- Add InitInstruction to hw shader backend, and remove SetUnusedSource.

- NV30FP/NV40VP: Clear any fields before we OR new values into them
- NV40VP: It seems that it might be possible to write a result reg at the
    same time a temp is written. In InitInstruction, initialise OUT_DEST to
    OUT_DEST_TEMP so result regs don't get clobbered by default.

5 files changed, 109 insertions, 55 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.h b/src/mesa/drivers/dri/nouveau/nouveau_shader.h
index fac8851a57..a1e7794487 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_shader.h
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.h
@@ -256,6 +256,7 @@ struct _nvsFunc {
    struct _op_xlat*(*GetOPTXRec)	(nvsFunc *, int merged);
    struct _op_xlat*(*GetOPTXFromSOP)	(nvsOpcode, int *id);
 
+   void		(*InitInstruction)	(nvsFunc *);
    int		(*SupportsOpcode)	(nvsFunc *, nvsOpcode);
    void		(*SetOpcode)		(nvsFunc *, unsigned int opcode,
 	 				 int slot);
@@ -265,7 +266,6 @@ struct _nvsFunc {
    void		(*SetResult)		(nvsFunc *, nvsRegister *,
 	 				 unsigned int mask, int slot);
    void		(*SetSource)		(nvsFunc *, nvsRegister *, int pos);
-   void		(*SetUnusedSource)	(nvsFunc *, int pos);
    void		(*SetTexImageUnit)	(nvsFunc *, int unit);
    void		(*SetSaturate)		(nvsFunc *);
    void		(*SetLastInst)		(nvsFunc *);
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c b/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c
index 1cb0ca490e..b39f4668b9 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c
@@ -34,6 +34,8 @@
 #include "macros.h"
 #include "enums.h"
 
+#include "program.h"
+
 #include "nouveau_shader.h"
 
 struct pass2_rec {
@@ -100,7 +102,7 @@ pass2_add_instruction(nvsPtr nvs, nvsInstruction *inst,
    nvsSwzComp default_swz[4] = { NVS_SWZ_X, NVS_SWZ_Y, NVS_SWZ_Z, NVS_SWZ_W };
    nvsFunc *shader = nvs->func;
    nvsRegister reg;
-   int i, srcpos_used = ~7;
+   int i;
 
    shader->SetOpcode(shader, op->NV, slot);
    if (inst->saturate	) shader->SetSaturate(shader);
@@ -129,7 +131,6 @@ pass2_add_instruction(nvsPtr nvs, nvsInstruction *inst,
 	 if (reg.file == NVS_FILE_ATTRIB)
 	    nvs->inputs_read |= (1 << reg.index);
 	 shader->SetSource(shader, &reg, op->srcpos[i]);
-	 srcpos_used |= (1<<op->srcpos[i]);
 	 if (reg.file == NVS_FILE_CONST && shader->GetSourceConstVal) {
 	    int idx_slot = nvs->params[reg.index].hw_index_cnt++;
 	    nvs->params[reg.index].hw_index = realloc(
@@ -138,10 +139,6 @@ pass2_add_instruction(nvsPtr nvs, nvsInstruction *inst,
 	 }
       }
    }
-   for (i = 0; i < 3; i++) {
-      if (!(srcpos_used & (1<<i)))
-	 shader->SetUnusedSource(shader, i);
-   }
 
    reg = pass2_mangle_reg(nvs, inst, inst->dest);
    if (reg.file == NVS_FILE_RESULT)
@@ -153,9 +150,9 @@ static int
 pass2_assemble_instruction(nvsPtr nvs, nvsInstruction *inst, int last)
 {
    nvsFunc *shader = nvs->func;
-   struct _op_xlat *op, *op2;
-   unsigned int hw_inst[8] = {0,0,0,0,0,0,0,0,0};
-   int slot, slot2;
+   struct _op_xlat *op;
+   unsigned int hw_inst[8];
+   int slot;
    int instsz;
    int i;
 
