xref: /third_party/mesa3d/src/gallium/frontends/d3d10umd/ShaderTGSI.c

/**************************************************************************
 *
 * Copyright 2012-2021 VMware, Inc.
 * 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 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
 * THE COPYRIGHT HOLDERS, AUTHORS 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.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 **************************************************************************/

/*
 * ShaderTGSI.c --
 *    Functions for translating shaders.
 */

#include "Debug.h"
#include "ShaderParse.h"

#include "pipe/p_state.h"
#include "tgsi/tgsi_ureg.h"
#include "tgsi/tgsi_dump.h"
#include "util/u_memory.h"

#include "ShaderDump.h"


enum dx10_opcode_format {
   OF_FLOAT,
   OF_INT,
   OF_UINT
};

struct dx10_opcode_xlate {
   D3D10_SB_OPCODE_TYPE type;
   enum dx10_opcode_format format;
   uint tgsi_opcode;
};

/* Opcodes that we have not even attempted to implement:
 */
#define TGSI_LOG_UNSUPPORTED TGSI_OPCODE_LAST

/* Opcodes which do not translate directly to a TGSI opcode, but which
 * have at least a partial implemention coded below:
 */
#define TGSI_EXPAND          (TGSI_OPCODE_LAST+1)

static struct dx10_opcode_xlate opcode_xlate[D3D10_SB_NUM_OPCODES] = {
   {D3D10_SB_OPCODE_ADD,                              OF_FLOAT, TGSI_OPCODE_ADD},
   {D3D10_SB_OPCODE_AND,                              OF_UINT,  TGSI_OPCODE_AND},
   {D3D10_SB_OPCODE_BREAK,                            OF_FLOAT, TGSI_OPCODE_BRK},
   {D3D10_SB_OPCODE_BREAKC,                           OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_CALL,                             OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_CALLC,                            OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_CASE,                             OF_UINT,  TGSI_OPCODE_CASE},
   {D3D10_SB_OPCODE_CONTINUE,                         OF_FLOAT, TGSI_OPCODE_CONT},
   {D3D10_SB_OPCODE_CONTINUEC,                        OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_CUT,                              OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DEFAULT,                          OF_FLOAT, TGSI_OPCODE_DEFAULT},
   {D3D10_SB_OPCODE_DERIV_RTX,                        OF_FLOAT, TGSI_OPCODE_DDX},
   {D3D10_SB_OPCODE_DERIV_RTY,                        OF_FLOAT, TGSI_OPCODE_DDY},
   {D3D10_SB_OPCODE_DISCARD,                          OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_DIV,                              OF_FLOAT, TGSI_OPCODE_DIV},
   {D3D10_SB_OPCODE_DP2,                              OF_FLOAT, TGSI_OPCODE_DP2},
   {D3D10_SB_OPCODE_DP3,                              OF_FLOAT, TGSI_OPCODE_DP3},
   {D3D10_SB_OPCODE_DP4,                              OF_FLOAT, TGSI_OPCODE_DP4},
   {D3D10_SB_OPCODE_ELSE,                             OF_FLOAT, TGSI_OPCODE_ELSE},
   {D3D10_SB_OPCODE_EMIT,                             OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_EMITTHENCUT,                      OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_ENDIF,                            OF_FLOAT, TGSI_OPCODE_ENDIF},
   {D3D10_SB_OPCODE_ENDLOOP,                          OF_FLOAT, TGSI_OPCODE_ENDLOOP},
   {D3D10_SB_OPCODE_ENDSWITCH,                        OF_FLOAT, TGSI_OPCODE_ENDSWITCH},
   {D3D10_SB_OPCODE_EQ,                               OF_FLOAT, TGSI_OPCODE_FSEQ},
   {D3D10_SB_OPCODE_EXP,                              OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_FRC,                              OF_FLOAT, TGSI_OPCODE_FRC},
   {D3D10_SB_OPCODE_FTOI,                             OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_FTOU,                             OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_GE,                               OF_FLOAT, TGSI_OPCODE_FSGE},
   {D3D10_SB_OPCODE_IADD,                             OF_INT,   TGSI_OPCODE_UADD},
   {D3D10_SB_OPCODE_IF,                               OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_IEQ,                              OF_INT,   TGSI_OPCODE_USEQ},
   {D3D10_SB_OPCODE_IGE,                              OF_INT,   TGSI_OPCODE_ISGE},
   {D3D10_SB_OPCODE_ILT,                              OF_INT,   TGSI_OPCODE_ISLT},
   {D3D10_SB_OPCODE_IMAD,                             OF_INT,   TGSI_OPCODE_UMAD},
   {D3D10_SB_OPCODE_IMAX,                             OF_INT,   TGSI_OPCODE_IMAX},
   {D3D10_SB_OPCODE_IMIN,                             OF_INT,   TGSI_OPCODE_IMIN},
   {D3D10_SB_OPCODE_IMUL,                             OF_INT,   TGSI_EXPAND},
   {D3D10_SB_OPCODE_INE,                              OF_INT,   TGSI_OPCODE_USNE},
   {D3D10_SB_OPCODE_INEG,                             OF_INT,   TGSI_OPCODE_INEG},
   {D3D10_SB_OPCODE_ISHL,                             OF_INT,   TGSI_OPCODE_SHL},
   {D3D10_SB_OPCODE_ISHR,                             OF_INT,   TGSI_OPCODE_ISHR},
   {D3D10_SB_OPCODE_ITOF,                             OF_INT,   TGSI_OPCODE_I2F},
   {D3D10_SB_OPCODE_LABEL,                            OF_INT,   TGSI_EXPAND},
   {D3D10_SB_OPCODE_LD,                               OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_LD_MS,                            OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_LOG,                              OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_LOOP,                             OF_FLOAT, TGSI_OPCODE_BGNLOOP},
   {D3D10_SB_OPCODE_LT,                               OF_FLOAT, TGSI_OPCODE_FSLT},
   {D3D10_SB_OPCODE_MAD,                              OF_FLOAT, TGSI_OPCODE_MAD},
   {D3D10_SB_OPCODE_MIN,                              OF_FLOAT, TGSI_OPCODE_MIN},
   {D3D10_SB_OPCODE_MAX,                              OF_FLOAT, TGSI_OPCODE_MAX},
   {D3D10_SB_OPCODE_CUSTOMDATA,                       OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_MOV,                              OF_UINT,  TGSI_OPCODE_MOV},
   {D3D10_SB_OPCODE_MOVC,                             OF_UINT,  TGSI_OPCODE_UCMP},
   {D3D10_SB_OPCODE_MUL,                              OF_FLOAT, TGSI_OPCODE_MUL},
   {D3D10_SB_OPCODE_NE,                               OF_FLOAT, TGSI_OPCODE_FSNE},
   {D3D10_SB_OPCODE_NOP,                              OF_FLOAT, TGSI_OPCODE_NOP},
   {D3D10_SB_OPCODE_NOT,                              OF_UINT,  TGSI_OPCODE_NOT},
   {D3D10_SB_OPCODE_OR,                               OF_UINT,  TGSI_OPCODE_OR},
   {D3D10_SB_OPCODE_RESINFO,                          OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_RET,                              OF_FLOAT, TGSI_OPCODE_RET},
   {D3D10_SB_OPCODE_RETC,                             OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_ROUND_NE,                         OF_FLOAT, TGSI_OPCODE_ROUND},
   {D3D10_SB_OPCODE_ROUND_NI,                         OF_FLOAT, TGSI_OPCODE_FLR},
   {D3D10_SB_OPCODE_ROUND_PI,                         OF_FLOAT, TGSI_OPCODE_CEIL},
   {D3D10_SB_OPCODE_ROUND_Z,                          OF_FLOAT, TGSI_OPCODE_TRUNC},
   {D3D10_SB_OPCODE_RSQ,                              OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE,                           OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE_C,                         OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE_C_LZ,                      OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE_L,                         OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE_D,                         OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SAMPLE_B,                         OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SQRT,                             OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_SWITCH,                           OF_UINT,  TGSI_OPCODE_SWITCH},
   {D3D10_SB_OPCODE_SINCOS,                           OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_UDIV,                             OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_ULT,                              OF_UINT,  TGSI_OPCODE_USLT},
   {D3D10_SB_OPCODE_UGE,                              OF_UINT,  TGSI_OPCODE_USGE},
   {D3D10_SB_OPCODE_UMUL,                             OF_UINT,  TGSI_EXPAND},
   {D3D10_SB_OPCODE_UMAD,                             OF_UINT,  TGSI_OPCODE_UMAD},
   {D3D10_SB_OPCODE_UMAX,                             OF_UINT,  TGSI_OPCODE_UMAX},
   {D3D10_SB_OPCODE_UMIN,                             OF_UINT,  TGSI_OPCODE_UMIN},
   {D3D10_SB_OPCODE_USHR,                             OF_UINT,  TGSI_OPCODE_USHR},
   {D3D10_SB_OPCODE_UTOF,                             OF_UINT,  TGSI_OPCODE_U2F},
   {D3D10_SB_OPCODE_XOR,                              OF_UINT,  TGSI_OPCODE_XOR},
   {D3D10_SB_OPCODE_DCL_RESOURCE,                     OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_CONSTANT_BUFFER,              OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_SAMPLER,                      OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INDEX_RANGE,                  OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_SB_OPCODE_DCL_GS_OUTPUT_PRIMITIVE_TOPOLOGY, OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_GS_INPUT_PRIMITIVE,           OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_MAX_OUTPUT_VERTEX_COUNT,      OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT,                        OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT_SGV,                    OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT_SIV,                    OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT_PS,                     OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT_PS_SGV,                 OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INPUT_PS_SIV,                 OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_OUTPUT,                       OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_OUTPUT_SGV,                   OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_OUTPUT_SIV,                   OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_TEMPS,                        OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_INDEXABLE_TEMP,               OF_FLOAT, TGSI_EXPAND},
   {D3D10_SB_OPCODE_DCL_GLOBAL_FLAGS,                 OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_SB_OPCODE_RESERVED0,                        OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_1_SB_OPCODE_LOD,                            OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_1_SB_OPCODE_GATHER4,                        OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_1_SB_OPCODE_SAMPLE_POS,                     OF_FLOAT, TGSI_LOG_UNSUPPORTED},
   {D3D10_1_SB_OPCODE_SAMPLE_INFO,                    OF_FLOAT, TGSI_LOG_UNSUPPORTED}
};

