src/gallium/auxiliary/tgsi/tgsi_dump.c - platform/external/mesa3d - Git at Google

 /**************************************************************************
  *
  * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sub license, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice (including the
  * next paragraph) shall be included in all copies or substantial portions
  * of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  **************************************************************************/

 #include "util/u_debug.h"
 #include "util/u_string.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "tgsi_dump.h"
 #include "tgsi_info.h"
 #include "tgsi_iterate.h"
 #include "tgsi_strings.h"


 /** Number of spaces to indent for IF/LOOP/etc */
 static const int indent_spaces = 3;


 struct dump_ctx
 {
    struct tgsi_iterate_context iter;

    uint instno;
    int indent;

    uint indentation;

    void (*dump_printf)(struct dump_ctx *ctx, const char *format, ...);
 };

 static void
 dump_ctx_printf(struct dump_ctx *ctx, const char *format, ...)
 {
    va_list ap;
    (void)ctx;
    va_start(ap, format);
    _debug_vprintf(format, ap);
    va_end(ap);
 }

 static void
 dump_enum(
    struct dump_ctx *ctx,
    uint e,
    const char **enums,
    uint enum_count )
 {
    if (e >= enum_count)
       ctx->dump_printf( ctx, "%u", e );
    else
       ctx->dump_printf( ctx, "%s", enums[e] );
 }

 #define EOL()           ctx->dump_printf( ctx, "\n" )
 #define TXT(S)          ctx->dump_printf( ctx, "%s", S )
 #define CHR(C)          ctx->dump_printf( ctx, "%c", C )
 #define UIX(I)          ctx->dump_printf( ctx, "0x%x", I )
 #define UID(I)          ctx->dump_printf( ctx, "%u", I )
 #define INSTID(I)       ctx->dump_printf( ctx, "% 3u", I )
 #define SID(I)          ctx->dump_printf( ctx, "%d", I )
 #define FLT(F)          ctx->dump_printf( ctx, "%10.4f", F )
 #define ENM(E,ENUMS)    dump_enum( ctx, E, ENUMS, sizeof( ENUMS ) / sizeof( *ENUMS ) )

 const char *
 tgsi_swizzle_names[4] =
 {
    "x",
    "y",
    "z",
    "w"
 };

 static void
 _dump_register_src(
    struct dump_ctx *ctx,
    const struct tgsi_full_src_register *src )
 {
    ENM(src->Register.File, tgsi_file_names);
    if (src->Register.Dimension) {
       if (src->Dimension.Indirect) {
          CHR( '[' );
          ENM( src->DimIndirect.File, tgsi_file_names );
          CHR( '[' );
          SID( src->DimIndirect.Index );
          TXT( "]." );
          ENM( src->DimIndirect.SwizzleX, tgsi_swizzle_names );
          if (src->Dimension.Index != 0) {
             if (src->Dimension.Index > 0)
                CHR( '+' );
             SID( src->Dimension.Index );
          }
          CHR( ']' );
       } else {
          CHR('[');
          SID(src->Dimension.Index);
          CHR(']');
       }
    }
    if (src->Register.Indirect) {
       CHR( '[' );
       ENM( src->Indirect.File, tgsi_file_names );
       CHR( '[' );
       SID( src->Indirect.Index );
       TXT( "]." );
       ENM( src->Indirect.SwizzleX, tgsi_swizzle_names );
       if (src->Register.Index != 0) {
          if (src->Register.Index > 0)
             CHR( '+' );
          SID( src->Register.Index );
       }
       CHR( ']' );
    } else {
       CHR( '[' );
       SID( src->Register.Index );
       CHR( ']' );
    }
 }


 static void
 _dump_register_dst(
    struct dump_ctx *ctx,
    const struct tgsi_full_dst_register *dst )
 {
    ENM(dst->Register.File, tgsi_file_names);
    if (dst->Register.Dimension) {
       if (dst->Dimension.Indirect) {
          CHR( '[' );
          ENM( dst->DimIndirect.File, tgsi_file_names );
          CHR( '[' );
          SID( dst->DimIndirect.Index );
          TXT( "]." );
          ENM( dst->DimIndirect.SwizzleX, tgsi_swizzle_names );
          if (dst->Dimension.Index != 0) {
             if (dst->Dimension.Index > 0)
                CHR( '+' );
             SID( dst->Dimension.Index );
          }
          CHR( ']' );
       } else {
          CHR('[');
          SID(dst->Dimension.Index);
          CHR(']');
       }
    }
    if (dst->Register.Indirect) {
       CHR( '[' );
       ENM( dst->Indirect.File, tgsi_file_names );
       CHR( '[' );
       SID( dst->Indirect.Index );
       TXT( "]." );
       ENM( dst->Indirect.SwizzleX, tgsi_swizzle_names );
       if (dst->Register.Index != 0) {
          if (dst->Register.Index > 0)
             CHR( '+' );
          SID( dst->Register.Index );
       }
       CHR( ']' );
    } else {
       CHR( '[' );
       SID( dst->Register.Index );
       CHR( ']' );
    }
 }
 static void
 _dump_writemask(
    struct dump_ctx *ctx,
    uint writemask )
 {
    if (writemask != TGSI_WRITEMASK_XYZW) {
       CHR( '.' );
       if (writemask & TGSI_WRITEMASK_X)
          CHR( 'x' );
       if (writemask & TGSI_WRITEMASK_Y)
          CHR( 'y' );
       if (writemask & TGSI_WRITEMASK_Z)
          CHR( 'z' );
       if (writemask & TGSI_WRITEMASK_W)
          CHR( 'w' );
    }
 }

 static void
 dump_imm_data(struct tgsi_iterate_context *iter,
               union tgsi_immediate_data *data,
               unsigned num_tokens,
               unsigned data_type)
 {
    struct dump_ctx *ctx = (struct dump_ctx *)iter;
    unsigned i ;

