i965/fs: Add byte scattered read message and fs support

v2: Fix alignment style (Topi Pohjolainen)
    (Jason Ekstrand)
    - Enable bit_size parameter to scattered messages to enable different
      bitsizes byte/word/dword.
    - Remove use of brw_send_indirect_scattered_message in favor of
      brw_send_indirect_surface_message.
    - Move scattered messages to surface messages namespace.
    - Assert align1 for scattered messages and assume Gen8+.
    - Inline brw_set_dp_byte_scattered_read.

v3: (Jason Ekstrand)
    - Use renamed brw_byte_scattered_data_element_from_bit_size method
    - Assert scattered read for Gen8+ and Haswell.
    - Use conditional expresion at components_read.
    - Include comment about params for scattered opcodes.

Reviewed-by: Jason Ekstrand <[email protected]>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/intel/compiler/brw_fs_surface_builder.cpp b/src/intel/compiler/brw_fs_surface_builder.cpp
index 37cc29e361d..c346ef9e701 100644
--- a/src/intel/compiler/brw_fs_surface_builder.cpp
+++ b/src/intel/compiler/brw_fs_surface_builder.cpp
@@ -161,6 +161,16 @@ namespace brw {
                           addr, tmp, surface, dims, op, rsize);
       }
 
+      fs_reg
+      emit_byte_scattered_read(const fs_builder &bld,
+                               const fs_reg &surface, const fs_reg &addr,
+                               unsigned dims, unsigned size,
+                               unsigned bit_size, brw_predicate pred)
+      {
+         return emit_send(bld, SHADER_OPCODE_BYTE_SCATTERED_READ_LOGICAL,
+                          addr, fs_reg(), surface, dims, bit_size, size, pred);
+      }
+
       void
       emit_byte_scattered_write(const fs_builder &bld, const fs_reg &surface,
                                 const fs_reg &addr, const fs_reg &src,
@@ -1202,4 +1212,3 @@ namespace brw {
       }
    }
 }
-