text: /*
   * Fixed function pipeline replacement using GL_ATI_fragment_shader
   *
   * Copyright 2008 Stefan Dösinger(for CodeWeavers)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "config.h"
  #include "wine/port.h"
  
  #include <stdio.h>
  
  #include "wined3d_private.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  WINE_DECLARE_DEBUG_CHANNEL(d3d);
  
  /* Context activation for state handlers is done by the caller. */
  
  /* Some private defines, Constant associations, etc.
   * Env bump matrix and per stage constant should be independent,
   * a stage that bump maps can't read the per state constant
   */
  #define ATIFS_CONST_BUMPMAT(i)  (GL_CON_0_ATI + i)
  #define ATIFS_CONST_STAGE(i)    (GL_CON_0_ATI + i)
  #define ATIFS_CONST_TFACTOR     GL_CON_6_ATI
  
  enum atifs_constant_value
  {
      ATIFS_CONSTANT_UNUSED = 0,
      ATIFS_CONSTANT_BUMP,
      ATIFS_CONSTANT_TFACTOR,
      ATIFS_CONSTANT_STAGE,
  };
  
  /* GL_ATI_fragment_shader specific fixed function pipeline description. "Inherits" from the common one */
  struct atifs_ffp_desc
  {
      struct ffp_frag_desc parent;
      GLuint shader;
      unsigned int num_textures_used;
      enum atifs_constant_value constants[WINED3D_MAX_TEXTURES];
  };
  
  struct atifs_private_data
  {
      struct wine_rb_tree fragment_shaders; /* A rb-tree to track fragment pipeline replacement shaders */
  };
  
  struct atifs_context_private_data
  {
      const struct atifs_ffp_desc *last_shader;
  };
  
  static const char *debug_dstmod(GLuint mod) {
      switch(mod) {
          case GL_NONE:               return "GL_NONE";
          case GL_2X_BIT_ATI:         return "GL_2X_BIT_ATI";
          case GL_4X_BIT_ATI:         return "GL_4X_BIT_ATI";
          case GL_8X_BIT_ATI:         return "GL_8X_BIT_ATI";
          case GL_HALF_BIT_ATI:       return "GL_HALF_BIT_ATI";
          case GL_QUARTER_BIT_ATI:    return "GL_QUARTER_BIT_ATI";
          case GL_EIGHTH_BIT_ATI:     return "GL_EIGHTH_BIT_ATI";
          case GL_SATURATE_BIT_ATI:   return "GL_SATURATE_BIT_ATI";
          default:                    return "Unexpected modifier\n";
      }
  }
  
  static const char *debug_argmod(GLuint mod) {
      switch(mod) {
          case GL_NONE:
              return "GL_NONE";
  
          case GL_2X_BIT_ATI:
              return "GL_2X_BIT_ATI";
          case GL_COMP_BIT_ATI:
              return "GL_COMP_BIT_ATI";
          case GL_NEGATE_BIT_ATI:
              return "GL_NEGATE_BIT_ATI";
          case GL_BIAS_BIT_ATI:
              return "GL_BIAS_BIT_ATI";
  
          case GL_2X_BIT_ATI | GL_COMP_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_COMP_BIT_ATI";
          case GL_2X_BIT_ATI | GL_NEGATE_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_NEGATE_BIT_ATI";
          case GL_2X_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_BIAS_BIT_ATI";
          case GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI:
              return "GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI";
          case GL_COMP_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_COMP_BIT_ATI | GL_BIAS_BIT_ATI";
          case GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI";
  
          case GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI";
          case GL_2X_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI";
          case GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_BIAS_BIT_ATI";
          case GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI";
  
          case GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI:
              return "GL_2X_BIT_ATI | GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI | GL_BIAS_BIT_ATI";
  
          default:
              return "Unexpected argmod combination\n";
      }
  }
  static const char *debug_register(GLuint reg) {
      switch(reg) {
          case GL_REG_0_ATI:                  return "GL_REG_0_ATI";
          case GL_REG_1_ATI:                  return "GL_REG_1_ATI";
          case GL_REG_2_ATI:                  return "GL_REG_2_ATI";
          case GL_REG_3_ATI:                  return "GL_REG_3_ATI";
          case GL_REG_4_ATI:                  return "GL_REG_4_ATI";
          case GL_REG_5_ATI:                  return "GL_REG_5_ATI";
  
          case GL_CON_0_ATI:                  return "GL_CON_0_ATI";
          case GL_CON_1_ATI:                  return "GL_CON_1_ATI";
          case GL_CON_2_ATI:                  return "GL_CON_2_ATI";
          case GL_CON_3_ATI:                  return "GL_CON_3_ATI";
          case GL_CON_4_ATI:                  return "GL_CON_4_ATI";
          case GL_CON_5_ATI:                  return "GL_CON_5_ATI";
          case GL_CON_6_ATI:                  return "GL_CON_6_ATI";
          case GL_CON_7_ATI:                  return "GL_CON_7_ATI";
  
          case GL_ZERO:                       return "GL_ZERO";
          case GL_ONE:                        return "GL_ONE";
          case GL_PRIMARY_COLOR:              return "GL_PRIMARY_COLOR";
          case GL_SECONDARY_INTERPOLATOR_ATI: return "GL_SECONDARY_INTERPOLATOR_ATI";
  
          default:                            return "Unknown register\n";
      }
  }
  
  static const char *debug_swizzle(GLuint swizzle) {
      switch(swizzle) {
          case GL_SWIZZLE_STR_ATI:        return "GL_SWIZZLE_STR_ATI";
          case GL_SWIZZLE_STQ_ATI:        return "GL_SWIZZLE_STQ_ATI";
          case GL_SWIZZLE_STR_DR_ATI:     return "GL_SWIZZLE_STR_DR_ATI";
          case GL_SWIZZLE_STQ_DQ_ATI:     return "GL_SWIZZLE_STQ_DQ_ATI";
          default:                        return "unknown swizzle";
      }
  }
  
  static const char *debug_rep(GLuint rep) {
      switch(rep) {
          case GL_NONE:                   return "GL_NONE";
          case GL_RED:                    return "GL_RED";
          case GL_GREEN:                  return "GL_GREEN";
          case GL_BLUE:                   return "GL_BLUE";
          case GL_ALPHA:                  return "GL_ALPHA";
          default:                        return "unknown argrep";
      }
  }
  
  static const char *debug_op(GLuint op) {
      switch(op) {
          case GL_MOV_ATI:                return "GL_MOV_ATI";
          case GL_ADD_ATI:                return "GL_ADD_ATI";
          case GL_MUL_ATI:                return "GL_MUL_ATI";
          case GL_SUB_ATI:                return "GL_SUB_ATI";
          case GL_DOT3_ATI:               return "GL_DOT3_ATI";
          case GL_DOT4_ATI:               return "GL_DOT4_ATI";
          case GL_MAD_ATI:                return "GL_MAD_ATI";
          case GL_LERP_ATI:               return "GL_LERP_ATI";
          case GL_CND_ATI:                return "GL_CND_ATI";
          case GL_CND0_ATI:               return "GL_CND0_ATI";
          case GL_DOT2_ADD_ATI:           return "GL_DOT2_ADD_ATI";
          default:                        return "unexpected op";
      }
  }
  
  static const char *debug_mask(GLuint mask) {
      switch(mask) {
          case GL_NONE:                           return "GL_NONE";
          case GL_RED_BIT_ATI:                    return "GL_RED_BIT_ATI";
          case GL_GREEN_BIT_ATI:                  return "GL_GREEN_BIT_ATI";
          case GL_BLUE_BIT_ATI:                   return "GL_BLUE_BIT_ATI";
          case GL_RED_BIT_ATI | GL_GREEN_BIT_ATI: return "GL_RED_BIT_ATI | GL_GREEN_BIT_ATI";
          case GL_RED_BIT_ATI | GL_BLUE_BIT_ATI:  return "GL_RED_BIT_ATI | GL_BLUE_BIT_ATI";
          case GL_GREEN_BIT_ATI | GL_BLUE_BIT_ATI:return "GL_GREEN_BIT_ATI | GL_BLUE_BIT_ATI";
          case GL_RED_BIT_ATI | GL_GREEN_BIT_ATI | GL_BLUE_BIT_ATI:return "GL_RED_BIT_ATI | GL_GREEN_BIT_ATI | GL_BLUE_BIT_ATI";
          default:                                return "Unexpected writemask";
      }
  }
  
  static void wrap_op1(const struct wined3d_gl_info *gl_info, GLuint op, GLuint dst, GLuint dstMask, GLuint dstMod,
          GLuint arg1, GLuint arg1Rep, GLuint arg1Mod)
  {
      if(dstMask == GL_ALPHA) {
          TRACE("glAlphaFragmentOp1ATI(%s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod));
          GL_EXTCALL(glAlphaFragmentOp1ATI(op, dst, dstMod, arg1, arg1Rep, arg1Mod));
      } else {
          TRACE("glColorFragmentOp1ATI(%s, %s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst),
                debug_mask(dstMask), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod));
          GL_EXTCALL(glColorFragmentOp1ATI(op, dst, dstMask, dstMod, arg1, arg1Rep, arg1Mod));
      }
  }
  
  static void wrap_op2(const struct wined3d_gl_info *gl_info, GLuint op, GLuint dst, GLuint dstMask, GLuint dstMod,
          GLuint arg1, GLuint arg1Rep, GLuint arg1Mod, GLuint arg2, GLuint arg2Rep, GLuint arg2Mod)
  {
      if(dstMask == GL_ALPHA) {
          TRACE("glAlphaFragmentOp2ATI(%s, %s, %s, %s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod),
                debug_register(arg2), debug_rep(arg2Rep), debug_argmod(arg2Mod));
          GL_EXTCALL(glAlphaFragmentOp2ATI(op, dst, dstMod, arg1, arg1Rep, arg1Mod, arg2, arg2Rep, arg2Mod));
      } else {
          TRACE("glColorFragmentOp2ATI(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst),
                debug_mask(dstMask), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod),
                debug_register(arg2), debug_rep(arg2Rep), debug_argmod(arg2Mod));
          GL_EXTCALL(glColorFragmentOp2ATI(op, dst, dstMask, dstMod, arg1, arg1Rep, arg1Mod, arg2, arg2Rep, arg2Mod));
      }
  }
  
  static void wrap_op3(const struct wined3d_gl_info *gl_info, GLuint op, GLuint dst, GLuint dstMask, GLuint dstMod,
          GLuint arg1, GLuint arg1Rep, GLuint arg1Mod, GLuint arg2, GLuint arg2Rep, GLuint arg2Mod,
          GLuint arg3, GLuint arg3Rep, GLuint arg3Mod)
  {
      if(dstMask == GL_ALPHA) {
          /* Leave some free space to fit "GL_NONE, " in to align most alpha and color op lines */
          TRACE("glAlphaFragmentOp3ATI(%s, %s,          %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod),
                debug_register(arg2), debug_rep(arg2Rep), debug_argmod(arg2Mod),
                debug_register(arg3), debug_rep(arg3Rep), debug_argmod(arg3Mod));
          GL_EXTCALL(glAlphaFragmentOp3ATI(op, dst, dstMod,
                                           arg1, arg1Rep, arg1Mod,
                                           arg2, arg2Rep, arg2Mod,
                                           arg3, arg3Rep, arg3Mod));
      } else {
          TRACE("glColorFragmentOp3ATI(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)\n", debug_op(op), debug_register(dst),
                debug_mask(dstMask), debug_dstmod(dstMod),
                debug_register(arg1), debug_rep(arg1Rep), debug_argmod(arg1Mod),
                debug_register(arg2), debug_rep(arg2Rep), debug_argmod(arg2Mod),
                debug_register(arg3), debug_rep(arg3Rep), debug_argmod(arg3Mod));
          GL_EXTCALL(glColorFragmentOp3ATI(op, dst, dstMask, dstMod,
                                           arg1, arg1Rep, arg1Mod,
                                           arg2, arg2Rep, arg2Mod,
                                           arg3, arg3Rep, arg3Mod));
      }
  }
  
  static GLuint register_for_arg(DWORD arg, const struct wined3d_gl_info *gl_info,
          unsigned int stage, GLuint *mod, GLuint *rep, GLuint tmparg)
  {
      GLenum ret;
  
      if(mod) *mod = GL_NONE;
      if(arg == ARG_UNUSED)
      {
          if (rep) *rep = GL_NONE;
          return -1; /* This is the marker for unused registers */
      }
  
      switch(arg & WINED3DTA_SELECTMASK) {
          case WINED3DTA_DIFFUSE:
              ret = GL_PRIMARY_COLOR;
              break;
  
          case WINED3DTA_CURRENT:
              /* Note that using GL_REG_0_ATI for the passed on register is safe because
               * texture0 is read at stage0, so in the worst case it is read in the
               * instruction writing to reg0. Afterwards texture0 is not used any longer.
               * If we're reading from current
               */
              ret = stage ? GL_REG_0_ATI : GL_PRIMARY_COLOR;
              break;
  
          case WINED3DTA_TEXTURE:
              ret = GL_REG_0_ATI + stage;
              break;
  
          case WINED3DTA_TFACTOR:
              ret = ATIFS_CONST_TFACTOR;
              break;
  
          case WINED3DTA_SPECULAR:
              ret = GL_SECONDARY_INTERPOLATOR_ATI;
              break;
  
          case WINED3DTA_TEMP:
              ret = tmparg;
              break;
  
          case WINED3DTA_CONSTANT:
              ret = ATIFS_CONST_STAGE(stage);
              break;
  
          default:
              FIXME("Unknown source argument %d\n", arg);
              ret = GL_ZERO;
      }
  
      if(arg & WINED3DTA_COMPLEMENT) {
          if(mod) *mod |= GL_COMP_BIT_ATI;
      }
      if(arg & WINED3DTA_ALPHAREPLICATE) {
          if(rep) *rep = GL_ALPHA;
      } else {
          if(rep) *rep = GL_NONE;
      }
      return ret;
  }
  
  static GLuint find_tmpreg(const struct texture_stage_op op[WINED3D_MAX_TEXTURES])
  {
      int lowest_read = -1;
      int lowest_write = -1;
      int i;
      BOOL tex_used[WINED3D_MAX_TEXTURES];
  
      memset(tex_used, 0, sizeof(tex_used));
      for (i = 0; i < WINED3D_MAX_TEXTURES; ++i)
      {
          if (op[i].cop == WINED3D_TOP_DISABLE)
              break;
  
          if(lowest_read == -1 &&
            (op[i].carg1 == WINED3DTA_TEMP || op[i].carg2 == WINED3DTA_TEMP || op[i].carg0 == WINED3DTA_TEMP ||
             op[i].aarg1 == WINED3DTA_TEMP || op[i].aarg2 == WINED3DTA_TEMP || op[i].aarg0 == WINED3DTA_TEMP)) {
              lowest_read = i;
          }
  
          if (lowest_write == -1 && op[i].tmp_dst)
              lowest_write = i;
  
          if(op[i].carg1 == WINED3DTA_TEXTURE || op[i].carg2 == WINED3DTA_TEXTURE || op[i].carg0 == WINED3DTA_TEXTURE ||
             op[i].aarg1 == WINED3DTA_TEXTURE || op[i].aarg2 == WINED3DTA_TEXTURE || op[i].aarg0 == WINED3DTA_TEXTURE) {
              tex_used[i] = TRUE;
          }
      }
  
