Mark current bits as 2009Q1-RC2 for Intel driver.

This also cuts instructions by just using the existing bit in the payload
rather than computing it from the determinant in the SF unit and passing it
as a varying down to the WM.  Something still goes wrong with getting the
backface color right, but a simpler shader appears to get the right result.
(cherry picked from commit 699db6d842)

docs/relnotes-7.4.html

@@ -53,6 +53,7 @@ tbd
 <h2>Changes</h2>
 <ul>
 <li>Updated GL/glxext.h to version 48
+<li>Assorted updates for building on Solaris
 </ul>
 
 

src/mesa/drivers/dri/i965/brw_sf_emit.c

@@ -59,37 +59,6 @@ static GLboolean have_attr(struct brw_sf_compile *c,
    return (c->key.attrs & (1<<attr)) ? 1 : 0;
 }
 
-/**
- * Sets VERT_RESULT_FOGC.Y  for gl_FrontFacing
- *
- * This is currently executed if the fragment program uses VERT_RESULT_FOGC
- * at all, but this could be eliminated with a scan of the FP contents.
- */
-static void
-do_front_facing( struct brw_sf_compile *c )
-{
-   struct brw_compile *p = &c->func; 
-   int i;
-
-   if (!have_attr(c, VERT_RESULT_FOGC))
-      return;
-
-   brw_push_insn_state(p);
-   brw_CMP(p, brw_null_reg(), 
-        c->key.frontface_ccw ? BRW_CONDITIONAL_G : BRW_CONDITIONAL_L,
-        c->det, brw_imm_f(0));
-   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-   for (i = 0; i < 3; i++) {
-       struct brw_reg fogc = get_vert_attr(c, c->vert[i],FRAG_ATTRIB_FOGC);
-       brw_MOV(p, get_element(fogc, 1), brw_imm_f(0));
-       brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
-       brw_MOV(p, get_element(fogc, 1), brw_imm_f(1));
-       brw_set_predicate_control(p, BRW_PREDICATE_NONE);
-   }
-   brw_pop_insn_state(p);
-}
-
-			 
 /*********************************************************************** 
  * Twoside lighting
  */
@@ -384,7 +353,6 @@ void brw_emit_tri_setup( struct brw_sf_compile *c, GLboolean allocate)
 
    invert_det(c);
    copy_z_inv_w(c);
-   do_front_facing(c);
 
    if (c->key.do_twoside_color) 
       do_twoside_color(c);

src/mesa/drivers/dri/i965/brw_wm.c

@@ -40,6 +40,8 @@
 GLuint brw_wm_nr_args( GLuint opcode )
 {
    switch (opcode) {
+   case WM_FRONTFACING:
+      return 0;
    case WM_PIXELXY:
    case WM_CINTERP:
    case WM_WPOSXY:

src/mesa/drivers/dri/i965/brw_wm.h

@@ -172,7 +172,8 @@ struct brw_wm_instruction {
 #define WM_CINTERP        (MAX_OPCODE + 5)
 #define WM_WPOSXY         (MAX_OPCODE + 6)
 #define WM_FB_WRITE       (MAX_OPCODE + 7)
-#define MAX_WM_OPCODE     (MAX_OPCODE + 8)
+#define WM_FRONTFACING    (MAX_OPCODE + 8)
+#define MAX_WM_OPCODE     (MAX_OPCODE + 9)
 
 #define PROGRAM_PAYLOAD   (PROGRAM_FILE_MAX)
 #define PAYLOAD_DEPTH     (FRAG_ATTRIB_MAX)

src/mesa/drivers/dri/i965/brw_wm_debug.c

@@ -130,6 +130,9 @@ void brw_wm_print_insn( struct brw_wm_compile *c,
    case WM_FB_WRITE:
       _mesa_printf(" = FB_WRITE");
       break;
+   case WM_FRONTFACING:
+      _mesa_printf(" = FRONTFACING");
+      break;
    default:
       _mesa_printf(" = %s", _mesa_opcode_string(inst->opcode));
       break;

src/mesa/drivers/dri/i965/brw_wm_emit.c

@@ -254,6 +254,34 @@ static void emit_cinterp( struct brw_compile *p,
    }
 }
 
+/* Sets the destination channels to 1.0 or 0.0 according to glFrontFacing. */
+static void emit_frontfacing( struct brw_compile *p,
+			      const struct brw_reg *dst,
+			      GLuint mask )
+{
+   struct brw_reg r1_6ud = retype(brw_vec1_grf(1, 6), BRW_REGISTER_TYPE_UD);
+   GLuint i;
+
+   if (!(mask & WRITEMASK_XYZW))
+      return;
+
+   for (i = 0; i < 4; i++) {
+      if (mask & (1<<i)) {
+	 brw_MOV(p, dst[i], brw_imm_f(0.0));
+      }
+   }
+
+   /* bit 31 is "primitive is back face", so checking < (1 << 31) gives
+    * us front face
+    */
+   brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, r1_6ud, brw_imm_ud(1 << 31));
+   for (i = 0; i < 4; i++) {
+      if (mask & (1<<i)) {
+	 brw_MOV(p, dst[i], brw_imm_f(1.0));
+      }
+   }
+   brw_set_predicate_control_flag_value(p, 0xff);
+}
 
 static void emit_alu1( struct brw_compile *p, 
 		       struct brw_instruction *(*func)(struct brw_compile *, 
@@ -1158,6 +1186,10 @@ void brw_wm_emit( struct brw_wm_compile *c )
 	 emit_fb_write(c, args[0], args[1], args[2], inst->target, inst->eot);
 	 break;
 
+      case WM_FRONTFACING:
+	 emit_frontfacing(p, dst, dst_flags);
+	 break;
+
 	 /* Straightforward arithmetic:
 	  */
       case OPCODE_ADD:

src/mesa/drivers/dri/i965/brw_wm_fp.c

@@ -58,7 +58,8 @@ static const char *wm_opcode_strings[] = {
    "PINTERP",
    "CINTERP",
    "WPOSXY",
-   "FB_WRITE"
+   "FB_WRITE",
+   "FRONTFACING",
 };
 
 #if 0
@@ -180,7 +181,7 @@ static struct prog_instruction *emit_insn(struct brw_wm_compile *c,
    return inst;
 }
 
-static struct prog_instruction * emit_op(struct brw_wm_compile *c,
+static struct prog_instruction * emit_tex_op(struct brw_wm_compile *c,
 				       GLuint op,
 				       struct prog_dst_register dest,
 				       GLuint saturate,
@@ -206,6 +207,20 @@ static struct prog_instruction * emit_op(struct brw_wm_compile *c,
 }
    
 
+static struct prog_instruction * emit_op(struct brw_wm_compile *c,
+				       GLuint op,
+				       struct prog_dst_register dest,
+				       GLuint saturate,
+				       struct prog_src_register src0,
+				       struct prog_src_register src1,
+				       struct prog_src_register src2 )
+{
+   return emit_tex_op(c, op, dest, saturate,
+                      0, 0,  /* tex unit, target */
+                      src0, src1, src2);
+}
+   
+
 
 
 /***********************************************************************
@@ -227,7 +242,7 @@ static struct prog_src_register get_pixel_xy( struct brw_wm_compile *c )
       emit_op(c,
 	      WM_PIXELXY,
 	      dst_mask(pixel_xy, WRITEMASK_XY),
-	      0, 0, 0,
+	      0,
 	      payload_r0_depth,
 	      src_undef(),
 	      src_undef());
@@ -250,7 +265,7 @@ static struct prog_src_register get_delta_xy( struct brw_wm_compile *c )
       emit_op(c,
 	      WM_DELTAXY,
 	      dst_mask(delta_xy, WRITEMASK_XY),
-	      0, 0, 0,
+	      0,
 	      pixel_xy, 
 	      payload_r0_depth,
 	      src_undef());
@@ -274,7 +289,7 @@ static struct prog_src_register get_pixel_w( struct brw_wm_compile *c )
       emit_op(c,
 	      WM_PIXELW,
 	      dst_mask(pixel_w, WRITEMASK_W),
-	      0, 0, 0,
+	      0,
 	      interp_wpos,
 	      deltas, 
 	      src_undef());
@@ -292,24 +307,19 @@ static void emit_interp( struct brw_wm_compile *c,
    struct prog_dst_register dst = dst_reg(PROGRAM_INPUT, idx);
    struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
    struct prog_src_register deltas = get_delta_xy(c);
-   struct prog_src_register arg2;
-   GLuint opcode;
-   
+
    /* Need to use PINTERP on attributes which have been
     * multiplied by 1/W in the SF program, and LINTERP on those
     * which have not:
     */
    switch (idx) {
    case FRAG_ATTRIB_WPOS:
-      opcode = WM_LINTERP;
-      arg2 = src_undef();
-
       /* Have to treat wpos.xy specially:
        */
       emit_op(c,
 	      WM_WPOSXY,
 	      dst_mask(dst, WRITEMASK_XY),
-	      0, 0, 0,
+	      0,
 	      get_pixel_xy(c),
 	      src_undef(),
 	      src_undef());
@@ -321,10 +331,10 @@ static void emit_interp( struct brw_wm_compile *c,
       emit_op(c,
 	      WM_LINTERP,
 	      dst,
-	      0, 0, 0,
+	      0,
 	      interp,
 	      deltas,
-	      arg2);
+	      src_undef());
       break;
    case FRAG_ATTRIB_COL0:
    case FRAG_ATTRIB_COL1:
@@ -332,7 +342,7 @@ static void emit_interp( struct brw_wm_compile *c,
 	 emit_op(c,
 		 WM_CINTERP,
 		 dst,
-		 0, 0, 0,
+		 0,
 		 interp,
 		 src_undef(),
 		 src_undef());
@@ -341,17 +351,67 @@ static void emit_interp( struct brw_wm_compile *c,
 	 emit_op(c,
 		 WM_LINTERP,
 		 dst,
-		 0, 0, 0,
+		 0,
 		 interp,
 		 deltas,
 		 src_undef());
       }
       break;
+   case FRAG_ATTRIB_FOGC:
+      /* The FOGC input is really special.  When a program uses glFogFragCoord,
+       * the results returned are supposed to be (f,0,0,1).  But for Mesa GLSL,
+       * the glFrontFacing and glPointCoord values are also stashed in FOGC.
+       * So, write the interpolated fog value to X, then either 0, 1, or the
+       * stashed values to Y, Z, W.  Note that this means that
+       * glFogFragCoord.yzw can be wrong in those cases!
+       */
+
+      /* Interpolate the fog coordinate */
+      emit_op(c,
+	      WM_PINTERP,
+	      dst_mask(dst, WRITEMASK_X),
+	      0,
+	      interp,
+	      deltas,
+	      get_pixel_w(c));
+
+      /* Move the front facing value into FOGC.y if it's needed. */
+      if (c->fp->program.UsesFrontFacing) {
+	 emit_op(c,
+		 WM_FRONTFACING,
+		 dst_mask(dst, WRITEMASK_Y),
+		 0,
+		 src_undef(),
+		 src_undef(),
+		 src_undef());
+      } else {
+	 emit_op(c,
+		 OPCODE_MOV,
+		 dst_mask(dst, WRITEMASK_Y),
+		 0,
+		 src_swizzle1(interp, SWIZZLE_ZERO),
+		 src_undef(),
+		 src_undef());
+      }
+
+      /* Should do the PointCoord thing here. */
+      emit_op(c,
+	      OPCODE_MOV,
+	      dst_mask(dst, WRITEMASK_ZW),
+	      0,
+	      src_swizzle(interp,
+			  SWIZZLE_ZERO,
+			  SWIZZLE_ZERO,
+			  SWIZZLE_ZERO,
+			  SWIZZLE_ONE),
+	      src_undef(),
+	      src_undef());
+      break;
    default:
       emit_op(c,
 	      WM_PINTERP,
 	      dst,
-	      0, 0, 0,
+	      0,
 	      interp,
 	      deltas,
 	      get_pixel_w(c));
@@ -371,7 +431,7 @@ static void emit_ddx( struct brw_wm_compile *c,
     emit_op(c,
             OPCODE_DDX,
             inst->DstReg,
-            0, 0, 0,
+            0,
             interp,
             get_pixel_w(c),
             src_undef());
@@ -387,7 +447,7 @@ static void emit_ddy( struct brw_wm_compile *c,
     emit_op(c,
             OPCODE_DDY,
             inst->DstReg,
-            0, 0, 0,
+            0,
             interp,
             get_pixel_w(c),
             src_undef());
@@ -482,7 +542,7 @@ static void precalc_dst( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MUL,
 	      dst_mask(dst, WRITEMASK_Y),
-	      inst->SaturateMode, 0, 0,
+	      inst->SaturateMode,
 	      src0,
 	      src1,
 	      src_undef());
@@ -498,7 +558,7 @@ static void precalc_dst( struct brw_wm_compile *c,
       swz = emit_op(c,
 		    OPCODE_SWZ,
 		    dst_mask(dst, WRITEMASK_XZ),
-		    inst->SaturateMode, 0, 0,
+		    inst->SaturateMode,
 		    src_swizzle(src0, SWIZZLE_ONE, z, z, z),
 		    src_undef(),
 		    src_undef());
@@ -511,7 +571,7 @@ static void precalc_dst( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MOV,
 	      dst_mask(dst, WRITEMASK_W),
-	      inst->SaturateMode, 0, 0,
+	      inst->SaturateMode,
 	      src1,
 	      src_undef(),
 	      src_undef());
@@ -533,7 +593,7 @@ static void precalc_lit( struct brw_wm_compile *c,
       swz = emit_op(c,
 		    OPCODE_SWZ,
 		    dst_mask(dst, WRITEMASK_XW),
-		    0, 0, 0,
+		    0,
 		    src_swizzle1(src0, SWIZZLE_ONE),
 		    src_undef(),
 		    src_undef());
@@ -546,19 +606,26 @@ static void precalc_lit( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_LIT,
 	      dst_mask(dst, WRITEMASK_YZ),
-	      inst->SaturateMode, 0, 0,
+	      inst->SaturateMode,
 	      src0,
 	      src_undef(),
 	      src_undef());
    }
 }
 