    TXT( " {" );

    assert( num_tokens <= 4 );
    for (i = 0; i < num_tokens; i++) {
       switch (data_type) {
       case TGSI_IMM_FLOAT32:
          FLT( data[i].Float );
          break;
       case TGSI_IMM_UINT32:
          UID(data[i].Uint);
          break;
       case TGSI_IMM_INT32:
          SID(data[i].Int);
          break;
       default:
          assert( 0 );
       }

       if (i < num_tokens - 1)
          TXT( ", " );
    }
    TXT( "}" );
 }

 static boolean
 iter_declaration(
    struct tgsi_iterate_context *iter,
    struct tgsi_full_declaration *decl )
 {
    struct dump_ctx *ctx = (struct dump_ctx *)iter;

    TXT( "DCL " );

    ENM(decl->Declaration.File, tgsi_file_names);

    /* all geometry shader inputs are two dimensional */
    if (decl->Declaration.File == TGSI_FILE_INPUT &&
        iter->processor.Processor == TGSI_PROCESSOR_GEOMETRY) {
       TXT("[]");
    }

    if (decl->Declaration.Dimension) {
       CHR('[');
       SID(decl->Dim.Index2D);
       CHR(']');
    }

    CHR('[');
    SID(decl->Range.First);
    if (decl->Range.First != decl->Range.Last) {
       TXT("..");
       SID(decl->Range.Last);
    }
    CHR(']');

    _dump_writemask(
       ctx,
       decl->Declaration.UsageMask );

    if (decl->Declaration.Local)
       TXT( ", LOCAL" );

    if (decl->Declaration.Semantic) {
       TXT( ", " );
       ENM( decl->Semantic.Name, tgsi_semantic_names );
       if (decl->Semantic.Index != 0 ||
           decl->Semantic.Name == TGSI_SEMANTIC_GENERIC) {
          CHR( '[' );
          UID( decl->Semantic.Index );
          CHR( ']' );
       }
    }

    if (decl->Declaration.File == TGSI_FILE_RESOURCE) {
       TXT(", ");
       ENM(decl->Resource.Resource, tgsi_texture_names);
       if (decl->Resource.Writable)
          TXT(", WR");
       if (decl->Resource.Raw)
          TXT(", RAW");
    }

    if (decl->Declaration.File == TGSI_FILE_SAMPLER_VIEW) {
       TXT(", ");
       ENM(decl->SamplerView.Resource, tgsi_texture_names);
       TXT(", ");
       if ((decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeY) &&
           (decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeZ) &&
           (decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeW)) {
          ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
       } else {
          ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
          TXT(", ");
          ENM(decl->SamplerView.ReturnTypeY, tgsi_type_names);
          TXT(", ");
          ENM(decl->SamplerView.ReturnTypeZ, tgsi_type_names);
          TXT(", ");
          ENM(decl->SamplerView.ReturnTypeW, tgsi_type_names);
       }
    }

    if (decl->Declaration.Interpolate) {
       if (iter->processor.Processor == TGSI_PROCESSOR_FRAGMENT &&
           decl->Declaration.File == TGSI_FILE_INPUT)
       {
          TXT( ", " );
          ENM( decl->Interp.Interpolate, tgsi_interpolate_names );
       }

       if (decl->Interp.Centroid) {
          TXT( ", CENTROID" );
       }

       if (decl->Interp.CylindricalWrap) {
          TXT(", CYLWRAP_");
          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_X) {
             CHR('X');
          }
          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Y) {
             CHR('Y');
          }
          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Z) {
             CHR('Z');
          }
          if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_W) {
             CHR('W');
          }
       }
    }

    if (decl->Declaration.Invariant) {
       TXT( ", INVARIANT" );
    }


    if (decl->Declaration.File == TGSI_FILE_IMMEDIATE_ARRAY) {
       unsigned i;
       char range_indent[4];

       TXT(" {");

       if (decl->Range.Last < 10)
          range_indent[0] = '\0';
       else if (decl->Range.Last < 100) {
          range_indent[0] = ' ';
          range_indent[1] = '\0';
       } else if (decl->Range.Last < 1000) {
          range_indent[0] = ' ';
          range_indent[1] = ' ';
          range_indent[2] = '\0';
       } else {
          range_indent[0] = ' ';
          range_indent[1] = ' ';
          range_indent[2] = ' ';
          range_indent[3] = '\0';
       }

       dump_imm_data(iter, decl->ImmediateData.u,
                     4, TGSI_IMM_FLOAT32);
       for(i = 1; i <= decl->Range.Last; ++i) {
          /* indent by strlen of:
           *   "DCL IMMX[0..1] {" */
          CHR('\n');
          TXT( "                " );
          TXT( range_indent );
          dump_imm_data(iter, decl->ImmediateData.u + i,
                        4, TGSI_IMM_FLOAT32);
       }