      /* Temp reg not read? We don't need it, return GL_NONE */
      if(lowest_read == -1) return GL_NONE;
  
      if(lowest_write >= lowest_read) {
          FIXME("Temp register read before being written\n");
      }
  
      if(lowest_write == -1) {
          /* This needs a test. Maybe we are supposed to return 0.0/0.0/0.0/0.0, or fail drawprim, or whatever */
          FIXME("Temp register read without being written\n");
          return GL_REG_1_ATI;
      } else if(lowest_write >= 1) {
          /* If we're writing to the temp reg at earliest in stage 1, we can use register 1 for the temp result.
           * there may be texture data stored in reg 1, but we do not need it any longer since stage 1 already
           * read it
           */
          return GL_REG_1_ATI;
      } else {
          /* Search for a free texture register. We have 6 registers available. GL_REG_0_ATI is already used
           * for the regular result
           */
          for(i = 1; i < 6; i++) {
              if(!tex_used[i]) {
                  return GL_REG_0_ATI + i;
              }
          }
          /* What to do here? Report it in ValidateDevice? */
          FIXME("Could not find a register for the temporary register\n");
          return 0;
      }
  }
  
  static const struct color_fixup_desc color_fixup_rg =
  {
      1, CHANNEL_SOURCE_X,
      1, CHANNEL_SOURCE_Y,
      0, CHANNEL_SOURCE_ONE,
      0, CHANNEL_SOURCE_ONE
  };
  static const struct color_fixup_desc color_fixup_rgl =
  {
      1, CHANNEL_SOURCE_X,
      1, CHANNEL_SOURCE_Y,
      0, CHANNEL_SOURCE_Z,
      0, CHANNEL_SOURCE_W
  };
  static const struct color_fixup_desc color_fixup_rgba =
  {
      1, CHANNEL_SOURCE_X,
      1, CHANNEL_SOURCE_Y,
      1, CHANNEL_SOURCE_Z,
      1, CHANNEL_SOURCE_W
  };
  
  static BOOL op_reads_texture(const struct texture_stage_op *op)
  {
      return (op->carg0 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || (op->carg1 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || (op->carg2 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || (op->aarg0 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || (op->aarg1 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || (op->aarg2 & WINED3DTA_SELECTMASK) == WINED3DTA_TEXTURE
              || op->cop == WINED3D_TOP_BLEND_TEXTURE_ALPHA;
  }
  
  static void atifs_color_fixup(const struct wined3d_gl_info *gl_info, struct color_fixup_desc fixup, GLuint reg)
  {
      if(is_same_fixup(fixup, color_fixup_rg))
      {
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_RED_BIT_ATI | GL_GREEN_BIT_ATI, GL_NONE,
                  reg, GL_NONE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI);
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_BLUE_BIT_ATI, GL_NONE,
                  GL_ONE, GL_NONE, GL_NONE);
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_ALPHA, GL_NONE,
                  GL_ONE, GL_NONE, GL_NONE);
      }
      else if(is_same_fixup(fixup, color_fixup_rgl))
      {
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_RED_BIT_ATI | GL_GREEN_BIT_ATI, GL_NONE,
                  reg, GL_NONE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI);
      }
      else if (is_same_fixup(fixup, color_fixup_rgba))
      {
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_NONE, GL_NONE,
                  reg, GL_NONE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI);
          wrap_op1(gl_info, GL_MOV_ATI, reg, GL_ALPHA, GL_NONE,
                  reg, GL_NONE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI);
      }
      else
      {
          /* Should not happen - atifs_color_fixup_supported refuses other fixups. */
          ERR("Unsupported color fixup.\n");
      }
  }
  
  static BOOL op_reads_tfactor(const struct texture_stage_op *op)
  {
      return (op->carg0 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || (op->carg1 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || (op->carg2 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || (op->aarg0 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || (op->aarg1 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || (op->aarg2 & WINED3DTA_SELECTMASK) == WINED3DTA_TFACTOR
              || op->cop == WINED3D_TOP_BLEND_FACTOR_ALPHA
              || op->aop == WINED3D_TOP_BLEND_FACTOR_ALPHA;
  }
  
  static BOOL op_reads_constant(const struct texture_stage_op *op)
  {
      return (op->carg0 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT
              || (op->carg1 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT
              || (op->carg2 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT
              || (op->aarg0 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT
              || (op->aarg1 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT
              || (op->aarg2 & WINED3DTA_SELECTMASK) == WINED3DTA_CONSTANT;
  }
  
  static GLuint gen_ati_shader(const struct texture_stage_op op[WINED3D_MAX_TEXTURES],
          const struct wined3d_gl_info *gl_info, enum atifs_constant_value *constants)
  {
      GLuint ret = GL_EXTCALL(glGenFragmentShadersATI(1));
      unsigned int stage;
      GLuint arg0, arg1, arg2, extrarg;
      GLuint dstmod, argmod0, argmod1, argmod2, argmodextra;
      GLuint rep0, rep1, rep2;
      GLuint swizzle;
      GLuint tmparg = find_tmpreg(op);
      GLuint dstreg;
      BOOL tfactor_used = FALSE;
  
      if(!ret) {
          ERR("Failed to generate a GL_ATI_fragment_shader shader id\n");
          return 0;
      }
      GL_EXTCALL(glBindFragmentShaderATI(ret));
      checkGLcall("GL_EXTCALL(glBindFragmentShaderATI(ret))");
  
      TRACE("glBeginFragmentShaderATI()\n");
      GL_EXTCALL(glBeginFragmentShaderATI());
      checkGLcall("GL_EXTCALL(glBeginFragmentShaderATI())");
  
      /* Pass 1: Generate sampling instructions for perturbation maps */
      for (stage = 0; stage < gl_info->limits.textures; ++stage)
      {
          if (op[stage].cop == WINED3D_TOP_DISABLE)
              break;
          if (op[stage].cop != WINED3D_TOP_BUMPENVMAP
                  && op[stage].cop != WINED3D_TOP_BUMPENVMAP_LUMINANCE)
              continue;
  
          constants[stage] = ATIFS_CONSTANT_BUMP;
  
