[Mesa-stable] [PATCH] nv50: avoid using inline vertex data submit when gl_VertexID is used

[Ilia Mirkin]

The hardware only generates vertexid when vertices come from a VBO. This
fixes:

  vertexid-drawelements
  vertexid-drawarrays

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: "11.0" <mesa-stable at lists.freedesktop.org>
---
 src/gallium/drivers/nouveau/nv50/nv50_program.c        | 1 +
 src/gallium/drivers/nouveau/nv50/nv50_program.h        | 1 +
 src/gallium/drivers/nouveau/nv50/nv50_state_validate.c | 3 ++-
 src/gallium/drivers/nouveau/nv50/nv50_vbo.c            | 8 ++++++++
 4 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/nouveau/nv50/nv50_program.c b/src/gallium/drivers/nouveau/nv50/nv50_program.c
index 02dc367..eff4477 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_program.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_program.c
@@ -66,6 +66,7 @@ nv50_vertprog_assign_slots(struct nv50_ir_prog_info *info)
       case TGSI_SEMANTIC_VERTEXID:
          prog->vp.attrs[2] |= NV50_3D_VP_GP_BUILTIN_ATTR_EN_VERTEX_ID;
          prog->vp.attrs[2] |= NV50_3D_VP_GP_BUILTIN_ATTR_EN_VERTEX_ID_DRAW_ARRAYS_ADD_START;
+         prog->vp.vertexid = 1;
          continue;
       default:
          break;
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_program.h b/src/gallium/drivers/nouveau/nv50/nv50_program.h
index 5d3ff56..f4e8e94 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_program.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_program.h
@@ -76,6 +76,7 @@ struct nv50_program {
       ubyte psiz;        /* output slot of point size */
       ubyte bfc[2];      /* indices into varying for FFC (FP) or BFC (VP) */
       ubyte edgeflag;
+      ubyte vertexid;
       ubyte clpd[2];     /* output slot of clip distance[i]'s 1st component */
       ubyte clpd_nr;
    } vp;
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c b/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
index b304a17..66dcf43 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
@@ -503,7 +503,8 @@ static struct state_validate {
     { nv50_validate_samplers,      NV50_NEW_SAMPLERS },
     { nv50_stream_output_validate, NV50_NEW_STRMOUT |
                                    NV50_NEW_VERTPROG | NV50_NEW_GMTYPROG },
-    { nv50_vertex_arrays_validate, NV50_NEW_VERTEX | NV50_NEW_ARRAYS },
+    { nv50_vertex_arrays_validate, NV50_NEW_VERTEX | NV50_NEW_ARRAYS |
+                                   NV50_NEW_VERTPROG },
     { nv50_validate_min_samples,   NV50_NEW_MIN_SAMPLES },
 };
 #define validate_list_len (sizeof(validate_list) / sizeof(validate_list[0]))
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_vbo.c b/src/gallium/drivers/nouveau/nv50/nv50_vbo.c
index 600b973..fb4305f 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_vbo.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_vbo.c
@@ -301,6 +301,14 @@ nv50_vertex_arrays_validate(struct nv50_context *nv50)
    unsigned i;
    const unsigned n = MAX2(vertex->num_elements, nv50->state.num_vtxelts);
 
+   /* A vertexid is not generated for inline data uploads. Have to use a
+    * VBO. This check must come after the vertprog has been validated,
+    * otherwise vertexid may be unset.
+    */
+   assert(nv50->vertprog->translated);
+   if (nv50->vertprog->vp.vertexid)
+      nv50->vbo_push_hint = 0;
+
    if (unlikely(vertex->need_conversion))
       nv50->vbo_fifo = ~0;
    else
-- 
2.4.6