       TXT(" }");
    }

    EOL();

    return TRUE;
 }

 void
 tgsi_dump_declaration(
    const struct tgsi_full_declaration *decl )
 {
    struct dump_ctx ctx;

    ctx.dump_printf = dump_ctx_printf;

    iter_declaration( &ctx.iter, (struct tgsi_full_declaration *)decl );
 }

 static boolean
 iter_property(
    struct tgsi_iterate_context *iter,
    struct tgsi_full_property *prop )
 {
    int i;
    struct dump_ctx *ctx = (struct dump_ctx *)iter;

    TXT( "PROPERTY " );
    ENM(prop->Property.PropertyName, tgsi_property_names);

    if (prop->Property.NrTokens > 1)
       TXT(" ");

    for (i = 0; i < prop->Property.NrTokens - 1; ++i) {
       switch (prop->Property.PropertyName) {
       case TGSI_PROPERTY_GS_INPUT_PRIM:
       case TGSI_PROPERTY_GS_OUTPUT_PRIM:
          ENM(prop->u[i].Data, tgsi_primitive_names);
          break;
       case TGSI_PROPERTY_FS_COORD_ORIGIN:
          ENM(prop->u[i].Data, tgsi_fs_coord_origin_names);
          break;
       case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
          ENM(prop->u[i].Data, tgsi_fs_coord_pixel_center_names);
          break;
       default:
          SID( prop->u[i].Data );
          break;
       }
       if (i < prop->Property.NrTokens - 2)
          TXT( ", " );
    }
    EOL();

    return TRUE;
 }

 void tgsi_dump_property(
    const struct tgsi_full_property *prop )
 {
    struct dump_ctx ctx;

    ctx.dump_printf = dump_ctx_printf;

    iter_property( &ctx.iter, (struct tgsi_full_property *)prop );
 }

 static boolean
 iter_immediate(
    struct tgsi_iterate_context *iter,
    struct tgsi_full_immediate *imm )
 {
    struct dump_ctx *ctx = (struct dump_ctx *) iter;

    TXT( "IMM " );
    ENM( imm->Immediate.DataType, tgsi_immediate_type_names );

    dump_imm_data(iter, imm->u, imm->Immediate.NrTokens - 1,
                  imm->Immediate.DataType);

    EOL();

    return TRUE;
 }

 void
 tgsi_dump_immediate(
    const struct tgsi_full_immediate *imm )
 {
    struct dump_ctx ctx;

    ctx.dump_printf = dump_ctx_printf;

    iter_immediate( &ctx.iter, (struct tgsi_full_immediate *)imm );
 }

 static boolean
 iter_instruction(
    struct tgsi_iterate_context *iter,
    struct tgsi_full_instruction *inst )
 {
    struct dump_ctx *ctx = (struct dump_ctx *) iter;
    uint instno = ctx->instno++;
    const struct tgsi_opcode_info *info = tgsi_get_opcode_info( inst->Instruction.Opcode );
    uint i;
    boolean first_reg = TRUE;

    INSTID( instno );
    TXT( ": " );

    ctx->indent -= info->pre_dedent;
    for(i = 0; (int)i < ctx->indent; ++i)
       TXT( "  " );
    ctx->indent += info->post_indent;

    if (inst->Instruction.Predicate) {
       CHR( '(' );

       if (inst->Predicate.Negate)
          CHR( '!' );

       TXT( "PRED[" );
       SID( inst->Predicate.Index );
       CHR( ']' );

       if (inst->Predicate.SwizzleX != TGSI_SWIZZLE_X ||
           inst->Predicate.SwizzleY != TGSI_SWIZZLE_Y ||
           inst->Predicate.SwizzleZ != TGSI_SWIZZLE_Z ||
           inst->Predicate.SwizzleW != TGSI_SWIZZLE_W) {
          CHR( '.' );
          ENM( inst->Predicate.SwizzleX, tgsi_swizzle_names );
          ENM( inst->Predicate.SwizzleY, tgsi_swizzle_names );
          ENM( inst->Predicate.SwizzleZ, tgsi_swizzle_names );
          ENM( inst->Predicate.SwizzleW, tgsi_swizzle_names );
       }

       TXT( ") " );
    }

    TXT( info->mnemonic );

    switch (inst->Instruction.Saturate) {
    case TGSI_SAT_NONE:
       break;
    case TGSI_SAT_ZERO_ONE:
       TXT( "_SAT" );
       break;
    case TGSI_SAT_MINUS_PLUS_ONE:
       TXT( "_SATNV" );
       break;
    default:
       assert( 0 );
    }

    for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
       const struct tgsi_full_dst_register *dst = &inst->Dst[i];

       if (!first_reg)
          CHR( ',' );
       CHR( ' ' );

       _dump_register_dst( ctx, dst );
       _dump_writemask( ctx, dst->Register.WriteMask );

       first_reg = FALSE;
    }

    for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
       const struct tgsi_full_src_register *src = &inst->Src[i];

       if (!first_reg)
          CHR( ',' );
       CHR( ' ' );

       if (src->Register.Negate)
          CHR( '-' );
       if (src->Register.Absolute)
          CHR( '|' );

       _dump_register_src(ctx, src);

       if (src->Register.SwizzleX != TGSI_SWIZZLE_X ||
           src->Register.SwizzleY != TGSI_SWIZZLE_Y ||
           src->Register.SwizzleZ != TGSI_SWIZZLE_Z ||
           src->Register.SwizzleW != TGSI_SWIZZLE_W) {
          CHR( '.' );
          ENM( src->Register.SwizzleX, tgsi_swizzle_names );
          ENM( src->Register.SwizzleY, tgsi_swizzle_names );
          ENM( src->Register.SwizzleZ, tgsi_swizzle_names );
          ENM( src->Register.SwizzleW, tgsi_swizzle_names );
       }

       if (src->Register.Absolute)
          CHR( '|' );

       first_reg = FALSE;
    }

    if (inst->Instruction.Texture) {
       TXT( ", " );
       ENM( inst->Texture.Texture, tgsi_texture_names );
       for (i = 0; i < inst->Texture.NumOffsets; i++) {
          TXT( ", " );
          ENM( inst->TexOffsets[i].File, tgsi_file_names);
          CHR( '[' );
          SID( inst->TexOffsets[i].Index );
          CHR( ']' );
          CHR( '.' );
          ENM( inst->TexOffsets[i].SwizzleX, tgsi_swizzle_names);
          ENM( inst->TexOffsets[i].SwizzleY, tgsi_swizzle_names);
          ENM( inst->TexOffsets[i].SwizzleZ, tgsi_swizzle_names);
       }
    }

    switch (inst->Instruction.Opcode) {
    case TGSI_OPCODE_IF:
    case TGSI_OPCODE_ELSE:
    case TGSI_OPCODE_BGNLOOP:
    case TGSI_OPCODE_ENDLOOP:
    case TGSI_OPCODE_CAL:
       TXT( " :" );
       UID( inst->Label.Label );
       break;
    }

    /* update indentation */
    if (inst->Instruction.Opcode == TGSI_OPCODE_IF ||
        inst->Instruction.Opcode == TGSI_OPCODE_ELSE ||
        inst->Instruction.Opcode == TGSI_OPCODE_BGNLOOP) {
       ctx->indentation += indent_spaces;
    }

    EOL();

    return TRUE;
 }

 void
 tgsi_dump_instruction(
    const struct tgsi_full_instruction *inst,
    uint instno )
 {
    struct dump_ctx ctx;

    ctx.instno = instno;
    ctx.indent = 0;
    ctx.dump_printf = dump_ctx_printf;
    ctx.indentation = 0;

    iter_instruction( &ctx.iter, (struct tgsi_full_instruction *)inst );
 }

 static boolean
 prolog(
    struct tgsi_iterate_context *iter )
 {
    struct dump_ctx *ctx = (struct dump_ctx *) iter;
    ENM( iter->processor.Processor, tgsi_processor_type_names );
    EOL();
    return TRUE;
 }

 void
 tgsi_dump(
    const struct tgsi_token *tokens,
    uint flags )
 {
    struct dump_ctx ctx;

    ctx.iter.prolog = prolog;
    ctx.iter.iterate_instruction = iter_instruction;
    ctx.iter.iterate_declaration = iter_declaration;
    ctx.iter.iterate_immediate = iter_immediate;
    ctx.iter.iterate_property = iter_property;
    ctx.iter.epilog = NULL;

    ctx.instno = 0;
    ctx.indent = 0;
    ctx.dump_printf = dump_ctx_printf;
    ctx.indentation = 0;

    tgsi_iterate_shader( tokens, &ctx.iter );
 }

 struct str_dump_ctx
 {
    struct dump_ctx base;
    char *str;
    char *ptr;
    int left;
 };

 static void
 str_dump_ctx_printf(struct dump_ctx *ctx, const char *format, ...)
 {
    struct str_dump_ctx *sctx = (struct str_dump_ctx *)ctx;

    if(sctx->left > 1) {
       int written;
       va_list ap;
       va_start(ap, format);
       written = util_vsnprintf(sctx->ptr, sctx->left, format, ap);
       va_end(ap);

       /* Some complicated logic needed to handle the return value of
        * vsnprintf:
        */
       if (written > 0) {
          written = MIN2(sctx->left, written);
          sctx->ptr += written;
          sctx->left -= written;
       }
    }
 }

 void
 tgsi_dump_str(
    const struct tgsi_token *tokens,
    uint flags,
    char *str,
    size_t size)
 {
    struct str_dump_ctx ctx;

    ctx.base.iter.prolog = prolog;
    ctx.base.iter.iterate_instruction = iter_instruction;
    ctx.base.iter.iterate_declaration = iter_declaration;
    ctx.base.iter.iterate_immediate = iter_immediate;
    ctx.base.iter.iterate_property = iter_property;
    ctx.base.iter.epilog = NULL;

    ctx.base.instno = 0;
    ctx.base.indent = 0;
    ctx.base.dump_printf = &str_dump_ctx_printf;
    ctx.base.indentation = 0;

    ctx.str = str;
    ctx.str[0] = 0;
    ctx.ptr = str;
    ctx.left = (int)size;

    tgsi_iterate_shader( tokens, &ctx.base.iter );
 }
	/**************************************************************************
	*
	* Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
	* All Rights Reserved.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the
	* "Software"), to deal in the Software without restriction, including
	* without limitation the rights to use, copy, modify, merge, publish,
	* distribute, sub license, and/or sell copies of the Software, and to
	* permit persons to whom the Software is furnished to do so, subject to
	* the following conditions:
	*
	* The above copyright notice and this permission notice (including the
	* next paragraph) shall be included in all copies or substantial portions
	* of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
	* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*
	**************************************************************************/