          TRACE("glSampleMapATI(GL_REG_%d_ATI, GL_TEXTURE_%d_ARB, GL_SWIZZLE_STR_ATI)\n",
                stage, stage);
          GL_EXTCALL(glSampleMapATI(GL_REG_0_ATI + stage, GL_TEXTURE0_ARB + stage, GL_SWIZZLE_STR_ATI));
          if (op[stage + 1].projected == WINED3D_PROJECTION_NONE)
              swizzle = GL_SWIZZLE_STR_ATI;
          else if (op[stage + 1].projected == WINED3D_PROJECTION_COUNT4)
              swizzle = GL_SWIZZLE_STQ_DQ_ATI;
          else
              swizzle = GL_SWIZZLE_STR_DR_ATI;
          TRACE("glPassTexCoordATI(GL_REG_%d_ATI, GL_TEXTURE_%d_ARB, %s)\n",
                stage + 1, stage + 1, debug_swizzle(swizzle));
          GL_EXTCALL(glPassTexCoordATI(GL_REG_0_ATI + stage + 1,
                     GL_TEXTURE0_ARB + stage + 1,
                     swizzle));
      }
  
      /* Pass 2: Generate perturbation calculations */
      for (stage = 0; stage < gl_info->limits.textures; ++stage)
      {
          GLuint argmodextra_x, argmodextra_y;
          struct color_fixup_desc fixup;
  
          if (op[stage].cop == WINED3D_TOP_DISABLE)
              break;
          if (op[stage].cop != WINED3D_TOP_BUMPENVMAP
                  && op[stage].cop != WINED3D_TOP_BUMPENVMAP_LUMINANCE)
              continue;
  
          fixup = op[stage].color_fixup;
          if (fixup.x_source != CHANNEL_SOURCE_X || fixup.y_source != CHANNEL_SOURCE_Y)
          {
              FIXME("Swizzles not implemented\n");
              argmodextra_x = GL_NONE;
              argmodextra_y = GL_NONE;
          }
          else
          {
              /* Nice thing, we get the color correction for free :-) */
              argmodextra_x = fixup.x_sign_fixup ? GL_2X_BIT_ATI | GL_BIAS_BIT_ATI : GL_NONE;
              argmodextra_y = fixup.y_sign_fixup ? GL_2X_BIT_ATI | GL_BIAS_BIT_ATI : GL_NONE;
          }
  
          wrap_op3(gl_info, GL_DOT2_ADD_ATI, GL_REG_0_ATI + stage + 1, GL_RED_BIT_ATI, GL_NONE,
                   GL_REG_0_ATI + stage, GL_NONE, argmodextra_x,
                   ATIFS_CONST_BUMPMAT(stage), GL_NONE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI,
                   GL_REG_0_ATI + stage + 1, GL_RED, GL_NONE);
  
          /* Don't use GL_DOT2_ADD_ATI here because we cannot configure it to read the blue and alpha
           * component of the bump matrix. Instead do this with two MADs:
           *
           * coord.a = tex.r * bump.b + coord.g
           * coord.g = tex.g * bump.a + coord.a
           *
           * The first instruction writes to alpha so it can be coissued with the above DOT2_ADD.
           * coord.a is unused. If the perturbed texture is projected, this was already handled
           * in the glPassTexCoordATI above.
           */
          wrap_op3(gl_info, GL_MAD_ATI, GL_REG_0_ATI + stage + 1, GL_ALPHA, GL_NONE,
                   GL_REG_0_ATI + stage, GL_RED, argmodextra_y,
                   ATIFS_CONST_BUMPMAT(stage), GL_BLUE, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI,
                   GL_REG_0_ATI + stage + 1, GL_GREEN, GL_NONE);
          wrap_op3(gl_info, GL_MAD_ATI, GL_REG_0_ATI + stage + 1, GL_GREEN_BIT_ATI, GL_NONE,
                   GL_REG_0_ATI + stage, GL_GREEN, argmodextra_y,
                   ATIFS_CONST_BUMPMAT(stage), GL_ALPHA, GL_2X_BIT_ATI | GL_BIAS_BIT_ATI,
                   GL_REG_0_ATI + stage + 1, GL_ALPHA, GL_NONE);
      }
  
      /* Pass 3: Generate sampling instructions for regular textures */
      for (stage = 0; stage < gl_info->limits.textures; ++stage)
      {
          if (op[stage].cop == WINED3D_TOP_DISABLE)
              break;
  
          if (op[stage].projected == WINED3D_PROJECTION_NONE)
              swizzle = GL_SWIZZLE_STR_ATI;
          else if (op[stage].projected == WINED3D_PROJECTION_COUNT3)
              swizzle = GL_SWIZZLE_STR_DR_ATI;
          else
              swizzle = GL_SWIZZLE_STQ_DQ_ATI;
  
          if (op_reads_texture(&op[stage]))
          {
              if (stage > 0
                      && (op[stage - 1].cop == WINED3D_TOP_BUMPENVMAP
                      || op[stage - 1].cop == WINED3D_TOP_BUMPENVMAP_LUMINANCE))
              {
                  TRACE("glSampleMapATI(GL_REG_%d_ATI, GL_REG_%d_ATI, GL_SWIZZLE_STR_ATI)\n",
                        stage, stage);
                  GL_EXTCALL(glSampleMapATI(GL_REG_0_ATI + stage,
                             GL_REG_0_ATI + stage,
                             GL_SWIZZLE_STR_ATI));
              } else {
                  TRACE("glSampleMapATI(GL_REG_%d_ATI, GL_TEXTURE_%d_ARB, %s)\n",
                      stage, stage, debug_swizzle(swizzle));
                  GL_EXTCALL(glSampleMapATI(GL_REG_0_ATI + stage,
                                          GL_TEXTURE0_ARB + stage,
                                          swizzle));
              }
          }
      }
  
      /* Pass 4: Generate the arithmetic instructions */
      for (stage = 0; stage < WINED3D_MAX_TEXTURES; ++stage)
      {
          if (op[stage].cop == WINED3D_TOP_DISABLE)
          {
              if (!stage)
              {
                  /* Handle complete texture disabling gracefully */
                  wrap_op1(gl_info, GL_MOV_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
                           GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
                  wrap_op1(gl_info, GL_MOV_ATI, GL_REG_0_ATI, GL_ALPHA, GL_NONE,
                           GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
              }
              break;
          }
  
          if (op[stage].tmp_dst)
          {
              /* If we're writing to D3DTA_TEMP, but never reading from it we
               * don't have to write there in the first place. Skip the entire
               * stage, this saves some GPU time. */
              if (tmparg == GL_NONE)
                  continue;
  
              dstreg = tmparg;
          }
          else
          {
              dstreg = GL_REG_0_ATI;
          }
  
          if (op[stage].cop == WINED3D_TOP_BUMPENVMAP || op[stage].cop == WINED3D_TOP_BUMPENVMAP_LUMINANCE)
          {
              /* Those are handled in the first pass of the shader (generation pass 1 and 2) already */
              continue;
          }
  
          arg0 = register_for_arg(op[stage].carg0, gl_info, stage, &argmod0, &rep0, tmparg);
          arg1 = register_for_arg(op[stage].carg1, gl_info, stage, &argmod1, &rep1, tmparg);
          arg2 = register_for_arg(op[stage].carg2, gl_info, stage, &argmod2, &rep2, tmparg);
          dstmod = GL_NONE;
          argmodextra = GL_NONE;
          extrarg = GL_NONE;
  
          if (op_reads_tfactor(&op[stage]))
              tfactor_used = TRUE;
  
          if (op_reads_constant(&op[stage]))
          {
              if (constants[stage] != ATIFS_CONSTANT_UNUSED)
                  FIXME("Constant %u already used.\n", stage);
              constants[stage] = ATIFS_CONSTANT_STAGE;
          }
  
