_UNPACKHALF2x16:  unpackHalf2x16(d, s0);                    break;
 242                         case Shader::OPCODE_POWX:       powx(d, s0, s1, pp);                           break;
 243                         case Shader::OPCODE_POW:        pow(d, s0, s1, pp);                            break;
 244                         case Shader::OPCODE_SGN:        sgn(d, s0);                                    break;
 245                         case Shader::OPCODE_ISGN:       isgn(d, s0);                                   break;
 246                         case Shader::OPCODE_CRS:        crs(d, s0, s1);                                break;
 247                         case Shader::OPCODE_FORWARD1:   forward1(d, s0, s1, s2);                       break;
 248                         case Shader::OPCODE_FORWARD2:   forward2(d, s0, s1, s2);                       break;
 249                         case Shader::OPCODE_FORWARD3:   forward3(d, s0, s1, s2);                       break;
 250                         case Shader::OPCODE_FORWARD4:   forward4(d, s0, s1, s2);                       break;
 251                         case Shader::OPCODE_REFLECT1:   reflect1(d, s0, s1);                           break;
 252                         case Shader::OPCODE_REFLECT2:   reflect2(d, s0, s1);                           break;
 253                         case Shader::OPCODE_REFLECT3:   reflect3(d, s0, s1);                           break;
 254                         case Shader::OPCODE_REFLECT4:   reflect4(d, s0, s1);                           break;
 255                         case Shader::OPCODE_REFRACT1:   refract1(d, s0, s1, s2.x);                     break;
 256                         case Shader::OPCODE_REFRACT2:   refract2(d, s0, s1, s2.x);                     break;
 257                         case Shader::OPCODE_REFRACT3:   refract3(d, s0, s1, s2.x);                     break;
 258                         case Shader::OPCODE_REFRACT4:   refract4(d, s0, s1, s2.x);                     break;
 259                         case Shader::OPCODE_NRM2:       nrm2(d, s0, pp);                               break;
 260                         case Shader::OPCODE_NRM3:       nrm3(d, s0, pp);                               break;
 261                         case Shader::OPCODE_NRM4:       nrm4(d, s0, pp);                               break;
 262                         case Shader::OPCODE_ABS:        abs(d, s0);                                    break;
 263                         case Shader::OPCODE_IABS:       iabs(d, s0);                                   break;
 264                         case Shader::OPCODE_SINCOS:     sincos(d, s0, pp);                             break;
 265                         case Shader::OPCODE_COS:        cos(d, s0, pp);                                break;
 266                         case Shader::OPCODE_SIN:        sin(d, s0, pp);                                break;
 267                         case Shader::OPCODE_TAN:        tan(d, s0, pp);                                break;
 268                         case Shader::OPCODE_ACOS:       acos(d, s0, pp);                               break;
 269                         case Shader::OPCODE_ASIN:       asin(d, s0, pp);                               break;
 270                         case Shader::OPCODE_ATAN:       atan(d, s0, pp);                               break;
 271                         case Shader::OPCODE_ATAN2:      atan2(d, s0, s1, pp);                          break;
 272                         case Shader::OPCODE_COSH:       cosh(d, s0, pp);                               break;
 273                         case Shader::OPCODE_SINH:       sinh(d, s0, pp);                               break;
 274                         case Shader::OPCODE_TANH:       tanh(d, s0, pp);                               break;
 275                         case Shader::OPCODE_ACOSH:      acosh(d, s0, pp);                              break;
 276                         case Shader::OPCODE_ASINH:      asinh(d, s0, pp);                              break;
 277                         case Shader::OPCODE_ATANH:      atanh(d, s0, pp);                              break;
 278                         case Shader::OPCODE_M4X4:       M4X4(d, s0, src1);                             break;
 279                         case Shader::OPCODE_M4X3:       M4X3(d, s0, src1);                             break;
 280                         case Shader::OPCODE_M3X4:       M3X4(d, s0, src1);                             break;
 281                         case Shader::OPCODE_M3X3:       M3X3(d, s0, src1);                             break;
 282                         case Shader::OPCODE_M3X2:       M3X2(d, s0, src1);                             break;
 283                         case Shader::OPCODE_TEX:        TEXLD(d, s0, src1, project, bias);             break;
 284                         case Shader::OPCODE_TEXLDD:     TEXLDD(d, s0, src1, s2, s3);                   break;
 285                         case Shader::OPCODE_TEXLDL:     TEXLDL(d, s0, src1);                           break;
 286                         case Shader::OPCODE_TEXSIZE:    TEXSIZE(d, s0.x, src1);                        break;
 287                         case Shader::OPCODE_TEXKILL:    TEXKILL(cMask, d, dst.mask);                   break;
 288                         case Shader::OPCODE_TEXOFFSET:  TEXOFFSET(d, s0, src1, s2, bias);              break;
 289                         case Shader::OPCODE_TEXLDLOFFSET: TEXLDL(d, s0, src1, s2, bias);               break;
 290                         case Shader::OPCODE_TEXELFETCH: TEXELFETCH(d, s0, src1);                       break;
 291                         case Shader::OPCODE_TEXELFETCHOFFSET: TEXELFETCH(d, s0, src1, s2);             break;
 292                         case Shader::OPCODE_TEXGRAD:    TEXGRAD(d, s0, src1, s2, s3);                  break;
 293                         case Shader::OPCODE_TEXGRADOFFSET: TEXGRAD(d, s0, src1, s2, s3, s4);           break;
 294                         case Shader::OPCODE_DISCARD:    DISCARD(cMask, instruction);                   break;
 295                         case Shader::OPCODE_DFDX:       DFDX(d, s0);                                   break;
 296                         case Shader::OPCODE_DFDY:       DFDY(d, s0);                                   break;
 297                         case Shader::OPCODE_FWIDTH:     FWIDTH(d, s0);                                 break;
 298                         case Shader::OPCODE_BREAK:      BREAK();                                       break;
 299                         case Shader::OPCODE_BREAKC:     BREAKC(s0, s1, control);                       break;
 300                         case Shader::OPCODE_BREAKP:     BREAKP(src0);                                  break;
 301                         case Shader::OPCODE_CONTINUE:   CONTINUE();                                    break;
 302                         case Shader::OPCODE_TEST:       TEST();                                        break;
 303                         case Shader::OPCODE_CALL:       CALL(dst.label, dst.callSite);                 break;
 304                         case Shader::OPCODE_CALLNZ:     CALLNZ(dst.label, dst.callSite, src0);         break;
 305                         case Shader::OPCODE_ELSE:       ELSE();                                        break;
 306                         case Shader::OPCODE_ENDIF:      ENDIF();                                       break;
 307                         case Shader::OPCODE_ENDLOOP:    ENDLOOP();                                     break;
 308                         case Shader::OPCODE_ENDREP:     ENDREP();                                      break;
 309                         case Shader::OPCODE_ENDWHILE:   ENDWHILE();                                    break;
 310                         case Shader::OPCODE_ENDSWITCH:  ENDSWITCH();                                   break;
 311                         case Shader::OPCODE_IF:         IF(src0);                                      break;
 312                         case Shader::OPCODE_IFC:        IFC(s0, s1, control);                          break;
 313                         case Shader::OPCODE_LABEL:      LABEL(dst.index);                              break;
 314                         case Shader::OPCODE_LOOP:       LOOP(src1);                                    break;
 315                         case Shader::OPCODE_REP:        REP(src0);                                     break;
 316                         case Shader::OPCODE_WHILE:      WHILE(src0);                                   break;
 317                         case Shader::OPCODE_SWITCH:     SWITCH();                                      break;
 318                         case Shader::OPCODE_RET:        RET();                                         break;
 319                         case Shader::OPCODE_LEAVE:      LEAVE();                                       break;
 320                         case Shader::OPCODE_CMP:        cmp(d, s0, s1, control);                       break;
 321                         case Shader::OPCODE_ALL:        all(d.x, s0);                                  break;
 322                         case Shader::OPCODE_ANY:        any(d.x, s0);                                  break;
 323                         case Shader::OPCODE_NOT:        not(d, s0);                                    break;
 324                         case Shader::OPCODE_OR:         or(d, s0, s1);                                 break;