	#include "util/u_debug.h"
	#include "util/u_string.h"
	#include "util/u_math.h"
	#include "util/u_memory.h"
	#include "tgsi_dump.h"
	#include "tgsi_info.h"
	#include "tgsi_iterate.h"
	#include "tgsi_strings.h"


	/** Number of spaces to indent for IF/LOOP/etc */
	static const int indent_spaces = 3;


	struct dump_ctx
	{
	struct tgsi_iterate_context iter;

	uint instno;
	int indent;

	uint indentation;

	void (dump_printf)(struct dump_ctx ctx, const char *format, ...);
	};

	static void
	dump_ctx_printf(struct dump_ctx ctx, const char format, ...)
	{
	va_list ap;
	(void)ctx;
	va_start(ap, format);
	_debug_vprintf(format, ap);
	va_end(ap);
	}

	static void
	dump_enum(
	struct dump_ctx *ctx,
	uint e,
	const char **enums,
	uint enum_count )
	{
	if (e >= enum_count)
	ctx->dump_printf( ctx, "%u", e );
	else
	ctx->dump_printf( ctx, "%s", enums[e] );
	}

	#define EOL() ctx->dump_printf( ctx, "\n" )
	#define TXT(S) ctx->dump_printf( ctx, "%s", S )
	#define CHR(C) ctx->dump_printf( ctx, "%c", C )
	#define UIX(I) ctx->dump_printf( ctx, "0x%x", I )
	#define UID(I) ctx->dump_printf( ctx, "%u", I )
	#define INSTID(I) ctx->dump_printf( ctx, "% 3u", I )
	#define SID(I) ctx->dump_printf( ctx, "%d", I )
	#define FLT(F) ctx->dump_printf( ctx, "%10.4f", F )
	#define ENM(E,ENUMS) dump_enum( ctx, E, ENUMS, sizeof( ENUMS ) / sizeof( *ENUMS ) )

	const char *
	tgsi_swizzle_names[4] =
	{
	"x",
	"y",
	"z",
	"w"
	};

	static void
	_dump_register_src(
	struct dump_ctx *ctx,
	const struct tgsi_full_src_register *src )
	{
	ENM(src->Register.File, tgsi_file_names);
	if (src->Register.Dimension) {
	if (src->Dimension.Indirect) {
	CHR( '[' );
	ENM( src->DimIndirect.File, tgsi_file_names );
	CHR( '[' );
	SID( src->DimIndirect.Index );
	TXT( "]." );
	ENM( src->DimIndirect.SwizzleX, tgsi_swizzle_names );
	if (src->Dimension.Index != 0) {
	if (src->Dimension.Index > 0)
	CHR( '+' );
	SID( src->Dimension.Index );
	}
	CHR( ']' );
	} else {
	CHR('[');
	SID(src->Dimension.Index);
	CHR(']');
	}
	}
	if (src->Register.Indirect) {
	CHR( '[' );
	ENM( src->Indirect.File, tgsi_file_names );
	CHR( '[' );
	SID( src->Indirect.Index );
	TXT( "]." );
	ENM( src->Indirect.SwizzleX, tgsi_swizzle_names );
	if (src->Register.Index != 0) {
	if (src->Register.Index > 0)
	CHR( '+' );
	SID( src->Register.Index );
	}
	CHR( ']' );
	} else {
	CHR( '[' );
	SID( src->Register.Index );
	CHR( ']' );
	}
	}


	static void
	_dump_register_dst(
	struct dump_ctx *ctx,
	const struct tgsi_full_dst_register *dst )
	{
	ENM(dst->Register.File, tgsi_file_names);
	if (dst->Register.Dimension) {
	if (dst->Dimension.Indirect) {
	CHR( '[' );
	ENM( dst->DimIndirect.File, tgsi_file_names );
	CHR( '[' );
	SID( dst->DimIndirect.Index );
	TXT( "]." );
	ENM( dst->DimIndirect.SwizzleX, tgsi_swizzle_names );
	if (dst->Dimension.Index != 0) {
	if (dst->Dimension.Index > 0)
	CHR( '+' );
	SID( dst->Dimension.Index );
	}
	CHR( ']' );
	} else {
	CHR('[');
	SID(dst->Dimension.Index);
	CHR(']');
	}
	}
	if (dst->Register.Indirect) {
	CHR( '[' );
	ENM( dst->Indirect.File, tgsi_file_names );
	CHR( '[' );
	SID( dst->Indirect.Index );
	TXT( "]." );
	ENM( dst->Indirect.SwizzleX, tgsi_swizzle_names );
	if (dst->Register.Index != 0) {
	if (dst->Register.Index > 0)
	CHR( '+' );
	SID( dst->Register.Index );
	}
	CHR( ']' );
	} else {
	CHR( '[' );
	SID( dst->Register.Index );
	CHR( ']' );
	}
	}
	static void
	_dump_writemask(
	struct dump_ctx *ctx,
	uint writemask )
	{
	if (writemask != TGSI_WRITEMASK_XYZW) {
	CHR( '.' );
	if (writemask & TGSI_WRITEMASK_X)
	CHR( 'x' );
	if (writemask & TGSI_WRITEMASK_Y)
	CHR( 'y' );
	if (writemask & TGSI_WRITEMASK_Z)
	CHR( 'z' );
	if (writemask & TGSI_WRITEMASK_W)
	CHR( 'w' );
	}
	}

	static void
	dump_imm_data(struct tgsi_iterate_context *iter,
	union tgsi_immediate_data *data,
	unsigned num_tokens,
	unsigned data_type)
	{
	struct dump_ctx ctx = (struct dump_ctx )iter;
	unsigned i ;

