Mesa (master): i965: Add shader opcode for sampling MCS surface

[Chris Forbes]

Module: Mesa
Branch: master
Commit: 7629c489c88a6f6dd47b311a90ad64e216c9a37c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7629c489c88a6f6dd47b311a90ad64e216c9a37c

Author: Chris Forbes <chrisf at ijw.co.nz>
Date:   Sat Nov 30 10:32:16 2013 +1300

i965: Add shader opcode for sampling MCS surface

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_defines.h          |    1 +
 src/mesa/drivers/dri/i965/brw_fs.cpp             |    1 +
 src/mesa/drivers/dri/i965/brw_fs_generator.cpp   |    5 +++++
 src/mesa/drivers/dri/i965/brw_shader.cpp         |    3 +++
 src/mesa/drivers/dri/i965/brw_vec4.cpp           |    1 +
 src/mesa/drivers/dri/i965/brw_vec4_generator.cpp |    5 +++++
 6 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h
index befb07c..2121013 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -770,6 +770,7 @@ enum opcode {
    SHADER_OPCODE_TXS,
    FS_OPCODE_TXB,
    SHADER_OPCODE_TXF_MS,
+   SHADER_OPCODE_TXF_MCS,
    SHADER_OPCODE_LOD,
    SHADER_OPCODE_TG4,
    SHADER_OPCODE_TG4_OFFSET,
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 00dbe31..dbd93e7 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -767,6 +767,7 @@ fs_visitor::implied_mrf_writes(fs_inst *inst)
    case SHADER_OPCODE_TXD:
    case SHADER_OPCODE_TXF:
    case SHADER_OPCODE_TXF_MS:
+   case SHADER_OPCODE_TXF_MCS:
    case SHADER_OPCODE_TG4:
    case SHADER_OPCODE_TG4_OFFSET:
    case SHADER_OPCODE_TXL:
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 8bb6184..0cc574c 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -431,6 +431,10 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
          else
             msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD;
          break;
+      case SHADER_OPCODE_TXF_MCS:
+         assert(brw->gen >= 7);
+         msg_type = GEN7_SAMPLER_MESSAGE_SAMPLE_LD_MCS;
+         break;
       case SHADER_OPCODE_LOD:
          msg_type = GEN5_SAMPLER_MESSAGE_LOD;
          break;
@@ -1651,6 +1655,7 @@ fs_generator::generate_code(exec_list *instructions)
       case SHADER_OPCODE_TXD:
       case SHADER_OPCODE_TXF:
       case SHADER_OPCODE_TXF_MS:
+      case SHADER_OPCODE_TXF_MCS:
       case SHADER_OPCODE_TXL:
       case SHADER_OPCODE_TXS:
       case SHADER_OPCODE_LOD:
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index ddb4524..88aa169 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -449,6 +449,8 @@ brw_instruction_name(enum opcode op)
       return "txb";
    case SHADER_OPCODE_TXF_MS:
       return "txf_ms";
+   case SHADER_OPCODE_TXF_MCS:
+      return "txf_mcs";
    case SHADER_OPCODE_TG4:
       return "tg4";
    case SHADER_OPCODE_TG4_OFFSET:
@@ -544,6 +546,7 @@ backend_instruction::is_tex()
            opcode == SHADER_OPCODE_TXD ||
            opcode == SHADER_OPCODE_TXF ||
            opcode == SHADER_OPCODE_TXF_MS ||
+           opcode == SHADER_OPCODE_TXF_MCS ||
            opcode == SHADER_OPCODE_TXL ||
            opcode == SHADER_OPCODE_TXS ||
            opcode == SHADER_OPCODE_LOD ||
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index 962b4cf..fb57707 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -273,6 +273,7 @@ vec4_visitor::implied_mrf_writes(vec4_instruction *inst)
    case SHADER_OPCODE_TXD:
    case SHADER_OPCODE_TXF:
    case SHADER_OPCODE_TXF_MS:
+   case SHADER_OPCODE_TXF_MCS:
    case SHADER_OPCODE_TXS:
    case SHADER_OPCODE_TG4:
    case SHADER_OPCODE_TG4_OFFSET:
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp b/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp
index 30c2ca2..c1ef81d 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp
@@ -305,6 +305,10 @@ vec4_generator::generate_tex(vec4_instruction *inst,
          else
             msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD;
          break;
+      case SHADER_OPCODE_TXF_MCS:
+         assert(brw->gen >= 7);
+         msg_type = GEN7_SAMPLER_MESSAGE_SAMPLE_LD_MCS;
+         break;
       case SHADER_OPCODE_TXS:
 	 msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
 	 break;
@@ -1138,6 +1142,7 @@ vec4_generator::generate_vec4_instruction(vec4_instruction *instruction,
    case SHADER_OPCODE_TXD:
    case SHADER_OPCODE_TXF:
    case SHADER_OPCODE_TXF_MS:
+   case SHADER_OPCODE_TXF_MCS:
    case SHADER_OPCODE_TXL:
    case SHADER_OPCODE_TXS:
    case SHADER_OPCODE_TG4: