src/mesa/drivers/dri/r600/r700_fragprog.c

   1 /*
   2  * Copyright (C) 2008-2009  Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  */
  21
  22 /*
  23  * Authors:
  24  *   Richard Li <RichardZ.Li@amd.com>, <richardradeon@gmail.com>
  25  *   CooperYuan <cooper.yuan@amd.com>, <cooperyuan@gmail.com>
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdarg.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <math.h>
  33
  34 #include "main/imports.h"
  35 #include "shader/prog_parameter.h"
  36 #include "shader/prog_statevars.h"
  37
  38 #include "r600_context.h"
  39 #include "r600_cmdbuf.h"
  40
  41 #include "r700_fragprog.h"
  42
  43 #include "r700_debug.h"
  44
  45 //TODO : Validate FP input with VP output.
  46 void Map_Fragment_Program(r700_AssemblerBase         *pAsm,
  47                                                   struct gl_fragment_program *mesa_fp)
  48 {
  49         unsigned int unBit;
  50     unsigned int i;
  51     GLuint       ui;
  52
  53         pAsm->number_used_registers = 0;
  54
  55 //Input mapping : mesa_fp->Base.InputsRead set the flag, set in
  56         //The flags parsed in parse_attrib_binding. FRAG_ATTRIB_COLx, FRAG_ATTRIB_TEXx, ...
  57         //MUST match order in Map_Vertex_Output
  58         unBit = 1 << FRAG_ATTRIB_WPOS;
  59         if(mesa_fp->Base.InputsRead & unBit)
  60         {
  61                 pAsm->uiFP_AttributeMap[FRAG_ATTRIB_WPOS] = pAsm->number_used_registers++;
  62         }
  63
  64         unBit = 1 << FRAG_ATTRIB_COL0;
  65         if(mesa_fp->Base.InputsRead & unBit)
  66         {
  67                 pAsm->uiFP_AttributeMap[FRAG_ATTRIB_COL0] = pAsm->number_used_registers++;
  68         }
  69
  70         unBit = 1 << FRAG_ATTRIB_COL1;
  71         if(mesa_fp->Base.InputsRead & unBit)
  72         {
  73                 pAsm->uiFP_AttributeMap[FRAG_ATTRIB_COL1] = pAsm->number_used_registers++;
  74         }
  75
  76         unBit = 1 << FRAG_ATTRIB_FOGC;
  77         if(mesa_fp->Base.InputsRead & unBit)
  78         {
  79                 pAsm->uiFP_AttributeMap[FRAG_ATTRIB_FOGC] = pAsm->number_used_registers++;
  80         }
  81
  82         for(i=0; i<8; i++)
  83         {
  84                 unBit = 1 << (FRAG_ATTRIB_TEX0 + i);
  85                 if(mesa_fp->Base.InputsRead & unBit)
  86                 {
  87                         pAsm->uiFP_AttributeMap[FRAG_ATTRIB_TEX0 + i] = pAsm->number_used_registers++;
  88                 }
  89         }
  90
  91 /* Map temporary registers (GPRs) */
  92     pAsm->starting_temp_register_number = pAsm->number_used_registers;
  93
  94     if(mesa_fp->Base.NumNativeTemporaries >= mesa_fp->Base.NumTemporaries)
  95     {
  96             pAsm->number_used_registers += mesa_fp->Base.NumNativeTemporaries;
  97     }
  98     else
  99     {
 100         pAsm->number_used_registers += mesa_fp->Base.NumTemporaries;
 101     }
 102
 103 /* Output mapping */
 104         pAsm->number_of_exports = 0;
 105         pAsm->number_of_colorandz_exports = 0; /* don't include stencil and mask out. */
 106         pAsm->starting_export_register_number = pAsm->number_used_registers;
 107         unBit = 1 << FRAG_RESULT_COLOR;
 108         if(mesa_fp->Base.OutputsWritten & unBit)
 109         {
 110                 pAsm->uiFP_OutputMap[FRAG_RESULT_COLOR] = pAsm->number_used_registers++;
 111                 pAsm->number_of_exports++;
 112                 pAsm->number_of_colorandz_exports++;
 113         }
 114         unBit = 1 << FRAG_RESULT_DEPTH;
 115         if(mesa_fp->Base.OutputsWritten & unBit)
 116         {
 117         pAsm->depth_export_register_number = pAsm->number_used_registers;
 118                 pAsm->uiFP_OutputMap[FRAG_RESULT_DEPTH] = pAsm->number_used_registers++;
 119                 pAsm->number_of_exports++;
 120                 pAsm->number_of_colorandz_exports++;
 121                 pAsm->pR700Shader->depthIsExported = 1;
 122         }
 123
 124     pAsm->pucOutMask = (unsigned char*) MALLOC(pAsm->number_of_exports);
 125     for(ui=0; ui<pAsm->number_of_exports; ui++)
 126     {
 127         pAsm->pucOutMask[ui] = 0x0;
 128     }
 129
 130     pAsm->uFirstHelpReg = pAsm->number_used_registers;
 131 }
 132
 133 GLboolean Find_Instruction_Dependencies_fp(struct r700_fragment_program *fp,
 134                                                                 struct gl_fragment_program   *mesa_fp)
 135 {
 136     GLuint i, j;
 137     GLint * puiTEMPwrites;
 138     GLint * puiTEMPreads;
 139     struct prog_instruction * pILInst;
 140     InstDeps         *pInstDeps;
 141     struct prog_instruction * texcoord_DepInst;
 142     GLint              nDepInstID;
 143
 144     puiTEMPwrites = (GLint*) MALLOC(sizeof(GLuint)*mesa_fp->Base.NumTemporaries);
 145     puiTEMPreads = (GLint*) MALLOC(sizeof(GLuint)*mesa_fp->Base.NumTemporaries);
 146
 147     for(i=0; i<mesa_fp->Base.NumTemporaries; i++)
 148     {
 149         puiTEMPwrites[i] = -1;
 150         puiTEMPreads[i] = -1;
 151     }
 152
 153     pInstDeps = (InstDeps*)MALLOC(sizeof(InstDeps)*mesa_fp->Base.NumInstructions);
 154
 155     for(i=0; i<mesa_fp->Base.NumInstructions; i++)
 156     {
 157         pInstDeps[i].nDstDep = -1;
 158         pILInst = &(mesa_fp->Base.Instructions[i]);
 159
 160         //Dst
 161         if(pILInst->DstReg.File == PROGRAM_TEMPORARY)
 162         {
 163             //Set lastwrite for the temp
 164             puiTEMPwrites[pILInst->DstReg.Index] = i;
 165         }
 166
 167         //Src
 168         for(j=0; j<3; j++)
 169         {
 170             if(pILInst->SrcReg[j].File == PROGRAM_TEMPORARY)
 171             {
 172                 //Set dep.
 173                 pInstDeps[i].nSrcDeps[j] = puiTEMPwrites[pILInst->SrcReg[j].Index];
 174                 //Set first read
 175                 if(puiTEMPreads[pILInst->SrcReg[j].Index] < 0 )
 176                 {
 177                     puiTEMPreads[pILInst->SrcReg[j].Index] = i;
 178                 }
 179             }
 180             else
 181             {
 182                 pInstDeps[i].nSrcDeps[j] = -1;
 183             }
 184         }
 185     }
 186
 187     fp->r700AsmCode.pInstDeps = pInstDeps;
 188
 189     //Find dep for tex inst
 190     for(i=0; i<mesa_fp->Base.NumInstructions; i++)
 191     {
 192         pILInst = &(mesa_fp->Base.Instructions[i]);
 193
 194         if(GL_TRUE == IsTex(pILInst->Opcode))
 195         {   //src0 is the tex coord register, src1 is texunit, src2 is textype
 196             nDepInstID = pInstDeps[i].nSrcDeps[0];
 197             if(nDepInstID >= 0)
 198             {
 199                 texcoord_DepInst = &(mesa_fp->Base.Instructions[nDepInstID]);
 200                 if(GL_TRUE == IsAlu(texcoord_DepInst->Opcode) )
 201                 {
 202                     pInstDeps[nDepInstID].nDstDep = i;
 203                     pInstDeps[i].nDstDep = i;
 204                 }
 205                 else if(GL_TRUE == IsTex(texcoord_DepInst->Opcode) )
 206                 {
 207                     pInstDeps[i].nDstDep = i;
 208                 }
 209                 else
 210                 {   //... other deps?