 325                         case Shader::OPCODE_XOR:        xor(d, s0, s1);                                break;
 326                         case Shader::OPCODE_AND:        and(d, s0, s1);                                break;
 327                         case Shader::OPCODE_EQ:         equal(d, s0, s1);                              break;
 328                         case Shader::OPCODE_NE:         notEqual(d, s0, s1);                           break;
 329                         case Shader::OPCODE_END:                                                       break;
 330                         default:
 331                                 ASSERT(false);
 332                         }
 333
 334                         if(dst.type != Shader::PARAMETER_VOID && dst.type != Shader::PARAMETER_LABEL && opcode != Shader::OPCODE_TEXKILL && opcode != Shader::OPCODE_NOP)
 335                         {
 336                                 if(dst.integer)
 337                                 {
 338                                         switch(opcode)
 339                                         {
 340                                         case Shader::OPCODE_DIV:
 341                                                 if(dst.x) d.x = Trunc(d.x);
 342                                                 if(dst.y) d.y = Trunc(d.y);
 343                                                 if(dst.z) d.z = Trunc(d.z);
 344                                                 if(dst.w) d.w = Trunc(d.w);
 345                                                 break;
 346                                         default:
 347                                                 break;   // No truncation to integer required when arguments are integer
 348                                         }
 349                                 }
 350
 351                                 if(dst.saturate)
 352                                 {
 353                                         if(dst.x) d.x = Max(d.x, Float4(0.0f));
 354                                         if(dst.y) d.y = Max(d.y, Float4(0.0f));
 355                                         if(dst.z) d.z = Max(d.z, Float4(0.0f));
 356                                         if(dst.w) d.w = Max(d.w, Float4(0.0f));
 357
 358                                         if(dst.x) d.x = Min(d.x, Float4(1.0f));
 359                                         if(dst.y) d.y = Min(d.y, Float4(1.0f));
 360                                         if(dst.z) d.z = Min(d.z, Float4(1.0f));
 361                                         if(dst.w) d.w = Min(d.w, Float4(1.0f));
 362                                 }
 363
 364                                 if(instruction->isPredicated())
 365                                 {
 366                                         Vector4f pDst;   // FIXME: Rename
 367
 368                                         switch(dst.type)
 369                                         {
 370                                         case Shader::PARAMETER_TEMP:
 371                                                 if(dst.rel.type == Shader::PARAMETER_VOID)
 372                                                 {
 373                                                         if(dst.x) pDst.x = r[dst.index].x;
 374                                                         if(dst.y) pDst.y = r[dst.index].y;
 375                                                         if(dst.z) pDst.z = r[dst.index].z;
 376                                                         if(dst.w) pDst.w = r[dst.index].w;
 377                                                 }
 378                                                 else
 379                                                 {
 380                                                         Int a = relativeAddress(dst);
 381
 382                                                         if(dst.x) pDst.x = r[dst.index + a].x;
 383                                                         if(dst.y) pDst.y = r[dst.index + a].y;
 384                                                         if(dst.z) pDst.z = r[dst.index + a].z;
 385                                                         if(dst.w) pDst.w = r[dst.index + a].w;
 386                                                 }
 387                                                 break;
 388                                         case Shader::PARAMETER_COLOROUT:
 389                                                 if(dst.rel.type == Shader::PARAMETER_VOID)
 390                                                 {
 391                                                         if(dst.x) pDst.x = oC[dst.index].x;
 392                                                         if(dst.y) pDst.y = oC[dst.index].y;
 393                                                         if(dst.z) pDst.z = oC[dst.index].z;
 394                                                         if(dst.w) pDst.w = oC[dst.index].w;
 395                                                 }
 396                                                 else
 397                                                 {
 398                                                         Int a = relativeAddress(dst) + dst.index;
 399
 400                                                         if(dst.x) pDst.x = oC[a].x;
 401                                                         if(dst.y) pDst.y = oC[a].y;
 402                                                         if(dst.z) pDst.z = oC[a].z;
 403                                                         if(dst.w) pDst.w = oC[a].w;
 404                                                 }
 405                                                 break;
 406                                         case Shader::PARAMETER_PREDICATE:
 407                                                 if(dst.x) pDst.x = p0.x;
 408                                                 if(dst.y) pDst.y = p0.y;
 409                                                 if(dst.z) pDst.z = p0.z;
 410                                                 if(dst.w) pDst.w = p0.w;
 411                                                 break;
 412                                         case Shader::PARAMETER_DEPTHOUT:
 413                                                 pDst.x = oDepth;
 414                                                 break;
 415                                         default:
 416                                                 ASSERT(false);
 417                                         }
 418
 419                                         Int4 enable = enableMask(instruction);
 420
 421                                         Int4 xEnable = enable;
 422                                         Int4 yEnable = enable;
 423                                         Int4 zEnable = enable;
 424                                         Int4 wEnable = enable;
 425
 426                                         if(predicate)
 427                                         {
 428                                                 unsigned char pSwizzle = instruction->predicateSwizzle;
 429
 430                                                 Float4 xPredicate = p0[(pSwizzle >> 0) & 0x03];
 431                                                 Float4 yPredicate = p0[(pSwizzle >> 2) & 0x03];
 432                                                 Float4 zPredicate = p0[(pSwizzle >> 4) & 0x03];
 433                                                 Float4 wPredicate = p0[(pSwizzle >> 6) & 0x03];
 434
 435                                                 if(!instruction->predicateNot)
 436                                                 {
 437                                                         if(dst.x) xEnable = xEnable & As<Int4>(xPredicate);
 438                                                         if(dst.y) yEnable = yEnable & As<Int4>(yPredicate);
 439                                                         if(dst.z) zEnable = zEnable & As<Int4>(zPredicate);
 440                                                         if(dst.w) wEnable = wEnable & As<Int4>(wPredicate);
 441                                                 }
 442                                                 else
 443                                                 {
 444                                                         if(dst.x) xEnable = xEnable & ~As<Int4>(xPredicate);
 445                                                         if(dst.y) yEnable = yEnable & ~As<Int4>(yPredicate);
 446                                                         if(dst.z) zEnable = zEnable & ~As<Int4>(zPredicate);
 447                                                         if(dst.w) wEnable = wEnable & ~As<Int4>(wPredicate);
 448                                                 }
 449                                         }
 450
 451                                         if(dst.x) d.x = As<Float4>(As<Int4>(d.x) & xEnable);
 452                                         if(dst.y) d.y = As<Float4>(As<Int4>(d.y) & yEnable);
 453                                         if(dst.z) d.z = As<Float4>(As<Int4>(d.z) & zEnable);
 454                                         if(dst.w) d.w = As<Float4>(As<Int4>(d.w) & wEnable);
 455
 456                                         if(dst.x) d.x = As<Float4>(As<Int4>(d.x) | (As<Int4>(pDst.x) & ~xEnable));
 457                                         if(dst.y) d.y = As<Float4>(As<Int4>(d.y) | (As<Int4>(pDst.y) & ~yEnable));
 458                                         if(dst.z) d.z = As<Float4>(As<Int4>(d.z) | (As<Int4>(pDst.z) & ~zEnable));
 459                                         if(dst.w) d.w = As<Float4>(As<Int4>(d.w) | (As<Int4>(pDst.w) & ~wEnable));