@@ -164,6 +161,7 @@ pass2_assemble_instruction(nvsPtr nvs, nvsInstruction *inst, int last)
    /* Assemble this instruction */
    if (!(op = shader->GetOPTXFromSOP(inst->op, &slot)))
       return 0;
+   shader->InitInstruction(shader);
    pass2_add_instruction(nvs, inst, op, slot);
    if (last)
       shader->SetLastInst(shader);
diff --git a/src/mesa/drivers/dri/nouveau/nv30_fragprog.c b/src/mesa/drivers/dri/nouveau/nv30_fragprog.c
index 46391eb911..1c2664ec70 100644
--- a/src/mesa/drivers/dri/nouveau/nv30_fragprog.c
+++ b/src/mesa/drivers/dri/nouveau/nv30_fragprog.c
@@ -61,7 +61,7 @@ static void
 NV30FPUpdateConst(GLcontext *ctx, nouveauShader *nvs, int id)
 {
    uint32_t *new     = nvs->params[id].source_val ?
-      nvs->params[id].source_val : nvs->params[id].val;
+      (uint32_t*)nvs->params[id].source_val : (uint32_t*)nvs->params[id].val;
    uint32_t *current;
    int i;
 
@@ -101,6 +101,7 @@ NV30FPSupportsOpcode(nvsFunc *shader, nvsOpcode op)
 static void
 NV30FPSetOpcode(nvsFunc *shader, unsigned int opcode, int slot)
 {
+   shader->inst[0] &= ~NV30_FP_OP_OPCODE_MASK;
    shader->inst[0] |= (opcode << NV30_FP_OP_OPCODE_SHIFT);
 }
 
@@ -139,7 +140,10 @@ NV30FPSetCondition(nvsFunc *shader, int on, nvsCond cond, int reg,
 	break;
    }
 
+   shader->inst[1] &= ~NV30_FP_OP_COND_MASK;
    shader->inst[1] |= (hwcond << NV30_FP_OP_COND_SHIFT);
+
+   shader->inst[1] &= ~NV30_FP_OP_COND_SWZ_ALL_MASK;
    shader->inst[1] |= (swz[NVS_SWZ_X] << NV30_FP_OP_COND_SWZ_X_SHIFT);
    shader->inst[1] |= (swz[NVS_SWZ_Y] << NV30_FP_OP_COND_SWZ_Y_SHIFT);
    shader->inst[1] |= (swz[NVS_SWZ_Z] << NV30_FP_OP_COND_SWZ_Z_SHIFT);
@@ -149,7 +153,7 @@ NV30FPSetCondition(nvsFunc *shader, int on, nvsCond cond, int reg,
 static void
 NV30FPSetResult(nvsFunc *shader, nvsRegister *reg, unsigned int mask, int slot)
 {
-   unsigned int hwreg, hwmask = 0;
+   unsigned int hwreg;
 
    if (mask & SMASK_X) shader->inst[0] |= NV30_FP_OP_OUT_X;
    if (mask & SMASK_Y) shader->inst[0] |= NV30_FP_OP_OUT_Y;
@@ -160,8 +164,11 @@ NV30FPSetResult(nvsFunc *shader, nvsRegister *reg, unsigned int mask, int slot)
       hwreg = 0; /* FIXME: this is only fragment.color */
       /* This is *not* correct, I have no idea what it is either */
       shader->inst[0] |= NV30_FP_OP_UNK0_7;
-   } else
+   } else {
+      shader->inst[0] &= ~NV30_FP_OP_UNK0_7;
       hwreg = reg->index;
+   }
+   shader->inst[0] &= ~NV30_FP_OP_OUT_REG_SHIFT;
    shader->inst[0] |= (hwreg  << NV30_FP_OP_OUT_REG_SHIFT);
 }
 
@@ -197,6 +204,7 @@ NV30FPSetSource(nvsFunc *shader, nvsRegister *reg, int pos)
 		hwin = NV30_FP_OP_INPUT_SRC_COL0;
 		break;
 	 }
+	 shader->inst[0] &= ~NV30_FP_OP_INPUT_SRC_MASK;
 	 shader->inst[0] |= (hwin << NV30_FP_OP_INPUT_SRC_SHIFT);
 	 hwsrc |= (hwin << NV30_FP_REG_SRC_SHIFT);
       }
@@ -220,24 +228,14 @@ NV30FPSetSource(nvsFunc *shader, nvsRegister *reg, int pos)
    hwsrc |= (reg->swizzle[NVS_SWZ_Z] << NV30_FP_REG_SWZ_Z_SHIFT);
    hwsrc |= (reg->swizzle[NVS_SWZ_W] << NV30_FP_REG_SWZ_W_SHIFT);
 
