llvmpipe: Update status in README and TODO/FIXME comments throughout the code.

src/gallium/drivers/llvmpipe/README

@@ -8,13 +8,16 @@ Done so far is:
 
  - the whole fragment pipeline is code generated in a single function
  
+   - input interpolation
+   
    - depth testing
  
+   - texture sampling (not all state/formats are supported) 
+   
    - fragment shader TGSI translation
      - same level of support as the TGSI SSE2 exec machine, with the exception
        we don't fallback to TGSI interpretation when an unsupported opcode is
        found, but just ignore it
-     - texture sampling via an intrinsic call
      - done in SoA layout
      - input interpolation also code generated
  
@@ -28,16 +31,17 @@ Done so far is:
      any width and length
    - not all operations are implemented for these types yet though
 
-Most mesa/progs/demos/* work. Speed is on par with Keith's softpipe-opt branch,
+Most mesa/progs/demos/* work. 
-which includes hand written fast implementations for common cases.
 
 To do (probably by this order):
 
  - code generate stipple and stencil testing
 
- - code generate texture sampling
+ - translate the remaining bits of texture sampling state
 
  - translate TGSI control flow instructions, and all other remaining opcodes
+ 
+ - integrate with the draw module for VS code generation
 
  - code generate the triangle setup and rasterization
 
@@ -93,7 +97,7 @@ Alternatively, you can build it with GNU make, if you prefer, by invoking it as
 
   make linux-llvm
 
-but the rest of these instructions assume scons is used.
+but the rest of these instructions assume that scons is used.
 
 
 Using
@@ -108,6 +112,9 @@ or
 
   export LD_LIBRARY_PATH=$PWD/build/linux-x86-debug/lib:$LD_LIBRARY_PATH
 
+For performance evaluation pass debug=no to scons, and use the corresponding
+lib directory without the "-debug" suffix.
+
 
 Unit testing
 ============
@@ -119,7 +126,7 @@ build/linux-???-debug/gallium/drivers/llvmpipe:
  - lp_test_conv: SIMD vector conversion
  - lp_test_format: pixel unpacking/packing
 
-Some of this tests can output results and benchmarks to a tab-seperated-file
+Some of this tests can output results and benchmarks to a tab-separated-file
 for posterior analysis, e.g.:
 
   build/linux-x86_64-debug/gallium/drivers/llvmpipe/lp_test_blend -o blend.tsv
@@ -133,10 +140,10 @@ Development Notes
   at the top of the lp_bld_*.c functions.  
 
 - All lp_bld_*.[ch] are isolated from the rest of the driver, and could/may be 
-  put in a standalone Gallium state -> LLVM IR translation module.
+  put in a stand-alone Gallium state -> LLVM IR translation module.
 
 - We use LLVM-C bindings for now. They are not documented, but follow the C++
   interfaces very closely, and appear to be complete enough for code
   generation. See 
   http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html
-  for a standalone example.
+  for a stand-alone example.

src/gallium/drivers/llvmpipe/lp_bld_conv.c

@@ -122,7 +122,7 @@ lp_build_clamped_float_to_unsigned_norm(LLVMBuilderRef builder,
       int shift = dst_width - n;
       res = LLVMBuildShl(builder, res, lp_build_int_const_scalar(src_type, shift), "");
 
-      /* Fill in the empty lower bits for added precision? */
+      /* TODO: Fill in the empty lower bits for additional precision? */
 #if 0
       {
          LLVMValueRef msb;
@@ -244,7 +244,7 @@ lp_build_const_pack_shuffle(unsigned n)
  * Expand the bit width.
  *
  * This will only change the number of bits the values are represented, not the
- * values themselved.
+ * values themselves.
  */
 static void
 lp_build_expand(LLVMBuilderRef builder,

src/gallium/drivers/llvmpipe/lp_bld_depth.c

@@ -211,5 +211,6 @@ lp_build_depth_test(LLVMBuilderRef builder,
       LLVMBuildStore(builder, dst, dst_ptr);
    }
 
+   /* FIXME */
    assert(!state->occlusion_count);
 }

src/gallium/drivers/llvmpipe/lp_bld_logic.c

@@ -313,8 +313,6 @@ lp_build_select(struct lp_build_context *bld,
       b = LLVMBuildBitCast(bld->builder, b, int_vec_type, "");
    }
 
-   /* TODO: On SSE4 we could do this with a single instruction -- PBLENDVB */
-
    a = LLVMBuildAnd(bld->builder, a, mask, "");
 