#define SHADER_MAX_TEMPS 4096
#define SHADER_MAX_INPUTS 32
#define SHADER_MAX_OUTPUTS 32
#define SHADER_MAX_CONSTS 4096
#define SHADER_MAX_RESOURCES PIPE_MAX_SHADER_SAMPLER_VIEWS
#define SHADER_MAX_SAMPLERS PIPE_MAX_SAMPLERS
#define SHADER_MAX_INDEXABLE_TEMPS 4096

struct Shader_call {
   unsigned d3d_label;
   unsigned tgsi_label_token;
};

struct Shader_label {
   unsigned d3d_label;
   unsigned tgsi_insn_no;
};

struct Shader_resource {
   uint target;   /* TGSI_TEXTURE_x */
};

struct Shader_xlate {
   struct ureg_program *ureg;

   uint vertices_in;
   uint declared_temps;

   struct ureg_dst temps[SHADER_MAX_TEMPS];
   struct ureg_dst output_depth;
   struct Shader_resource resources[SHADER_MAX_RESOURCES];
   struct ureg_src sv[SHADER_MAX_RESOURCES];
   struct ureg_src samplers[SHADER_MAX_SAMPLERS];
   struct ureg_src imms;
   struct ureg_src prim_id;

   uint temp_offset;
   uint indexable_temp_offsets[SHADER_MAX_INDEXABLE_TEMPS];

   struct {
      boolean declared;
      uint    writemask;
      uint    siv_name;
      boolean overloaded;
      struct ureg_src reg;
   } inputs[SHADER_MAX_INPUTS];

   struct {
      struct ureg_dst reg[4];
   } outputs[SHADER_MAX_OUTPUTS];

   struct {
      uint d3d;
      uint tgsi;
   } clip_distance_mapping[2], cull_distance_mapping[2];
   uint num_clip_distances_declared;
   uint num_cull_distances_declared;

   struct Shader_call *calls;
   uint num_calls;
   uint max_calls;
   struct Shader_label *labels;
   uint num_labels;
   uint max_labels;
};

static uint
translate_interpolation(D3D10_SB_INTERPOLATION_MODE interpolation)
{
   switch (interpolation) {
   case D3D10_SB_INTERPOLATION_UNDEFINED:
      assert(0);
      return TGSI_INTERPOLATE_LINEAR;

   case D3D10_SB_INTERPOLATION_CONSTANT:
      return TGSI_INTERPOLATE_CONSTANT;
   case D3D10_SB_INTERPOLATION_LINEAR:
      return TGSI_INTERPOLATE_PERSPECTIVE;
   case D3D10_SB_INTERPOLATION_LINEAR_NOPERSPECTIVE:
      return TGSI_INTERPOLATE_LINEAR;

   case D3D10_SB_INTERPOLATION_LINEAR_CENTROID:
   case D3D10_SB_INTERPOLATION_LINEAR_SAMPLE: // DX10.1
      LOG_UNSUPPORTED(TRUE);
      return TGSI_INTERPOLATE_PERSPECTIVE;

   case D3D10_SB_INTERPOLATION_LINEAR_NOPERSPECTIVE_CENTROID:
   case D3D10_SB_INTERPOLATION_LINEAR_NOPERSPECTIVE_SAMPLE: // DX10.1
      LOG_UNSUPPORTED(TRUE);
      return TGSI_INTERPOLATE_LINEAR;
   }

   assert(0);
   return TGSI_INTERPOLATE_LINEAR;
}

static uint
translate_system_name(D3D10_SB_NAME name)
{
   switch (name) {
   case D3D10_SB_NAME_UNDEFINED:
      assert(0);                /* should not happen */
      return TGSI_SEMANTIC_GENERIC;
   case D3D10_SB_NAME_POSITION:
      return TGSI_SEMANTIC_POSITION;
   case D3D10_SB_NAME_CLIP_DISTANCE:
   case D3D10_SB_NAME_CULL_DISTANCE:
      return TGSI_SEMANTIC_CLIPDIST;
   case D3D10_SB_NAME_PRIMITIVE_ID:
      return TGSI_SEMANTIC_PRIMID;
   case D3D10_SB_NAME_INSTANCE_ID:
      return TGSI_SEMANTIC_INSTANCEID;
   case D3D10_SB_NAME_VERTEX_ID:
      return TGSI_SEMANTIC_VERTEXID_NOBASE;
   case D3D10_SB_NAME_VIEWPORT_ARRAY_INDEX:
      return TGSI_SEMANTIC_VIEWPORT_INDEX;
   case D3D10_SB_NAME_RENDER_TARGET_ARRAY_INDEX:
      return TGSI_SEMANTIC_LAYER;
   case D3D10_SB_NAME_IS_FRONT_FACE:
      return TGSI_SEMANTIC_FACE;
   case D3D10_SB_NAME_SAMPLE_INDEX:
      LOG_UNSUPPORTED(TRUE);
      return TGSI_SEMANTIC_GENERIC;
   }

   assert(0);
   return TGSI_SEMANTIC_GENERIC;
}

static uint
translate_semantic_index(struct Shader_xlate *sx,
                         D3D10_SB_NAME name,
                         const struct Shader_dst_operand *operand)
{
   unsigned idx;
   switch (name) {
   case D3D10_SB_NAME_CLIP_DISTANCE:
   case D3D10_SB_NAME_CULL_DISTANCE:
      if (sx->clip_distance_mapping[0].d3d == operand->base.index[0].imm) {
         idx = sx->clip_distance_mapping[0].tgsi;
      } else {
         assert(sx->clip_distance_mapping[1].d3d == operand->base.index[0].imm);
         idx = sx->clip_distance_mapping[1].tgsi;
      }
      break;
/*   case D3D10_SB_NAME_CULL_DISTANCE:
      if (sx->cull_distance_mapping[0].d3d == operand->base.index[0].imm) {
         idx = sx->cull_distance_mapping[0].tgsi;
      } else {
         assert(sx->cull_distance_mapping[1].d3d == operand->base.index[0].imm);
         idx = sx->cull_distance_mapping[1].tgsi;
      }
      break;*/
   default:
      idx = 0;
   }
   return idx;
}

static enum tgsi_return_type
trans_dcl_ret_type(D3D10_SB_RESOURCE_RETURN_TYPE d3drettype) {
   switch (d3drettype) {
   case D3D10_SB_RETURN_TYPE_UNORM:
      return TGSI_RETURN_TYPE_UNORM;
   case D3D10_SB_RETURN_TYPE_SNORM:
      return TGSI_RETURN_TYPE_SNORM;
   case D3D10_SB_RETURN_TYPE_SINT:
      return TGSI_RETURN_TYPE_SINT;
   case D3D10_SB_RETURN_TYPE_UINT:
      return TGSI_RETURN_TYPE_UINT;
   case D3D10_SB_RETURN_TYPE_FLOAT:
      return TGSI_RETURN_TYPE_FLOAT;
   case D3D10_SB_RETURN_TYPE_MIXED:
   default:
      LOG_UNSUPPORTED(TRUE);
      return TGSI_RETURN_TYPE_FLOAT;
   }
}

static void
declare_vertices_in(struct Shader_xlate *sx,
                    unsigned in)
{
   /* Make sure vertices_in is consistent with input primitive
    * and other input declarations.
    */
   if (sx->vertices_in) {
      assert(sx->vertices_in == in);
   } else {
      sx->vertices_in = in;
   }
}

struct swizzle_mapping {
   unsigned x;
   unsigned y;
   unsigned z;
   unsigned w;
};

/* mapping of writmask to swizzles */
static const struct swizzle_mapping writemask_to_swizzle[] = {
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_X, TGSI_SWIZZLE_X, TGSI_SWIZZLE_X }, //TGSI_WRITEMASK_NONE
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_X, TGSI_SWIZZLE_X, TGSI_SWIZZLE_X }, //TGSI_WRITEMASK_X
   { TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y }, //TGSI_WRITEMASK_Y
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y }, //TGSI_WRITEMASK_XY
   { TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z }, //TGSI_WRITEMASK_Z
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_X, TGSI_SWIZZLE_Z }, //TGSI_WRITEMASK_XZ
   { TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z }, //TGSI_WRITEMASK_YZ
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_X }, //TGSI_WRITEMASK_XYZ
   { TGSI_SWIZZLE_W, TGSI_SWIZZLE_W, TGSI_SWIZZLE_W, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_W
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_W, TGSI_SWIZZLE_X, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_XW
   { TGSI_SWIZZLE_Y, TGSI_SWIZZLE_W, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_YW
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_W, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_XYW
   { TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_ZW
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_XZW
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_YZW
   { TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W }, //TGSI_WRITEMASK_XYZW
};

static struct ureg_src
swizzle_reg(struct ureg_src src, uint writemask,
            unsigned siv_name)
{
   switch (siv_name) {
   case D3D10_SB_NAME_PRIMITIVE_ID:
   case D3D10_SB_NAME_INSTANCE_ID:
   case D3D10_SB_NAME_VERTEX_ID:
   case D3D10_SB_NAME_VIEWPORT_ARRAY_INDEX:
   case D3D10_SB_NAME_RENDER_TARGET_ARRAY_INDEX:
   case D3D10_SB_NAME_IS_FRONT_FACE:
      return ureg_scalar(src, TGSI_SWIZZLE_X);
   default: {
      const struct swizzle_mapping *swizzle =
         &writemask_to_swizzle[writemask];
      return ureg_swizzle(src, swizzle->x, swizzle->y,
                          swizzle->z, swizzle->w);
   }
   }
}

static void
dcl_base_output(struct Shader_xlate *sx,
                struct ureg_program *ureg,
                struct ureg_dst reg,
                const struct Shader_dst_operand *operand)
{
   unsigned writemask =
      operand->mask >> D3D10_SB_OPERAND_4_COMPONENT_MASK_SHIFT;
   unsigned idx = operand->base.index[0].imm;
   unsigned i;

   if (!writemask) {
      sx->outputs[idx].reg[0] = reg;
      sx->outputs[idx].reg[1] = reg;
      sx->outputs[idx].reg[2] = reg;
      sx->outputs[idx].reg[3] = reg;
      return;
   }

   for (i = 0; i < 4; ++i) {
      unsigned mask = 1 << i;
      if ((writemask & mask)) {
         sx->outputs[idx].reg[i] = reg;
      }
   }
}

static void
dcl_base_input(struct Shader_xlate *sx,
               struct ureg_program *ureg,
               const struct Shader_dst_operand *operand,
               struct ureg_src dcl_reg,
               uint index,
               uint siv_name)
{
   unsigned writemask =
      operand->mask >> D3D10_SB_OPERAND_4_COMPONENT_MASK_SHIFT;

   if (sx->inputs[index].declared && !sx->inputs[index].overloaded) {
      struct ureg_dst temp = ureg_DECL_temporary(sx->ureg);

      ureg_MOV(ureg,
               ureg_writemask(temp, sx->inputs[index].writemask),
               swizzle_reg(sx->inputs[index].reg, sx->inputs[index].writemask,
                           sx->inputs[index].siv_name));
      ureg_MOV(ureg, ureg_writemask(temp, writemask),
               swizzle_reg(dcl_reg, writemask, siv_name));
      sx->inputs[index].reg = ureg_src(temp);
      sx->inputs[index].overloaded = TRUE;
      sx->inputs[index].writemask |= writemask;
   } else if (sx->inputs[index].overloaded) {
      struct ureg_dst temp = ureg_dst(sx->inputs[index].reg);
      ureg_MOV(ureg, ureg_writemask(temp, writemask),
               swizzle_reg(dcl_reg, writemask, siv_name));
      sx->inputs[index].writemask |= writemask;
   } else {
      assert(!sx->inputs[index].declared);

      sx->inputs[index].reg = dcl_reg;
      sx->inputs[index].declared = TRUE;
      sx->inputs[index].writemask = writemask;
      sx->inputs[index].siv_name = siv_name;
   }
}

static void
dcl_vs_input(struct Shader_xlate *sx,
             struct ureg_program *ureg,
             const struct Shader_dst_operand *dst)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 1);
   assert(dst->base.index[0].imm < SHADER_MAX_INPUTS);

   reg = ureg_DECL_vs_input(ureg, dst->base.index[0].imm);