 460                                 }
 461
 462                                 switch(dst.type)
 463                                 {
 464                                 case Shader::PARAMETER_TEMP:
 465                                         if(dst.rel.type == Shader::PARAMETER_VOID)
 466                                         {
 467                                                 if(dst.x) r[dst.index].x = d.x;
 468                                                 if(dst.y) r[dst.index].y = d.y;
 469                                                 if(dst.z) r[dst.index].z = d.z;
 470                                                 if(dst.w) r[dst.index].w = d.w;
 471                                         }
 472                                         else
 473                                         {
 474                                                 Int a = relativeAddress(dst);
 475
 476                                                 if(dst.x) r[dst.index + a].x = d.x;
 477                                                 if(dst.y) r[dst.index + a].y = d.y;
 478                                                 if(dst.z) r[dst.index + a].z = d.z;
 479                                                 if(dst.w) r[dst.index + a].w = d.w;
 480                                         }
 481                                         break;
 482                                 case Shader::PARAMETER_COLOROUT:
 483                                         if(dst.rel.type == Shader::PARAMETER_VOID)
 484                                         {
 485                                                 broadcastColor0 = (dst.index == 0) && broadcastColor0;
 486
 487                                                 if(dst.x) { oC[dst.index].x = d.x; }
 488                                                 if(dst.y) { oC[dst.index].y = d.y; }
 489                                                 if(dst.z) { oC[dst.index].z = d.z; }
 490                                                 if(dst.w) { oC[dst.index].w = d.w; }
 491                                         }
 492                                         else
 493                                         {
 494                                                 broadcastColor0 = false;
 495                                                 Int a = relativeAddress(dst) + dst.index;
 496
 497                                                 if(dst.x) { oC[a].x = d.x; }
 498                                                 if(dst.y) { oC[a].y = d.y; }
 499                                                 if(dst.z) { oC[a].z = d.z; }
 500                                                 if(dst.w) { oC[a].w = d.w; }
 501                                         }
 502                                         break;
 503                                 case Shader::PARAMETER_PREDICATE:
 504                                         if(dst.x) p0.x = d.x;
 505                                         if(dst.y) p0.y = d.y;
 506                                         if(dst.z) p0.z = d.z;
 507                                         if(dst.w) p0.w = d.w;
 508                                         break;
 509                                 case Shader::PARAMETER_DEPTHOUT:
 510                                         oDepth = d.x;
 511                                         break;
 512                                 default:
 513                                         ASSERT(false);
 514                                 }
 515                         }
 516                 }
 517
 518                 if(currentLabel != -1)
 519                 {
 520                         Nucleus::setInsertBlock(returnBlock);
 521                 }
 522
 523                 if(broadcastColor0)
 524                 {
 525                         for(int i = 0; i < RENDERTARGETS; i++)
 526                         {
 527                                 c[i] = oC[0];
 528                         }
 529                 }
 530                 else
 531                 {
 532                         for(int i = 0; i < RENDERTARGETS; i++)
 533                         {
 534                                 c[i] = oC[i];
 535                         }
 536                 }
 537         }
 538
 539         Bool PixelProgram::alphaTest(Int cMask[4])
 540         {
 541                 clampColor(c);
 542
 543                 if(!state.alphaTestActive())
 544                 {
 545                         return true;
 546                 }
 547
 548                 Int aMask;
 549
 550                 if(state.transparencyAntialiasing == TRANSPARENCY_NONE)
 551                 {
 552                         Short4 alpha = RoundShort4(c[0].w * Float4(0x1000));
 553
 554                         PixelRoutine::alphaTest(aMask, alpha);
 555
 556                         for(unsigned int q = 0; q < state.multiSample; q++)
 557                         {
 558                                 cMask[q] &= aMask;
 559                         }
 560                 }
 561                 else if(state.transparencyAntialiasing == TRANSPARENCY_ALPHA_TO_COVERAGE)
 562                 {
 563                         alphaToCoverage(cMask, c[0].w);
 564                 }
 565                 else ASSERT(false);
 566
 567                 Int pass = cMask[0];
 568
 569                 for(unsigned int q = 1; q < state.multiSample; q++)
 570                 {
 571                         pass = pass | cMask[q];
 572                 }
 573
 574                 return pass != 0x0;
 575         }
 576
 577         void PixelProgram::rasterOperation(Float4 &fog, Pointer<Byte> cBuffer[4], Int &x, Int sMask[4], Int zMask[4], Int cMask[4])
 578         {
 579                 for(int index = 0; index < RENDERTARGETS; index++)
 580                 {
 581                         if(!state.colorWriteActive(index))
 582                         {
 583                                 continue;
 584                         }
 585
 586                         if(!postBlendSRGB && state.writeSRGB && !isSRGB(index))
 587                         {
 588                                 c[index].x = linearToSRGB(c[index].x);
 589                                 c[index].y = linearToSRGB(c[index].y);
 590                                 c[index].z = linearToSRGB(c[index].z);
 591                         }
 592
 593                         if(index == 0)
 594                         {
 595                                 fogBlend(c[index], fog);
 596                         }
 597
 598                         switch(state.targetFormat[index])
 599                         {
 600                         case FORMAT_R5G6B5:
 601                         case FORMAT_X8R8G8B8:
 602                         case FORMAT_X8B8G8R8:
 603                         case FORMAT_A8R8G8B8:
 604                         case FORMAT_A8B8G8R8:
 605                         case FORMAT_SRGB8_X8:
 606                         case FORMAT_SRGB8_A8:
 607                         case FORMAT_R8:
 608                         case FORMAT_A8:
 609                         case FORMAT_G16R16:
 610                         case FORMAT_A16B16G16R16:
 611                                 for(unsigned int q = 0; q < state.multiSample; q++)
 612                                 {
 613                                         Pointer<Byte> buffer = cBuffer[index] + q * *Pointer<Int>(data + OFFSET(DrawData, colorSliceB[index]));
 614                                         Vector4s color;
 615
 616                                         if(state.targetFormat[index] == FORMAT_R5G6B5)
 617                                         {
 618                                                 color.x = UShort4(c[index].x * Float4(0xFBFF), false);
 619                                                 color.y = UShort4(c[index].y * Float4(0xFDFF), false);
 620                                                 color.z = UShort4(c[index].z * Float4(0xFBFF), false);
 621                                                 color.w = UShort4(c[index].w * Float4(0xFFFF), false);
 622                                         }
 623                                         else
 624                                         {
 625                                                 color.x = convertFixed16(c[index].x, false);
 626                                                 color.y = convertFixed16(c[index].y, false);
 627                                                 color.z = convertFixed16(c[index].z, false);
 628                                                 color.w = convertFixed16(c[index].w, false);
 629                                         }
 630
 631                                         if(state.multiSampleMask & (1 << q))
 632                                         {
 633                                                 alphaBlend(index, buffer, color, x);
 634                                                 logicOperation(index, buffer, color, x);
 635                                                 writeColor(index, buffer, x, color, sMask[q], zMask[q], cMask[q]);
 636                                         }
 637                                 }
 638                                 break;
 639                         case FORMAT_R32F:
 640                         case FORMAT_G32R32F:
 641                         case FORMAT_X32B32G32R32F:
 642                         case FORMAT_A32B32G32R32F:
 643                         case FORMAT_R32I:
 644                         case FORMAT_G32R32I:
 645                         case FORMAT_A32B32G32R32I:
 646                         case FORMAT_R32UI:
 647                         case FORMAT_G32R32UI:
 648                         case FORMAT_A32B32G32R32UI:
 649                         case FORMAT_R16I:
 650                         case FORMAT_G16R16I:
 651                         case FORMAT_A16B16G16R16I:
 652                         case FORMAT_R16UI:
 653                         case FORMAT_G16R16UI:
 654                         case FORMAT_A16B16G16R16UI:
 655                         case FORMAT_R8I:
 656                         case FORMAT_G8R8I:
 657                         case FORMAT_A8B8G8R8I:
 658                         case FORMAT_R8UI:
 659                         case FORMAT_G8R8UI:
 660                         case FORMAT_A8B8G8R8UI:
 661                                 for(unsigned int q = 0; q < state.multiSample; q++)
 662                                 {
 663                                         Pointer<Byte> buffer = cBuffer[index] + q * *Pointer<Int>(data + OFFSET(DrawData, colorSliceB[index]));
 664                                         Vector4f color = c[index];
 665
 666                                         if(state.multiSampleMask & (1 << q))
 667                                         {
 668                                                 alphaBlend(index, buffer, color, x);
 669                                                 writeColor(index, buffer, x, color, sMask[q], zMask[q], cMask[q]);
 670                                         }
 671                                 }
 672                                 break;
 673                         default:
 674                                 ASSERT(false);
 675                         }
 676                 }
 677         }
 678
 679         void PixelProgram::sampleTexture(Vector4f &c, const Src &sampler, Vector4f &uvwq, Vector4f &dsx, Vector4f &dsy, Vector4f &offset, SamplerFunction function)
 680         {
 681                 Vector4f tmp;
 682
 683                 if(sampler.type == Shader::PARAMETER_SAMPLER && sampler.rel.type == Shader::PARAMETER_VOID)
 684                 {
 685                         sampleTexture(tmp, sampler.index, uvwq, dsx, dsy, offset, function);
 686                 }
 687                 else
 688                 {
 689                         Int index = As<Int>(Float(fetchRegister(sampler).x.x));
 690
 691                         for(int i = 0; i < TEXTURE_IMAGE_UNITS; i++)
 692                         {
 693                                 if(shader->usesSampler(i))
 694                                 {
 695                                         If(index == i)
 696                                         {
 697                                                 sampleTexture(tmp, i, uvwq, dsx, dsy, offset, function);
 698                                                 // FIXME: When the sampler states are the same, we could use one sampler and just index the texture
 699                                         }
 700                                 }
 701                         }
 702                 }
 703
 704                 c.x = tmp[(sampler.swizzle >> 0) & 0x3];
 705                 c.y = tmp[(sampler.swizzle >> 2) & 0x3];
 706                 c.z = tmp[(sampler.swizzle >> 4) & 0x3];
 707                 c.w = tmp[(sampler.swizzle >> 6) & 0x3];
 708         }
 709
 710         void PixelProgram::sampleTexture(Vector4f &c, int samplerIndex, Vector4f &uvwq, Vector4f &dsx, Vector4f &dsy, Vector4f &offset, SamplerFunction function)
 711         {
 712                 #if PERF_PROFILE
 713                         Long texTime = Ticks();
 714                 #endif
 715
 716                 Pointer<Byte> texture = data + OFFSET(DrawData, mipmap) + samplerIndex * sizeof(Texture);
 717                 sampler[samplerIndex]->sampleTexture(texture, c, uvwq.x, uvwq.y, uvwq.z, uvwq.w, dsx, dsy, offset, function);
 718
 719                 #if PERF_PROFILE
 720                         cycles[PERF_TEX] += Ticks() - texTime;
 721                 #endif
 722         }
 723
 724         void PixelProgram::clampColor(Vector4f oC[RENDERTARGETS])
 725         {
 726                 for(int index = 0; index < RENDERTARGETS; index++)
 727                 {
 728                         if(!state.colorWriteActive(index) && !(index == 0 && state.alphaTestActive()))
 729                         {
 730                                 continue;
 731                         }
 732
 733                         switch(state.targetFormat[index])
 734                         {
 735                         case FORMAT_NULL:
 736                                 break;
 737                         case FORMAT_R5G6B5:
 738                         case FORMAT_A8R8G8B8:
 739                         case FORMAT_A8B8G8R8:
 740                         case FORMAT_X8R8G8B8:
 741                         case FORMAT_X8B8G8R8:
 742                         case FORMAT_SRGB8_X8:
 743                         case FORMAT_SRGB8_A8:
 744                         case FORMAT_R8:
 745                         case FORMAT_A8:
 746                         case FORMAT_G16R16:
 747                         case FORMAT_A16B16G16R16:
 748                                 oC[index].x = Max(oC[index].x, Float4(0.0f)); oC[index].x = Min(oC[index].x, Float4(1.0f));
 749                                 oC[index].y = Max(oC[index].y, Float4(0.0f)); oC[index].y = Min(oC[index].y, Float4(1.0f));
 750                                 oC[index].z = Max(oC[index].z, Float4(0.0f)); oC[index].z = Min(oC[index].z, Float4(1.0f));
 751                                 oC[index].w = Max(oC[index].w, Float4(0.0f)); oC[index].w = Min(oC[index].w, Float4(1.0f));
 752                                 break;
 753                         case FORMAT_R32F:
 754                         case FORMAT_G32R32F:
 755                         case FORMAT_X32B32G32R32F:
 756                         case FORMAT_A32B32G32R32F:
 757                         case FORMAT_R32I:
 758                         case FORMAT_G32R32I:
 759                         case FORMAT_A32B32G32R32I:
 760                         case FORMAT_R32UI:
 761                         case FORMAT_G32R32UI:
 762                         case FORMAT_A32B32G32R32UI:
 763                                 break;
 764                         default:
 765                                 ASSERT(false);
 766                         }
 767                 }
 768         }
 769
 770         Int4 PixelProgram::enableMask(const Shader::Instruction *instruction)
 771         {
 772                 Int4 enable = instruction->analysisBranch ? Int4(enableStack[enableIndex]) : Int4(0xFFFFFFFF);
 773
 774                 if(!whileTest)
 775                 {
 776                         if(shader->containsBreakInstruction() && instruction->analysisBreak)
 777                         {
 778                                 enable &= enableBreak;
 779                         }
 780
 781                         if(shader->containsContinueInstruction() && instruction->analysisContinue)
 782                         {
 783                                 enable &= enableContinue;
 784                         }
 785
 786                         if(shader->containsLeaveInstruction() && instruction->analysisLeave)
 787                         {
 788                                 enable &= enableLeave;
 789                         }
 790                 }
 791
 792                 return enable;
 793         }
 794
 795         Vector4f PixelProgram::fetchRegister(const Src &src, unsigned int offset)
 796         {
 797                 Vector4f reg;
 798                 unsigned int i = src.index + offset;
 799
 800                 switch(src.type)
 801                 {
 802                 case Shader::PARAMETER_TEMP:
 803                         if(src.rel.type == Shader::PARAMETER_VOID)
 804                         {
 805                                 reg = r[i];
 806                         }
 807                         else
 808                         {
 809                                 Int a = relativeAddress(src, src.bufferIndex);
 810
 811                                 reg = r[i + a];
 812                         }
 813                         break;
 814                 case Shader::PARAMETER_INPUT:
 815                         {
 816                                 if(src.rel.type == Shader::PARAMETER_VOID)   // Not relative
 817                                 {
 818                                         reg = v[i];
 819                                 }
 820                                 else
 821                                 {
 822                                         Int a = relativeAddress(src, src.bufferIndex);
 823
 824                                         reg = v[i + a];
 825                                 }
 826                         }
 827                         break;
 828                 case Shader::PARAMETER_CONST:
 829                         reg = readConstant(src, offset);
 830                         break;
 831                 case Shader::PARAMETER_TEXTURE:
 832                         reg = v[2 + i];
 833                         break;
 834                 case Shader::PARAMETER_MISCTYPE:
 835                         if(src.index == 0) reg = vPos;
 836                         if(src.index == 1) reg = vFace;
 837                         break;
 838                 case Shader::PARAMETER_SAMPLER:
 839                         if(src.rel.type == Shader::PARAMETER_VOID)
 840                         {
 841                                 reg.x = As<Float4>(Int4(i));