+   shader->inst[pos+1] &= ~NV30_FP_REG_ALL_MASK;
    shader->inst[pos+1] |= hwsrc;
 }
 
 static void
-NV30FPSetUnusedSource(nvsFunc *shader, int pos)
-{
-   shader->inst[pos+1] |= (
-	 (NV30_FP_REG_TYPE_INPUT << NV30_FP_REG_TYPE_SHIFT) |
-	 (NVS_SWZ_X << NV30_FP_REG_SWZ_X_SHIFT) |
-	 (NVS_SWZ_Y << NV30_FP_REG_SWZ_Y_SHIFT) |
-	 (NVS_SWZ_Z << NV30_FP_REG_SWZ_Z_SHIFT) |
-	 (NVS_SWZ_W << NV30_FP_REG_SWZ_W_SHIFT)
-	 );
-}
-
-static void
 NV30FPSetTexImageUnit(nvsFunc *shader, int unit)
 {
+   shader->inst[0] &= ~NV30_FP_OP_TEX_UNIT_SHIFT;
    shader->inst[0] |= (unit << NV30_FP_OP_TEX_UNIT_SHIFT);
 }
 
@@ -248,10 +246,26 @@ NV30FPSetSaturate(nvsFunc *shader)
 }
 
 static void
+NV30FPInitInstruction(nvsFunc *shader)
+{
+   unsigned int hwsrc;
+
+   shader->inst[0] = 0;
+
+   hwsrc = (NV30_FP_REG_TYPE_INPUT << NV30_FP_REG_TYPE_SHIFT) |
+      	   (NVS_SWZ_X << NV30_FP_REG_SWZ_X_SHIFT) |
+	   (NVS_SWZ_Y << NV30_FP_REG_SWZ_Y_SHIFT) |
+	   (NVS_SWZ_Z << NV30_FP_REG_SWZ_Z_SHIFT) |
+	   (NVS_SWZ_W << NV30_FP_REG_SWZ_W_SHIFT);
+   shader->inst[1] = hwsrc;
+   shader->inst[2] = hwsrc;
+   shader->inst[3] = hwsrc;
+}
+
+static void
 NV30FPSetLastInst(nvsFunc *shader)
 {
-   shader->inst[0] |= 1;
-	 
+   shader->inst[0] |= 1; 
 }
 
 /*******************************************************************************
@@ -669,13 +683,13 @@ NV30FPInitShaderFuncs(nvsFunc * shader)
    shader->UploadToHW		= NV30FPUploadToHW;
    shader->UpdateConst		= NV30FPUpdateConst;
 
+   shader->InitInstruction	= NV30FPInitInstruction;
    shader->SupportsOpcode	= NV30FPSupportsOpcode;
    shader->SetOpcode		= NV30FPSetOpcode;
    shader->SetCCUpdate		= NV30FPSetCCUpdate;
    shader->SetCondition		= NV30FPSetCondition;
    shader->SetResult		= NV30FPSetResult;
    shader->SetSource		= NV30FPSetSource;
-   shader->SetUnusedSource	= NV30FPSetUnusedSource;
    shader->SetTexImageUnit	= NV30FPSetTexImageUnit;
    shader->SetSaturate		= NV30FPSetSaturate;
    shader->SetLastInst		= NV30FPSetLastInst;
diff --git a/src/mesa/drivers/dri/nouveau/nv30_shader.h b/src/mesa/drivers/dri/nouveau/nv30_shader.h
index d0bf639930..7a027dd427 100644
--- a/src/mesa/drivers/dri/nouveau/nv30_shader.h
+++ b/src/mesa/drivers/dri/nouveau/nv30_shader.h
@@ -351,6 +351,7 @@
 #define NV30_FP_OP_INDEX_INPUT					(1 << 30)
 