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[0].imm,
                  D3D10_SB_NAME_UNDEFINED);
}

static void
dcl_gs_input(struct Shader_xlate *sx,
             struct ureg_program *ureg,
             const struct Shader_dst_operand *dst)
{
   if (dst->base.index_dim == 2) {
      assert(dst->base.index[1].imm < SHADER_MAX_INPUTS);

      declare_vertices_in(sx, dst->base.index[0].imm);

      /* XXX: Implement declaration masks in gallium.
       */
      if (!sx->inputs[dst->base.index[1].imm].reg.File) {
         struct ureg_src reg =
            ureg_DECL_input(ureg,
                            TGSI_SEMANTIC_GENERIC,
                            dst->base.index[1].imm,
                            0, 1);
         dcl_base_input(sx, ureg, dst, reg, dst->base.index[1].imm,
                        D3D10_SB_NAME_UNDEFINED);
      }
   } else {
      assert(dst->base.type == D3D10_SB_OPERAND_TYPE_INPUT_PRIMITIVEID);
      assert(dst->base.index_dim == 0);

      sx->prim_id = ureg_DECL_system_value(ureg, TGSI_SEMANTIC_PRIMID, 0);
   }
}

static void
dcl_sgv_input(struct Shader_xlate *sx,
              struct ureg_program *ureg,
              const struct Shader_dst_operand *dst,
              uint dcl_siv_name)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 1);
   assert(dst->base.index[0].imm < SHADER_MAX_INPUTS);

   reg = ureg_DECL_system_value(ureg, translate_system_name(dcl_siv_name), 0);

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[0].imm,
                  dcl_siv_name);
}

static void
dcl_siv_input(struct Shader_xlate *sx,
              struct ureg_program *ureg,
              const struct Shader_dst_operand *dst,
              uint dcl_siv_name)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 2);
   assert(dst->base.index[1].imm < SHADER_MAX_INPUTS);

   declare_vertices_in(sx, dst->base.index[0].imm);

   reg = ureg_DECL_input(ureg,
                         translate_system_name(dcl_siv_name), 0,
                         0, 1);

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[1].imm,
                  dcl_siv_name);
}

static void
dcl_ps_input(struct Shader_xlate *sx,
             struct ureg_program *ureg,
             const struct Shader_dst_operand *dst,
             uint dcl_in_ps_interp)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 1);
   assert(dst->base.index[0].imm < SHADER_MAX_INPUTS);

   reg = ureg_DECL_fs_input(ureg,
                            TGSI_SEMANTIC_GENERIC,
                            dst->base.index[0].imm,
                            translate_interpolation(dcl_in_ps_interp));

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[0].imm,
                  D3D10_SB_NAME_UNDEFINED);
}

static void
dcl_ps_sgv_input(struct Shader_xlate *sx,
                 struct ureg_program *ureg,
                 const struct Shader_dst_operand *dst,
                 uint dcl_siv_name)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 1);
   assert(dst->base.index[0].imm < SHADER_MAX_INPUTS);

   if (dcl_siv_name == D3D10_SB_NAME_POSITION) {
      ureg_property(ureg,
                    TGSI_PROPERTY_FS_COORD_ORIGIN,
                    TGSI_FS_COORD_ORIGIN_UPPER_LEFT);
      ureg_property(ureg,
                    TGSI_PROPERTY_FS_COORD_PIXEL_CENTER,
                    TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER);
   }

   reg = ureg_DECL_fs_input(ureg,
                            translate_system_name(dcl_siv_name),
                            0,
                            TGSI_INTERPOLATE_CONSTANT);

   if (dcl_siv_name == D3D10_SB_NAME_IS_FRONT_FACE) {
      /* We need to map gallium's front_face to the one expected
       * by D3D10 */
      struct ureg_dst tmp = ureg_DECL_temporary(ureg);

      tmp = ureg_writemask(tmp, TGSI_WRITEMASK_X);

      ureg_CMP(ureg, tmp, reg,
               ureg_imm1i(ureg, 0), ureg_imm1i(ureg, -1));

      reg = ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X);
   }

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[0].imm,
                  dcl_siv_name);
}

static void
dcl_ps_siv_input(struct Shader_xlate *sx,
                 struct ureg_program *ureg,
                 const struct Shader_dst_operand *dst,
                 uint dcl_siv_name, uint dcl_in_ps_interp)
{
   struct ureg_src reg;
   assert(dst->base.index_dim == 1);
   assert(dst->base.index[0].imm < SHADER_MAX_INPUTS);

   reg = ureg_DECL_fs_input(ureg,
                            translate_system_name(dcl_siv_name),
                            0,
                            translate_interpolation(dcl_in_ps_interp));

   if (dcl_siv_name == D3D10_SB_NAME_POSITION) {
      /* D3D10 expects reciprocal of interpolated 1/w as 4th component,
       * gallium/GL just interpolated 1/w */
      struct ureg_dst tmp = ureg_DECL_temporary(ureg);

      ureg_MOV(ureg, tmp, reg);
      ureg_RCP(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_W),
               ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_W));
      reg = ureg_src(tmp);
   }

   dcl_base_input(sx, ureg, dst, reg, dst->base.index[0].imm,
                  dcl_siv_name);
}

static struct ureg_src
translate_relative_operand(struct Shader_xlate *sx,
                           const struct Shader_relative_operand *operand)
{
   struct ureg_src reg;

   switch (operand->type) {
   case D3D10_SB_OPERAND_TYPE_TEMP:
      assert(operand->index[0].imm < SHADER_MAX_TEMPS);

      reg = ureg_src(sx->temps[sx->temp_offset + operand->index[0].imm]);
      break;

   case D3D10_SB_OPERAND_TYPE_INPUT_PRIMITIVEID:
      reg = sx->prim_id;
      break;

   case D3D10_SB_OPERAND_TYPE_INDEXABLE_TEMP:
      assert(operand->index[1].imm < SHADER_MAX_TEMPS);

      reg = ureg_src(sx->temps[sx->indexable_temp_offsets[operand->index[0].imm] +
            operand->index[1].imm]);
      break;

   case D3D10_SB_OPERAND_TYPE_INPUT:
   case D3D10_SB_OPERAND_TYPE_OUTPUT:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE32:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE64:
   case D3D10_SB_OPERAND_TYPE_SAMPLER:
   case D3D10_SB_OPERAND_TYPE_RESOURCE:
   case D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE_CONSTANT_BUFFER:
   case D3D10_SB_OPERAND_TYPE_LABEL:
   case D3D10_SB_OPERAND_TYPE_OUTPUT_DEPTH:
   case D3D10_SB_OPERAND_TYPE_NULL:
   case D3D10_SB_OPERAND_TYPE_RASTERIZER:
   case D3D10_SB_OPERAND_TYPE_OUTPUT_COVERAGE_MASK:
      LOG_UNSUPPORTED(TRUE);
      reg = ureg_src(ureg_DECL_temporary(sx->ureg));
      break;

   default:
      assert(0);                /* should never happen */
      reg = ureg_src(ureg_DECL_temporary(sx->ureg));
   }

   reg = ureg_scalar(reg, operand->comp);
   return reg;
}

static struct ureg_dst
translate_operand(struct Shader_xlate *sx,
                  const struct Shader_operand *operand,
                  unsigned writemask)
{
   struct ureg_dst reg;

   switch (operand->type) {
   case D3D10_SB_OPERAND_TYPE_TEMP:
      assert(operand->index_dim == 1);
      assert(operand->index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->index[0].imm < SHADER_MAX_TEMPS);

      reg = sx->temps[sx->temp_offset + operand->index[0].imm];
      break;

   case D3D10_SB_OPERAND_TYPE_OUTPUT:
      assert(operand->index_dim == 1);
      assert(operand->index[0].imm < SHADER_MAX_OUTPUTS);

      if (operand->index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32) {
         if (!writemask) {
            reg = sx->outputs[operand->index[0].imm].reg[0];
         } else {
            unsigned i;
            for (i = 0; i < 4; ++i) {
               unsigned mask = 1 << i;
               if ((writemask & mask)) {
                  reg = sx->outputs[operand->index[0].imm].reg[i];
                  break;
               }
            }
         }
      } else {
         struct ureg_src addr =
            translate_relative_operand(sx, &operand->index[0].rel);
         assert(operand->index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE);
         reg = ureg_dst_indirect(sx->outputs[operand->index[0].imm].reg[0], addr);
      }
      break;

   case D3D10_SB_OPERAND_TYPE_OUTPUT_DEPTH:
      assert(operand->index_dim == 0);

      reg = sx->output_depth;
      break;

   case D3D10_SB_OPERAND_TYPE_INPUT_PRIMITIVEID:
      assert(operand->index_dim == 0);

      reg = ureg_dst(sx->prim_id);
      break;

   case D3D10_SB_OPERAND_TYPE_INPUT:
   case D3D10_SB_OPERAND_TYPE_INDEXABLE_TEMP:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE32:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE64:
   case D3D10_SB_OPERAND_TYPE_SAMPLER:
   case D3D10_SB_OPERAND_TYPE_RESOURCE:
   case D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER:
   case D3D10_SB_OPERAND_TYPE_IMMEDIATE_CONSTANT_BUFFER:
   case D3D10_SB_OPERAND_TYPE_LABEL:
   case D3D10_SB_OPERAND_TYPE_NULL:
   case D3D10_SB_OPERAND_TYPE_RASTERIZER:
   case D3D10_SB_OPERAND_TYPE_OUTPUT_COVERAGE_MASK:
      /* XXX: Translate more operands types.
       */
      LOG_UNSUPPORTED(TRUE);
      reg = ureg_DECL_temporary(sx->ureg);
   }

