Mesa (master): nvc0/ir: mark varyings as per-patch based on semantic name

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: 59438a4d0e8ffd7cc4c741d00eff0c87d9813b5f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=59438a4d0e8ffd7cc4c741d00eff0c87d9813b5f

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Sun Jul 20 12:17:46 2014 -0400

nvc0/ir: mark varyings as per-patch based on semantic name

Also add proper handling for PATCH semantics

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 .../drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp        |   14 ++++++++++++++
 src/gallium/drivers/nouveau/nvc0/nvc0_program.c          |    6 ++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index 2fcf41d..2b7e9eb 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -1036,6 +1036,13 @@ bool Source::scanDeclaration(const struct tgsi_full_declaration *decl)
                if (decl->Interp.Location || info->io.sampleInterp)
                   info->in[i].centroid = 1;
             }
+
+            if (sn == TGSI_SEMANTIC_PATCH ||
+                sn == TGSI_SEMANTIC_TESSOUTER ||
+                sn == TGSI_SEMANTIC_TESSINNER)
+               info->in[i].patch = 1;
+            if (sn == TGSI_SEMANTIC_PATCH)
+               info->numPatchConstants = MAX2(info->numPatchConstants, si + 1);
          }
       }
       break;
@@ -1070,6 +1077,13 @@ bool Source::scanDeclaration(const struct tgsi_full_declaration *decl)
          case TGSI_SEMANTIC_VIEWPORT_INDEX:
             info->io.viewportId = i;
             break;
+         case TGSI_SEMANTIC_PATCH:
+            info->numPatchConstants = MAX2(info->numPatchConstants, si + 1);
+            /* fallthrough */
+         case TGSI_SEMANTIC_TESSOUTER:
+         case TGSI_SEMANTIC_TESSINNER:
+            info->out[i].patch = 1;
+            break;
          default:
             break;
          }
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
index 014e681..80edfb1 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
@@ -36,6 +36,7 @@ nvc0_shader_input_address(unsigned sn, unsigned si, unsigned ubase)
    switch (sn) {
    case TGSI_SEMANTIC_TESSOUTER:    return 0x000 + si * 0x4;
    case TGSI_SEMANTIC_TESSINNER:    return 0x010 + si * 0x4;
+   case TGSI_SEMANTIC_PATCH:        return 0x020 + si * 0x10;
    case TGSI_SEMANTIC_PRIMID:       return 0x060;
    case TGSI_SEMANTIC_LAYER:        return 0x064;
    case TGSI_SEMANTIC_VIEWPORT_INDEX:return 0x068;
@@ -66,6 +67,7 @@ nvc0_shader_output_address(unsigned sn, unsigned si, unsigned ubase)
    switch (sn) {
    case TGSI_SEMANTIC_TESSOUTER:     return 0x000 + si * 0x4;
    case TGSI_SEMANTIC_TESSINNER:     return 0x010 + si * 0x4;
+   case TGSI_SEMANTIC_PATCH:         return 0x020 + si * 0x10;
    case TGSI_SEMANTIC_PRIMID:        return 0x060;
    case TGSI_SEMANTIC_LAYER:         return 0x064;
    case TGSI_SEMANTIC_VIEWPORT_INDEX:return 0x068;
@@ -120,8 +122,6 @@ nvc0_sp_assign_input_slots(struct nv50_ir_prog_info *info)
    for (i = 0; i < info->numInputs; ++i) {
       offset = nvc0_shader_input_address(info->in[i].sn,
                                          info->in[i].si, ubase);
-      if (info->in[i].patch && offset >= 0x20)
-         offset = 0x20 + info->in[i].si * 0x10;
 
       for (c = 0; c < 4; ++c)
          info->in[i].slot[c] = (offset + c * 0x4) / 4;
@@ -163,8 +163,6 @@ nvc0_sp_assign_output_slots(struct nv50_ir_prog_info *info)
    for (i = 0; i < info->numOutputs; ++i) {
       offset = nvc0_shader_output_address(info->out[i].sn,
                                           info->out[i].si, ubase);
-      if (info->out[i].patch && offset >= 0x20)
-         offset = 0x20 + info->out[i].si * 0x10;
 
       for (c = 0; c < 4; ++c)
          info->out[i].slot[c] = (offset + c * 0x4) / 4;