nv50,nvc0: handle user index buffers

4 files changed, 25 insertions, 23 deletions

diff --git a/src/gallium/drivers/nv50/nv50_push.c b/src/gallium/drivers/nv50/nv50_push.c
index 3abe189e7b5..1f7bc7679f0 100644
--- a/src/gallium/drivers/nv50/nv50_push.c
+++ b/src/gallium/drivers/nv50/nv50_push.c
@@ -13,7 +13,7 @@
 struct push_context {
    struct nouveau_pushbuf *push;
 
-   void *idxbuf;
+   const void *idxbuf;
 
    float edgeflag;
    int edgeflag_attr;
@@ -234,9 +234,13 @@ nv50_push_vbo(struct nv50_context *nv50, const struct pipe_draw_info *info)
    }
 
    if (info->indexed) {
-      ctx.idxbuf = nouveau_resource_map_offset(&nv50->base,
-                                               nv04_resource(nv50->idxbuf.buffer),
-                                               nv50->idxbuf.offset, NOUVEAU_BO_RD);
+      if (nv50->idxbuf.buffer) {
+         ctx.idxbuf = nouveau_resource_map_offset(&nv50->base,
+            nv04_resource(nv50->idxbuf.buffer), nv50->idxbuf.offset,
+            NOUVEAU_BO_RD);
+      } else {
+         ctx.idxbuf = nv50->idxbuf.user_buffer;
+      }
       if (!ctx.idxbuf)
          return;
       index_size = nv50->idxbuf.index_size;
diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index 9f356ff6556..1874f3ea81a 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -152,9 +152,9 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
    case PIPE_CAP_USER_VERTEX_BUFFERS:
-   case PIPE_CAP_USER_INDEX_BUFFERS:
       return 0; /* state trackers will know better */
    case PIPE_CAP_USER_CONSTANT_BUFFERS:
+   case PIPE_CAP_USER_INDEX_BUFFERS:
       return 1;
    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
       return 256;
diff --git a/src/gallium/drivers/nv50/nv50_state.c b/src/gallium/drivers/nv50/nv50_state.c
index eea3ffd5270..1e7d17a7197 100644
--- a/src/gallium/drivers/nv50/nv50_state.c
+++ b/src/gallium/drivers/nv50/nv50_state.c
@@ -911,12 +911,15 @@ nv50_set_index_buffer(struct pipe_context *pipe,
    if (nv50->idxbuf.buffer)
       nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_INDEX);
 
-   if (ib && ib->buffer) {
+   if (ib) {
       pipe_resource_reference(&nv50->idxbuf.buffer, ib->buffer);
-      nv50->idxbuf.offset = ib->offset;
       nv50->idxbuf.index_size = ib->index_size;
-      if (nouveau_resource_mapped_by_gpu(ib->buffer))
+      if (ib->buffer) {
+         nv50->idxbuf.offset = ib->offset;
          BCTX_REFN(nv50->bufctx_3d, INDEX, nv04_resource(ib->buffer), RD);
+      } else {
+         nv50->idxbuf.user_buffer = ib->user_buffer;
+      }
    } else {
       pipe_resource_reference(&nv50->idxbuf.buffer, NULL);
    }
diff --git a/src/gallium/drivers/nv50/nv50_vbo.c b/src/gallium/drivers/nv50/nv50_vbo.c
index 323677eaf80..d21d699bebe 100644
--- a/src/gallium/drivers/nv50/nv50_vbo.c
+++ b/src/gallium/drivers/nv50/nv50_vbo.c
@@ -454,7 +454,7 @@ nv50_draw_arrays(struct nv50_context *nv50,
 }
 
 static void
-nv50_draw_elements_inline_u08(struct nouveau_pushbuf *push, uint8_t *map,
+nv50_draw_elements_inline_u08(struct nouveau_pushbuf *push, const uint8_t *map,
                               unsigned start, unsigned count)
 {
    map += start;
@@ -480,7 +480,7 @@ nv50_draw_elements_inline_u08(struct nouveau_pushbuf *push, uint8_t *map,
 }
 
 static void
-nv50_draw_elements_inline_u16(struct nouveau_pushbuf *push, uint16_t *map,
+nv50_draw_elements_inline_u16(struct nouveau_pushbuf *push, const uint16_t *map,
                               unsigned start, unsigned count)
 {
    map += start;
@@ -503,7 +503,7 @@ nv50_draw_elements_inline_u16(struct nouveau_pushbuf *push, uint16_t *map,
 }
 
 static void
-nv50_draw_elements_inline_u32(struct nouveau_pushbuf *push, uint32_t *map,
+nv50_draw_elements_inline_u32(struct nouveau_pushbuf *push, const uint32_t *map,
                               unsigned start, unsigned count)
 {
    map += start;
@@ -520,7 +520,8 @@ nv50_draw_elements_inline_u32(struct nouveau_pushbuf *push, uint32_t *map,
 }
 
 static void
-nv50_draw_elements_inline_u32_short(struct nouveau_pushbuf *push, uint32_t *map,
+nv50_draw_elements_inline_u32_short(struct nouveau_pushbuf *push,
+                                    const uint32_t *map,
                                     unsigned start, unsigned count)
 {
    map += start;
@@ -548,8 +549,6 @@ nv50_draw_elements(struct nv50_context *nv50, boolean shorten,
                    unsigned instance_count, int32_t index_bias)
 {
    struct nouveau_pushbuf *push = nv50->base.pushbuf;
-   void *data;
-   struct nv04_resource *buf = nv04_resource(nv50->idxbuf.buffer);
    unsigned prim;
    const unsigned index_size = nv50->idxbuf.index_size;
 
@@ -561,12 +560,13 @@ nv50_draw_elements(struct nv50_context *nv50, boolean shorten,
       nv50->state.index_bias = index_bias;
    }
 
-   if (nouveau_resource_mapped_by_gpu(nv50->idxbuf.buffer)) {
+   if (nv50->idxbuf.buffer) {
+      struct nv04_resource *buf = nv04_resource(nv50->idxbuf.buffer);
       unsigned pb_start;
       unsigned pb_bytes;
-      const unsigned base = buf->offset;
+      const unsigned base = buf->offset + nv50->idxbuf.offset;
 
-      start += nv50->idxbuf.offset >> (index_size >> 1);
+      assert(nouveau_resource_mapped_by_gpu(nv50->idxbuf.buffer));
 
       while (instance_count--) {
          BEGIN_NV04(push, NV50_3D(VERTEX_BEGIN_GL), 1);
@@ -609,10 +609,7 @@ nv50_draw_elements(struct nv50_context *nv50, boolean shorten,
          prim |= NV50_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT;
       }
    } else {
-      data = nouveau_resource_map_offset(&nv50->base, buf,
-                                         nv50->idxbuf.offset, NOUVEAU_BO_RD);
-      if (!data)
-         return;
+      const void *data = nv50->idxbuf.user_buffer;
 
       while (instance_count--) {
          BEGIN_NV04(push, NV50_3D(VERTEX_BEGIN_GL), 1);
@@ -749,8 +746,6 @@ nv50_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    if (info->indexed) {
       boolean shorten = info->max_index <= 65535;
 
-      assert(nv50->idxbuf.buffer);
-
       if (info->primitive_restart != nv50->state.prim_restart) {
          if (info->primitive_restart) {
             BEGIN_NV04(push, NV50_3D(PRIM_RESTART_ENABLE), 2);