   return reg;
}

static struct ureg_src
translate_indexable_temp(struct Shader_xlate *sx,
                         const struct Shader_operand *operand)
{
   struct ureg_src reg;
   switch (operand->index[1].index_rep) {
   case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
      reg = ureg_src(
         sx->temps[sx->indexable_temp_offsets[operand->index[0].imm] +
                   operand->index[1].imm]);
      break;
   case D3D10_SB_OPERAND_INDEX_RELATIVE:
      reg = ureg_src_indirect(
         ureg_src(sx->temps[
                     sx->indexable_temp_offsets[operand->index[0].imm]]),
         translate_relative_operand(sx,
                                    &operand->index[1].rel));
      break;
   case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE:
      reg = ureg_src_indirect(
         ureg_src(sx->temps[
                     operand->index[1].imm +
                     sx->indexable_temp_offsets[operand->index[0].imm]]),
         translate_relative_operand(sx,
                                    &operand->index[1].rel));
      break;
   default:
      /* XXX: Other index representations.
       */
      LOG_UNSUPPORTED(TRUE);
      reg = ureg_src(ureg_DECL_temporary(sx->ureg));
   }
   return reg;
}

static struct ureg_dst
translate_dst_operand(struct Shader_xlate *sx,
                      const struct Shader_dst_operand *operand,
                      boolean saturate)
{
   struct ureg_dst reg;
   unsigned writemask =
      operand->mask >> D3D10_SB_OPERAND_4_COMPONENT_MASK_SHIFT;

   assert((D3D10_SB_OPERAND_4_COMPONENT_MASK_SHIFT) == 4);
   assert((D3D10_SB_OPERAND_4_COMPONENT_MASK_X >> 4) == TGSI_WRITEMASK_X);
   assert((D3D10_SB_OPERAND_4_COMPONENT_MASK_Y >> 4) == TGSI_WRITEMASK_Y);
   assert((D3D10_SB_OPERAND_4_COMPONENT_MASK_Z >> 4) == TGSI_WRITEMASK_Z);
   assert((D3D10_SB_OPERAND_4_COMPONENT_MASK_W >> 4) == TGSI_WRITEMASK_W);

   switch (operand->base.type) {
   case D3D10_SB_OPERAND_TYPE_INDEXABLE_TEMP:
      assert(operand->base.index_dim == 2);
      assert(operand->base.index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->base.index[0].imm < SHADER_MAX_INDEXABLE_TEMPS);

      reg = ureg_dst(translate_indexable_temp(sx, &operand->base));
      break;

   default:
      reg = translate_operand(sx, &operand->base, writemask);
   }

   /* oDepth often has an empty writemask */
   if (operand->base.type != D3D10_SB_OPERAND_TYPE_OUTPUT_DEPTH) {
      reg = ureg_writemask(reg, writemask);
   }

   if (saturate) {
      reg = ureg_saturate(reg);
   }

   return reg;
}

static struct ureg_src
translate_src_operand(struct Shader_xlate *sx,
                      const struct Shader_src_operand *operand,
                      const enum dx10_opcode_format format)
{
   struct ureg_src reg;

   switch (operand->base.type) {
   case D3D10_SB_OPERAND_TYPE_INPUT:
      if (operand->base.index_dim == 1) {
         switch (operand->base.index[0].index_rep) {
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
            assert(operand->base.index[0].imm < SHADER_MAX_INPUTS);
            reg = sx->inputs[operand->base.index[0].imm].reg;
            break;
         case D3D10_SB_OPERAND_INDEX_RELATIVE: {
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[0].rel);
            reg = ureg_src_indirect(sx->inputs[0].reg, tmp);
         }
            break;
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE: {
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[0].rel);
            reg = ureg_src_indirect(sx->inputs[operand->base.index[0].imm].reg, tmp);
         }
            break;
         default:
            /* XXX: Other index representations.
             */
            LOG_UNSUPPORTED(TRUE);

         }
      } else {
         assert(operand->base.index_dim == 2);
         assert(operand->base.index[1].imm < SHADER_MAX_INPUTS);

         switch (operand->base.index[1].index_rep) {
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
            reg = sx->inputs[operand->base.index[1].imm].reg;
            break;
         case D3D10_SB_OPERAND_INDEX_RELATIVE: {
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[1].rel);
            reg = ureg_src_indirect(sx->inputs[0].reg, tmp);
         }
            break;
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE: {
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[1].rel);
            reg = ureg_src_indirect(sx->inputs[operand->base.index[1].imm].reg, tmp);
         }
            break;
         default:
            /* XXX: Other index representations.
             */
            LOG_UNSUPPORTED(TRUE);
         }

         switch (operand->base.index[0].index_rep) {
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
            reg = ureg_src_dimension(reg, operand->base.index[0].imm);
            break;
         case D3D10_SB_OPERAND_INDEX_RELATIVE:{
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[0].rel);
            reg = ureg_src_dimension_indirect(reg, tmp, 0);
         }
            break;
         case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE: {
            struct ureg_src tmp =
               translate_relative_operand(sx, &operand->base.index[0].rel);
            reg = ureg_src_dimension_indirect(reg, tmp, operand->base.index[0].imm);
         }
            break;
         default:
            /* XXX: Other index representations.
             */
            LOG_UNSUPPORTED(TRUE);
         }
      }
      break;

   case D3D10_SB_OPERAND_TYPE_INDEXABLE_TEMP:
      assert(operand->base.index_dim == 2);
      assert(operand->base.index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->base.index[0].imm < SHADER_MAX_INDEXABLE_TEMPS);

      reg = translate_indexable_temp(sx, &operand->base);
      break;

   case D3D10_SB_OPERAND_TYPE_IMMEDIATE32:
      switch (format) {
      case OF_FLOAT:
         reg = ureg_imm4f(sx->ureg,
                          operand->imm[0].f32,
                          operand->imm[1].f32,
                          operand->imm[2].f32,
                          operand->imm[3].f32);
         break;
      case OF_INT:
         reg = ureg_imm4i(sx->ureg,
                          operand->imm[0].i32,
                          operand->imm[1].i32,
                          operand->imm[2].i32,
                          operand->imm[3].i32);
         break;
      case OF_UINT:
         reg = ureg_imm4u(sx->ureg,
                          operand->imm[0].u32,
                          operand->imm[1].u32,
                          operand->imm[2].u32,
                          operand->imm[3].u32);
         break;
      default:
         assert(0);
         reg = ureg_src(ureg_DECL_temporary(sx->ureg));
      }
      break;

   case D3D10_SB_OPERAND_TYPE_SAMPLER:
      assert(operand->base.index_dim == 1);
      assert(operand->base.index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->base.index[0].imm < SHADER_MAX_SAMPLERS);

      reg = sx->samplers[operand->base.index[0].imm];
      break;

   case D3D10_SB_OPERAND_TYPE_RESOURCE:
      assert(operand->base.index_dim == 1);
      assert(operand->base.index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->base.index[0].imm < SHADER_MAX_RESOURCES);

      reg = sx->sv[operand->base.index[0].imm];
      break;

   case D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER:
      assert(operand->base.index_dim == 2);

      assert(operand->base.index[0].index_rep == D3D10_SB_OPERAND_INDEX_IMMEDIATE32);
      assert(operand->base.index[0].imm < PIPE_MAX_CONSTANT_BUFFERS);

      switch (operand->base.index[1].index_rep) {
      case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
         assert(operand->base.index[1].imm < SHADER_MAX_CONSTS);

         reg = ureg_src_register(TGSI_FILE_CONSTANT, operand->base.index[1].imm);
         reg = ureg_src_dimension(reg, operand->base.index[0].imm);
         break;
      case D3D10_SB_OPERAND_INDEX_RELATIVE:
      case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE:
         reg = ureg_src_register(TGSI_FILE_CONSTANT, operand->base.index[1].imm);
         reg = ureg_src_indirect(
            reg,
            translate_relative_operand(sx, &operand->base.index[1].rel));
         reg = ureg_src_dimension(reg, operand->base.index[0].imm);
         break;
      default:
         /* XXX: Other index representations.
          */
         LOG_UNSUPPORTED(TRUE);
      }

      break;

   case D3D10_SB_OPERAND_TYPE_IMMEDIATE_CONSTANT_BUFFER:
      assert(operand->base.index_dim == 1);

      switch (operand->base.index[0].index_rep) {
      case D3D10_SB_OPERAND_INDEX_IMMEDIATE32:
         reg = sx->imms;
         reg.Index += operand->base.index[0].imm;
         break;
      case D3D10_SB_OPERAND_INDEX_RELATIVE:
      case D3D10_SB_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE:
         reg = sx->imms;
         reg.Index += operand->base.index[0].imm;
         reg = ureg_src_indirect(
            sx->imms,
            translate_relative_operand(sx, &operand->base.index[0].rel));
         break;
      default:
         /* XXX: Other index representations.
          */
         LOG_UNSUPPORTED(TRUE);
      }
      break;

   case D3D10_SB_OPERAND_TYPE_INPUT_PRIMITIVEID:
      reg = sx->prim_id;
      break;

   default:
      reg = ureg_src(translate_operand(sx, &operand->base, 0));
   }

   reg = ureg_swizzle(reg,
                      operand->swizzle[0],
                      operand->swizzle[1],
                      operand->swizzle[2],
                      operand->swizzle[3]);

   switch (operand->modifier) {
   case D3D10_SB_OPERAND_MODIFIER_NONE:
      break;
   case D3D10_SB_OPERAND_MODIFIER_NEG:
      reg = ureg_negate(reg);
      break;
   case D3D10_SB_OPERAND_MODIFIER_ABS:
      reg = ureg_abs(reg);
      break;
   case D3D10_SB_OPERAND_MODIFIER_ABSNEG:
      reg = ureg_negate(ureg_abs(reg));
      break;
   default:
      assert(0);
   }

   return reg;
}

static uint
translate_resource_dimension(D3D10_SB_RESOURCE_DIMENSION dim)
{
   switch (dim) {
   case D3D10_SB_RESOURCE_DIMENSION_UNKNOWN:
      return TGSI_TEXTURE_UNKNOWN;
   case D3D10_SB_RESOURCE_DIMENSION_BUFFER:
      return TGSI_TEXTURE_BUFFER;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE1D:
      return TGSI_TEXTURE_1D;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE2D:
      return TGSI_TEXTURE_2D;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE2DMS:
      return TGSI_TEXTURE_2D_MSAA;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE3D:
      return TGSI_TEXTURE_3D;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURECUBE:
      return TGSI_TEXTURE_CUBE;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE1DARRAY:
      return TGSI_TEXTURE_1D_ARRAY;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE2DARRAY:
      return TGSI_TEXTURE_2D_ARRAY;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURE2DMSARRAY:
      return TGSI_TEXTURE_2D_ARRAY_MSAA;
   case D3D10_SB_RESOURCE_DIMENSION_TEXTURECUBEARRAY:
      return TGSI_TEXTURE_CUBE_ARRAY;
   default:
      assert(0);
      return TGSI_TEXTURE_UNKNOWN;
   }
}