 //== Register selection ==
+#define NV30_FP_REG_ALL_MASK					(0x1FFFF<<0)
 #define NV30_FP_REG_TYPE_SHIFT					0
 #define NV30_FP_REG_TYPE_MASK					(3 << 0)
 #	define NV30_FP_REG_TYPE_TEMP	0
diff --git a/src/mesa/drivers/dri/nouveau/nv40_vertprog.c b/src/mesa/drivers/dri/nouveau/nv40_vertprog.c
index 111c6de71b..f2cb3fb166 100644
--- a/src/mesa/drivers/dri/nouveau/nv40_vertprog.c
+++ b/src/mesa/drivers/dri/nouveau/nv40_vertprog.c
@@ -19,8 +19,13 @@ NV40VPSupportsOpcode(nvsFunc * shader, nvsOpcode op)
 static void
 NV40VPSetOpcode(nvsFunc *shader, unsigned int opcode, int slot)
 {
-   if (slot) shader->inst[1] |= (opcode << NV40_VP_INST_SCA_OPCODE_SHIFT);
-   else      shader->inst[1] |= (opcode << NV40_VP_INST_VEC_OPCODE_SHIFT);
+   if (slot) {
+      shader->inst[1] &= ~NV40_VP_INST_SCA_OPCODE_MASK;
+      shader->inst[1] |= (opcode << NV40_VP_INST_SCA_OPCODE_SHIFT);
+   } else {
+      shader->inst[1] &= ~NV40_VP_INST_VEC_OPCODE_MASK;
+      shader->inst[1] |= (opcode << NV40_VP_INST_VEC_OPCODE_SHIFT);
+   }
 }
 
 static void
@@ -36,7 +41,9 @@ NV40VPSetCondition(nvsFunc *shader, int on, nvsCond cond, int reg,
    unsigned int hwcond;
 
    if (on ) shader->inst[0] |= NV40_VP_INST_COND_TEST_ENABLE;
+   else     shader->inst[0] &= ~NV40_VP_INST_COND_TEST_ENABLE;
    if (reg) shader->inst[0] |= NV40_VP_INST_COND_REG_SELECT_1;
+   else     shader->inst[0] &= ~NV40_VP_INST_COND_REG_SELECT_1;
 
    switch (cond) {
    case NVS_COND_TR: hwcond = NV40_VP_INST_COND_TR; break;
@@ -52,8 +59,10 @@ NV40VPSetCondition(nvsFunc *shader, int on, nvsCond cond, int reg,
 	hwcond = NV40_VP_INST_COND_TR;
 	break;
    }
+   shader->inst[0] &= ~NV40_VP_INST_COND_MASK;
    shader->inst[0] |= (hwcond << NV40_VP_INST_COND_SHIFT);
 
+   shader->inst[0] &= ~NV40_VP_INST_COND_SWZ_ALL_MASK;
    shader->inst[0] |= (swizzle[NVS_SWZ_X] << NV40_VP_INST_COND_SWZ_X_SHIFT);
    shader->inst[0] |= (swizzle[NVS_SWZ_Y] << NV40_VP_INST_COND_SWZ_Y_SHIFT);
    shader->inst[0] |= (swizzle[NVS_SWZ_Z] << NV40_VP_INST_COND_SWZ_Z_SHIFT);
@@ -95,25 +104,31 @@ NV40VPSetResult(nvsFunc *shader, nvsRegister * dest, unsigned int mask,
 	hwidx = 0;
 	break;
       }
+      shader->inst[3] &= ~NV40_VP_INST_DEST_MASK;
       shader->inst[3] |= (hwidx << NV40_VP_INST_DEST_SHIFT);
 
-      if (slot) {
-	 shader->inst[3] |= NV40_VP_INST_SCA_RESULT;
-	 shader->inst[3] |= NV40_VP_INST_SCA_DEST_TEMP_MASK;
-      } else {
-	 shader->inst[0] |= NV40_VP_INST_VEC_RESULT;
-	 shader->inst[0] |= NV40_VP_INST_VEC_DEST_TEMP_MASK | (1<<20);
-      }
+      if (slot) shader->inst[3] |= NV40_VP_INST_SCA_RESULT;
+      else      shader->inst[0] |= NV40_VP_INST_VEC_RESULT;
    } else {
       /* NVS_FILE_TEMP || NVS_FILE_ADDRESS */
-      if (slot)
+      if (slot) {
+	 shader->inst[3] &= ~NV40_VP_INST_SCA_RESULT;
+	 shader->inst[3] &= ~NV40_VP_INST_SCA_DEST_TEMP_MASK;
 	 shader->inst[3] |= (dest->index << NV40_VP_INST_SCA_DEST_TEMP_SHIFT);
-      else
+      } else {
+	 shader->inst[0] &= ~NV40_VP_INST_VEC_RESULT;
+	 shader->inst[0] &= ~(NV40_VP_INST_VEC_DEST_TEMP_MASK | (1<<20));
 	 shader->inst[0] |= (dest->index << NV40_VP_INST_VEC_DEST_TEMP_SHIFT);
+      }
    }
 