          if (op_reads_texture(&op[stage]) && !is_identity_fixup(op[stage].color_fixup))
              atifs_color_fixup(gl_info, op[stage].color_fixup, GL_REG_0_ATI + stage);
  
          switch (op[stage].cop)
          {
              case WINED3D_TOP_SELECT_ARG2:
                  arg1 = arg2;
                  argmod1 = argmod2;
                  rep1 = rep2;
                  /* fall through */
              case WINED3D_TOP_SELECT_ARG1:
                  wrap_op1(gl_info, GL_MOV_ATI, dstreg, GL_NONE, GL_NONE,
                           arg1, rep1, argmod1);
                  break;
  
              case WINED3D_TOP_MODULATE_4X:
                  if(dstmod == GL_NONE) dstmod = GL_4X_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE_2X:
                  if(dstmod == GL_NONE) dstmod = GL_2X_BIT_ATI;
                  dstmod |= GL_SATURATE_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE:
                  wrap_op2(gl_info, GL_MUL_ATI, dstreg, GL_NONE, dstmod,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmod2);
                  break;
  
              case WINED3D_TOP_ADD_SIGNED_2X:
                  dstmod = GL_2X_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_ADD_SIGNED:
                  argmodextra = GL_BIAS_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_ADD:
                  dstmod |= GL_SATURATE_BIT_ATI;
                  wrap_op2(gl_info, GL_ADD_ATI, GL_REG_0_ATI, GL_NONE, dstmod,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmodextra | argmod2);
                  break;
  
              case WINED3D_TOP_SUBTRACT:
                  dstmod |= GL_SATURATE_BIT_ATI;
                  wrap_op2(gl_info, GL_SUB_ATI, dstreg, GL_NONE, dstmod,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmod2);
                  break;
  
              case WINED3D_TOP_ADD_SMOOTH:
                  argmodextra = argmod1 & GL_COMP_BIT_ATI ? argmod1 & ~GL_COMP_BIT_ATI : argmod1 | GL_COMP_BIT_ATI;
                  /* Dst = arg1 + * arg2(1 -arg 1)
                   *     = arg2 * (1 - arg1) + arg1
                   */
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_NONE, GL_SATURATE_BIT_ATI,
                           arg2, rep2, argmod2,
                           arg1, rep1, argmodextra,
                           arg1, rep1, argmod1);
                  break;
  
              case WINED3D_TOP_BLEND_CURRENT_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_CURRENT, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_FACTOR_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_TFACTOR, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_TEXTURE_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_TEXTURE, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_DIFFUSE_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_DIFFUSE, gl_info, stage, NULL, NULL, -1);
                  wrap_op3(gl_info, GL_LERP_ATI, dstreg, GL_NONE, GL_NONE,
                           extrarg, GL_ALPHA, GL_NONE,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmod2);
                  break;
  
              case WINED3D_TOP_BLEND_TEXTURE_ALPHA_PM:
                  arg0 = register_for_arg(WINED3DTA_TEXTURE, gl_info, stage, NULL, NULL, -1);
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_NONE, GL_NONE,
                           arg2, rep2,  argmod2,
                           arg0, GL_ALPHA, GL_COMP_BIT_ATI,
                           arg1, rep1,  argmod1);
                  break;
  
              /* D3DTOP_PREMODULATE ???? */
  
              case WINED3D_TOP_MODULATE_INVALPHA_ADD_COLOR:
                  argmodextra = argmod1 & GL_COMP_BIT_ATI ? argmod1 & ~GL_COMP_BIT_ATI : argmod1 | GL_COMP_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE_ALPHA_ADD_COLOR:
                  if (!argmodextra)
                      argmodextra = argmod1;
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_NONE, GL_SATURATE_BIT_ATI,
                           arg2, rep2,  argmod2,
                           arg1, GL_ALPHA, argmodextra,
                           arg1, rep1,  argmod1);
                  break;
  
              case WINED3D_TOP_MODULATE_INVCOLOR_ADD_ALPHA:
                  argmodextra = argmod1 & GL_COMP_BIT_ATI ? argmod1 & ~GL_COMP_BIT_ATI : argmod1 | GL_COMP_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE_COLOR_ADD_ALPHA:
                  if (!argmodextra)
                      argmodextra = argmod1;
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_NONE, GL_SATURATE_BIT_ATI,
                           arg2, rep2,  argmod2,
                           arg1, rep1,  argmodextra,
                           arg1, GL_ALPHA, argmod1);
                  break;
  
              case WINED3D_TOP_DOTPRODUCT3:
                  wrap_op2(gl_info, GL_DOT3_ATI, dstreg, GL_NONE, GL_4X_BIT_ATI | GL_SATURATE_BIT_ATI,
                           arg1, rep1, argmod1 | GL_BIAS_BIT_ATI,
                           arg2, rep2, argmod2 | GL_BIAS_BIT_ATI);
                  break;
  
              case WINED3D_TOP_MULTIPLY_ADD:
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_NONE, GL_SATURATE_BIT_ATI,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmod2,
                           arg0, rep0, argmod0);
                  break;
  
              case WINED3D_TOP_LERP:
                  wrap_op3(gl_info, GL_LERP_ATI, dstreg, GL_NONE, GL_NONE,
                           arg0, rep0, argmod0,
                           arg1, rep1, argmod1,
                           arg2, rep2, argmod2);
                  break;
  
              default: FIXME("Unhandled color operation %d on stage %d\n", op[stage].cop, stage);
          }
  
          arg0 = register_for_arg(op[stage].aarg0, gl_info, stage, &argmod0, NULL, tmparg);
          arg1 = register_for_arg(op[stage].aarg1, gl_info, stage, &argmod1, NULL, tmparg);
          arg2 = register_for_arg(op[stage].aarg2, gl_info, stage, &argmod2, NULL, tmparg);
          dstmod = GL_NONE;
          argmodextra = GL_NONE;
          extrarg = GL_NONE;
  
          switch (op[stage].aop)
          {
              case WINED3D_TOP_DISABLE:
                  /* Get the primary color to the output if on stage 0, otherwise leave register 0 untouched */
                  if (!stage)
                  {
                      wrap_op1(gl_info, GL_MOV_ATI, GL_REG_0_ATI, GL_ALPHA, GL_NONE,
                               GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
                  }
                  break;
  
              case WINED3D_TOP_SELECT_ARG2:
                  arg1 = arg2;
                  argmod1 = argmod2;
                  /* fall through */
              case WINED3D_TOP_SELECT_ARG1:
                  wrap_op1(gl_info, GL_MOV_ATI, dstreg, GL_ALPHA, GL_NONE,
                           arg1, GL_NONE, argmod1);
                  break;
  
              case WINED3D_TOP_MODULATE_4X:
                  if (dstmod == GL_NONE)
                      dstmod = GL_4X_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE_2X:
                  if (dstmod == GL_NONE)
                      dstmod = GL_2X_BIT_ATI;
                  dstmod |= GL_SATURATE_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_MODULATE:
                  wrap_op2(gl_info, GL_MUL_ATI, dstreg, GL_ALPHA, dstmod,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmod2);
                  break;
  
              case WINED3D_TOP_ADD_SIGNED_2X:
                  dstmod = GL_2X_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_ADD_SIGNED:
                  argmodextra = GL_BIAS_BIT_ATI;
                  /* fall through */
              case WINED3D_TOP_ADD:
                  dstmod |= GL_SATURATE_BIT_ATI;
                  wrap_op2(gl_info, GL_ADD_ATI, dstreg, GL_ALPHA, dstmod,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmodextra | argmod2);
                  break;
  