static uint
texture_dim_from_tgsi_target(unsigned tgsi_target)
{
   switch (tgsi_target) {
   case TGSI_TEXTURE_BUFFER:
   case TGSI_TEXTURE_1D:
   case TGSI_TEXTURE_1D_ARRAY:
      return 1;
   case TGSI_TEXTURE_2D:
   case TGSI_TEXTURE_2D_MSAA:
   case TGSI_TEXTURE_CUBE:
   case TGSI_TEXTURE_2D_ARRAY:
   case TGSI_TEXTURE_2D_ARRAY_MSAA:
      return 2;
   case TGSI_TEXTURE_3D:
      return 3;
   case TGSI_TEXTURE_UNKNOWN:
   default:
      assert(0);
      return 1;
   }
}

static boolean
operand_is_scalar(const struct Shader_src_operand *operand)
{
   return operand->swizzle[0] == operand->swizzle[1] &&
          operand->swizzle[1] == operand->swizzle[2] &&
          operand->swizzle[2] == operand->swizzle[3];
}

static void
Shader_add_call(struct Shader_xlate *sx,
                unsigned d3d_label,
                unsigned tgsi_label_token)
{
   ASSERT(sx->num_calls < sx->max_calls);

   sx->calls[sx->num_calls].d3d_label = d3d_label;
   sx->calls[sx->num_calls].tgsi_label_token = tgsi_label_token;
   sx->num_calls++;
}

static void
Shader_add_label(struct Shader_xlate *sx,
                 unsigned d3d_label,
                 unsigned tgsi_insn_no)
{
   ASSERT(sx->num_labels < sx->max_labels);

   sx->labels[sx->num_labels].d3d_label = d3d_label;
   sx->labels[sx->num_labels].tgsi_insn_no = tgsi_insn_no;
   sx->num_labels++;
}


static void
sample_ureg_emit(struct ureg_program *ureg,
                 unsigned tgsi_opcode,
                 unsigned num_src,
                 struct Shader_opcode *opcode,
                 struct ureg_dst dst,
                 struct ureg_src *src)
{
   unsigned num_offsets = 0;
   struct tgsi_texture_offset texoffsets;

   memset(&texoffsets, 0, sizeof texoffsets);

   if (opcode->imm_texel_offset.u ||
       opcode->imm_texel_offset.v ||
       opcode->imm_texel_offset.w) {
      struct ureg_src offsetreg;
      num_offsets = 1;
      /* don't actually always need all 3 values */
      offsetreg = ureg_imm3i(ureg,
                             opcode->imm_texel_offset.u,
                             opcode->imm_texel_offset.v,
                             opcode->imm_texel_offset.w);
      texoffsets.File = offsetreg.File;
      texoffsets.Index = offsetreg.Index;
      texoffsets.SwizzleX = offsetreg.SwizzleX;
      texoffsets.SwizzleY = offsetreg.SwizzleY;
      texoffsets.SwizzleZ = offsetreg.SwizzleZ;
   }

   ureg_tex_insn(ureg,
                 tgsi_opcode,
                 &dst, 1,
                 TGSI_TEXTURE_UNKNOWN,
                 TGSI_RETURN_TYPE_UNKNOWN,
                 &texoffsets, num_offsets,
                 src, num_src);
}

typedef void (*unary_ureg_func)(struct ureg_program *ureg, struct ureg_dst dst,
                                struct ureg_src src);
static void
expand_unary_to_scalarf(struct ureg_program *ureg, unary_ureg_func func,
                        struct Shader_xlate *sx, struct Shader_opcode *opcode)
{
   struct ureg_dst tmp = ureg_DECL_temporary(ureg);
   struct ureg_dst dst = translate_dst_operand(sx, &opcode->dst[0],
                                               opcode->saturate);
   struct ureg_src src = translate_src_operand(sx, &opcode->src[0], OF_FLOAT);
   struct ureg_dst scalar_dst;
   ureg_MOV(ureg, tmp, src);
   src = ureg_src(tmp);

   scalar_dst = ureg_writemask(dst, TGSI_WRITEMASK_X);
   if (scalar_dst.WriteMask != TGSI_WRITEMASK_NONE) {
      func(ureg, scalar_dst,
           ureg_scalar(src, TGSI_SWIZZLE_X));
   }
   scalar_dst = ureg_writemask(dst, TGSI_WRITEMASK_Y);
   if (scalar_dst.WriteMask != TGSI_WRITEMASK_NONE) {
      func(ureg, scalar_dst,
           ureg_scalar(src, TGSI_SWIZZLE_Y));
   }
   scalar_dst = ureg_writemask(dst, TGSI_WRITEMASK_Z);
   if (scalar_dst.WriteMask != TGSI_WRITEMASK_NONE) {
      func(ureg, scalar_dst,
           ureg_scalar(src, TGSI_SWIZZLE_Z));
   }
   scalar_dst = ureg_writemask(dst, TGSI_WRITEMASK_W);
   if (scalar_dst.WriteMask != TGSI_WRITEMASK_NONE) {
      func(ureg, scalar_dst,
           ureg_scalar(src, TGSI_SWIZZLE_W));
   }
   ureg_release_temporary(ureg, tmp);
}

const struct tgsi_token *
Shader_tgsi_translate(const unsigned *code,
                      unsigned *output_mapping)
{
   struct Shader_xlate sx;
   struct Shader_parser parser;
   struct ureg_program *ureg = NULL;
   struct Shader_opcode opcode;
   const struct tgsi_token *tokens = NULL;
   uint nr_tokens;
   boolean shader_dumped = FALSE;
   boolean inside_sub = FALSE;
   uint i, j;

   memset(&sx, 0, sizeof sx);

   Shader_parse_init(&parser, code);

   if (st_debug & ST_DEBUG_TGSI) {
      dx10_shader_dump_tokens(code);
      shader_dumped = TRUE;
   }

   sx.max_calls = 64;
   sx.calls = (struct Shader_call *)MALLOC(sx.max_calls *
                                           sizeof(struct Shader_call));
   sx.num_calls = 0;

   sx.max_labels = 64;
   sx.labels = (struct Shader_label *)MALLOC(sx.max_labels *
                                             sizeof(struct Shader_call));
   sx.num_labels = 0;



   /* Header. */
   switch (parser.header.type) {
   case D3D10_SB_PIXEL_SHADER:
      ureg = ureg_create(PIPE_SHADER_FRAGMENT);
      break;
   case D3D10_SB_VERTEX_SHADER:
      ureg = ureg_create(PIPE_SHADER_VERTEX);
      break;
   case D3D10_SB_GEOMETRY_SHADER:
      ureg = ureg_create(PIPE_SHADER_GEOMETRY);
      break;
   }

   assert(ureg);
   sx.ureg = ureg;

   while (Shader_parse_opcode(&parser, &opcode)) {
      const struct dx10_opcode_xlate *ox;

      assert(opcode.type < D3D10_SB_NUM_OPCODES);
      ox = &opcode_xlate[opcode.type];

      switch (opcode.type) {
      case D3D10_SB_OPCODE_EXP:
         expand_unary_to_scalarf(ureg, ureg_EX2, &sx, &opcode);
         break;
      case D3D10_SB_OPCODE_SQRT:
         expand_unary_to_scalarf(ureg, ureg_SQRT, &sx, &opcode);
         break;
      case D3D10_SB_OPCODE_RSQ:
         expand_unary_to_scalarf(ureg, ureg_RSQ, &sx, &opcode);
         break;
      case D3D10_SB_OPCODE_LOG:
         expand_unary_to_scalarf(ureg, ureg_LG2, &sx, &opcode);
         break;
      case D3D10_SB_OPCODE_IMUL:
         if (opcode.dst[0].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_IMUL_HI(ureg,
                        translate_dst_operand(&sx, &opcode.dst[0], opcode.saturate),
                        translate_src_operand(&sx, &opcode.src[0], OF_INT),
                        translate_src_operand(&sx, &opcode.src[1], OF_INT));
         }

         if (opcode.dst[1].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_UMUL(ureg,
                      translate_dst_operand(&sx, &opcode.dst[1], opcode.saturate),
                      translate_src_operand(&sx, &opcode.src[0], OF_INT),
                      translate_src_operand(&sx, &opcode.src[1], OF_INT));
         }

         break;

      case D3D10_SB_OPCODE_FTOI: {
         /* XXX: tgsi (and just about everybody else, c, opencl, glsl) has
          * out-of-range (and NaN) values undefined for f2i/f2u, but d3d10
          * requires clamping to min and max representable value (as well as 0
          * for NaNs) (this applies to both ftoi and ftou). At least the online
          * docs state that - this is consistent with generic d3d10 conversion
          * rules.
          * For FTOI, we cheat a bit here - in particular depending on noone
          * caring about NaNs, and depending on the (undefined!) behavior of
          * F2I returning 0x80000000 for too negative values (which works with
          * x86 sse). Hence only need to clamp too positive values.
          * Note that it is impossible to clamp using a float, since 2^31 - 1
          * is not exactly representable with a float.
          */
         struct ureg_dst too_large = ureg_DECL_temporary(ureg);
         struct ureg_dst tmp = ureg_DECL_temporary(ureg);
         ureg_FSGE(ureg, too_large,
                   translate_src_operand(&sx, &opcode.src[0], OF_FLOAT),
                   ureg_imm1f(ureg, 2147483648.0f));
         ureg_F2I(ureg, tmp,
                  translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
         ureg_UCMP(ureg,
                   translate_dst_operand(&sx, &opcode.dst[0], opcode.saturate),
                   ureg_src(too_large),
                   ureg_imm1i(ureg, 0x7fffffff),
                   ureg_src(tmp));
         ureg_release_temporary(ureg, too_large);
         ureg_release_temporary(ureg, tmp);
      }
         break;

      case D3D10_SB_OPCODE_FTOU: {
         /* For ftou, we need to do both clamps, which as a bonus also
          * gets us correct NaN behavior.
          * Note that it is impossible to clamp using a float against the upper
          * limit, since 2^32 - 1 is not exactly representable with a float,
          * but the clamp against 0.0 certainly works just fine.
          */
         struct ureg_dst too_large = ureg_DECL_temporary(ureg);
         struct ureg_dst tmp = ureg_DECL_temporary(ureg);
         ureg_FSGE(ureg, too_large,
                   translate_src_operand(&sx, &opcode.src[0], OF_FLOAT),
                   ureg_imm1f(ureg, 4294967296.0f));
         /* clamp negative values + NaN to zero.
          * (Could be done slightly more efficient in llvmpipe due to
          * MAX NaN behavior handling.)
          */
         ureg_MAX(ureg, tmp,
                  ureg_imm1f(ureg, 0.0f),
                  translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
         ureg_F2U(ureg, tmp,
                  ureg_src(tmp));
         ureg_UCMP(ureg,
                   translate_dst_operand(&sx, &opcode.dst[0], opcode.saturate),
                   ureg_src(too_large),
                   ureg_imm1u(ureg, 0xffffffff),
                   ureg_src(tmp));
         ureg_release_temporary(ureg, too_large);
         ureg_release_temporary(ureg, tmp);
      }
         break;

