On 01/09/2012 04:54 AM, Dave Airlie wrote:
From: Dave Airlie<airl...@redhat.com>

This adds integer version of SSG that GLSL 1.30 can produce.

Signed-off-by: Dave Airlie<airl...@redhat.com>
---
  src/gallium/auxiliary/tgsi/tgsi_exec.c     |   14 ++++++++++++++
  src/gallium/auxiliary/tgsi/tgsi_info.c     |    1 +
  src/gallium/include/pipe/p_shader_tokens.h |    3 ++-
  3 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c 
b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 61ab58a..3f62028 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -375,6 +375,16 @@ micro_sgn(union tgsi_exec_channel *dst,
  }

  static void
+micro_isgn(union tgsi_exec_channel *dst,
+          const union tgsi_exec_channel *src)
+{
+   dst->i[0] = src->i[0]<  0 ? -1 : src->i[0]>  0 ? 1 : 0;
+   dst->i[1] = src->i[1]<  0 ? -1 : src->i[1]>  0 ? 1 : 0;
+   dst->i[2] = src->i[2]<  0 ? -1 : src->i[2]>  0 ? 1 : 0;
+   dst->i[3] = src->i[3]<  0 ? -1 : src->i[3]>  0 ? 1 : 0;
+}
+
+static void
  micro_sgt(union tgsi_exec_channel *dst,
            const union tgsi_exec_channel *src0,
            const union tgsi_exec_channel *src1)
@@ -4203,6 +4213,10 @@ exec_instruction(
        exec_vector_unary(mach, inst, micro_iabs, TGSI_EXEC_DATA_INT, 
TGSI_EXEC_DATA_INT);
        break;

+   case TGSI_OPCODE_ISSG:
+      exec_vector_unary(mach, inst, micro_isgn, TGSI_EXEC_DATA_INT, 
TGSI_EXEC_DATA_INT);
+      break;
+
     default:
        assert( 0 );
     }
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c 
b/src/gallium/auxiliary/tgsi/tgsi_info.c
index c9acdb9..5b26d8f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -193,6 +193,7 @@ static const struct tgsi_opcode_info 
opcode_info[TGSI_OPCODE_LAST] =
     { 1, 1, 0, 0, 0, 0, "UARL", TGSI_OPCODE_UARL },
     { 1, 3, 0, 0, 0, 0, "UCMP", TGSI_OPCODE_UCMP },
     { 1, 1, 0, 0, 0, 0, "IABS", TGSI_OPCODE_IABS },
+   { 1, 1, 0, 0, 0, 0, "ISSG", TGSI_OPCODE_ISSG },
  };

  const struct tgsi_opcode_info *
diff --git a/src/gallium/include/pipe/p_shader_tokens.h 
b/src/gallium/include/pipe/p_shader_tokens.h
index 75e17a1..c8c1cf2 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -377,8 +377,9 @@ struct tgsi_property_data {
  #define TGSI_OPCODE_UARL                157
  #define TGSI_OPCODE_UCMP                158
  #define TGSI_OPCODE_IABS                159
+#define TGSI_OPCODE_ISSG                160

-#define TGSI_OPCODE_LAST                160
+#define TGSI_OPCODE_LAST                161

  #define TGSI_SAT_NONE            0  /* do not saturate */
  #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */

Reviewed-by: Brian Paul <bri...@vmware.com>
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