+
+/**
+ * Some TEX instructions require extra code, cube map coordinate
+ * normalization, or coordinate scaling for RECT textures, etc.
+ * This function emits those extra instructions and the TEX
+ * instruction itself.
+ */
 static void precalc_tex( struct brw_wm_compile *c,
 			 const struct prog_instruction *inst )
 {
    struct prog_src_register coord;
    struct prog_dst_register tmpcoord;
-   GLuint unit = c->fp->program.Base.SamplerUnits[inst->TexSrcUnit];
+   const GLuint unit = c->fp->program.Base.SamplerUnits[inst->TexSrcUnit];
 
    if (inst->TexSrcTarget == TEXTURE_CUBE_INDEX) {
        struct prog_instruction *out;
@@ -568,49 +635,56 @@ static void precalc_tex( struct brw_wm_compile *c,
        struct prog_src_register tmp1src = src_reg_from_dst(tmp1);
        struct prog_src_register src0 = inst->SrcReg[0];
 
+       /* find longest component of coord vector and normalize it */
        tmpcoord = get_temp(c);
        coord = src_reg_from_dst(tmpcoord);
 
+       /* tmpcoord = src0 (i.e.: coord = src0) */
        out = emit_op(c, OPCODE_MOV,
                      tmpcoord,
-                     0, 0, 0,
+                     0,
                      src0,
                      src_undef(),
                      src_undef());
        out->SrcReg[0].NegateBase = 0;
        out->SrcReg[0].Abs = 1;
 
+       /* tmp0 = MAX(coord.X, coord.Y) */
        emit_op(c, OPCODE_MAX,
                tmp0,
-               0, 0, 0,
+               0,
                src_swizzle1(coord, X),
                src_swizzle1(coord, Y),
                src_undef());
 
+       /* tmp1 = MAX(tmp0, coord.Z) */
        emit_op(c, OPCODE_MAX,
                tmp1,
-               0, 0, 0,
+               0,
                tmp0src,
                src_swizzle1(coord, Z),
                src_undef());
 
+       /* tmp0 = 1 / tmp1 */
        emit_op(c, OPCODE_RCP,
                tmp0,
-               0, 0, 0,
+               0,
                tmp1src,
                src_undef(),
                src_undef());
 
