nvc0/ir: add emission for SULDB and SUSTx

[mesa.git] / src / gallium / drivers / nouveau / codegen / nv50_ir_lowering_gm107.cpp

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_gm107.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_gm107.cpp
index 420cc4ef7c0f0bc4d7bffb9672e737dd0a82c76d..a5deaef14e036beb26c0d96cececdd93b81a05b9 100644 (file)
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_gm107.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_gm107.cpp
@@ -57,7 +57,7 @@ GM107LoweringPass::handleManualTXD(TexInstruction *i)
    Instruction *tex, *add;
    Value *zero = bld.loadImm(bld.getSSA(), 0);
    int l, c;
-   const int dim = i->tex.target.getDim();
+   const int dim = i->tex.target.getDim() + i->tex.target.isCube();
    const int array = i->tex.target.isArray();
 
    i->op = OP_TEX; // no need to clone dPdx/dPdy later
@@ -67,6 +67,7 @@ GM107LoweringPass::handleManualTXD(TexInstruction *i)
    tmp = bld.getScratch();
 
    for (l = 0; l < 4; ++l) {
+      Value *src[3], *val;
       // mov coordinates from lane l to all lanes
       bld.mkOp(OP_QUADON, TYPE_NONE, NULL);
       for (c = 0; c < dim; ++c) {
@@ -92,10 +93,25 @@ GM107LoweringPass::handleManualTXD(TexInstruction *i)
          add->lanes = 1; /* abused for .ndv */
       }
 
+      // normalize cube coordinates if necessary
+      if (i->tex.target.isCube()) {
+         for (c = 0; c < 3; ++c)
+            src[c] = bld.mkOp1v(OP_ABS, TYPE_F32, bld.getSSA(), crd[c]);
+         val = bld.getScratch();
+         bld.mkOp2(OP_MAX, TYPE_F32, val, src[0], src[1]);
+         bld.mkOp2(OP_MAX, TYPE_F32, val, src[2], val);
+         bld.mkOp1(OP_RCP, TYPE_F32, val, val);
+         for (c = 0; c < 3; ++c)
+            src[c] = bld.mkOp2v(OP_MUL, TYPE_F32, bld.getSSA(), crd[c], val);
+      } else {
+         for (c = 0; c < dim; ++c)
+            src[c] = crd[c];
+      }
+
       // texture
       bld.insert(tex = cloneForward(func, i));
       for (c = 0; c < dim; ++c)
-         tex->setSrc(c + array, crd[c]);
+         tex->setSrc(c + array, src[c]);
       bld.mkOp(OP_QUADPOP, TYPE_NONE, NULL);
 
       // save results