 842                         }
 843                         else if(src.rel.type == Shader::PARAMETER_TEMP)
 844                         {
 845                                 reg.x = As<Float4>(Int4(i) + As<Int4>(r[src.rel.index].x));
 846                         }
 847                         return reg;
 848                 case Shader::PARAMETER_PREDICATE:   return reg; // Dummy
 849                 case Shader::PARAMETER_VOID:        return reg; // Dummy
 850                 case Shader::PARAMETER_FLOAT4LITERAL:
 851                         reg.x = Float4(src.value[0]);
 852                         reg.y = Float4(src.value[1]);
 853                         reg.z = Float4(src.value[2]);
 854                         reg.w = Float4(src.value[3]);
 855                         break;
 856                 case Shader::PARAMETER_CONSTINT:    return reg; // Dummy
 857                 case Shader::PARAMETER_CONSTBOOL:   return reg; // Dummy
 858                 case Shader::PARAMETER_LOOP:        return reg; // Dummy
 859                 case Shader::PARAMETER_COLOROUT:
 860                         if(src.rel.type == Shader::PARAMETER_VOID)   // Not relative
 861                         {
 862                                 reg = oC[i];
 863                         }
 864                         else
 865                         {
 866                                 Int a = relativeAddress(src, src.bufferIndex);
 867
 868                                 reg = oC[i + a];
 869                         }
 870                         break;
 871                 case Shader::PARAMETER_DEPTHOUT:
 872                         reg.x = oDepth;
 873                         break;
 874                 default:
 875                         ASSERT(false);
 876                 }
 877
 878                 const Float4 &x = reg[(src.swizzle >> 0) & 0x3];
 879                 const Float4 &y = reg[(src.swizzle >> 2) & 0x3];
 880                 const Float4 &z = reg[(src.swizzle >> 4) & 0x3];
 881                 const Float4 &w = reg[(src.swizzle >> 6) & 0x3];
 882
 883                 Vector4f mod;
 884
 885                 switch(src.modifier)
 886                 {
 887                 case Shader::MODIFIER_NONE:
 888                         mod.x = x;
 889                         mod.y = y;
 890                         mod.z = z;
 891                         mod.w = w;
 892                         break;
 893                 case Shader::MODIFIER_NEGATE:
 894                         mod.x = -x;
 895                         mod.y = -y;
 896                         mod.z = -z;
 897                         mod.w = -w;
 898                         break;
 899                 case Shader::MODIFIER_ABS:
 900                         mod.x = Abs(x);
 901                         mod.y = Abs(y);
 902                         mod.z = Abs(z);
 903                         mod.w = Abs(w);
 904                         break;
 905                 case Shader::MODIFIER_ABS_NEGATE:
 906                         mod.x = -Abs(x);
 907                         mod.y = -Abs(y);
 908                         mod.z = -Abs(z);
 909                         mod.w = -Abs(w);
 910                         break;
 911                 case Shader::MODIFIER_NOT:
 912                         mod.x = As<Float4>(As<Int4>(x) ^ Int4(0xFFFFFFFF));
 913                         mod.y = As<Float4>(As<Int4>(y) ^ Int4(0xFFFFFFFF));
 914                         mod.z = As<Float4>(As<Int4>(z) ^ Int4(0xFFFFFFFF));
 915                         mod.w = As<Float4>(As<Int4>(w) ^ Int4(0xFFFFFFFF));
 916                         break;
 917                 default:
 918                         ASSERT(false);
 919                 }
 920
 921                 return mod;
 922         }
 923
 924         RValue<Pointer<Byte>> PixelProgram::uniformAddress(int bufferIndex, unsigned int index)
 925         {
 926                 if(bufferIndex == -1)
 927                 {
 928                         return data + OFFSET(DrawData, ps.c[index]);
 929                 }
 930                 else
 931                 {
 932                         return *Pointer<Pointer<Byte>>(data + OFFSET(DrawData, ps.u[bufferIndex])) + index;
 933                 }
 934         }
 935
 936         RValue<Pointer<Byte>> PixelProgram::uniformAddress(int bufferIndex, unsigned int index, Int& offset)
 937         {
 938                 return uniformAddress(bufferIndex, index) + offset * sizeof(float4);
 939         }
 940
 941         Vector4f PixelProgram::readConstant(const Src &src, unsigned int offset)
 942         {
 943                 Vector4f c;
 944                 unsigned int i = src.index + offset;
 945
 946                 if(src.rel.type == Shader::PARAMETER_VOID)   // Not relative
 947                 {
 948                         c.x = c.y = c.z = c.w = *Pointer<Float4>(uniformAddress(src.bufferIndex, i));
 949
 950                         c.x = c.x.xxxx;
 951                         c.y = c.y.yyyy;
 952                         c.z = c.z.zzzz;
 953                         c.w = c.w.wwww;
 954
 955                         if(shader->containsDefineInstruction())   // Constant may be known at compile time
 956                         {
 957                                 for(size_t j = 0; j < shader->getLength(); j++)
 958                                 {
 959                                         const Shader::Instruction &instruction = *shader->getInstruction(j);
 960
 961                                         if(instruction.opcode == Shader::OPCODE_DEF)
 962                                         {
 963                                                 if(instruction.dst.index == i)
 964                                                 {
 965                                                         c.x = Float4(instruction.src[0].value[0]);
 966                                                         c.y = Float4(instruction.src[0].value[1]);
 967                                                         c.z = Float4(instruction.src[0].value[2]);
 968                                                         c.w = Float4(instruction.src[0].value[3]);
 969
 970                                                         break;
 971                                                 }
 972                                         }
 973                                 }
 974                         }
 975                 }
 976                 else if(src.rel.type == Shader::PARAMETER_LOOP)
 977                 {
 978                         Int loopCounter = aL[loopDepth];
 979
 980                         c.x = c.y = c.z = c.w = *Pointer<Float4>(uniformAddress(src.bufferIndex, i, loopCounter));
 981
 982                         c.x = c.x.xxxx;
 983                         c.y = c.y.yyyy;
 984                         c.z = c.z.zzzz;
 985                         c.w = c.w.wwww;
 986                 }
 987                 else
 988                 {
 989                         Int a = relativeAddress(src, src.bufferIndex);
 990
 991                         c.x = c.y = c.z = c.w = *Pointer<Float4>(uniformAddress(src.bufferIndex, i, a));
 992
 993                         c.x = c.x.xxxx;
 994                         c.y = c.y.yyyy;
 995                         c.z = c.z.zzzz;
 996                         c.w = c.w.wwww;
 997                 }
 998
 999                 return c;
1000         }
1001
1002         Int PixelProgram::relativeAddress(const Shader::Parameter &var, int bufferIndex)
1003         {
1004                 ASSERT(var.rel.deterministic);
1005
1006                 if(var.rel.type == Shader::PARAMETER_TEMP)
1007                 {
1008                         return As<Int>(Extract(r[var.rel.index].x, 0)) * var.rel.scale;
1009                 }
1010                 else if(var.rel.type == Shader::PARAMETER_INPUT)
1011                 {
1012                         return As<Int>(Extract(v[var.rel.index].x, 0)) * var.rel.scale;
1013                 }
1014                 else if(var.rel.type == Shader::PARAMETER_OUTPUT)
1015                 {
1016                         return As<Int>(Extract(oC[var.rel.index].x, 0)) * var.rel.scale;
1017                 }
1018                 else if(var.rel.type == Shader::PARAMETER_CONST)
1019                 {
1020                         return *Pointer<Int>(uniformAddress(bufferIndex, var.rel.index)) * var.rel.scale;
1021                 }
1022                 else if(var.rel.type == Shader::PARAMETER_LOOP)
1023                 {
1024                         return aL[loopDepth];
1025                 }
1026                 else ASSERT(false);
1027
1028                 return 0;
1029         }
1030
1031         Float4 PixelProgram::linearToSRGB(const Float4 &x)   // Approximates x^(1.0/2.2)
1032         {
1033                 Float4 sqrtx = Rcp_pp(RcpSqrt_pp(x));
1034                 Float4 sRGB = sqrtx * Float4(1.14f) - x * Float4(0.14f);
1035
1036                 return Min(Max(sRGB, Float4(0.0f)), Float4(1.0f));
1037         }
1038
1039         void PixelProgram::M3X2(Vector4f &dst, Vector4f &src0, const Src &src1)
1040         {
1041                 Vector4f row0 = fetchRegister(src1, 0);
1042                 Vector4f row1 = fetchRegister(src1, 1);
1043
1044                 dst.x = dot3(src0, row0);
1045                 dst.y = dot3(src0, row1);
1046         }
1047
1048         void PixelProgram::M3X3(Vector4f &dst, Vector4f &src0, const Src &src1)
1049         {
1050                 Vector4f row0 = fetchRegister(src1, 0);
1051                 Vector4f row1 = fetchRegister(src1, 1);
1052                 Vector4f row2 = fetchRegister(src1, 2);
