Mesa (9.0): i965/vs: Create a 'lod_type' temporary for ir->lod_info.lod-> type.

[Kenneth Graunke]

Module: Mesa
Branch: 9.0
Commit: de150e24781cfb9f2f7e62355f3af68d23c681df
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=de150e24781cfb9f2f7e62355f3af68d23c681df

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Wed Jan 16 19:08:12 2013 -0800

i965/vs: Create a 'lod_type' temporary for ir->lod_info.lod->type.

This is purely a refactor.  However, in a moment, we'll want to set
lod_type to float for ir_tex, where ir->lod_info.lod is NULL.

NOTE: This is a candidate for stable branches (for the next patch).

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Ian Romanick <idr at freedesktop.org>
(cherry picked from commit 56ce55d198af65d4a9de7119eb9e2417296c54ea)

---

 src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 59428a1..e95a5a1 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1853,6 +1853,7 @@ vec4_visitor::visit(ir_texture *ir)
       shadow_comparitor = this->result;
    }
 
+   const glsl_type *lod_type;
    src_reg lod, dPdx, dPdy;
    switch (ir->op) {
    case ir_txf:
@@ -1860,6 +1861,7 @@ vec4_visitor::visit(ir_texture *ir)
    case ir_txs:
       ir->lod_info.lod->accept(this);
       lod = this->result;
+      lod_type = ir->lod_info.lod->type;
       break;
    case ir_txd:
       ir->lod_info.grad.dPdx->accept(this);
@@ -1867,6 +1869,8 @@ vec4_visitor::visit(ir_texture *ir)
 
       ir->lod_info.grad.dPdy->accept(this);
       dPdy = this->result;
+
+      lod_type = ir->lod_info.grad.dPdx->type;
       break;
    case ir_tex:
    case ir_txb:
@@ -1908,8 +1912,7 @@ vec4_visitor::visit(ir_texture *ir)
 
    if (ir->op == ir_txs) {
       int writemask = intel->gen == 4 ? WRITEMASK_W : WRITEMASK_X;
-      emit(MOV(dst_reg(MRF, param_base, ir->lod_info.lod->type, writemask),
-	   lod));
+      emit(MOV(dst_reg(MRF, param_base, lod_type, writemask), lod));
    } else {
       int i, coord_mask = 0, zero_mask = 0;
       /* Load the coordinate */
@@ -1967,12 +1970,12 @@ vec4_visitor::visit(ir_texture *ir)
 	    mrf = param_base;
 	    writemask = WRITEMASK_Z;
 	 }
-	 emit(MOV(dst_reg(MRF, mrf, ir->lod_info.lod->type, writemask), lod));
+	 emit(MOV(dst_reg(MRF, mrf, lod_type, writemask), lod));
       } else if (ir->op == ir_txf) {
-	 emit(MOV(dst_reg(MRF, param_base, ir->lod_info.lod->type, WRITEMASK_W),
+	 emit(MOV(dst_reg(MRF, param_base, lod_type, WRITEMASK_W),
 		  lod));
       } else if (ir->op == ir_txd) {
-	 const glsl_type *type = ir->lod_info.grad.dPdx->type;
+	 const glsl_type *type = lod_type;
 
 	 if (intel->gen >= 5) {
 	    dPdx.swizzle = BRW_SWIZZLE4(SWIZZLE_X,SWIZZLE_X,SWIZZLE_Y,SWIZZLE_Y);