              case WINED3D_TOP_SUBTRACT:
                  dstmod |= GL_SATURATE_BIT_ATI;
                  wrap_op2(gl_info, GL_SUB_ATI, dstreg, GL_ALPHA, dstmod,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmod2);
                  break;
  
              case WINED3D_TOP_ADD_SMOOTH:
                  argmodextra = argmod1 & GL_COMP_BIT_ATI ? argmod1 & ~GL_COMP_BIT_ATI : argmod1 | GL_COMP_BIT_ATI;
                  /* Dst = arg1 + * arg2(1 -arg 1)
                   *     = arg2 * (1 - arg1) + arg1
                   */
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_ALPHA, GL_SATURATE_BIT_ATI,
                           arg2, GL_NONE, argmod2,
                           arg1, GL_NONE, argmodextra,
                           arg1, GL_NONE, argmod1);
                  break;
  
              case WINED3D_TOP_BLEND_CURRENT_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_CURRENT, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_FACTOR_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_TFACTOR, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_TEXTURE_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_TEXTURE, gl_info, stage, NULL, NULL, -1);
                  /* fall through */
              case WINED3D_TOP_BLEND_DIFFUSE_ALPHA:
                  if (extrarg == GL_NONE)
                      extrarg = register_for_arg(WINED3DTA_DIFFUSE, gl_info, stage, NULL, NULL, -1);
                  wrap_op3(gl_info, GL_LERP_ATI, dstreg, GL_ALPHA, GL_NONE,
                           extrarg, GL_ALPHA, GL_NONE,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmod2);
                  break;
  
              case WINED3D_TOP_BLEND_TEXTURE_ALPHA_PM:
                  arg0 = register_for_arg(WINED3DTA_TEXTURE, gl_info, stage, NULL, NULL, -1);
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_ALPHA, GL_NONE,
                           arg2, GL_NONE,  argmod2,
                           arg0, GL_ALPHA, GL_COMP_BIT_ATI,
                           arg1, GL_NONE,  argmod1);
                  break;
  
              /* D3DTOP_PREMODULATE ???? */
  
              case WINED3D_TOP_DOTPRODUCT3:
                  wrap_op2(gl_info, GL_DOT3_ATI, dstreg, GL_ALPHA, GL_4X_BIT_ATI | GL_SATURATE_BIT_ATI,
                           arg1, GL_NONE, argmod1 | GL_BIAS_BIT_ATI,
                           arg2, GL_NONE, argmod2 | GL_BIAS_BIT_ATI);
                  break;
  
              case WINED3D_TOP_MULTIPLY_ADD:
                  wrap_op3(gl_info, GL_MAD_ATI, dstreg, GL_ALPHA, GL_SATURATE_BIT_ATI,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmod2,
                           arg0, GL_NONE, argmod0);
                  break;
  
              case WINED3D_TOP_LERP:
                  wrap_op3(gl_info, GL_LERP_ATI, dstreg, GL_ALPHA, GL_SATURATE_BIT_ATI,
                           arg1, GL_NONE, argmod1,
                           arg2, GL_NONE, argmod2,
                           arg0, GL_NONE, argmod0);
                  break;
  
              case WINED3D_TOP_MODULATE_INVALPHA_ADD_COLOR:
              case WINED3D_TOP_MODULATE_ALPHA_ADD_COLOR:
              case WINED3D_TOP_MODULATE_COLOR_ADD_ALPHA:
              case WINED3D_TOP_MODULATE_INVCOLOR_ADD_ALPHA:
              case WINED3D_TOP_BUMPENVMAP:
              case WINED3D_TOP_BUMPENVMAP_LUMINANCE:
                  ERR("Application uses an invalid alpha operation\n");
                  break;
  
              default: FIXME("Unhandled alpha operation %d on stage %d\n", op[stage].aop, stage);
          }
      }
  
      if (tfactor_used && constants[ATIFS_CONST_TFACTOR - GL_CON_0_ATI] != ATIFS_CONSTANT_UNUSED)
          FIXME("Texture factor constant already used.\n");
      constants[ATIFS_CONST_TFACTOR - GL_CON_0_ATI] = ATIFS_CONSTANT_TFACTOR;
  
      /* Assign unused constants to avoid reloading due to unused <-> bump matrix switches. */
      for (stage = 0; stage < WINED3D_MAX_TEXTURES; ++stage)
      {
          if (constants[stage] == ATIFS_CONSTANT_UNUSED)
              constants[stage] = ATIFS_CONSTANT_BUMP;
      }
  
      TRACE("glEndFragmentShaderATI()\n");
      GL_EXTCALL(glEndFragmentShaderATI());
      checkGLcall("GL_EXTCALL(glEndFragmentShaderATI())");
      return ret;
  }
  
  static void atifs_tfactor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      struct atifs_context_private_data *ctx_priv = context->fragment_pipe_data;
      struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
      const struct wined3d_gl_info *gl_info = context_gl->gl_info;
      struct wined3d_color color;
  
      if (!ctx_priv->last_shader
              || ctx_priv->last_shader->constants[ATIFS_CONST_TFACTOR - GL_CON_0_ATI] != ATIFS_CONSTANT_TFACTOR)
          return;
  
      wined3d_color_from_d3dcolor(&color, state->render_states[WINED3D_RS_TEXTUREFACTOR]);
      GL_EXTCALL(glSetFragmentShaderConstantATI(ATIFS_CONST_TFACTOR, &color.r));
      checkGLcall("glSetFragmentShaderConstantATI(ATIFS_CONST_TFACTOR, &color.r)");
  }
  
  static void set_bumpmat(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      DWORD stage = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
      struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
      const struct wined3d_gl_info *gl_info = context_gl->gl_info;
      float mat[2][2];
      struct atifs_context_private_data *ctx_priv = context->fragment_pipe_data;
  
      if (!ctx_priv->last_shader
              || ctx_priv->last_shader->constants[stage] != ATIFS_CONSTANT_BUMP)
          return;
  
      mat[0][0] = *((float *)&state->texture_states[stage][WINED3D_TSS_BUMPENV_MAT00]);
      mat[1][0] = *((float *)&state->texture_states[stage][WINED3D_TSS_BUMPENV_MAT01]);
      mat[0][1] = *((float *)&state->texture_states[stage][WINED3D_TSS_BUMPENV_MAT10]);
      mat[1][1] = *((float *)&state->texture_states[stage][WINED3D_TSS_BUMPENV_MAT11]);
      /* GL_ATI_fragment_shader allows only constants from 0.0 to 1.0, but the bumpmat
       * constants can be in any range. While they should stay between [-1.0 and 1.0] because
       * Shader Model 1.x pixel shaders are clamped to that range negative values are used occasionally,
       * for example by our d3d9 test. So to get negative values scale -1;1 to 0;1 and undo that in the
       * shader(it is free). This might potentially reduce precision. However, if the hardware does
       * support proper floats it shouldn't, and if it doesn't we can't get anything better anyway. */
      mat[0][0] = (mat[0][0] + 1.0f) * 0.5f;
      mat[1][0] = (mat[1][0] + 1.0f) * 0.5f;
      mat[0][1] = (mat[0][1] + 1.0f) * 0.5f;
      mat[1][1] = (mat[1][1] + 1.0f) * 0.5f;
      GL_EXTCALL(glSetFragmentShaderConstantATI(ATIFS_CONST_BUMPMAT(stage), (float *) mat));
      checkGLcall("glSetFragmentShaderConstantATI(ATIFS_CONST_BUMPMAT(stage), mat)");
  }
  