	TXT( " {" );

	assert( num_tokens <= 4 );
	for (i = 0; i < num_tokens; i++) {
	switch (data_type) {
	case TGSI_IMM_FLOAT32:
	FLT( data[i].Float );
	break;
	case TGSI_IMM_UINT32:
	UID(data[i].Uint);
	break;
	case TGSI_IMM_INT32:
	SID(data[i].Int);
	break;
	default:
	assert( 0 );
	}

	if (i < num_tokens - 1)
	TXT( ", " );
	}
	TXT( "}" );
	}

	static boolean
	iter_declaration(
	struct tgsi_iterate_context *iter,
	struct tgsi_full_declaration *decl )
	{
	struct dump_ctx ctx = (struct dump_ctx )iter;

	TXT( "DCL " );

	ENM(decl->Declaration.File, tgsi_file_names);

	/* all geometry shader inputs are two dimensional */
	if (decl->Declaration.File == TGSI_FILE_INPUT &&
	iter->processor.Processor == TGSI_PROCESSOR_GEOMETRY) {
	TXT("[]");
	}

	if (decl->Declaration.Dimension) {
	CHR('[');
	SID(decl->Dim.Index2D);
	CHR(']');
	}

	CHR('[');
	SID(decl->Range.First);
	if (decl->Range.First != decl->Range.Last) {
	TXT("..");
	SID(decl->Range.Last);
	}
	CHR(']');

	_dump_writemask(
	ctx,
	decl->Declaration.UsageMask );

	if (decl->Declaration.Local)
	TXT( ", LOCAL" );

	if (decl->Declaration.Semantic) {
	TXT( ", " );
	ENM( decl->Semantic.Name, tgsi_semantic_names );
	if (decl->Semantic.Index != 0 \|\|
	decl->Semantic.Name == TGSI_SEMANTIC_GENERIC) {
	CHR( '[' );
	UID( decl->Semantic.Index );
	CHR( ']' );
	}
	}

	if (decl->Declaration.File == TGSI_FILE_RESOURCE) {
	TXT(", ");
	ENM(decl->Resource.Resource, tgsi_texture_names);
	if (decl->Resource.Writable)
	TXT(", WR");
	if (decl->Resource.Raw)
	TXT(", RAW");
	}

	if (decl->Declaration.File == TGSI_FILE_SAMPLER_VIEW) {
	TXT(", ");
	ENM(decl->SamplerView.Resource, tgsi_texture_names);
	TXT(", ");
	if ((decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeY) &&
	(decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeZ) &&
	(decl->SamplerView.ReturnTypeX == decl->SamplerView.ReturnTypeW)) {
	ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
	} else {
	ENM(decl->SamplerView.ReturnTypeX, tgsi_type_names);
	TXT(", ");
	ENM(decl->SamplerView.ReturnTypeY, tgsi_type_names);
	TXT(", ");
	ENM(decl->SamplerView.ReturnTypeZ, tgsi_type_names);
	TXT(", ");
	ENM(decl->SamplerView.ReturnTypeW, tgsi_type_names);
	}
	}

	if (decl->Declaration.Interpolate) {
	if (iter->processor.Processor == TGSI_PROCESSOR_FRAGMENT &&
	decl->Declaration.File == TGSI_FILE_INPUT)
	{
	TXT( ", " );
	ENM( decl->Interp.Interpolate, tgsi_interpolate_names );
	}

	if (decl->Interp.Centroid) {
	TXT( ", CENTROID" );
	}

	if (decl->Interp.CylindricalWrap) {
	TXT(", CYLWRAP_");
	if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_X) {
	CHR('X');
	}
	if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Y) {
	CHR('Y');
	}
	if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_Z) {
	CHR('Z');
	}
	if (decl->Interp.CylindricalWrap & TGSI_CYLINDRICAL_WRAP_W) {
	CHR('W');
	}
	}
	}

	if (decl->Declaration.Invariant) {
	TXT( ", INVARIANT" );
	}


	if (decl->Declaration.File == TGSI_FILE_IMMEDIATE_ARRAY) {
	unsigned i;
	char range_indent[4];

	TXT(" {");

	if (decl->Range.Last < 10)
	range_indent[0] = '\0';
	else if (decl->Range.Last < 100) {
	range_indent[0] = ' ';
	range_indent[1] = '\0';
	} else if (decl->Range.Last < 1000) {
	range_indent[0] = ' ';
	range_indent[1] = ' ';
	range_indent[2] = '\0';
	} else {
	range_indent[0] = ' ';
	range_indent[1] = ' ';
	range_indent[2] = ' ';
	range_indent[3] = '\0';
	}

	dump_imm_data(iter, decl->ImmediateData.u,
	4, TGSI_IMM_FLOAT32);
	for(i = 1; i <= decl->Range.Last; ++i) {
	/* indent by strlen of:
	* "DCL IMMX[0..1] {" */
	CHR('\n');
	TXT( " " );
	TXT( range_indent );
	dump_imm_data(iter, decl->ImmediateData.u + i,
	4, TGSI_IMM_FLOAT32);
	}