+       /* tmpCoord = src0 * tmp0 */
        emit_op(c, OPCODE_MUL,
                tmpcoord,
-               0, 0, 0,
+               0,
                src0,
                tmp0src,
                src_undef());
 
        release_temp(c, tmp0);
        release_temp(c, tmp1);
-   } else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
+   }
+   else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
       struct prog_src_register scale = 
 	 search_or_add_param5( c, 
 			       STATE_INTERNAL, 
@@ -625,7 +699,7 @@ static void precalc_tex( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MUL,
 	      tmpcoord,
-	      0, 0, 0,
+	      0,
 	      inst->SrcReg[0],
 	      scale,
 	      src_undef());
@@ -641,19 +715,9 @@ static void precalc_tex( struct brw_wm_compile *c,
     * conversion requires allocating a temporary variable which we
     * don't have the facility to do that late in the compilation.
     */
-   if (!(c->key.yuvtex_mask & (1<<unit))) {
-      emit_op(c, 
-	      OPCODE_TEX,
-	      inst->DstReg,
-	      inst->SaturateMode,
-	      unit,
-	      inst->TexSrcTarget,
-	      coord,
-	      src_undef(),
-	      src_undef());
-   }
-   else {
-       GLboolean  swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
+   if (c->key.yuvtex_mask & (1 << unit)) {
+      /* convert ycbcr to RGBA */
+      GLboolean  swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
 
       /* 
 	 CONST C0 = { -.5, -.0625,  -.5, 1.164 }
@@ -675,22 +739,22 @@ static void precalc_tex( struct brw_wm_compile *c,
      
       /* tmp     = TEX ...
        */
-      emit_op(c, 
-	      OPCODE_TEX,
-	      tmp,
-	      inst->SaturateMode,
-	      unit,
-	      inst->TexSrcTarget,
-	      coord,
-	      src_undef(),
-	      src_undef());
+      emit_tex_op(c, 
+                  OPCODE_TEX,
+                  tmp,
+                  inst->SaturateMode,
+                  unit,
+                  inst->TexSrcTarget,
+                  coord,
+                  src_undef(),
+                  src_undef());
 
       /* tmp.xyz =  ADD TMP, C0
        */
       emit_op(c,
 	      OPCODE_ADD,
 	      dst_mask(tmp, WRITEMASK_XYZ),
-	      0, 0, 0,
+	      0,
 	      tmpsrc,
 	      C0,
 	      src_undef());
@@ -701,7 +765,7 @@ static void precalc_tex( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MUL,
 	      dst_mask(tmp, WRITEMASK_Y),
-	      0, 0, 0,
+	      0,
 	      tmpsrc,
 	      src_swizzle1(C0, W),
 	      src_undef());
@@ -716,7 +780,7 @@ static void precalc_tex( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MAD,
 	      dst_mask(dst, WRITEMASK_XYZ),
-	      0, 0, 0,
+	      0,
 	      swap_uv?src_swizzle(tmpsrc, Z,Z,X,X):src_swizzle(tmpsrc, X,X,Z,Z),
 	      C1,
 	      src_swizzle1(tmpsrc, Y));
@@ -726,13 +790,25 @@ static void precalc_tex( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MAD,
 	      dst_mask(dst, WRITEMASK_Y),
-	      0, 0, 0,
+	      0,
 	      src_swizzle1(tmpsrc, Z),
 	      src_swizzle1(C1, W),
 	      src_swizzle1(src_reg_from_dst(dst), Y));
 
       release_temp(c, tmp);
    }
+   else {
+      /* ordinary RGBA tex instruction */
+      emit_tex_op(c, 
+                  OPCODE_TEX,
+                  inst->DstReg,
+                  inst->SaturateMode,
+                  unit,
+                  inst->TexSrcTarget,
+                  coord,
+                  src_undef(),
+                  src_undef());
+   }
 