-   if (slot) shader->inst[3] |= (hwmask << NV40_VP_INST_SCA_WRITEMASK_SHIFT);
-   else      shader->inst[3] |= (hwmask << NV40_VP_INST_VEC_WRITEMASK_SHIFT);
+   if (slot) {
+      shader->inst[3] &= ~NV40_VP_INST_SCA_WRITEMASK_MASK;
+      shader->inst[3] |= (hwmask << NV40_VP_INST_SCA_WRITEMASK_SHIFT);
+   } else {
+      shader->inst[3] &= ~NV40_VP_INST_VEC_WRITEMASK_MASK;
+      shader->inst[3] |= (hwmask << NV40_VP_INST_VEC_WRITEMASK_SHIFT);
+   }
 }
 
 static void
@@ -121,6 +136,8 @@ NV40VPInsertSource(nvsFunc *shader, unsigned int hw, int pos)
 {
    switch (pos) {
    case 0:
+      shader->inst[1] &= ~NV40_VP_INST_SRC0H_MASK;
+      shader->inst[2] &= ~NV40_VP_INST_SRC0L_MASK;
       shader->inst[1] |= ((hw & NV40_VP_SRC0_HIGH_MASK) >>
 	    NV40_VP_SRC0_HIGH_SHIFT)
 	 << NV40_VP_INST_SRC0H_SHIFT;
@@ -128,10 +145,13 @@ NV40VPInsertSource(nvsFunc *shader, unsigned int hw, int pos)
 	 << NV40_VP_INST_SRC0L_SHIFT;
       break;
    case 1:
+      shader->inst[2] &= ~NV40_VP_INST_SRC1_MASK;
       shader->inst[2] |= hw
 	 << NV40_VP_INST_SRC1_SHIFT;
       break;
    case 2:
+      shader->inst[2] &= ~NV40_VP_INST_SRC2H_MASK;
+      shader->inst[3] &= ~NV40_VP_INST_SRC2L_MASK;
       shader->inst[2] |= ((hw & NV40_VP_SRC2_HIGH_MASK) >>
 	    NV40_VP_SRC2_HIGH_SHIFT)
 	 << NV40_VP_INST_SRC2H_SHIFT;
@@ -155,24 +175,34 @@ NV40VPSetSource(nvsFunc *shader, nvsRegister * src, int pos)
    case NVS_FILE_ATTRIB:
       hw |= (NV40_VP_SRC_REG_TYPE_INPUT << NV40_VP_SRC_REG_TYPE_SHIFT);
 
+      shader->inst[1] &= ~NV40_VP_INST_INPUT_SRC_MASK;
       shader->inst[1] |= (src->index << NV40_VP_INST_INPUT_SRC_SHIFT);
       if (src->indexed) {
 	 shader->inst[0] |= NV40_VP_INST_INDEX_INPUT;
 	 if (src->addr_reg)
 	    shader->inst[0] |= NV40_VP_INST_ADDR_REG_SELECT_1;
+	 else
+	    shader->inst[0] &= ~NV40_VP_INST_ADDR_REG_SELECT_1;
+	 shader->inst[0] &= ~NV40_VP_INST_ADDR_SWZ_SHIFT;
 	 shader->inst[0] |= (src->addr_comp << NV40_VP_INST_ADDR_SWZ_SHIFT);
-      }
+      } else
+	 shader->inst[0] &= ~NV40_VP_INST_INDEX_INPUT;
       break;
    case NVS_FILE_CONST:
       hw |= (NV40_VP_SRC_REG_TYPE_CONST << NV40_VP_SRC_REG_TYPE_SHIFT);
 