1053
1054                 dst.x = dot3(src0, row0);
1055                 dst.y = dot3(src0, row1);
1056                 dst.z = dot3(src0, row2);
1057         }
1058
1059         void PixelProgram::M3X4(Vector4f &dst, Vector4f &src0, const Src &src1)
1060         {
1061                 Vector4f row0 = fetchRegister(src1, 0);
1062                 Vector4f row1 = fetchRegister(src1, 1);
1063                 Vector4f row2 = fetchRegister(src1, 2);
1064                 Vector4f row3 = fetchRegister(src1, 3);
1065
1066                 dst.x = dot3(src0, row0);
1067                 dst.y = dot3(src0, row1);
1068                 dst.z = dot3(src0, row2);
1069                 dst.w = dot3(src0, row3);
1070         }
1071
1072         void PixelProgram::M4X3(Vector4f &dst, Vector4f &src0, const Src &src1)
1073         {
1074                 Vector4f row0 = fetchRegister(src1, 0);
1075                 Vector4f row1 = fetchRegister(src1, 1);
1076                 Vector4f row2 = fetchRegister(src1, 2);
1077
1078                 dst.x = dot4(src0, row0);
1079                 dst.y = dot4(src0, row1);
1080                 dst.z = dot4(src0, row2);
1081         }
1082
1083         void PixelProgram::M4X4(Vector4f &dst, Vector4f &src0, const Src &src1)
1084         {
1085                 Vector4f row0 = fetchRegister(src1, 0);
1086                 Vector4f row1 = fetchRegister(src1, 1);
1087                 Vector4f row2 = fetchRegister(src1, 2);
1088                 Vector4f row3 = fetchRegister(src1, 3);
1089
1090                 dst.x = dot4(src0, row0);
1091                 dst.y = dot4(src0, row1);
1092                 dst.z = dot4(src0, row2);
1093                 dst.w = dot4(src0, row3);
1094         }
1095
1096         void PixelProgram::TEXLD(Vector4f &dst, Vector4f &src0, const Src &src1, bool project, bool bias)
1097         {
1098                 if(project)
1099                 {
1100                         Vector4f proj;
1101                         Float4 rw = reciprocal(src0.w);
1102                         proj.x = src0.x * rw;
1103                         proj.y = src0.y * rw;
1104                         proj.z = src0.z * rw;
1105
1106                         sampleTexture(dst, src1, proj, src0, src0, src0, Implicit);
1107                 }
1108                 else
1109                 {
1110                         sampleTexture(dst, src1, src0, src0, src0, src0, bias ? Bias : Implicit);
1111                 }
1112         }
1113
1114         void PixelProgram::TEXOFFSET(Vector4f &dst, Vector4f &src0, const Src &src1, Vector4f &src2, bool bias)
1115         {
1116                 sampleTexture(dst, src1, src0, src0, src0, src2, {bias ? Bias : Implicit, Offset});
1117         }
1118
1119         void PixelProgram::TEXLDL(Vector4f &dst, Vector4f &src0, const Src &src1, Vector4f &offset, bool bias)
1120         {
1121                 sampleTexture(dst, src1, src0, src0, src0, offset, {Lod, Offset});
1122         }
1123
1124         void PixelProgram::TEXELFETCH(Vector4f &dst, Vector4f &src0, const Src& src1)
1125         {
1126                 sampleTexture(dst, src1, src0, src0, src0, src0, Fetch);
1127         }
1128
1129         void PixelProgram::TEXELFETCH(Vector4f &dst, Vector4f &src0, const Src& src1, Vector4f &offset)
1130         {
1131                 sampleTexture(dst, src1, src0, src0, src0, offset, {Fetch, Offset});
1132         }
1133
1134         void PixelProgram::TEXGRAD(Vector4f &dst, Vector4f &src0, const Src& src1, Vector4f &src2, Vector4f &src3)
1135         {
1136                 sampleTexture(dst, src1, src0, src2, src3, src0, Grad);
1137         }
1138
1139         void PixelProgram::TEXGRAD(Vector4f &dst, Vector4f &src0, const Src& src1, Vector4f &src2, Vector4f &src3, Vector4f &offset)
1140         {
1141                 sampleTexture(dst, src1, src0, src2, src3, offset, {Grad, Offset});
1142         }
1143
1144         void PixelProgram::TEXLDD(Vector4f &dst, Vector4f &src0, const Src &src1, Vector4f &src2, Vector4f &src3)
1145         {
1146                 sampleTexture(dst, src1, src0, src2, src3, src0, Grad);
1147         }
1148
1149         void PixelProgram::TEXLDL(Vector4f &dst, Vector4f &src0, const Src &src1)
1150         {
1151                 sampleTexture(dst, src1, src0, src0, src0, src0, Lod);
1152         }
1153
1154         void PixelProgram::TEXSIZE(Vector4f &dst, Float4 &lod, const Src &src1)
1155         {
1156                 Pointer<Byte> texture = data + OFFSET(DrawData, mipmap) + src1.index * sizeof(Texture);
1157                 sampler[src1.index]->textureSize(texture, dst, lod);
1158         }
1159
1160         void PixelProgram::TEXKILL(Int cMask[4], Vector4f &src, unsigned char mask)
1161         {
1162                 Int kill = -1;
1163
1164                 if(mask & 0x1) kill &= SignMask(CmpNLT(src.x, Float4(0.0f)));
1165                 if(mask & 0x2) kill &= SignMask(CmpNLT(src.y, Float4(0.0f)));
1166                 if(mask & 0x4) kill &= SignMask(CmpNLT(src.z, Float4(0.0f)));
1167                 if(mask & 0x8) kill &= SignMask(CmpNLT(src.w, Float4(0.0f)));
1168
1169                 // FIXME: Dynamic branching affects TEXKILL?
1170                 //      if(shader->containsDynamicBranching())
1171                 //      {
1172                 //              kill = ~SignMask(enableMask());
1173                 //      }
1174
1175                 for(unsigned int q = 0; q < state.multiSample; q++)
1176                 {
1177                         cMask[q] &= kill;
1178                 }
1179
1180                 // FIXME: Branch to end of shader if all killed?
1181         }
1182
1183         void PixelProgram::DISCARD(Int cMask[4], const Shader::Instruction *instruction)
1184         {
1185                 Int kill = 0;
1186
1187                 if(shader->containsDynamicBranching())
1188                 {
1189                         kill = ~SignMask(enableMask(instruction));
1190                 }
1191
1192                 for(unsigned int q = 0; q < state.multiSample; q++)
1193                 {
1194                         cMask[q] &= kill;
1195                 }
1196
1197                 // FIXME: Branch to end of shader if all killed?
1198         }
1199
1200         void PixelProgram::DFDX(Vector4f &dst, Vector4f &src)
1201         {
1202                 dst.x = src.x.yyww - src.x.xxzz;
1203                 dst.y = src.y.yyww - src.y.xxzz;
1204                 dst.z = src.z.yyww - src.z.xxzz;
1205                 dst.w = src.w.yyww - src.w.xxzz;
1206         }
1207
1208         void PixelProgram::DFDY(Vector4f &dst, Vector4f &src)
1209         {
1210                 dst.x = src.x.zwzw - src.x.xyxy;
1211                 dst.y = src.y.zwzw - src.y.xyxy;
1212                 dst.z = src.z.zwzw - src.z.xyxy;
1213                 dst.w = src.w.zwzw - src.w.xyxy;
1214         }
1215
1216         void PixelProgram::FWIDTH(Vector4f &dst, Vector4f &src)
1217         {
1218                 // abs(dFdx(src)) + abs(dFdy(src));
1219                 dst.x = Abs(src.x.yyww - src.x.xxzz) + Abs(src.x.zwzw - src.x.xyxy);
1220                 dst.y = Abs(src.y.yyww - src.y.xxzz) + Abs(src.y.zwzw - src.y.xyxy);
1221                 dst.z = Abs(src.z.yyww - src.z.xxzz) + Abs(src.z.zwzw - src.z.xyxy);
1222                 dst.w = Abs(src.w.yyww - src.w.xxzz) + Abs(src.w.zwzw - src.w.xyxy);
1223         }
1224
1225         void PixelProgram::BREAK()
1226         {
1227                 llvm::BasicBlock *deadBlock = Nucleus::createBasicBlock();
1228                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth - 1];
1229
1230                 if(breakDepth == 0)
1231                 {
1232                         enableIndex = enableIndex - breakDepth;
1233                         Nucleus::createBr(endBlock);
1234                 }
1235                 else
1236                 {
1237                         enableBreak = enableBreak & ~enableStack[enableIndex];
1238                         Bool allBreak = SignMask(enableBreak) == 0x0;
1239
1240                         enableIndex = enableIndex - breakDepth;
1241                         branch(allBreak, endBlock, deadBlock);
1242                 }
1243
1244                 Nucleus::setInsertBlock(deadBlock);
1245                 enableIndex = enableIndex + breakDepth;
1246         }
1247
1248         void PixelProgram::BREAKC(Vector4f &src0, Vector4f &src1, Control control)
1249         {
1250                 Int4 condition;
1251
1252                 switch(control)
1253                 {
1254                 case Shader::CONTROL_GT: condition = CmpNLE(src0.x, src1.x); break;
1255                 case Shader::CONTROL_EQ: condition = CmpEQ(src0.x, src1.x);  break;
1256                 case Shader::CONTROL_GE: condition = CmpNLT(src0.x, src1.x); break;
1257                 case Shader::CONTROL_LT: condition = CmpLT(src0.x, src1.x);  break;
1258                 case Shader::CONTROL_NE: condition = CmpNEQ(src0.x, src1.x); break;
1259                 case Shader::CONTROL_LE: condition = CmpLE(src0.x, src1.x);  break;
1260                 default:
1261                         ASSERT(false);
1262                 }
1263
1264                 BREAK(condition);
1265         }
1266
1267         void PixelProgram::BREAKP(const Src &predicateRegister)   // FIXME: Factor out parts common with BREAKC
1268         {
1269                 Int4 condition = As<Int4>(p0[predicateRegister.swizzle & 0x3]);
1270
1271                 if(predicateRegister.modifier == Shader::MODIFIER_NOT)
1272                 {
1273                         condition = ~condition;
1274                 }
