nv40: enable base vertex

Still appears to have issues with negative indices less than -1M, but
that's a corner case of a corner case.

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

diff --git a/src/gallium/drivers/nouveau/nv30/nv30-40_3d.xml.h b/src/gallium/drivers/nouveau/nv30/nv30-40_3d.xml.h
index 447f4b3..95468e5 100644 (file)
--- a/src/gallium/drivers/nouveau/nv30/nv30-40_3d.xml.h
+++ b/src/gallium/drivers/nouveau/nv30/nv30-40_3d.xml.h
@@ -1459,6 +1459,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #define NV40_3D_VTX_CACHE_INVALIDATE                           0x00001714
 
+#define NV40_3D_VB_ELEMENT_BASE                                        0x0000173c
+
 #define NV30_3D_VTXFMT(i0)                                    (0x00001740 + 0x4*(i0))
 #define NV30_3D_VTXFMT__ESIZE                                  0x00000004
 #define NV30_3D_VTXFMT__LEN                                    0x00000010

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_context.h b/src/gallium/drivers/nouveau/nv30/nv30_context.h
index 592cdbe..7181336 100644 (file)
--- a/src/gallium/drivers/nouveau/nv30/nv30_context.h
+++ b/src/gallium/drivers/nouveau/nv30/nv30_context.h
@@ -51,6 +51,7 @@ struct nv30_context {
       unsigned rt_enable;
       unsigned scissor_off;
       unsigned num_vtxelts;
+      int index_bias;
       boolean  prim_restart;
       struct nv30_fragprog *fragprog;
    } state;

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_vbo.c b/src/gallium/drivers/nouveau/nv30/nv30_vbo.c
index d4e384b..faa8812 100644 (file)
--- a/src/gallium/drivers/nouveau/nv30/nv30_vbo.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_vbo.c
@@ -461,13 +461,11 @@ nv30_draw_elements(struct nv30_context *nv30, boolean shorten,
    struct nouveau_object *eng3d = nv30->screen->eng3d;
    unsigned prim = nv30_prim_gl(mode);
 
-#if 0 /*XXX*/
-   if (index_bias != nv30->state.index_bias) {
-      BEGIN_NV04(push, NV30_3D(VB_ELEMENT_BASE), 1);
+   if (eng3d->oclass >= NV40_3D_CLASS && index_bias != nv30->state.index_bias) {
+      BEGIN_NV04(push, NV40_3D(VB_ELEMENT_BASE), 1);
       PUSH_DATA (push, index_bias);
       nv30->state.index_bias = index_bias;
    }
-#endif
 
    if (eng3d->oclass == NV40_3D_CLASS && index_size > 1 &&
        nv30->idxbuf.buffer) {