 211                 }
 212             }
 213             // make sure that we dont overwrite src used earlier
 214             nDepInstID = puiTEMPreads[pILInst->DstReg.Index];
 215             if(nDepInstID < i)
 216             {
 217                 pInstDeps[i].nDstDep = puiTEMPreads[pILInst->DstReg.Index];
 218                 texcoord_DepInst = &(mesa_fp->Base.Instructions[nDepInstID]);
 219                 if(GL_TRUE == IsAlu(texcoord_DepInst->Opcode) )
 220                 {
 221                     pInstDeps[nDepInstID].nDstDep = i;
 222                 }
 223
 224             }
 225
 226         }
 227         }
 228
 229     FREE(puiTEMPwrites);
 230     FREE(puiTEMPreads);
 231
 232     return GL_TRUE;
 233 }
 234
 235 GLboolean r700TranslateFragmentShader(struct r700_fragment_program *fp,
 236                                                              struct gl_fragment_program   *mesa_fp)
 237 {
 238         GLuint    number_of_colors_exported;
 239         GLboolean z_enabled = GL_FALSE;
 240         GLuint    unBit;
 241
 242     //Init_Program
 243         Init_r700_AssemblerBase( SPT_FP, &(fp->r700AsmCode), &(fp->r700Shader) );
 244         Map_Fragment_Program(&(fp->r700AsmCode), mesa_fp);
 245
 246     if( GL_FALSE == Find_Instruction_Dependencies_fp(fp, mesa_fp) )
 247         {
 248                 return GL_FALSE;
 249     }
 250
 251         if( GL_FALSE == AssembleInstr(mesa_fp->Base.NumInstructions,
 252                                   &(mesa_fp->Base.Instructions[0]),
 253                                   &(fp->r700AsmCode)) )
 254         {
 255                 return GL_FALSE;
 256         }
 257
 258     if(GL_FALSE == Process_Fragment_Exports(&(fp->r700AsmCode), mesa_fp->Base.OutputsWritten) )
 259     {
 260         return GL_FALSE;
 261     }
 262
 263     fp->r700Shader.nRegs = (fp->r700AsmCode.number_used_registers == 0) ? 0
 264                          : (fp->r700AsmCode.number_used_registers - 1);
 265
 266         fp->r700Shader.nParamExports = fp->r700AsmCode.number_of_exports;
 267
 268         number_of_colors_exported = fp->r700AsmCode.number_of_colorandz_exports;
 269
 270         unBit = 1 << FRAG_RESULT_DEPTH;
 271         if(mesa_fp->Base.OutputsWritten & unBit)
 272         {
 273                 z_enabled = GL_TRUE;
 274                 number_of_colors_exported--;
 275         }
 276
 277         /* illegal to set this to 0 */
 278         if(number_of_colors_exported || z_enabled)
 279         {
 280             fp->r700Shader.exportMode = number_of_colors_exported << 1 | z_enabled;
 281         }
 282         else
 283         {
 284             fp->r700Shader.exportMode = (1 << 1);
 285         }
 286
 287     fp->translated = GL_TRUE;
 288
 289         return GL_TRUE;
 290 }
 291
 292 void r700SelectFragmentShader(GLcontext *ctx)
 293 {
 294     context_t *context = R700_CONTEXT(ctx);
 295     struct r700_fragment_program *fp = (struct r700_fragment_program *)
 296             (ctx->FragmentProgram._Current);
 297     if (context->radeon.radeonScreen->chip_family < CHIP_FAMILY_RV770)
 298     {
 299             fp->r700AsmCode.bR6xx = 1;
 300     }
 301
 302     if (GL_FALSE == fp->translated)
 303             r700TranslateFragmentShader(fp, &(fp->mesa_program));
 304 }
 305
 306 void * r700GetActiveFpShaderBo(GLcontext * ctx)
 307 {
 308     struct r700_fragment_program *fp = (struct r700_fragment_program *)
 309                                            (ctx->FragmentProgram._Current);
 310
 311     return fp->shaderbo;
 312 }
 313
 314 GLboolean r700SetupFragmentProgram(GLcontext * ctx)
 315 {
 316     context_t *context = R700_CONTEXT(ctx);
 317     R700_CHIP_CONTEXT *r700 = (R700_CHIP_CONTEXT*)(&context->hw);
 318     struct r700_fragment_program *fp = (struct r700_fragment_program *)