  static void atifs_stage_constant(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      DWORD stage = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
      struct atifs_context_private_data *ctx_priv = context->fragment_pipe_data;
      struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
      const struct wined3d_gl_info *gl_info = context_gl->gl_info;
      struct wined3d_color color;
  
      if (!ctx_priv->last_shader
              || ctx_priv->last_shader->constants[stage] != ATIFS_CONSTANT_STAGE)
          return;
  
      wined3d_color_from_d3dcolor(&color, state->texture_states[stage][WINED3D_TSS_CONSTANT]);
      GL_EXTCALL(glSetFragmentShaderConstantATI(ATIFS_CONST_STAGE(stage), &color.r));
      checkGLcall("glSetFragmentShaderConstantATI(ATIFS_CONST_STAGE(stage), &color.r)");
  }
  
  static void set_tex_op_atifs(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      struct atifs_context_private_data *ctx_priv = context->fragment_pipe_data;
      const struct atifs_ffp_desc *desc, *last_shader = ctx_priv->last_shader;
      struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
      const struct wined3d_d3d_info *d3d_info = context->d3d_info;
      const struct wined3d_gl_info *gl_info = context_gl->gl_info;
      const struct wined3d_device *device = context->device;
      struct atifs_private_data *priv = device->fragment_priv;
      struct ffp_frag_settings settings;
      DWORD mapped_stage;
      unsigned int i;
  
      gen_ffp_frag_op(context, state, &settings, TRUE);
      desc = (const struct atifs_ffp_desc *)find_ffp_frag_shader(&priv->fragment_shaders, &settings);
      if (!desc)
      {
          struct atifs_ffp_desc *new_desc;
  
          if (!(new_desc = heap_alloc_zero(sizeof(*new_desc))))
          {
              ERR("Out of memory\n");
              return;
          }
          new_desc->num_textures_used = 0;
          for (i = 0; i < d3d_info->limits.ffp_blend_stages; ++i)
          {
              if (settings.op[i].cop == WINED3D_TOP_DISABLE)
                  break;
              ++new_desc->num_textures_used;
          }
  
          new_desc->parent.settings = settings;
          new_desc->shader = gen_ati_shader(settings.op, gl_info, new_desc->constants);
          add_ffp_frag_shader(&priv->fragment_shaders, &new_desc->parent);
          TRACE("Allocated fixed function replacement shader descriptor %p.\n", new_desc);
          desc = new_desc;
      }
  
      /* GL_ATI_fragment_shader depends on the GL_TEXTURE_xD enable settings. Update the texture stages
       * used by this shader
       */
      for (i = 0; i < desc->num_textures_used; ++i)
      {
          mapped_stage = context_gl->tex_unit_map[i];
          if (mapped_stage != WINED3D_UNMAPPED_STAGE)
          {
              wined3d_context_gl_active_texture(context_gl, gl_info, mapped_stage);
              texture_activate_dimensions(state->textures[i], gl_info);
          }
      }
  
      GL_EXTCALL(glBindFragmentShaderATI(desc->shader));
      ctx_priv->last_shader = desc;
  
      for (i = 0; i < WINED3D_MAX_TEXTURES; i++)
      {
          if (last_shader && last_shader->constants[i] == desc->constants[i])
              continue;
  
          switch (desc->constants[i])
          {
              case ATIFS_CONSTANT_BUMP:
                  set_bumpmat(context, state, STATE_TEXTURESTAGE(i, WINED3D_TSS_BUMPENV_MAT00));
                  break;
  
              case ATIFS_CONSTANT_TFACTOR:
                  atifs_tfactor(context, state, STATE_RENDER(WINED3D_RS_TEXTUREFACTOR));
                  break;
  
              case ATIFS_CONSTANT_STAGE:
                  atifs_stage_constant(context, state, STATE_TEXTURESTAGE(i, WINED3D_TSS_CONSTANT));
                  break;
  
              default:
                  ERR("Unexpected constant type %u.\n", desc->constants[i]);
          }
      }
  }
  
  static void textransform(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      if (!isStateDirty(context, STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL)))
          set_tex_op_atifs(context, state, state_id);
  }
  
  static void atifs_srgbwriteenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
  {
      if (state->render_states[WINED3D_RS_SRGBWRITEENABLE])
          WARN("sRGB writes are not supported by this fragment pipe.\n");
  }
  
  static const struct wined3d_state_entry_template atifs_fragmentstate_template[] =
  {
      {STATE_RENDER(WINED3D_RS_TEXTUREFACTOR),              { STATE_RENDER(WINED3D_RS_TEXTUREFACTOR),             atifs_tfactor           }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_ALPHAFUNC),                  { STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),           NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_ALPHAREF),                   { STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),           NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),            { STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),           state_alpha_test        }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_COLORKEYENABLE),             { STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),           NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGCOLOR),                   { STATE_RENDER(WINED3D_RS_FOGCOLOR),                  state_fogcolor          }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGDENSITY),                 { STATE_RENDER(WINED3D_RS_FOGDENSITY),                state_fogdensity        }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGENABLE),                  { STATE_RENDER(WINED3D_RS_FOGENABLE),                 state_fog_fragpart      }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGTABLEMODE),               { STATE_RENDER(WINED3D_RS_FOGENABLE),                 NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGVERTEXMODE),              { STATE_RENDER(WINED3D_RS_FOGENABLE),                 NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGSTART),                   { STATE_RENDER(WINED3D_RS_FOGSTART),                  state_fogstartend       }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_FOGEND),                     { STATE_RENDER(WINED3D_RS_FOGSTART),                  NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE),            { STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE),           atifs_srgbwriteenable   }, WINED3D_GL_EXT_NONE             },
      {STATE_COLOR_KEY,                                     { STATE_COLOR_KEY,                                    state_nop               }, WINED3D_GL_EXT_NONE             },
      {STATE_RENDER(WINED3D_RS_SHADEMODE),                  { STATE_RENDER(WINED3D_RS_SHADEMODE),                 state_shademode         }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(0, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(0, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(1, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(1, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(2, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(2, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(3, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(3, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(4, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(4, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(5, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(5, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(6, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(6, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_COLOR_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_COLOR_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_COLOR_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_COLOR_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_ALPHA_OP),         { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_ALPHA_ARG1),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_ALPHA_ARG2),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_ALPHA_ARG0),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_RESULT_ARG),       { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT00),    { STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT00),   set_bumpmat             }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT01),    { STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT10),    { STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT11),    { STATE_TEXTURESTAGE(7, WINED3D_TSS_BUMPENV_MAT00),   NULL                    }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7, WINED3D_TSS_CONSTANT),         { STATE_TEXTURESTAGE(7, WINED3D_TSS_CONSTANT),        atifs_stage_constant    }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(0),                                   { STATE_SAMPLER(0),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(1),                                   { STATE_SAMPLER(1),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(2),                                   { STATE_SAMPLER(2),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(3),                                   { STATE_SAMPLER(3),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(4),                                   { STATE_SAMPLER(4),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(5),                                   { STATE_SAMPLER(5),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(6),                                   { STATE_SAMPLER(6),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      { STATE_SAMPLER(7),                                   { STATE_SAMPLER(7),                                   sampler_texdim          }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(0,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(0, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(1,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(1, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(2,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(2, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(3,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(3, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(4,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(4, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(5,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(5, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(6,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(6, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_TEXTURESTAGE(7,WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), {STATE_TEXTURESTAGE(7, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS), textransform      }, WINED3D_GL_EXT_NONE             },
      {STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),             { STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),            set_tex_op_atifs        }, WINED3D_GL_EXT_NONE             },
      {0 /* Terminate */,                                   { 0,                                                  0                       }, WINED3D_GL_EXT_NONE             },
  };
  