      case D3D10_SB_OPCODE_LD_MS:
         /* XXX: We don't support multi-sampling yet, but we need to parse
          * this opcode regardless, so we just ignore sample index operand
          * for now */
      case D3D10_SB_OPCODE_LD:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            unsigned resource = opcode.src[1].base.index[0].imm;
            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            if (ureg_src_is_undef(sx.samplers[resource])) {
               sx.samplers[resource] =
                  ureg_DECL_sampler(ureg, resource);
            }

            ureg_TXF(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0], opcode.saturate),
                     sx.resources[resource].target,
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT),
                     sx.samplers[resource]);
         }
         else {
            struct ureg_src srcreg[2];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_INT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_INT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_I, 2, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_CUSTOMDATA:
         if (opcode.customdata._class ==
             D3D10_SB_CUSTOMDATA_DCL_IMMEDIATE_CONSTANT_BUFFER) {
            sx.imms =
               ureg_DECL_immediate_block_uint(ureg,
                                              opcode.customdata.u.constbuf.data,
                                              opcode.customdata.u.constbuf.count);
         } else {
            assert(0);
         }
         break;

      case D3D10_SB_OPCODE_RESINFO:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            unsigned resource = opcode.src[1].base.index[0].imm;
            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            if (ureg_src_is_undef(sx.samplers[resource])) {
               sx.samplers[resource] =
                  ureg_DECL_sampler(ureg, resource);
            }
            /* don't bother with swizzle, ret type etc. */
            ureg_TXQ(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[resource].target,
                     translate_src_operand(&sx, &opcode.src[0], OF_UINT),
                     sx.samplers[resource]);
         }
         else {
            struct ureg_dst r0 = ureg_DECL_temporary(ureg);
            struct ureg_src tsrc = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            struct ureg_dst dstreg = translate_dst_operand(&sx, &opcode.dst[0],
                                                           opcode.saturate);

            /* while specs say swizzle is ignored better safe than sorry */
            tsrc.SwizzleX = TGSI_SWIZZLE_X;
            tsrc.SwizzleY = TGSI_SWIZZLE_Y;
            tsrc.SwizzleZ = TGSI_SWIZZLE_Z;
            tsrc.SwizzleW = TGSI_SWIZZLE_W;

            ureg_SVIEWINFO(ureg, r0,
                           translate_src_operand(&sx, &opcode.src[0], OF_UINT),
                           tsrc);

            tsrc = ureg_src(r0);
            tsrc.SwizzleX = opcode.src[1].swizzle[0];
            tsrc.SwizzleY = opcode.src[1].swizzle[1];
            tsrc.SwizzleZ = opcode.src[1].swizzle[2];
            tsrc.SwizzleW = opcode.src[1].swizzle[3];

            if (opcode.specific.resinfo_ret_type ==
                D3D10_SB_RESINFO_INSTRUCTION_RETURN_UINT) {
               ureg_MOV(ureg, dstreg, tsrc);
            }
            else if (opcode.specific.resinfo_ret_type ==
                     D3D10_SB_RESINFO_INSTRUCTION_RETURN_FLOAT) {
                ureg_I2F(ureg, dstreg, tsrc);
            }
            else { /* D3D10_SB_RESINFO_INSTRUCTION_RETURN_RCPFLOAT */
               unsigned i;
               /*
                * Must apply rcp only to parts determined by dims,
                * (width/height/depth) but NOT to array size nor mip levels
                * hence need to figure that out here.
                * This is one sick modifier if you ask me!
                */
               unsigned res_index = opcode.src[1].base.index[0].imm;
               unsigned target = sx.resources[res_index].target;
               unsigned dims = texture_dim_from_tgsi_target(target);

               ureg_I2F(ureg, r0, ureg_src(r0));
               tsrc = ureg_src(r0);
               for (i = 0; i < 4; i++) {
                  unsigned dst_swizzle = opcode.src[1].swizzle[i];
                  struct ureg_dst dstregmasked = ureg_writemask(dstreg, 1 << i);
                  /*
                   * could do one mov with multiple write mask bits set
                   * but rcp is scalar anyway.
                   */
                  if (dst_swizzle < dims) {
                     ureg_RCP(ureg, dstregmasked, ureg_scalar(tsrc, dst_swizzle));
                  }
                  else {
                     ureg_MOV(ureg, dstregmasked, ureg_scalar(tsrc, dst_swizzle));
                  }
               }
            }
            ureg_release_temporary(ureg, r0);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            LOG_UNSUPPORTED(opcode.src[1].base.index[0].imm != opcode.src[2].base.index[0].imm);

            ureg_TEX(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));
         }
         else {
            struct ureg_src srcreg[3];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE, 3, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE_C:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            struct ureg_dst r0 = ureg_DECL_temporary(ureg);

            /* XXX: Support only 2D texture targets for now.
             *      Need to figure out how to pack the compare value
             *      for other dimensions and if there is enough space
             *      in a single operand for all possible cases.
             */
            LOG_UNSUPPORTED(sx.resources[opcode.src[1].base.index[0].imm].target !=
                            TGSI_TEXTURE_2D);

            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            /* Insert the compare value into .z component.
             */
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_XYW),
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_Z),
                     translate_src_operand(&sx, &opcode.src[3], OF_FLOAT));

            /* XXX: Pass explicit Lod=0 in D3D10_SB_OPCODE_SAMPLE_C_LZ case.
             */

            ureg_TEX(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     ureg_src(r0),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));

            ureg_release_temporary(ureg, r0);
         }
         else {
            struct ureg_src srcreg[4];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);
            srcreg[3] = translate_src_operand(&sx, &opcode.src[3], OF_FLOAT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_C, 4, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE_C_LZ:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            struct ureg_dst r0 = ureg_DECL_temporary(ureg);

            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            /* XXX: Support only 2D texture targets for now.
             *      Need to figure out how to pack the compare value
             *      for other dimensions and if there is enough space
             *      in a single operand for all possible cases.
             */
            LOG_UNSUPPORTED(sx.resources[opcode.src[1].base.index[0].imm].target !=
                            TGSI_TEXTURE_2D);

            /* Insert the compare value into .z component.
             * Insert 0 into .w component.
             */
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_XY),
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_Z),
                     translate_src_operand(&sx, &opcode.src[3], OF_FLOAT));
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_W),
                     ureg_imm1f(ureg, 0.0f));

            ureg_TXL(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     ureg_src(r0),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));

            ureg_release_temporary(ureg, r0);
         }
         else {
            struct ureg_src srcreg[4];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);
            srcreg[3] = translate_src_operand(&sx, &opcode.src[3], OF_FLOAT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_C_LZ, 4, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE_L:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            struct ureg_dst r0 = ureg_DECL_temporary(ureg);

            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            /* Insert LOD into .w component.
             */
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_XYZ),
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_W),
                     translate_src_operand(&sx, &opcode.src[3], OF_FLOAT));

            ureg_TXL(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     ureg_src(r0),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));

            ureg_release_temporary(ureg, r0);
         }
         else {
            struct ureg_src srcreg[4];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);
            srcreg[3] = translate_src_operand(&sx, &opcode.src[3], OF_FLOAT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_L, 4, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE_D:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            ureg_TXD(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT),
                     translate_src_operand(&sx, &opcode.src[3], OF_FLOAT),
                     translate_src_operand(&sx, &opcode.src[4], OF_FLOAT),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));
         }
         else {
            struct ureg_src srcreg[5];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);
            srcreg[3] = translate_src_operand(&sx, &opcode.src[3], OF_FLOAT);
            srcreg[4] = translate_src_operand(&sx, &opcode.src[4], OF_FLOAT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_D, 5, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SAMPLE_B:
         if (st_debug & ST_DEBUG_OLD_TEX_OPS) {
            struct ureg_dst r0 = ureg_DECL_temporary(ureg);

            assert(opcode.src[1].base.index_dim == 1);
            assert(opcode.src[1].base.index[0].imm < SHADER_MAX_RESOURCES);

            /* Insert LOD bias into .w component.
             */
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_XYZ),
                     translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
            ureg_MOV(ureg,
                     ureg_writemask(r0, TGSI_WRITEMASK_W),
                     translate_src_operand(&sx, &opcode.src[3], OF_FLOAT));

            ureg_TXB(ureg,
                     translate_dst_operand(&sx, &opcode.dst[0],
                                           opcode.saturate),
                     sx.resources[opcode.src[1].base.index[0].imm].target,
                     ureg_src(r0),
                     translate_src_operand(&sx, &opcode.src[2], OF_FLOAT));

            ureg_release_temporary(ureg, r0);
         }
         else {
            struct ureg_src srcreg[4];
            srcreg[0] = translate_src_operand(&sx, &opcode.src[0], OF_FLOAT);
            srcreg[1] = translate_src_operand(&sx, &opcode.src[1], OF_UINT);
            srcreg[2] = translate_src_operand(&sx, &opcode.src[2], OF_UINT);
            srcreg[3] = translate_src_operand(&sx, &opcode.src[3], OF_FLOAT);

            sample_ureg_emit(ureg, TGSI_OPCODE_SAMPLE_B, 4, &opcode,
                             translate_dst_operand(&sx, &opcode.dst[0],
                                                   opcode.saturate),
                             srcreg);
         }
         break;

      case D3D10_SB_OPCODE_SINCOS: {
         struct ureg_dst src0 = ureg_DECL_temporary(ureg);
         ureg_MOV(ureg, src0, translate_src_operand(&sx, &opcode.src[0], OF_FLOAT));
         if (opcode.dst[0].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            struct ureg_dst dst = translate_dst_operand(&sx, &opcode.dst[0],
                                                        opcode.saturate);
            struct ureg_src src = ureg_src(src0);
            ureg_SIN(ureg, ureg_writemask(dst, TGSI_WRITEMASK_X),
                     ureg_scalar(src, TGSI_SWIZZLE_X));
            ureg_SIN(ureg, ureg_writemask(dst, TGSI_WRITEMASK_Y),
                     ureg_scalar(src, TGSI_SWIZZLE_Y));
            ureg_SIN(ureg, ureg_writemask(dst, TGSI_WRITEMASK_Z),
                     ureg_scalar(src, TGSI_SWIZZLE_Z));
            ureg_SIN(ureg, ureg_writemask(dst, TGSI_WRITEMASK_W),
                     ureg_scalar(src, TGSI_SWIZZLE_W));
         }
         if (opcode.dst[1].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            struct ureg_dst dst = translate_dst_operand(&sx, &opcode.dst[1],
                                                        opcode.saturate);
            struct ureg_src src = ureg_src(src0);
            ureg_COS(ureg, ureg_writemask(dst, TGSI_WRITEMASK_X),
                     ureg_scalar(src, TGSI_SWIZZLE_X));
            ureg_COS(ureg, ureg_writemask(dst, TGSI_WRITEMASK_Y),
                     ureg_scalar(src, TGSI_SWIZZLE_Y));
            ureg_COS(ureg, ureg_writemask(dst, TGSI_WRITEMASK_Z),
                     ureg_scalar(src, TGSI_SWIZZLE_Z));
            ureg_COS(ureg, ureg_writemask(dst, TGSI_WRITEMASK_W),
                     ureg_scalar(src, TGSI_SWIZZLE_W));
         }
         ureg_release_temporary(ureg, src0);
      }
         break;