 319                                            (ctx->FragmentProgram._Current);
 320     r700_AssemblerBase         *pAsm = &(fp->r700AsmCode);
 321     struct gl_fragment_program *mesa_fp = &(fp->mesa_program);
 322     struct gl_program_parameter_list *paramList;
 323     unsigned int unNumParamData;
 324     unsigned int ui, i;
 325     unsigned int unNumOfReg;
 326     unsigned int unBit;
 327     GLuint exportCount;
 328
 329     if(GL_FALSE == fp->loaded)
 330     {
 331             if(fp->r700Shader.bNeedsAssembly == GL_TRUE)
 332             {
 333                     Assemble( &(fp->r700Shader) );
 334             }
 335
 336         /* Load fp to gpu */
 337         r600EmitShader(ctx,
 338                        &(fp->shaderbo),
 339                        (GLvoid *)(fp->r700Shader.pProgram),
 340                        fp->r700Shader.uShaderBinaryDWORDSize,
 341                        "FS");
 342
 343         fp->loaded = GL_TRUE;
 344     }
 345
 346     DumpHwBinary(DUMP_PIXEL_SHADER, (GLvoid *)(fp->r700Shader.pProgram),
 347                  fp->r700Shader.uShaderBinaryDWORDSize);
 348
 349     /* TODO : enable this after MemUse fixed *=
 350     (context->chipobj.MemUse)(context, fp->shadercode.buf->id);
 351     */
 352
 353     R600_STATECHANGE(context, ps);
 354
 355     r700->ps.SQ_PGM_RESOURCES_PS.u32All = 0;
 356     SETbit(r700->ps.SQ_PGM_RESOURCES_PS.u32All, PGM_RESOURCES__PRIME_CACHE_ON_DRAW_bit);
 357
 358     r700->ps.SQ_PGM_START_PS.u32All = 0; /* set from buffer obj */
 359
 360     R600_STATECHANGE(context, spi);
 361
 362     unNumOfReg = fp->r700Shader.nRegs + 1;
 363
 364     ui = (r700->SPI_PS_IN_CONTROL_0.u32All & NUM_INTERP_mask) / (1 << NUM_INTERP_shift);
 365
 366     /* PS uses fragment.position */
 367     if (mesa_fp->Base.InputsRead & (1 << FRAG_ATTRIB_WPOS))
 368     {
 369         ui += 1;
 370         SETfield(r700->SPI_PS_IN_CONTROL_0.u32All, ui, NUM_INTERP_shift, NUM_INTERP_mask);
 371         SETfield(r700->SPI_PS_IN_CONTROL_0.u32All, CENTERS_ONLY, BARYC_SAMPLE_CNTL_shift, BARYC_SAMPLE_CNTL_mask);
 372         SETbit(r700->SPI_PS_IN_CONTROL_0.u32All, POSITION_ENA_bit);
 373         SETbit(r700->SPI_INPUT_Z.u32All, PROVIDE_Z_TO_SPI_bit);
 374     }
 375     else
 376     {
 377         CLEARbit(r700->SPI_PS_IN_CONTROL_0.u32All, POSITION_ENA_bit);
 378         CLEARbit(r700->SPI_INPUT_Z.u32All, PROVIDE_Z_TO_SPI_bit);
 379     }
 380
 381     ui = (unNumOfReg < ui) ? ui : unNumOfReg;
 382
 383     SETfield(r700->ps.SQ_PGM_RESOURCES_PS.u32All, ui, NUM_GPRS_shift, NUM_GPRS_mask);
 384
 385     CLEARbit(r700->ps.SQ_PGM_RESOURCES_PS.u32All, UNCACHED_FIRST_INST_bit);
 386
 387     if(fp->r700Shader.uStackSize) /* we don't use branch for now, it should be zero. */
 388         {
 389         SETfield(r700->ps.SQ_PGM_RESOURCES_PS.u32All, fp->r700Shader.uStackSize,
 390                  STACK_SIZE_shift, STACK_SIZE_mask);
 391     }
 392
 393     SETfield(r700->ps.SQ_PGM_EXPORTS_PS.u32All, fp->r700Shader.exportMode,
 394              EXPORT_MODE_shift, EXPORT_MODE_mask);
 395
 396     // emit ps input map
 397     unBit = 1 << FRAG_ATTRIB_WPOS;
 398     if(mesa_fp->Base.InputsRead & unBit)
 399     {
 400             ui = pAsm->uiFP_AttributeMap[FRAG_ATTRIB_WPOS];
 401             SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, SEL_CENTROID_bit);
 402             SETfield(r700->SPI_PS_INPUT_CNTL[ui].u32All, ui,
 403                      SEMANTIC_shift, SEMANTIC_mask);
 404             if (r700->SPI_INTERP_CONTROL_0.u32All & FLAT_SHADE_ENA_bit)
 405                     SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 406             else
 407                     CLEARbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 408     }
 409
 410     unBit = 1 << FRAG_ATTRIB_COL0;
 411     if(mesa_fp->Base.InputsRead & unBit)
 412     {