  /* Context activation is done by the caller. */
  static void atifs_enable(const struct wined3d_context *context, BOOL enable)
  {
      const struct wined3d_gl_info *gl_info = wined3d_context_gl_const(context)->gl_info;
  
      if (enable)
      {
          gl_info->gl_ops.gl.p_glEnable(GL_FRAGMENT_SHADER_ATI);
          checkGLcall("glEnable(GL_FRAGMENT_SHADER_ATI)");
      }
      else
      {
          gl_info->gl_ops.gl.p_glDisable(GL_FRAGMENT_SHADER_ATI);
          checkGLcall("glDisable(GL_FRAGMENT_SHADER_ATI)");
      }
  }
  
  static void atifs_get_caps(const struct wined3d_adapter *adapter, struct fragment_caps *caps)
  {
      caps->wined3d_caps = WINED3D_FRAGMENT_CAP_PROJ_CONTROL;
      caps->PrimitiveMiscCaps = WINED3DPMISCCAPS_TSSARGTEMP               |
              WINED3DPMISCCAPS_PERSTAGECONSTANT;
      caps->TextureOpCaps =  WINED3DTEXOPCAPS_DISABLE                     |
                             WINED3DTEXOPCAPS_SELECTARG1                  |
                             WINED3DTEXOPCAPS_SELECTARG2                  |
                             WINED3DTEXOPCAPS_MODULATE4X                  |
                             WINED3DTEXOPCAPS_MODULATE2X                  |
                             WINED3DTEXOPCAPS_MODULATE                    |
                             WINED3DTEXOPCAPS_ADDSIGNED2X                 |
                             WINED3DTEXOPCAPS_ADDSIGNED                   |
                             WINED3DTEXOPCAPS_ADD                         |
                             WINED3DTEXOPCAPS_SUBTRACT                    |
                             WINED3DTEXOPCAPS_ADDSMOOTH                   |
                             WINED3DTEXOPCAPS_BLENDCURRENTALPHA           |
                             WINED3DTEXOPCAPS_BLENDFACTORALPHA            |
                             WINED3DTEXOPCAPS_BLENDTEXTUREALPHA           |
                             WINED3DTEXOPCAPS_BLENDDIFFUSEALPHA           |
                             WINED3DTEXOPCAPS_BLENDTEXTUREALPHAPM         |
                             WINED3DTEXOPCAPS_MODULATEALPHA_ADDCOLOR      |
                             WINED3DTEXOPCAPS_MODULATECOLOR_ADDALPHA      |
                             WINED3DTEXOPCAPS_MODULATEINVCOLOR_ADDALPHA   |
                             WINED3DTEXOPCAPS_MODULATEINVALPHA_ADDCOLOR   |
                             WINED3DTEXOPCAPS_DOTPRODUCT3                 |
                             WINED3DTEXOPCAPS_MULTIPLYADD                 |
                             WINED3DTEXOPCAPS_LERP                        |
                             WINED3DTEXOPCAPS_BUMPENVMAP;
  
      /* TODO: Implement WINED3DTEXOPCAPS_BUMPENVMAPLUMINANCE
      and WINED3DTEXOPCAPS_PREMODULATE */
  
      /* GL_ATI_fragment_shader always supports 6 textures, which was the limit on r200 cards
       * which this extension is exclusively focused on(later cards have GL_ARB_fragment_program).
       * If the current card has more than 8 fixed function textures in OpenGL's regular fixed
       * function pipeline then the ATI_fragment_shader backend imposes a stricter limit. This
       * shouldn't be too hard since Nvidia cards have a limit of 4 textures with the default ffp
       * pipeline, and almost all games are happy with that. We can however support up to 8
       * texture stages because we have a 2nd pass limit of 8 instructions, and per stage we use
       * only 1 instruction.
       *
       * The proper fix for this is not to use GL_ATI_fragment_shader on cards newer than the
       * r200 series and use an ARB or GLSL shader instead
       */
      caps->MaxTextureBlendStages   = WINED3D_MAX_TEXTURES;
      caps->MaxSimultaneousTextures = 6;
  }
  
  static DWORD atifs_get_emul_mask(const struct wined3d_gl_info *gl_info)
  {
      return GL_EXT_EMUL_ARB_MULTITEXTURE | GL_EXT_EMUL_EXT_FOG_COORD;
  }
  
  static void *atifs_alloc(const struct wined3d_shader_backend_ops *shader_backend, void *shader_priv)
  {
      struct atifs_private_data *priv;
  
      if (!(priv = heap_alloc_zero(sizeof(*priv))))
          return NULL;
  
      wine_rb_init(&priv->fragment_shaders, wined3d_ffp_frag_program_key_compare);
      return priv;
  }
  
  /* Context activation is done by the caller. */
  static void atifs_free_ffpshader(struct wine_rb_entry *entry, void *param)
  {
      struct atifs_ffp_desc *entry_ati = WINE_RB_ENTRY_VALUE(entry, struct atifs_ffp_desc, parent.entry);
      struct wined3d_context_gl *context_gl = param;
      const struct wined3d_gl_info *gl_info;
  
      gl_info = context_gl->gl_info;
      GL_EXTCALL(glDeleteFragmentShaderATI(entry_ati->shader));
      checkGLcall("glDeleteFragmentShaderATI(entry->shader)");
      heap_free(entry_ati);
  }
  
  /* Context activation is done by the caller. */
  static void atifs_free(struct wined3d_device *device, struct wined3d_context *context)
  {
      struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
      struct atifs_private_data *priv = device->fragment_priv;
  
      wine_rb_destroy(&priv->fragment_shaders, atifs_free_ffpshader, context_gl);
  
      heap_free(priv);
      device->fragment_priv = NULL;
  }
  
  static BOOL atifs_color_fixup_supported(struct color_fixup_desc fixup)
  {
      /* We only support sign fixup of the first two channels. */
      return is_identity_fixup(fixup) || is_same_fixup(fixup, color_fixup_rg)
              || is_same_fixup(fixup, color_fixup_rgl) || is_same_fixup(fixup, color_fixup_rgba);
  }
  
  static BOOL atifs_alloc_context_data(struct wined3d_context *context)
  {
      struct atifs_context_private_data *priv;
  
      if (!(priv = heap_alloc_zero(sizeof(*priv))))
          return FALSE;
      context->fragment_pipe_data = priv;
      return TRUE;
  }
  
  static void atifs_free_context_data(struct wined3d_context *context)
  {
      heap_free(context->fragment_pipe_data);
  }
  
  const struct wined3d_fragment_pipe_ops atifs_fragment_pipeline =
  {
      atifs_enable,
      atifs_get_caps,
      atifs_get_emul_mask,
      atifs_alloc,
      atifs_free,
      atifs_alloc_context_data,
      atifs_free_context_data,
      atifs_color_fixup_supported,
      atifs_fragmentstate_template,
  };
  