      case D3D10_SB_OPCODE_UDIV: {
         struct ureg_dst src0 = ureg_DECL_temporary(ureg);
         struct ureg_dst src1 = ureg_DECL_temporary(ureg);
         ureg_MOV(ureg, src0, translate_src_operand(&sx, &opcode.src[0], OF_UINT));
         ureg_MOV(ureg, src1, translate_src_operand(&sx, &opcode.src[1], OF_UINT));
         if (opcode.dst[0].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_UDIV(ureg,
                      translate_dst_operand(&sx, &opcode.dst[0],
                                            opcode.saturate),
                      ureg_src(src0), ureg_src(src1));
         }
         if (opcode.dst[1].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_UMOD(ureg,
                      translate_dst_operand(&sx, &opcode.dst[1],
                                            opcode.saturate),
                      ureg_src(src0), ureg_src(src1));
         }
         ureg_release_temporary(ureg, src0);
         ureg_release_temporary(ureg, src1);
      }
         break;
      case D3D10_SB_OPCODE_UMUL: {
         if (opcode.dst[0].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_UMUL_HI(ureg,
                         translate_dst_operand(&sx, &opcode.dst[0],
                                               opcode.saturate),
                         translate_src_operand(&sx, &opcode.src[0], OF_UINT),
                         translate_src_operand(&sx, &opcode.src[1], OF_UINT));
         }
         if (opcode.dst[1].base.type != D3D10_SB_OPERAND_TYPE_NULL) {
            ureg_UMUL(ureg,
                      translate_dst_operand(&sx, &opcode.dst[1],
                                            opcode.saturate),
                      translate_src_operand(&sx, &opcode.src[0], OF_UINT),
                      translate_src_operand(&sx, &opcode.src[1], OF_UINT));
         }
      }
         break;

      case D3D10_SB_OPCODE_DCL_RESOURCE:
      {
         unsigned target;
         unsigned res_index = opcode.dst[0].base.index[0].imm;
         assert(opcode.dst[0].base.index_dim == 1);
         assert(res_index < SHADER_MAX_RESOURCES);

         target = translate_resource_dimension(opcode.specific.dcl_resource_dimension);
         sx.resources[res_index].target = target;
         if (!(st_debug & ST_DEBUG_OLD_TEX_OPS)) {
            sx.sv[res_index] =
               ureg_DECL_sampler_view(ureg, res_index, target,
                                      trans_dcl_ret_type(opcode.dcl_resource_ret_type[0]),
                                      trans_dcl_ret_type(opcode.dcl_resource_ret_type[1]),
                                      trans_dcl_ret_type(opcode.dcl_resource_ret_type[2]),
                                      trans_dcl_ret_type(opcode.dcl_resource_ret_type[3]));
         }
         break;
      }

      case D3D10_SB_OPCODE_DCL_CONSTANT_BUFFER: {
         unsigned num_constants = opcode.src[0].base.index[1].imm;

         assert(opcode.src[0].base.index[0].imm < PIPE_MAX_CONSTANT_BUFFERS);

         if (num_constants == 0) {
            num_constants = SHADER_MAX_CONSTS;
         } else {
            assert(num_constants <= SHADER_MAX_CONSTS);
         }

         ureg_DECL_constant2D(ureg,
                              0,
                              num_constants - 1,
                              opcode.src[0].base.index[0].imm);
         break;
      }

      case D3D10_SB_OPCODE_DCL_SAMPLER:
         assert(opcode.dst[0].base.index_dim == 1);
         assert(opcode.dst[0].base.index[0].imm < SHADER_MAX_SAMPLERS);

         sx.samplers[opcode.dst[0].base.index[0].imm] =
            ureg_DECL_sampler(ureg,
                              opcode.dst[0].base.index[0].imm);
         break;

      case D3D10_SB_OPCODE_DCL_GS_OUTPUT_PRIMITIVE_TOPOLOGY:
         assert(parser.header.type == D3D10_SB_GEOMETRY_SHADER);

         switch (opcode.specific.dcl_gs_output_primitive_topology) {
         case D3D10_SB_PRIMITIVE_TOPOLOGY_POINTLIST:
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_OUTPUT_PRIM,
                          PIPE_PRIM_POINTS);
            break;

         case D3D10_SB_PRIMITIVE_TOPOLOGY_LINESTRIP:
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_OUTPUT_PRIM,
                          PIPE_PRIM_LINE_STRIP);
            break;

         case D3D10_SB_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP:
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_OUTPUT_PRIM,
                          PIPE_PRIM_TRIANGLE_STRIP);
            break;

         default:
            assert(0);
         }
         break;

      case D3D10_SB_OPCODE_DCL_GS_INPUT_PRIMITIVE:
         assert(parser.header.type == D3D10_SB_GEOMETRY_SHADER);

         /* Figure out the second dimension of GS inputs.
          */
         switch (opcode.specific.dcl_gs_input_primitive) {
         case D3D10_SB_PRIMITIVE_POINT:
            declare_vertices_in(&sx, 1);
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_INPUT_PRIM,
                          PIPE_PRIM_POINTS);
            break;

         case D3D10_SB_PRIMITIVE_LINE:
            declare_vertices_in(&sx, 2);
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_INPUT_PRIM,
                          PIPE_PRIM_LINES);
            break;

         case D3D10_SB_PRIMITIVE_TRIANGLE:
            declare_vertices_in(&sx, 3);
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_INPUT_PRIM,
                          PIPE_PRIM_TRIANGLES);
            break;

         case D3D10_SB_PRIMITIVE_LINE_ADJ:
            declare_vertices_in(&sx, 4);
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_INPUT_PRIM,
                          PIPE_PRIM_LINES_ADJACENCY);
            break;

         case D3D10_SB_PRIMITIVE_TRIANGLE_ADJ:
            declare_vertices_in(&sx, 6);
            ureg_property(sx.ureg,
                          TGSI_PROPERTY_GS_INPUT_PRIM,
                          PIPE_PRIM_TRIANGLES_ADJACENCY);
            break;

         default:
            assert(0);
         }
         break;

      case D3D10_SB_OPCODE_DCL_MAX_OUTPUT_VERTEX_COUNT:
         assert(parser.header.type == D3D10_SB_GEOMETRY_SHADER);

         ureg_property(sx.ureg,
                       TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES,
                       opcode.specific.dcl_max_output_vertex_count);
         break;

      case D3D10_SB_OPCODE_DCL_INPUT:
         if (parser.header.type == D3D10_SB_VERTEX_SHADER) {
            dcl_vs_input(&sx, ureg, &opcode.dst[0]);
         } else {
            assert(parser.header.type == D3D10_SB_GEOMETRY_SHADER);
            dcl_gs_input(&sx, ureg, &opcode.dst[0]);
         }
         break;

      case D3D10_SB_OPCODE_DCL_INPUT_SGV:
         assert(parser.header.type == D3D10_SB_VERTEX_SHADER);
         dcl_sgv_input(&sx, ureg, &opcode.dst[0], opcode.dcl_siv_name);
         break;

      case D3D10_SB_OPCODE_DCL_INPUT_SIV:
         assert(parser.header.type == D3D10_SB_GEOMETRY_SHADER);
         dcl_siv_input(&sx, ureg, &opcode.dst[0], opcode.dcl_siv_name);
         break;

      case D3D10_SB_OPCODE_DCL_INPUT_PS:
         assert(parser.header.type == D3D10_SB_PIXEL_SHADER);
         dcl_ps_input(&sx, ureg, &opcode.dst[0],
                      opcode.specific.dcl_in_ps_interp);
         break;

      case D3D10_SB_OPCODE_DCL_INPUT_PS_SGV:
         assert(parser.header.type == D3D10_SB_PIXEL_SHADER);
         dcl_ps_sgv_input(&sx, ureg, &opcode.dst[0],
                          opcode.dcl_siv_name);
         break;

      case D3D10_SB_OPCODE_DCL_INPUT_PS_SIV:
         assert(parser.header.type == D3D10_SB_PIXEL_SHADER);
         dcl_ps_siv_input(&sx, ureg, &opcode.dst[0],
                          opcode.dcl_siv_name,
                          opcode.specific.dcl_in_ps_interp);
         break;

      case D3D10_SB_OPCODE_DCL_OUTPUT:
         if (parser.header.type == D3D10_SB_PIXEL_SHADER) {
            /* Pixel shader outputs. */
            if (opcode.dst[0].base.type == D3D10_SB_OPERAND_TYPE_OUTPUT_DEPTH) {
               /* Depth output. */
               assert(opcode.dst[0].base.index_dim == 0);

               sx.output_depth = ureg_DECL_output_masked(ureg, TGSI_SEMANTIC_POSITION, 0, TGSI_WRITEMASK_Z, 0, 1);
               sx.output_depth = ureg_writemask(sx.output_depth, TGSI_WRITEMASK_Z);
            } else {
               /* Color outputs. */
               assert(opcode.dst[0].base.index_dim == 1);
               assert(opcode.dst[0].base.index[0].imm < SHADER_MAX_OUTPUTS);

               dcl_base_output(&sx, ureg,
                               ureg_DECL_output(ureg,
                                                TGSI_SEMANTIC_COLOR,
                                                opcode.dst[0].base.index[0].imm),
                               &opcode.dst[0]);
            }
         } else {
            assert(opcode.dst[0].base.index_dim == 1);
            assert(opcode.dst[0].base.index[0].imm < SHADER_MAX_OUTPUTS);

            if (output_mapping) {
               unsigned nr_outputs = ureg_get_nr_outputs(ureg);
               output_mapping[nr_outputs]
                  = opcode.dst[0].base.index[0].imm;
            }
            dcl_base_output(&sx, ureg,
                            ureg_DECL_output(ureg,
                                             TGSI_SEMANTIC_GENERIC,
                                             opcode.dst[0].base.index[0].imm),
                            &opcode.dst[0]);
         }
         break;

      case D3D10_SB_OPCODE_DCL_OUTPUT_SIV:
         assert(opcode.dst[0].base.index_dim == 1);
         assert(opcode.dst[0].base.index[0].imm < SHADER_MAX_OUTPUTS);

         if (output_mapping) {
            unsigned nr_outputs = ureg_get_nr_outputs(ureg);
            output_mapping[nr_outputs]
               = opcode.dst[0].base.index[0].imm;
         }
         if (opcode.dcl_siv_name == D3D10_SB_NAME_CLIP_DISTANCE ||
             opcode.dcl_siv_name == D3D10_SB_NAME_CULL_DISTANCE) {
            /*
             * FIXME: this is quite broken. gallium no longer has separate
             * clip/cull dists, using (max 2) combined clipdist/culldist regs
             * instead. Unlike d3d10 though, which is clip and which cull is
             * simply determined by by number of clip/cull dists (that is,
             * all clip dists must come first).
             */
            unsigned numcliporcull = sx.num_clip_distances_declared +
                                     sx.num_cull_distances_declared;
            sx.clip_distance_mapping[numcliporcull].d3d =
               opcode.dst[0].base.index[0].imm;
            sx.clip_distance_mapping[numcliporcull].tgsi = numcliporcull;
            if (opcode.dcl_siv_name == D3D10_SB_NAME_CLIP_DISTANCE) {
               ++sx.num_clip_distances_declared;
               /* re-emit should be safe... */
               ureg_property(ureg, TGSI_PROPERTY_NUM_CLIPDIST_ENABLED,
                             sx.num_clip_distances_declared);
            } else {
               ++sx.num_cull_distances_declared;
               ureg_property(ureg, TGSI_PROPERTY_NUM_CULLDIST_ENABLED,
                             sx.num_cull_distances_declared);
            }
         } else if (0 && opcode.dcl_siv_name == D3D10_SB_NAME_CULL_DISTANCE) {
            sx.cull_distance_mapping[sx.num_cull_distances_declared].d3d =
               opcode.dst[0].base.index[0].imm;
            sx.cull_distance_mapping[sx.num_cull_distances_declared].tgsi =
               sx.num_cull_distances_declared;
            ++sx.num_cull_distances_declared;
            ureg_property(ureg, TGSI_PROPERTY_NUM_CULLDIST_ENABLED,
                          sx.num_cull_distances_declared);
         }

         dcl_base_output(&sx, ureg,
                         ureg_DECL_output_masked(
                            ureg,
                            translate_system_name(opcode.dcl_siv_name),
                            translate_semantic_index(&sx, opcode.dcl_siv_name,
                                                     &opcode.dst[0]),
                            opcode.dst[0].mask >> D3D10_SB_OPERAND_4_COMPONENT_MASK_SHIFT,
                            0, 1),
                         &opcode.dst[0]);
         break;

      case D3D10_SB_OPCODE_DCL_OUTPUT_SGV:
         assert(opcode.dst[0].base.index_dim == 1);
         assert(opcode.dst[0].base.index[0].imm < SHADER_MAX_OUTPUTS);

         if (output_mapping) {
            unsigned nr_outputs = ureg_get_nr_outputs(ureg);
            output_mapping[nr_outputs]
               = opcode.dst[0].base.index[0].imm;
         }
         dcl_base_output(&sx, ureg,
                         ureg_DECL_output(ureg,
                                          translate_system_name(opcode.dcl_siv_name),
                                          0),
                         &opcode.dst[0]);
         break;

      case D3D10_SB_OPCODE_DCL_TEMPS:
         {
            uint i;

            assert(opcode.specific.dcl_num_temps + sx.declared_temps <=
                   SHADER_MAX_TEMPS);

            sx.temp_offset = sx.declared_temps;

            for (i = 0; i < opcode.specific.dcl_num_temps; i++) {
               sx.temps[sx.declared_temps + i] = ureg_DECL_temporary(ureg);
            }
            sx.declared_temps += opcode.specific.dcl_num_temps;
         }
         break;

      case D3D10_SB_OPCODE_DCL_INDEXABLE_TEMP:
         {
            uint i;

            /* XXX: Add true indexable temps to gallium.
             */

            assert(opcode.specific.dcl_indexable_temp.index <
                   SHADER_MAX_INDEXABLE_TEMPS);
            assert(opcode.specific.dcl_indexable_temp.count + sx.declared_temps <=
                   SHADER_MAX_TEMPS);

            sx.indexable_temp_offsets[opcode.specific.dcl_indexable_temp.index] =
               sx.declared_temps;

            for (i = 0; i < opcode.specific.dcl_indexable_temp.count; i++) {
               sx.temps[sx.declared_temps + i] = ureg_DECL_temporary(ureg);
            }
            sx.declared_temps += opcode.specific.dcl_indexable_temp.count;
         }
         break;
      case D3D10_SB_OPCODE_IF: {
         unsigned label = 0;
         if (opcode.specific.test_boolean == D3D10_SB_INSTRUCTION_TEST_ZERO) {
            struct ureg_src src =
               translate_src_operand(&sx, &opcode.src[0], OF_INT);
            struct ureg_dst src_nz = ureg_DECL_temporary(ureg);
            ureg_USEQ(ureg, src_nz, src, ureg_imm1u(ureg, 0));
            ureg_UIF(ureg, ureg_src(src_nz), &label);
            ureg_release_temporary(ureg, src_nz);;
         } else {
            ureg_UIF(ureg, translate_src_operand(&sx, &opcode.src[0], OF_INT), &label);
         }
      }
         break;
      case D3D10_SB_OPCODE_RETC:
      case D3D10_SB_OPCODE_CONTINUEC:
      case D3D10_SB_OPCODE_CALLC:
      case D3D10_SB_OPCODE_DISCARD:
      case D3D10_SB_OPCODE_BREAKC:
      {
         unsigned label = 0;
         assert(operand_is_scalar(&opcode.src[0]));
         if (opcode.specific.test_boolean == D3D10_SB_INSTRUCTION_TEST_ZERO) {
            struct ureg_src src =
               translate_src_operand(&sx, &opcode.src[0], OF_INT);
            struct ureg_dst src_nz = ureg_DECL_temporary(ureg);
            ureg_USEQ(ureg, src_nz, src, ureg_imm1u(ureg, 0));
            ureg_UIF(ureg, ureg_src(src_nz), &label);
            ureg_release_temporary(ureg, src_nz);
         }
         else {
            ureg_UIF(ureg, translate_src_operand(&sx, &opcode.src[0], OF_INT), &label);
         }
         switch (opcode.type) {
         case D3D10_SB_OPCODE_RETC:
            ureg_RET(ureg);
            break;
         case D3D10_SB_OPCODE_CONTINUEC:
            ureg_CONT(ureg);
            break;
         case D3D10_SB_OPCODE_CALLC: {
            unsigned label = opcode.src[1].base.index[0].imm;
            unsigned tgsi_token_label = 0;
            ureg_CAL(ureg, &tgsi_token_label);
            Shader_add_call(&sx, label, tgsi_token_label);
         }
            break;
         case D3D10_SB_OPCODE_DISCARD:
            ureg_KILL(ureg);
            break;
         case D3D10_SB_OPCODE_BREAKC:
            ureg_BRK(ureg);
            break;
         default:
            assert(0);
            break;
         }
         ureg_ENDIF(ureg);
      }
         break;
      case D3D10_SB_OPCODE_LABEL: {
         unsigned label = opcode.src[0].base.index[0].imm;
         unsigned tgsi_inst_no = 0;
         if (inside_sub) {
            ureg_ENDSUB(ureg);
         }
         tgsi_inst_no = ureg_get_instruction_number(ureg);
         ureg_BGNSUB(ureg);
         inside_sub = TRUE;
         Shader_add_label(&sx, label, tgsi_inst_no);
      }
         break;
      case D3D10_SB_OPCODE_CALL: {
         unsigned label = opcode.src[0].base.index[0].imm;
         unsigned tgsi_token_label = 0;
         ureg_CAL(ureg, &tgsi_token_label);
         Shader_add_call(&sx, label, tgsi_token_label);
      }
         break;
      case D3D10_SB_OPCODE_EMIT:
         ureg_EMIT(ureg, ureg_imm1u(ureg, 0));
         break;
      case D3D10_SB_OPCODE_CUT:
         ureg_ENDPRIM(ureg, ureg_imm1u(ureg, 0));
         break;
      case D3D10_SB_OPCODE_EMITTHENCUT:
         ureg_EMIT(ureg, ureg_imm1u(ureg, 0));
         ureg_ENDPRIM(ureg, ureg_imm1u(ureg, 0));
         break;
      case D3D10_SB_OPCODE_DCL_INDEX_RANGE:
      case D3D10_SB_OPCODE_DCL_GLOBAL_FLAGS:
         /* Ignore */
         break;
      default:
         {
            uint i;
            struct ureg_dst dst[SHADER_MAX_DST_OPERANDS];
            struct ureg_src src[SHADER_MAX_SRC_OPERANDS];

            assert(ox->tgsi_opcode != TGSI_EXPAND);

            if (ox->tgsi_opcode == TGSI_LOG_UNSUPPORTED) {
               if (!shader_dumped) {
                  dx10_shader_dump_tokens(code);
                  shader_dumped = TRUE;
               }
               debug_printf("%s: unsupported opcode %i\n",
                            __FUNCTION__, ox->type);
               assert(ox->tgsi_opcode != TGSI_LOG_UNSUPPORTED);
            }

            /* Destination operands. */
            for (i = 0; i < opcode.num_dst; i++) {
               dst[i] = translate_dst_operand(&sx, &opcode.dst[i],
                                              opcode.saturate);
            }

            /* Source operands. */
            for (i = 0; i < opcode.num_src; i++) {
               src[i] = translate_src_operand(&sx, &opcode.src[i], ox->format);
            }

            /* Try to re-route output depth to Z channel. */
            if (opcode.dst[0].base.type == D3D10_SB_OPERAND_TYPE_OUTPUT_DEPTH) {
               LOG_UNSUPPORTED(opcode.type != D3D10_SB_OPCODE_MOV);
               dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_Z);
               src[0] = ureg_scalar(src[0], TGSI_SWIZZLE_X);
            }

            ureg_insn(ureg,
                      ox->tgsi_opcode,
                      dst,
                      opcode.num_dst,
                      src,
                      opcode.num_src, 0);
         }
      }

      Shader_opcode_free(&opcode);
   }

   if (inside_sub) {
      ureg_ENDSUB(ureg);
   }

   ureg_END(ureg);

   for (i = 0; i < sx.num_calls; ++i) {
      for (j = 0; j < sx.num_labels; ++j) {
         if (sx.calls[i].d3d_label == sx.labels[j].d3d_label) {
            ureg_fixup_label(sx.ureg,
                             sx.calls[i].tgsi_label_token,
                             sx.labels[j].tgsi_insn_no);
            break;
         }
      }
      ASSERT(j < sx.num_labels);
   }
   FREE(sx.labels);
   FREE(sx.calls);

   tokens = ureg_get_tokens(ureg, &nr_tokens);
   assert(tokens);
   ureg_destroy(ureg);

   if (st_debug & ST_DEBUG_TGSI) {
      tgsi_dump(tokens, 0);
   }

   return tokens;
}