 413             ui = pAsm->uiFP_AttributeMap[FRAG_ATTRIB_COL0];
 414             SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, SEL_CENTROID_bit);
 415             SETfield(r700->SPI_PS_INPUT_CNTL[ui].u32All, ui,
 416                      SEMANTIC_shift, SEMANTIC_mask);
 417             if (r700->SPI_INTERP_CONTROL_0.u32All & FLAT_SHADE_ENA_bit)
 418                     SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 419             else
 420                     CLEARbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 421     }
 422
 423     unBit = 1 << FRAG_ATTRIB_COL1;
 424     if(mesa_fp->Base.InputsRead & unBit)
 425     {
 426             ui = pAsm->uiFP_AttributeMap[FRAG_ATTRIB_COL1];
 427             SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, SEL_CENTROID_bit);
 428             SETfield(r700->SPI_PS_INPUT_CNTL[ui].u32All, ui,
 429                      SEMANTIC_shift, SEMANTIC_mask);
 430             if (r700->SPI_INTERP_CONTROL_0.u32All & FLAT_SHADE_ENA_bit)
 431                     SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 432             else
 433                     CLEARbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 434     }
 435
 436     unBit = 1 << FRAG_ATTRIB_FOGC;
 437     if(mesa_fp->Base.InputsRead & unBit)
 438     {
 439             ui = pAsm->uiFP_AttributeMap[FRAG_ATTRIB_FOGC];
 440             SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, SEL_CENTROID_bit);
 441             SETfield(r700->SPI_PS_INPUT_CNTL[ui].u32All, ui,
 442                      SEMANTIC_shift, SEMANTIC_mask);
 443             if (r700->SPI_INTERP_CONTROL_0.u32All & FLAT_SHADE_ENA_bit)
 444                     SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 445             else
 446                     CLEARbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 447     }
 448
 449     for(i=0; i<8; i++)
 450     {
 451             unBit = 1 << (FRAG_ATTRIB_TEX0 + i);
 452             if(mesa_fp->Base.InputsRead & unBit)
 453             {
 454                     ui = pAsm->uiFP_AttributeMap[FRAG_ATTRIB_TEX0 + i];
 455                     SETbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, SEL_CENTROID_bit);
 456                     SETfield(r700->SPI_PS_INPUT_CNTL[ui].u32All, ui,
 457                              SEMANTIC_shift, SEMANTIC_mask);
 458                     CLEARbit(r700->SPI_PS_INPUT_CNTL[ui].u32All, FLAT_SHADE_bit);
 459             }
 460     }
 461
 462     exportCount = (r700->ps.SQ_PGM_EXPORTS_PS.u32All & EXPORT_MODE_mask) / (1 << EXPORT_MODE_shift);
 463     if (r700->CB_SHADER_CONTROL.u32All != ((1 << exportCount) - 1))
 464     {
 465             R600_STATECHANGE(context, cb);
 466             r700->CB_SHADER_CONTROL.u32All = (1 << exportCount) - 1;
 467     }
 468
 469     /* sent out shader constants. */
 470     paramList = fp->mesa_program.Base.Parameters;
 471
 472     if(NULL != paramList) {
 473             _mesa_load_state_parameters(ctx, paramList);
 474
 475             if (paramList->NumParameters > R700_MAX_DX9_CONSTS)
 476                     return GL_FALSE;
 477
 478             R600_STATECHANGE(context, ps_consts);
 479
 480             r700->ps.num_consts = paramList->NumParameters;
 481
 482             unNumParamData = paramList->NumParameters;
 483
 484             for(ui=0; ui<unNumParamData; ui++) {
 485                     r700->ps.consts[ui][0].f32All = paramList->ParameterValues[ui][0];
 486                     r700->ps.consts[ui][1].f32All = paramList->ParameterValues[ui][1];
 487                     r700->ps.consts[ui][2].f32All = paramList->ParameterValues[ui][2];
 488                     r700->ps.consts[ui][3].f32All = paramList->ParameterValues[ui][3];
 489             }
 490     } else
 491             r700->ps.num_consts = 0;
 492
 493     return GL_TRUE;
 494 }
 495