From 066ccec49485f0b6d314ef555e4b2a68f68c3804 Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Tue, 2 Oct 2007 17:07:30 -0600
Subject: [PATCH] Separate TGSI_OPCODE_KIL and TGSI_OPCODE_KILP (predicated).

These correspond to the NV and ARB-style fragment program KIL instructions.
The former is really supposed to examine the NV condition codes but Mesa's
GLSL compiler always emits unconditional KIL instructions.
---
 src/mesa/pipe/tgsi/exec/tgsi_dump.c    |  6 ++++--
 src/mesa/pipe/tgsi/exec/tgsi_exec.c    | 18 +++++++++++++++++-
 src/mesa/pipe/tgsi/exec/tgsi_token.h   |  7 ++++---
 src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c |  6 ++++++
 4 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/src/mesa/pipe/tgsi/exec/tgsi_dump.c b/src/mesa/pipe/tgsi/exec/tgsi_dump.c
index 0b273cd6e56..c179659aee8 100755
--- a/src/mesa/pipe/tgsi/exec/tgsi_dump.c
+++ b/src/mesa/pipe/tgsi/exec/tgsi_dump.c
@@ -270,7 +270,7 @@ static const char *TGSI_OPCODES[] =
    "OPCODE_COS",
    "OPCODE_DDX",
    "OPCODE_DDY",
-   "OPCODE_KIL",
+   "OPCODE_KILP",
    "OPCODE_PK2H",
    "OPCODE_PK2US",
    "OPCODE_PK4B",
@@ -364,6 +364,7 @@ static const char *TGSI_OPCODES[] =
    "OPCODE_IFC",
    "OPCODE_BREAKC",
    "OPCODE_TXP",
+   "OPCODE_KIL",
    "OPCODE_END"
 };
 
@@ -408,7 +409,7 @@ static const char *TGSI_OPCODES_SHORT[] =
    "COS",
    "DDX",
    "DDY",
-   "KIL",
+   "KILP",
    "PK2H",
    "PK2US",
    "PK4B",
@@ -502,6 +503,7 @@ static const char *TGSI_OPCODES_SHORT[] =
    "IFC",
    "BREAKC",
    "TXP",
+   "KIL",
    "END"
 };
 
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.c b/src/mesa/pipe/tgsi/exec/tgsi_exec.c
index edd46100c5e..b88620d71df 100644
--- a/src/mesa/pipe/tgsi/exec/tgsi_exec.c
+++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.c
@@ -1129,8 +1129,12 @@ store_dest(
     store_dest (mach, VAL, &inst->FullDstRegisters[INDEX], inst, CHAN )
 
 
+/**
+ * Execute ARB-style KIL which is predicated by a src register.
+ * Kill fragment if any of the four values is less than zero.
+ */
 static void
-exec_kil (struct tgsi_exec_machine *mach,
+exec_kilp(struct tgsi_exec_machine *mach,
           const struct tgsi_full_instruction *inst)
 {
     GLuint uniquemask;
@@ -1168,6 +1172,14 @@ exec_kil (struct tgsi_exec_machine *mach,
 }
 
 
+static void
+exec_kil(struct tgsi_exec_machine *mach,
+         const struct tgsi_full_instruction *inst)
+{
+   /* for enabled ExecMask bits, set the killed bit */
+   mach->Temps[TEMP_KILMASK_I].xyzw[TEMP_KILMASK_C].u[0] |= mach->ExecMask;
+}
+
 
 
 /*
@@ -1782,6 +1794,10 @@ exec_instruction(
       }
       break;
 
+   case TGSI_OPCODE_KILP:
+       exec_kilp (mach, inst);
+       break;
+
    case TGSI_OPCODE_KIL:
        exec_kil (mach, inst);
        break;
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_token.h b/src/mesa/pipe/tgsi/exec/tgsi_token.h
index d2fa8138159..8d5992facbf 100644
--- a/src/mesa/pipe/tgsi/exec/tgsi_token.h
+++ b/src/mesa/pipe/tgsi/exec/tgsi_token.h
@@ -236,7 +236,7 @@ struct tgsi_immediate_float32
 #define TGSI_OPCODE_EX2                 TGSI_OPCODE_EXPBASE2
 #define TGSI_OPCODE_FLR                 TGSI_OPCODE_FLOOR
 #define TGSI_OPCODE_FRC                 TGSI_OPCODE_FRAC
-#define TGSI_OPCODE_KIL                 39
+#define TGSI_OPCODE_KILP                39  /* predicated kill */
 #define TGSI_OPCODE_LG2                 TGSI_OPCODE_LOGBASE2
 /* TGSI_OPCODE_LIT */
 #define TGSI_OPCODE_LRP                 TGSI_OPCODE_LERP
@@ -1100,9 +1100,10 @@ struct tgsi_immediate_float32
 /* TGSI_OPCODE_MOVA */
 /* TGSI_OPCODE_LOGP */
 
-#define TGSI_OPCODE_END                 133   /* aka HALT */
+#define TGSI_OPCODE_KIL                 133  /* unpredicated kill */
+#define TGSI_OPCODE_END                 134  /* aka HALT */
 
-#define TGSI_OPCODE_LAST                134
+#define TGSI_OPCODE_LAST                135
 
 #define TGSI_SAT_NONE            0  /* do not saturate */
 #define TGSI_SAT_ZERO_ONE        1  /* clamp to [0,1] */
diff --git a/src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c b/src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c
index 431b82a98f4..2a2a1a04306 100644
--- a/src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c
+++ b/src/mesa/pipe/tgsi/mesa/mesa_to_tgsi.c
@@ -336,6 +336,12 @@ compile_instruction(
       fullinst->Instruction.Opcode = TGSI_OPCODE_INT;
       break;
    case OPCODE_KIL:
+      /* predicated w/ a register */
+      fullinst->Instruction.Opcode = TGSI_OPCODE_KILP;
+      break;
+   case OPCODE_KIL_NV:
+      /* unpredicated */
+      assert(inst->DstReg.CondMask == COND_TR);
       fullinst->Instruction.Opcode = TGSI_OPCODE_KIL;
       break;
    case OPCODE_LG2:
-- 
2.30.2