nv50,nvc0: use a face sysval to avoid the useless back-and-forth conversion

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

5 files changed, 2 insertions, 9 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 e3db975b26..7b313f3c39 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -1660,8 +1660,6 @@ Converter::fetchSrc(tgsi::Instruction::SrcRegister src, int c, Value *ptr)
          // don't load masked inputs, won't be assigned a slot
          if (!ptr && !(info->in[idx].mask & (1 << swz)))
             return loadImm(NULL, swz == TGSI_SWIZZLE_W ? 1.0f : 0.0f);
-         if (!ptr && info->in[idx].sn == TGSI_SEMANTIC_FACE)
-            return mkOp1v(OP_RDSV, TYPE_F32, getSSA(), mkSysVal(SV_FACE, 0));
          return interpolate(src, c, shiftAddress(ptr));
       } else
       if (prog->getType() == Program::TYPE_GEOMETRY) {
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_program.c b/src/gallium/drivers/nouveau/nv50/nv50_program.c
index b63584e0a0..888d62e1c5 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_program.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_program.c
@@ -148,7 +148,6 @@ nv50_fragprog_assign_slots(struct nv50_ir_prog_info *info)
    for (m = 0, i = 0; i < info->numInputs; ++i) {
       switch (info->in[i].sn) {
       case TGSI_SEMANTIC_POSITION:
-      case TGSI_SEMANTIC_FACE:
          continue;
       default:
          m += info->in[i].flat ? 0 : 1;
@@ -166,9 +165,6 @@ nv50_fragprog_assign_slots(struct nv50_ir_prog_info *info)
          for (c = 0; c < 4; ++c)
             if (info->in[i].mask & (1 << c))
                info->in[i].slot[c] = nintp++;
-      } else
-      if (info->in[i].sn == TGSI_SEMANTIC_FACE) {
-         info->in[i].slot[0] = 255;
       } else {
          unsigned j = info->in[i].flat ? m++ : n++;
 
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index 867b366c98..56c67e0ddf 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -182,6 +182,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_SHAREABLE_SHADERS:
    case PIPE_CAP_CLEAR_TEXTURE:
    case PIPE_CAP_COMPUTE:
+   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
       return 1;
    case PIPE_CAP_SEAMLESS_CUBE_MAP:
       return 1; /* class_3d >= NVA0_3D_CLASS; */
@@ -222,7 +223,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_DRAW_PARAMETERS:
    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
-   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       return 0;
 
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
index 7cb86e3b90..c3b5362163 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
@@ -55,7 +55,6 @@ nvc0_shader_input_address(unsigned sn, unsigned si)
    case TGSI_SEMANTIC_INSTANCEID:   return 0x2f8;
    case TGSI_SEMANTIC_VERTEXID:     return 0x2fc;
    case TGSI_SEMANTIC_TEXCOORD:     return 0x300 + si * 0x10;
-   case TGSI_SEMANTIC_FACE:         return 0x3fc;
    default:
       assert(!"invalid TGSI input semantic");
       return ~0;
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 9a95a54f9c..33dd17ebec 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -188,6 +188,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    case PIPE_CAP_MULTI_DRAW_INDIRECT:
    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
+   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
       return 1;
    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
       return (class_3d >= NVE4_3D_CLASS) ? 1 : 0;
@@ -211,7 +212,6 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
-   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       return 0;