    if ((inst->TexSrcTarget == TEXTURE_RECT_INDEX) ||
        (inst->TexSrcTarget == TEXTURE_CUBE_INDEX))
@@ -777,7 +853,7 @@ static void precalc_txp( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_RCP,
 	      dst_mask(tmp, WRITEMASK_W),
-	      0, 0, 0,
+	      0,
 	      src_swizzle1(src0, GET_SWZ(src0.Swizzle, W)),
 	      src_undef(),
 	      src_undef());
@@ -787,7 +863,7 @@ static void precalc_txp( struct brw_wm_compile *c,
       emit_op(c,
 	      OPCODE_MUL,
 	      dst_mask(tmp, WRITEMASK_XYZ),
-	      0, 0, 0,
+	      0,
 	      src0,
 	      src_swizzle1(src_reg_from_dst(tmp), W),
 	      src_undef());
@@ -827,13 +903,13 @@ static void emit_fb_write( struct brw_wm_compile *c )
        for (i = 0 ; i < brw->state.nr_draw_regions; i++) {
 	   outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DATA0 + i);
 	   last_inst = inst = emit_op(c,
-		   WM_FB_WRITE, dst_mask(dst_undef(),0), 0, 0, 0,
+		   WM_FB_WRITE, dst_mask(dst_undef(),0), 0,
 		   outcolor, payload_r0_depth, outdepth);
 	   inst->Sampler = (i<<1);
 	   if (c->fp_fragcolor_emitted) {
 	       outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
 	       last_inst = inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
-		       0, 0, 0, outcolor, payload_r0_depth, outdepth);
+		       0, outcolor, payload_r0_depth, outdepth);
 	       inst->Sampler = (i<<1);
 	   }
        }
@@ -847,7 +923,7 @@ static void emit_fb_write( struct brw_wm_compile *c )
          outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
 
        inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
-	       0, 0, 0, outcolor, payload_r0_depth, outdepth);
+	       0, outcolor, payload_r0_depth, outdepth);
        inst->Sampler = 1|(0<<1);
    }
 }

src/mesa/drivers/dri/i965/brw_wm_glsl.c

@@ -564,6 +564,36 @@ static void emit_pinterp(struct brw_wm_compile *c,
     }
 }
 
+/* Sets the destination channels to 1.0 or 0.0 according to glFrontFacing. */
+static void emit_frontfacing(struct brw_wm_compile *c,
+			     struct prog_instruction *inst)
+{
+    struct brw_compile *p = &c->func;
+    struct brw_reg r1_6ud = retype(brw_vec1_grf(1, 6), BRW_REGISTER_TYPE_UD);
+    struct brw_reg dst;
+    GLuint mask = inst->DstReg.WriteMask;
+    int i;
+
+    for (i = 0; i < 4; i++) {
+	if (mask & (1<<i)) {
+	    dst = get_dst_reg(c, inst, i, 1);
+	    brw_MOV(p, dst, brw_imm_f(0.0));
+	}
+    }
+
+    /* bit 31 is "primitive is back face", so checking < (1 << 31) gives
+     * us front face
+     */
+    brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, r1_6ud, brw_imm_ud(1 << 31));
+    for (i = 0; i < 4; i++) {
+	if (mask & (1<<i)) {
+	    dst = get_dst_reg(c, inst, i, 1);
+	    brw_MOV(p, dst, brw_imm_f(1.0));
+	}
+    }
+    brw_set_predicate_control_flag_value(p, 0xff);
+}
+
 static void emit_xpd(struct brw_wm_compile *c,
 		struct prog_instruction *inst)
 {
@@ -2342,6 +2372,9 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
 	    case WM_FB_WRITE:
 		emit_fb_write(c, inst);
 		break;
+	    case WM_FRONTFACING:
+		emit_frontfacing(c, inst);
+		break;
 	    case OPCODE_ABS:
 		emit_abs(c, inst);
 		break;

src/mesa/drivers/dri/i965/brw_wm_pass1.c

@@ -260,6 +260,7 @@ void brw_wm_pass1( struct brw_wm_compile *c )
 
       case OPCODE_DST:
       case OPCODE_TXP:
+      case WM_FRONTFACING:
       default:
 	 break;
       }

src/mesa/drivers/dri/intel/intel_context.c

@@ -97,7 +97,7 @@ int INTEL_DEBUG = (0);
 
 #include "extension_helper.h"
 
-#define DRIVER_DATE                     "20090316 2009Q1 RC1"
+#define DRIVER_DATE                     "20090326 2009Q1 RC2"
 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
 
 static const GLubyte *