1275
1276                 BREAK(condition);
1277         }
1278
1279         void PixelProgram::BREAK(Int4 &condition)
1280         {
1281                 condition &= enableStack[enableIndex];
1282
1283                 llvm::BasicBlock *continueBlock = Nucleus::createBasicBlock();
1284                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth - 1];
1285
1286                 enableBreak = enableBreak & ~condition;
1287                 Bool allBreak = SignMask(enableBreak) == 0x0;
1288
1289                 enableIndex = enableIndex - breakDepth;
1290                 branch(allBreak, endBlock, continueBlock);
1291
1292                 Nucleus::setInsertBlock(continueBlock);
1293                 enableIndex = enableIndex + breakDepth;
1294         }
1295
1296         void PixelProgram::CONTINUE()
1297         {
1298                 enableContinue = enableContinue & ~enableStack[enableIndex];
1299         }
1300
1301         void PixelProgram::TEST()
1302         {
1303                 whileTest = true;
1304         }
1305
1306         void PixelProgram::CALL(int labelIndex, int callSiteIndex)
1307         {
1308                 if(!labelBlock[labelIndex])
1309                 {
1310                         labelBlock[labelIndex] = Nucleus::createBasicBlock();
1311                 }
1312
1313                 if(callRetBlock[labelIndex].size() > 1)
1314                 {
1315                         callStack[stackIndex++] = UInt(callSiteIndex);
1316                 }
1317
1318                 Int4 restoreLeave = enableLeave;
1319
1320                 Nucleus::createBr(labelBlock[labelIndex]);
1321                 Nucleus::setInsertBlock(callRetBlock[labelIndex][callSiteIndex]);
1322
1323                 enableLeave = restoreLeave;
1324         }
1325
1326         void PixelProgram::CALLNZ(int labelIndex, int callSiteIndex, const Src &src)
1327         {
1328                 if(src.type == Shader::PARAMETER_CONSTBOOL)
1329                 {
1330                         CALLNZb(labelIndex, callSiteIndex, src);
1331                 }
1332                 else if(src.type == Shader::PARAMETER_PREDICATE)
1333                 {
1334                         CALLNZp(labelIndex, callSiteIndex, src);
1335                 }
1336                 else ASSERT(false);
1337         }
1338
1339         void PixelProgram::CALLNZb(int labelIndex, int callSiteIndex, const Src &boolRegister)
1340         {
1341                 Bool condition = (*Pointer<Byte>(data + OFFSET(DrawData, ps.b[boolRegister.index])) != Byte(0));   // FIXME
1342
1343                 if(boolRegister.modifier == Shader::MODIFIER_NOT)
1344                 {
1345                         condition = !condition;
1346                 }
1347
1348                 if(!labelBlock[labelIndex])
1349                 {
1350                         labelBlock[labelIndex] = Nucleus::createBasicBlock();
1351                 }
1352
1353                 if(callRetBlock[labelIndex].size() > 1)
1354                 {
1355                         callStack[stackIndex++] = UInt(callSiteIndex);
1356                 }
1357
1358                 Int4 restoreLeave = enableLeave;
1359
1360                 branch(condition, labelBlock[labelIndex], callRetBlock[labelIndex][callSiteIndex]);
1361                 Nucleus::setInsertBlock(callRetBlock[labelIndex][callSiteIndex]);
1362
1363                 enableLeave = restoreLeave;
1364         }
1365
1366         void PixelProgram::CALLNZp(int labelIndex, int callSiteIndex, const Src &predicateRegister)
1367         {
1368                 Int4 condition = As<Int4>(p0[predicateRegister.swizzle & 0x3]);
1369
1370                 if(predicateRegister.modifier == Shader::MODIFIER_NOT)
1371                 {
1372                         condition = ~condition;
1373                 }
1374
1375                 condition &= enableStack[enableIndex];
1376
1377                 if(!labelBlock[labelIndex])
1378                 {
1379                         labelBlock[labelIndex] = Nucleus::createBasicBlock();
1380                 }
1381
1382                 if(callRetBlock[labelIndex].size() > 1)
1383                 {
1384                         callStack[stackIndex++] = UInt(callSiteIndex);
1385                 }
1386
1387                 enableIndex++;
1388                 enableStack[enableIndex] = condition;
1389                 Int4 restoreLeave = enableLeave;
1390
1391                 Bool notAllFalse = SignMask(condition) != 0;
1392                 branch(notAllFalse, labelBlock[labelIndex], callRetBlock[labelIndex][callSiteIndex]);
1393                 Nucleus::setInsertBlock(callRetBlock[labelIndex][callSiteIndex]);
1394
1395                 enableIndex--;
1396                 enableLeave = restoreLeave;
1397         }
1398
1399         void PixelProgram::ELSE()
1400         {
1401                 ifDepth--;
1402
1403                 llvm::BasicBlock *falseBlock = ifFalseBlock[ifDepth];
1404                 llvm::BasicBlock *endBlock = Nucleus::createBasicBlock();
1405
1406                 if(isConditionalIf[ifDepth])
1407                 {
1408                         Int4 condition = ~enableStack[enableIndex] & enableStack[enableIndex - 1];
1409                         Bool notAllFalse = SignMask(condition) != 0;
1410
1411                         branch(notAllFalse, falseBlock, endBlock);
1412
1413                         enableStack[enableIndex] = ~enableStack[enableIndex] & enableStack[enableIndex - 1];
1414                 }
1415                 else
1416                 {
1417                         Nucleus::createBr(endBlock);
1418                         Nucleus::setInsertBlock(falseBlock);
1419                 }
1420
1421                 ifFalseBlock[ifDepth] = endBlock;
1422
1423                 ifDepth++;
1424         }
1425
1426         void PixelProgram::ENDIF()
1427         {
1428                 ifDepth--;
1429
1430                 llvm::BasicBlock *endBlock = ifFalseBlock[ifDepth];
1431
1432                 Nucleus::createBr(endBlock);
1433                 Nucleus::setInsertBlock(endBlock);
1434
1435                 if(isConditionalIf[ifDepth])
1436                 {
1437                         breakDepth--;
1438                         enableIndex--;
1439                 }
1440         }
1441
1442         void PixelProgram::ENDLOOP()
1443         {
1444                 loopRepDepth--;
1445
1446                 aL[loopDepth] = aL[loopDepth] + increment[loopDepth];   // FIXME: +=
1447
1448                 llvm::BasicBlock *testBlock = loopRepTestBlock[loopRepDepth];
1449                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth];
1450
1451                 Nucleus::createBr(testBlock);
1452                 Nucleus::setInsertBlock(endBlock);
1453
1454                 loopDepth--;
1455                 enableBreak = Int4(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
1456         }
1457
1458         void PixelProgram::ENDREP()
1459         {
1460                 loopRepDepth--;
1461
1462                 llvm::BasicBlock *testBlock = loopRepTestBlock[loopRepDepth];
1463                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth];
1464
1465                 Nucleus::createBr(testBlock);
1466                 Nucleus::setInsertBlock(endBlock);
1467
1468                 loopDepth--;
1469                 enableBreak = Int4(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
1470         }
1471
1472         void PixelProgram::ENDWHILE()
1473         {
1474                 loopRepDepth--;
1475
1476                 llvm::BasicBlock *testBlock = loopRepTestBlock[loopRepDepth];
1477                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth];
1478
1479                 Nucleus::createBr(testBlock);
1480                 Nucleus::setInsertBlock(endBlock);
1481
1482                 enableIndex--;
1483                 enableBreak = Int4(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
1484                 whileTest = false;
1485         }
1486
1487         void PixelProgram::ENDSWITCH()
1488         {
1489                 loopRepDepth--;
1490
1491                 llvm::BasicBlock *endBlock = loopRepEndBlock[loopRepDepth];
1492
1493                 Nucleus::createBr(loopRepEndBlock[loopRepDepth]);
1494                 Nucleus::setInsertBlock(endBlock);
1495
1496                 enableIndex--;
1497                 enableBreak = Int4(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
1498         }
1499
1500         void PixelProgram::IF(const Src &src)
1501         {
1502                 if(src.type == Shader::PARAMETER_CONSTBOOL)
1503                 {
1504                         IFb(src);
1505                 }
1506                 else if(src.type == Shader::PARAMETER_PREDICATE)
1507                 {
1508                         IFp(src);
1509                 }
1510                 else
1511                 {
1512                         Int4 condition = As<Int4>(fetchRegister(src).x);
1513                         IF(condition);
1514                 }
1515         }
1516
1517         void PixelProgram::IFb(const Src &boolRegister)
1518         {
1519                 ASSERT(ifDepth < 24 + 4);
1520
1521                 Bool condition = (*Pointer<Byte>(data + OFFSET(DrawData, ps.b[boolRegister.index])) != Byte(0));   // FIXME
1522
1523                 if(boolRegister.modifier == Shader::MODIFIER_NOT)
1524                 {
1525                         condition = !condition;
1526                 }
1527
1528                 llvm::BasicBlock *trueBlock = Nucleus::createBasicBlock();
1529                 llvm::BasicBlock *falseBlock = Nucleus::createBasicBlock();