+      shader->inst[1] &= ~NV40_VP_INST_CONST_SRC_MASK;
       shader->inst[1] |= (src->index << NV40_VP_INST_CONST_SRC_SHIFT);
       if (src->indexed) {
 	 shader->inst[3] |= NV40_VP_INST_INDEX_CONST;
 	 if (src->addr_reg)
 	    shader->inst[0] |= NV40_VP_INST_ADDR_REG_SELECT_1;
+	 else
+	    shader->inst[0] &= ~NV40_VP_INST_ADDR_REG_SELECT_1;
+	 shader->inst[0] &= ~NV40_VP_INST_ADDR_SWZ_MASK;
 	 shader->inst[0] |= (src->addr_comp << NV40_VP_INST_ADDR_SWZ_SHIFT);
-      }
+      } else
+	 shader->inst[3] &= ~NV40_VP_INST_INDEX_CONST;
       break;
    case NVS_FILE_TEMP:
       hw |= (NV40_VP_SRC_REG_TYPE_TEMP << NV40_VP_SRC_REG_TYPE_SHIFT);
@@ -189,6 +219,8 @@ NV40VPSetSource(nvsFunc *shader, nvsRegister * src, int pos)
 	 hw |= NV40_VP_SRC_NEGATE;
       if (src->abs)
 	 shader->inst[0] |= (1 << (21 + pos));
+      else
+	 shader->inst[0] &= ~(1 << (21 + pos));
       hw |= (src->swizzle[0] << NV40_VP_SRC_SWZ_X_SHIFT);
       hw |= (src->swizzle[1] << NV40_VP_SRC_SWZ_Y_SHIFT);
       hw |= (src->swizzle[2] << NV40_VP_SRC_SWZ_Z_SHIFT);
@@ -199,21 +231,30 @@ NV40VPSetSource(nvsFunc *shader, nvsRegister * src, int pos)
 }
 
 static void
-NV40VPSetUnusedSource(nvsFunc *shader, int pos)
+NV40VPInitInstruction(nvsFunc *shader)
 {
-   unsigned int hw;
-
-   hw = ((NV40_VP_SRC_REG_TYPE_INPUT << NV40_VP_SRC_REG_TYPE_SHIFT) |
-	 (NVS_SWZ_X << NV40_VP_SRC_SWZ_X_SHIFT) |
-	 (NVS_SWZ_Y << NV40_VP_SRC_SWZ_Y_SHIFT) |
-	 (NVS_SWZ_Z << NV40_VP_SRC_SWZ_Z_SHIFT) |
-	 (NVS_SWZ_W << NV40_VP_SRC_SWZ_W_SHIFT));
-
-   NV40VPInsertSource(shader, hw, pos);
+   unsigned int hwsrc = 0;
+
+   shader->inst[0] = /*NV40_VP_INST_VEC_RESULT | */
+      		     NV40_VP_INST_VEC_DEST_TEMP_MASK | (1<<20);
+   shader->inst[1] = 0;
+   shader->inst[2] = 0;
+   shader->inst[3] = NV40_VP_INST_SCA_RESULT |
+      		     NV40_VP_INST_SCA_DEST_TEMP_MASK |
+		     NV40_VP_INST_DEST_MASK;
+   
+   hwsrc = (NV40_VP_SRC_REG_TYPE_INPUT << NV40_VP_SRC_REG_TYPE_SHIFT) |
+      	   (NVS_SWZ_X << NV40_VP_SRC_SWZ_X_SHIFT) |
+      	   (NVS_SWZ_Y << NV40_VP_SRC_SWZ_Y_SHIFT) |
+      	   (NVS_SWZ_Z << NV40_VP_SRC_SWZ_Z_SHIFT) |
+      	   (NVS_SWZ_W << NV40_VP_SRC_SWZ_W_SHIFT);
+   NV40VPInsertSource(shader, hwsrc, 0);
+   NV40VPInsertSource(shader, hwsrc, 1);
+   NV40VPInsertSource(shader, hwsrc, 2);
 }
 
 static void
-NV40VPSetLastInst(nvsFunc *shader, int pos)
+NV40VPSetLastInst(nvsFunc *shader)
 {
    shader->inst[3] |= 1;
 }
@@ -611,13 +652,13 @@ NV40VPInitShaderFuncs(nvsFunc * shader)
    MOD_OPCODE(NVVP_TX_SOP, NV40_VP_INST_OP_PUSHA, NVS_OP_PUSHA,  3, -1, -1);
    MOD_OPCODE(NVVP_TX_SOP, NV40_VP_INST_OP_POPA , NVS_OP_POPA , -1, -1, -1);
 
+   shader->InitInstruction	= NV40VPInitInstruction;
    shader->SupportsOpcode	= NV40VPSupportsOpcode;
    shader->SetOpcode		= NV40VPSetOpcode;
    shader->SetCCUpdate		= NV40VPSetCCUpdate;
    shader->SetCondition		= NV40VPSetCondition;
    shader->SetResult		= NV40VPSetResult;
    shader->SetSource		= NV40VPSetSource;
-   shader->SetUnusedSource	= NV40VPSetUnusedSource;
    shader->SetLastInst		= NV40VPSetLastInst;
 
    shader->HasMergedInst	= NV40VPHasMergedInst;