    /* This often gets translated to PANDN, but sometimes the NOT is
@@ -376,9 +374,9 @@ lp_build_select_aos(struct lp_build_context *bld,
 
       return LLVMBuildShuffleVector(bld->builder, a, b, LLVMConstVector(shuffles, n), "");
    }
+   else {
 #if 0
-   else if(0) {
+      /* XXX: Unfortunately select of vectors do not work */
-      /* FIXME: Unfortunately select of vectors do not work */
       /* Use a select */
       LLVMTypeRef elem_type = LLVMInt1Type();
       LLVMValueRef cond[LP_MAX_VECTOR_LENGTH];
@@ -388,10 +386,9 @@ lp_build_select_aos(struct lp_build_context *bld,
             cond[j + i] = LLVMConstInt(elem_type, cond[i] ? 1 : 0, 0);
 
       return LLVMBuildSelect(bld->builder, LLVMConstVector(cond, n), a, b, "");
-   }
+#else
-#endif
-   else {
       LLVMValueRef mask = lp_build_const_mask_aos(type, cond);
       return lp_build_select(bld, mask, a, b);
+#endif
    }
 }

src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c

@@ -207,6 +207,7 @@ lp_build_sample_wrap(struct lp_build_sample_context *bld,
    case PIPE_TEX_WRAP_MIRROR_CLAMP:
    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+      /* FIXME */
    default:
       assert(0);
    }
@@ -398,7 +399,13 @@ lp_build_sample_soa(LLVMBuilderRef builder,
    case PIPE_TEX_FILTER_ANISO:
       lp_build_sample_2d_linear_soa(&bld, s, t, width, height, stride, data_ptr, texel);
       break;
+   default:
+      assert(0);
    }
 
+   /* FIXME: respect static_state->min_mip_filter */;
+   /* FIXME: respect static_state->mag_img_filter */;
+   /* FIXME: respect static_state->prefilter */;
+
    lp_build_sample_compare(&bld, p, texel);
 }

src/gallium/drivers/llvmpipe/lp_bld_tgsi_soa.c

@@ -167,6 +167,7 @@ emit_fetch(
       break;
 
    case TGSI_UTIL_SIGN_SET:
+      /* TODO: Use bitwese OR for floating point */
       res = lp_build_abs( &bld->base, res );
       res = LLVMBuildNeg( bld->base.builder, res, "" );
       break;
@@ -349,14 +350,6 @@ emit_kil(
 }
 
 
-static void
-emit_kilp(
-   struct lp_build_tgsi_soa_context *bld )
-{
-   /* XXX todo / fix me */
-}
-
-
 /**
  * Check if inst src/dest regs use indirect addressing into temporary
  * register file.
@@ -398,6 +391,7 @@ emit_instruction(
    switch (inst->Instruction.Opcode) {
 #if 0
    case TGSI_OPCODE_ARL:
+      /* FIXME */
       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
          tmp0 = emit_fetch( bld, inst, 0, chan_index );
          emit_flr(bld, 0, 0);
@@ -686,6 +680,7 @@ emit_instruction(
       break;
 
    case TGSI_OPCODE_CND:
+      /* FIXME */
       return 0;
       break;
 
@@ -849,13 +844,11 @@ emit_instruction(
       return 0;
       break;
 
-#if 0
    case TGSI_OPCODE_KILP:
       /* predicated kill */
-      emit_kilp( bld );
+      /* FIXME */
-      return 0; /* XXX fix me */
+      return 0;
       break;
-#endif
 
    case TGSI_OPCODE_KIL:
       /* conditional kill */
@@ -1309,7 +1302,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
 
       switch( parse.FullToken.Token.Type ) {
       case TGSI_TOKEN_TYPE_DECLARATION:
-         /* Input already interpolated */
+         /* Inputs already interpolated */
          break;
 
       case TGSI_TOKEN_TYPE_INSTRUCTION:

src/gallium/drivers/llvmpipe/lp_context.c

@@ -141,8 +141,6 @@ llvmpipe_is_texture_referenced( struct pipe_context *pipe,
          return PIPE_REFERENCED_FOR_WRITE;
    }
    
-   /* FIXME: we also need to do the same for the texture cache */
-   
    return PIPE_UNREFERENCED;
 }
 

src/gallium/drivers/llvmpipe/lp_jit.h

@@ -80,10 +80,9 @@ struct lp_jit_context
 
    struct tgsi_sampler **samplers;
 
-   /* TODO: alpha reference value */
    float alpha_ref_value;
 
-   /* TODO: blend constant color */
+   /* FIXME: store (also?) in floats */
    uint8_t *blend_color;
 
    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];

src/gallium/drivers/llvmpipe/lp_setup.c

@@ -163,8 +163,6 @@ shade_quads(struct llvmpipe_context *llvmpipe,
    else
       depth = NULL;
 
-   /* TODO: blend color */
-
    /* XXX: This will most likely fail on 32bit x86 without -mstackrealign */
    assert(lp_check_alignment(mask, 16));