1530
1531                 branch(condition, trueBlock, falseBlock);
1532
1533                 isConditionalIf[ifDepth] = false;
1534                 ifFalseBlock[ifDepth] = falseBlock;
1535
1536                 ifDepth++;
1537         }
1538
1539         void PixelProgram::IFp(const Src &predicateRegister)
1540         {
1541                 Int4 condition = As<Int4>(p0[predicateRegister.swizzle & 0x3]);
1542
1543                 if(predicateRegister.modifier == Shader::MODIFIER_NOT)
1544                 {
1545                         condition = ~condition;
1546                 }
1547
1548                 IF(condition);
1549         }
1550
1551         void PixelProgram::IFC(Vector4f &src0, Vector4f &src1, Control control)
1552         {
1553                 Int4 condition;
1554
1555                 switch(control)
1556                 {
1557                 case Shader::CONTROL_GT: condition = CmpNLE(src0.x, src1.x); break;
1558                 case Shader::CONTROL_EQ: condition = CmpEQ(src0.x, src1.x);  break;
1559                 case Shader::CONTROL_GE: condition = CmpNLT(src0.x, src1.x); break;
1560                 case Shader::CONTROL_LT: condition = CmpLT(src0.x, src1.x);  break;
1561                 case Shader::CONTROL_NE: condition = CmpNEQ(src0.x, src1.x); break;
1562                 case Shader::CONTROL_LE: condition = CmpLE(src0.x, src1.x);  break;
1563                 default:
1564                         ASSERT(false);
1565                 }
1566
1567                 IF(condition);
1568         }
1569
1570         void PixelProgram::IF(Int4 &condition)
1571         {
1572                 condition &= enableStack[enableIndex];
1573
1574                 enableIndex++;
1575                 enableStack[enableIndex] = condition;
1576
1577                 llvm::BasicBlock *trueBlock = Nucleus::createBasicBlock();
1578                 llvm::BasicBlock *falseBlock = Nucleus::createBasicBlock();
1579
1580                 Bool notAllFalse = SignMask(condition) != 0;
1581
1582                 branch(notAllFalse, trueBlock, falseBlock);
1583
1584                 isConditionalIf[ifDepth] = true;
1585                 ifFalseBlock[ifDepth] = falseBlock;
1586
1587                 ifDepth++;
1588                 breakDepth++;
1589         }
1590
1591         void PixelProgram::LABEL(int labelIndex)
1592         {
1593                 if(!labelBlock[labelIndex])
1594                 {
1595                         labelBlock[labelIndex] = Nucleus::createBasicBlock();
1596                 }
1597
1598                 Nucleus::setInsertBlock(labelBlock[labelIndex]);
1599                 currentLabel = labelIndex;
1600         }
1601
1602         void PixelProgram::LOOP(const Src &integerRegister)
1603         {
1604                 loopDepth++;
1605
1606                 iteration[loopDepth] = *Pointer<Int>(data + OFFSET(DrawData, ps.i[integerRegister.index][0]));
1607                 aL[loopDepth] = *Pointer<Int>(data + OFFSET(DrawData, ps.i[integerRegister.index][1]));
1608                 increment[loopDepth] = *Pointer<Int>(data + OFFSET(DrawData, ps.i[integerRegister.index][2]));
1609
1610                 //      If(increment[loopDepth] == 0)
1611                 //      {
1612                 //              increment[loopDepth] = 1;
1613                 //      }
1614
1615                 llvm::BasicBlock *loopBlock = Nucleus::createBasicBlock();
1616                 llvm::BasicBlock *testBlock = Nucleus::createBasicBlock();
1617                 llvm::BasicBlock *endBlock = Nucleus::createBasicBlock();
1618
1619                 loopRepTestBlock[loopRepDepth] = testBlock;
1620                 loopRepEndBlock[loopRepDepth] = endBlock;
1621
1622                 // FIXME: jump(testBlock)
1623                 Nucleus::createBr(testBlock);
1624                 Nucleus::setInsertBlock(testBlock);
1625
1626                 branch(iteration[loopDepth] > 0, loopBlock, endBlock);
1627                 Nucleus::setInsertBlock(loopBlock);
1628
1629                 iteration[loopDepth] = iteration[loopDepth] - 1;   // FIXME: --
1630
1631                 loopRepDepth++;
1632                 breakDepth = 0;
1633         }
1634
1635         void PixelProgram::REP(const Src &integerRegister)
1636         {
1637                 loopDepth++;
1638
1639                 iteration[loopDepth] = *Pointer<Int>(data + OFFSET(DrawData, ps.i[integerRegister.index][0]));
1640                 aL[loopDepth] = aL[loopDepth - 1];
1641
1642                 llvm::BasicBlock *loopBlock = Nucleus::createBasicBlock();
1643                 llvm::BasicBlock *testBlock = Nucleus::createBasicBlock();
1644                 llvm::BasicBlock *endBlock = Nucleus::createBasicBlock();
1645
1646                 loopRepTestBlock[loopRepDepth] = testBlock;
1647                 loopRepEndBlock[loopRepDepth] = endBlock;
1648
1649                 // FIXME: jump(testBlock)
1650                 Nucleus::createBr(testBlock);
1651                 Nucleus::setInsertBlock(testBlock);
1652
1653                 branch(iteration[loopDepth] > 0, loopBlock, endBlock);
1654                 Nucleus::setInsertBlock(loopBlock);
1655
1656                 iteration[loopDepth] = iteration[loopDepth] - 1;   // FIXME: --
1657
1658                 loopRepDepth++;
1659                 breakDepth = 0;
1660         }
1661
1662         void PixelProgram::WHILE(const Src &temporaryRegister)
1663         {
1664                 enableIndex++;
1665
1666                 llvm::BasicBlock *loopBlock = Nucleus::createBasicBlock();
1667                 llvm::BasicBlock *testBlock = Nucleus::createBasicBlock();
1668                 llvm::BasicBlock *endBlock = Nucleus::createBasicBlock();
1669
1670                 loopRepTestBlock[loopRepDepth] = testBlock;
1671                 loopRepEndBlock[loopRepDepth] = endBlock;
1672
1673                 Int4 restoreBreak = enableBreak;
1674                 Int4 restoreContinue = enableContinue;
1675
1676                 // FIXME: jump(testBlock)
1677                 Nucleus::createBr(testBlock);
1678                 Nucleus::setInsertBlock(testBlock);
1679                 enableContinue = restoreContinue;
1680
1681                 const Vector4f &src = fetchRegister(temporaryRegister);
1682                 Int4 condition = As<Int4>(src.x);
1683                 condition &= enableStack[enableIndex - 1];
1684                 if(shader->containsLeaveInstruction()) condition &= enableLeave;
1685                 enableStack[enableIndex] = condition;
1686
1687                 Bool notAllFalse = SignMask(condition) != 0;
1688                 branch(notAllFalse, loopBlock, endBlock);
1689
1690                 Nucleus::setInsertBlock(endBlock);
1691                 enableBreak = restoreBreak;
1692
1693                 Nucleus::setInsertBlock(loopBlock);
1694
1695                 loopRepDepth++;
1696                 breakDepth = 0;
1697         }
1698
1699         void PixelProgram::SWITCH()
1700         {
1701                 enableIndex++;
1702                 enableStack[enableIndex] = Int4(0xFFFFFFFF);
1703
1704                 llvm::BasicBlock *endBlock = Nucleus::createBasicBlock();
1705
1706                 loopRepTestBlock[loopRepDepth] = nullptr;
1707                 loopRepEndBlock[loopRepDepth] = endBlock;
1708
1709                 loopRepDepth++;
1710                 breakDepth = 0;
1711         }
1712
1713         void PixelProgram::RET()
1714         {
1715                 if(currentLabel == -1)
1716                 {
1717                         returnBlock = Nucleus::createBasicBlock();
1718                         Nucleus::createBr(returnBlock);
1719                 }
1720                 else
1721                 {
1722                         llvm::BasicBlock *unreachableBlock = Nucleus::createBasicBlock();
1723
1724                         if(callRetBlock[currentLabel].size() > 1)   // Pop the return destination from the call stack
1725                         {
1726                                 // FIXME: Encapsulate
1727                                 UInt index = callStack[--stackIndex];
1728
1729                                 llvm::Value *value = index.loadValue();
1730                                 llvm::Value *switchInst = Nucleus::createSwitch(value, unreachableBlock, (int)callRetBlock[currentLabel].size());
1731
1732                                 for(unsigned int i = 0; i < callRetBlock[currentLabel].size(); i++)
1733                                 {
1734                                         Nucleus::addSwitchCase(switchInst, i, callRetBlock[currentLabel][i]);
1735                                 }
1736                         }
1737                         else if(callRetBlock[currentLabel].size() == 1)   // Jump directly to the unique return destination
1738                         {
1739                                 Nucleus::createBr(callRetBlock[currentLabel][0]);
1740                         }
1741                         else   // Function isn't called
1742                         {
1743                                 Nucleus::createBr(unreachableBlock);
1744                         }
1745
1746                         Nucleus::setInsertBlock(unreachableBlock);
1747                         Nucleus::createUnreachable();
1748                 }
1749         }
1750
1751         void PixelProgram::LEAVE()
1752         {
1753                 enableLeave = enableLeave & ~enableStack[enableIndex];
1754
1755                 // FIXME: Return from function if all instances left
1756                 // FIXME: Use enableLeave in other control-flow constructs
1757         }
1758 }