	TXT(" }");
	}

	EOL();

	return TRUE;
	}

	void
	tgsi_dump_declaration(
	const struct tgsi_full_declaration *decl )
	{
	struct dump_ctx ctx;

	ctx.dump_printf = dump_ctx_printf;

	iter_declaration( &ctx.iter, (struct tgsi_full_declaration *)decl );
	}

	static boolean
	iter_property(
	struct tgsi_iterate_context *iter,
	struct tgsi_full_property *prop )
	{
	int i;
	struct dump_ctx ctx = (struct dump_ctx )iter;

	TXT( "PROPERTY " );
	ENM(prop->Property.PropertyName, tgsi_property_names);

	if (prop->Property.NrTokens > 1)
	TXT(" ");

	for (i = 0; i < prop->Property.NrTokens - 1; ++i) {
	switch (prop->Property.PropertyName) {
	case TGSI_PROPERTY_GS_INPUT_PRIM:
	case TGSI_PROPERTY_GS_OUTPUT_PRIM:
	ENM(prop->u[i].Data, tgsi_primitive_names);
	break;
	case TGSI_PROPERTY_FS_COORD_ORIGIN:
	ENM(prop->u[i].Data, tgsi_fs_coord_origin_names);
	break;
	case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
	ENM(prop->u[i].Data, tgsi_fs_coord_pixel_center_names);
	break;
	default:
	SID( prop->u[i].Data );
	break;
	}
	if (i < prop->Property.NrTokens - 2)
	TXT( ", " );
	}
	EOL();

	return TRUE;
	}

	void tgsi_dump_property(
	const struct tgsi_full_property *prop )
	{
	struct dump_ctx ctx;

	ctx.dump_printf = dump_ctx_printf;

	iter_property( &ctx.iter, (struct tgsi_full_property *)prop );
	}

	static boolean
	iter_immediate(
	struct tgsi_iterate_context *iter,
	struct tgsi_full_immediate *imm )
	{
	struct dump_ctx ctx = (struct dump_ctx ) iter;

	TXT( "IMM " );
	ENM( imm->Immediate.DataType, tgsi_immediate_type_names );

	dump_imm_data(iter, imm->u, imm->Immediate.NrTokens - 1,
	imm->Immediate.DataType);

	EOL();

	return TRUE;
	}

	void
	tgsi_dump_immediate(
	const struct tgsi_full_immediate *imm )
	{
	struct dump_ctx ctx;

	ctx.dump_printf = dump_ctx_printf;

	iter_immediate( &ctx.iter, (struct tgsi_full_immediate *)imm );
	}

	static boolean
	iter_instruction(
	struct tgsi_iterate_context *iter,
	struct tgsi_full_instruction *inst )
	{
	struct dump_ctx ctx = (struct dump_ctx ) iter;
	uint instno = ctx->instno++;
	const struct tgsi_opcode_info *info = tgsi_get_opcode_info( inst->Instruction.Opcode );
	uint i;
	boolean first_reg = TRUE;

	INSTID( instno );
	TXT( ": " );

	ctx->indent -= info->pre_dedent;
	for(i = 0; (int)i < ctx->indent; ++i)
	TXT( " " );
	ctx->indent += info->post_indent;

	if (inst->Instruction.Predicate) {
	CHR( '(' );

	if (inst->Predicate.Negate)
	CHR( '!' );

	TXT( "PRED[" );
	SID( inst->Predicate.Index );
	CHR( ']' );

	if (inst->Predicate.SwizzleX != TGSI_SWIZZLE_X \|\|
	inst->Predicate.SwizzleY != TGSI_SWIZZLE_Y \|\|
	inst->Predicate.SwizzleZ != TGSI_SWIZZLE_Z \|\|
	inst->Predicate.SwizzleW != TGSI_SWIZZLE_W) {
	CHR( '.' );
	ENM( inst->Predicate.SwizzleX, tgsi_swizzle_names );
	ENM( inst->Predicate.SwizzleY, tgsi_swizzle_names );
	ENM( inst->Predicate.SwizzleZ, tgsi_swizzle_names );
	ENM( inst->Predicate.SwizzleW, tgsi_swizzle_names );
	}

	TXT( ") " );
	}

	TXT( info->mnemonic );

	switch (inst->Instruction.Saturate) {
	case TGSI_SAT_NONE:
	break;
	case TGSI_SAT_ZERO_ONE:
	TXT( "_SAT" );
	break;
	case TGSI_SAT_MINUS_PLUS_ONE:
	TXT( "_SATNV" );
	break;
	default:
	assert( 0 );
	}

	for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
	const struct tgsi_full_dst_register *dst = &inst->Dst[i];

	if (!first_reg)
	CHR( ',' );
	CHR( ' ' );

	_dump_register_dst( ctx, dst );
	_dump_writemask( ctx, dst->Register.WriteMask );

	first_reg = FALSE;
	}

	for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
	const struct tgsi_full_src_register *src = &inst->Src[i];

	if (!first_reg)
	CHR( ',' );
	CHR( ' ' );

	if (src->Register.Negate)
	CHR( '-' );
	if (src->Register.Absolute)
	CHR( '\|' );

	_dump_register_src(ctx, src);

	if (src->Register.SwizzleX != TGSI_SWIZZLE_X \|\|
	src->Register.SwizzleY != TGSI_SWIZZLE_Y \|\|
	src->Register.SwizzleZ != TGSI_SWIZZLE_Z \|\|
	src->Register.SwizzleW != TGSI_SWIZZLE_W) {
	CHR( '.' );
	ENM( src->Register.SwizzleX, tgsi_swizzle_names );
	ENM( src->Register.SwizzleY, tgsi_swizzle_names );
	ENM( src->Register.SwizzleZ, tgsi_swizzle_names );
	ENM( src->Register.SwizzleW, tgsi_swizzle_names );
	}

	if (src->Register.Absolute)
	CHR( '\|' );

	first_reg = FALSE;
	}

	if (inst->Instruction.Texture) {
	TXT( ", " );
	ENM( inst->Texture.Texture, tgsi_texture_names );
	for (i = 0; i < inst->Texture.NumOffsets; i++) {
	TXT( ", " );
	ENM( inst->TexOffsets[i].File, tgsi_file_names);
	CHR( '[' );
	SID( inst->TexOffsets[i].Index );
	CHR( ']' );
	CHR( '.' );
	ENM( inst->TexOffsets[i].SwizzleX, tgsi_swizzle_names);
	ENM( inst->TexOffsets[i].SwizzleY, tgsi_swizzle_names);
	ENM( inst->TexOffsets[i].SwizzleZ, tgsi_swizzle_names);
	}
	}

	switch (inst->Instruction.Opcode) {
	case TGSI_OPCODE_IF:
	case TGSI_OPCODE_ELSE:
	case TGSI_OPCODE_BGNLOOP:
	case TGSI_OPCODE_ENDLOOP:
	case TGSI_OPCODE_CAL:
	TXT( " :" );
	UID( inst->Label.Label );
	break;
	}

	/* update indentation */
	if (inst->Instruction.Opcode == TGSI_OPCODE_IF \|\|
	inst->Instruction.Opcode == TGSI_OPCODE_ELSE \|\|
	inst->Instruction.Opcode == TGSI_OPCODE_BGNLOOP) {
	ctx->indentation += indent_spaces;
	}

	EOL();

	return TRUE;
	}

	void
	tgsi_dump_instruction(
	const struct tgsi_full_instruction *inst,
	uint instno )
	{
	struct dump_ctx ctx;

	ctx.instno = instno;
	ctx.indent = 0;
	ctx.dump_printf = dump_ctx_printf;
	ctx.indentation = 0;

	iter_instruction( &ctx.iter, (struct tgsi_full_instruction *)inst );
	}

	static boolean
	prolog(
	struct tgsi_iterate_context *iter )
	{
	struct dump_ctx ctx = (struct dump_ctx ) iter;
	ENM( iter->processor.Processor, tgsi_processor_type_names );
	EOL();
	return TRUE;
	}

	void
	tgsi_dump(
	const struct tgsi_token *tokens,
	uint flags )
	{
	struct dump_ctx ctx;

	ctx.iter.prolog = prolog;
	ctx.iter.iterate_instruction = iter_instruction;
	ctx.iter.iterate_declaration = iter_declaration;
	ctx.iter.iterate_immediate = iter_immediate;
	ctx.iter.iterate_property = iter_property;
	ctx.iter.epilog = NULL;

	ctx.instno = 0;
	ctx.indent = 0;
	ctx.dump_printf = dump_ctx_printf;
	ctx.indentation = 0;

	tgsi_iterate_shader( tokens, &ctx.iter );
	}

	struct str_dump_ctx
	{
	struct dump_ctx base;
	char *str;
	char *ptr;
	int left;
	};

	static void
	str_dump_ctx_printf(struct dump_ctx ctx, const char format, ...)
	{
	struct str_dump_ctx sctx = (struct str_dump_ctx )ctx;

	if(sctx->left > 1) {
	int written;
	va_list ap;
	va_start(ap, format);
	written = util_vsnprintf(sctx->ptr, sctx->left, format, ap);
	va_end(ap);

	/* Some complicated logic needed to handle the return value of
	* vsnprintf:
	*/
	if (written > 0) {
	written = MIN2(sctx->left, written);
	sctx->ptr += written;
	sctx->left -= written;
	}
	}
	}

	void
	tgsi_dump_str(
	const struct tgsi_token *tokens,
	uint flags,
	char *str,
	size_t size)
	{
	struct str_dump_ctx ctx;

	ctx.base.iter.prolog = prolog;
	ctx.base.iter.iterate_instruction = iter_instruction;
	ctx.base.iter.iterate_declaration = iter_declaration;
	ctx.base.iter.iterate_immediate = iter_immediate;
	ctx.base.iter.iterate_property = iter_property;
	ctx.base.iter.epilog = NULL;

	ctx.base.instno = 0;
	ctx.base.indent = 0;
	ctx.base.dump_printf = &str_dump_ctx_printf;
	ctx.base.indentation = 0;

	ctx.str = str;
	ctx.str[0] = 0;
	ctx.ptr = str;
	ctx.left = (int)size;

	tgsi_iterate_shader( tokens, &ctx.base.iter );
	}