Added extra needed files

1 files changed, 613 insertions, 0 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c b/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c
new file mode 100644
index 000000000..9306fcd5c
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c
@@ -0,0 +1,613 @@
+/**************************************************************************

+ *

+ * Copyright 2011 Marek Olšák <maraeo@gmail.com>

+ * All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the

+ * "Software"), to deal in the Software without restriction, including

+ * without limitation the rights to use, copy, modify, merge, publish,

+ * distribute, sub license, and/or sell copies of the Software, and to

+ * permit persons to whom the Software is furnished to do so, subject to

+ * the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the

+ * next paragraph) shall be included in all copies or substantial portions

+ * of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

+ * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR

+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+ *

+ **************************************************************************/

+

+#include "util/u_vbuf_mgr.h"

+

+#include "util/u_format.h"

+#include "util/u_inlines.h"

+#include "util/u_memory.h"

+#include "util/u_upload_mgr.h"

+#include "translate/translate.h"

+#include "translate/translate_cache.h"

+

+/* Hardware vertex fetcher limitations can be described by this structure. */

+struct u_vbuf_caps {

+   /* Vertex format CAPs. */

+   /* TRUE if hardware supports it. */

+   unsigned format_fixed32:1;    /* PIPE_FORMAT_*32*_FIXED */

+   unsigned format_float16:1;    /* PIPE_FORMAT_*16*_FLOAT */

+   unsigned format_float64:1;    /* PIPE_FORMAT_*64*_FLOAT */

+   unsigned format_norm32:1;     /* PIPE_FORMAT_*32*NORM */

+   unsigned format_scaled32:1;   /* PIPE_FORMAT_*32*SCALED */

+

+   /* Whether vertex fetches don't have to be dword-aligned. */

+   /* TRUE if hardware supports it. */

+   unsigned fetch_dword_unaligned:1;

+};

+

+struct u_vbuf_mgr_elements {

+   unsigned count;

+   struct pipe_vertex_element ve[PIPE_MAX_ATTRIBS];

+

+   /* If (velem[i].src_format != real_format[i]), the vertex buffer

+    * referenced by the vertex element cannot be used for rendering and

+    * its vertex data must be translated to real_format[i]. */

+   enum pipe_format native_format[PIPE_MAX_ATTRIBS];

+   unsigned native_format_size[PIPE_MAX_ATTRIBS];

+

+   /* This might mean two things:

+    * - src_format != native_format, as discussed above.

+    * - src_offset % 4 != 0 (if the caps don't allow such an offset). */

+   boolean incompatible_layout;

+};

+

+struct u_vbuf_mgr_priv {

+   struct u_vbuf_mgr b;

+   struct u_vbuf_caps caps;

+   struct pipe_context *pipe;

+

+   struct translate_cache *translate_cache;

+   unsigned translate_vb_slot;

+

+   struct u_vbuf_mgr_elements *ve;

+   void *saved_ve, *fallback_ve;

+   boolean ve_binding_lock;

+

+   boolean any_user_vbs;

+   boolean incompatible_vb_layout;

+};

+

+static void u_vbuf_mgr_init_format_caps(struct u_vbuf_mgr_priv *mgr)

+{

+   struct pipe_screen *screen = mgr->pipe->screen;

+

+   mgr->caps.format_fixed32 =

+      screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER);

+

+   mgr->caps.format_float16 =

+      screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER);

+

+   mgr->caps.format_float64 =

+      screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER);

+

+   mgr->caps.format_norm32 =

+      screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER) &&

+      screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER);

+

+   mgr->caps.format_scaled32 =

+      screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER) &&

+      screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER,

+                                  0, PIPE_BIND_VERTEX_BUFFER);

+}

+

+struct u_vbuf_mgr *

+u_vbuf_mgr_create(struct pipe_context *pipe,

+                  unsigned upload_buffer_size,

+                  unsigned upload_buffer_alignment,

+                  unsigned upload_buffer_bind,

+                  enum u_fetch_alignment fetch_alignment)

+{

+   struct u_vbuf_mgr_priv *mgr = CALLOC_STRUCT(u_vbuf_mgr_priv);

+

+   mgr->pipe = pipe;

+   mgr->translate_cache = translate_cache_create();

+

+   mgr->b.uploader = u_upload_create(pipe, upload_buffer_size,

+                                     upload_buffer_alignment,

+                                     upload_buffer_bind);

+

+   mgr->caps.fetch_dword_unaligned =

+         fetch_alignment == U_VERTEX_FETCH_BYTE_ALIGNED;

+

+   u_vbuf_mgr_init_format_caps(mgr);

+

+   return &mgr->b;

+}

+

+void u_vbuf_mgr_destroy(struct u_vbuf_mgr *mgrb)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+   unsigned i;

+

+   for (i = 0; i < mgr->b.nr_real_vertex_buffers; i++) {

+      pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);

+      pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);

+   }

+

+   translate_cache_destroy(mgr->translate_cache);

+   u_upload_destroy(mgr->b.uploader);

+   FREE(mgr);

+}

+

+

+static void u_vbuf_translate_begin(struct u_vbuf_mgr_priv *mgr,

+                                   int min_index, int max_index,

+                                   boolean *upload_flushed)

+{

+   struct translate_key key;

+   struct translate_element *te;

+   unsigned tr_elem_index[PIPE_MAX_ATTRIBS];

+   struct translate *tr;

+   boolean vb_translated[PIPE_MAX_ATTRIBS] = {0};

+   uint8_t *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map;

+   struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0};

+   struct pipe_resource *out_buffer = NULL;

+   unsigned i, num_verts, out_offset;

+   struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS];

+

+   memset(&key, 0, sizeof(key));

+   memset(tr_elem_index, 0xff, sizeof(tr_elem_index));

+

+   /* Initialize the translate key, i.e. the recipe how vertices should be

+     * translated. */

+   memset(&key, 0, sizeof key);

+   for (i = 0; i < mgr->ve->count; i++) {

+      struct pipe_vertex_buffer *vb =

+            &mgr->b.vertex_buffer[mgr->ve->ve[i].vertex_buffer_index];

+      enum pipe_format output_format = mgr->ve->native_format[i];

+      unsigned output_format_size = mgr->ve->native_format_size[i];

+

+      /* Check for support. */

+      if (mgr->ve->ve[i].src_format == mgr->ve->native_format[i] &&

+          (mgr->caps.fetch_dword_unaligned ||

+           (vb->buffer_offset % 4 == 0 &&

+            vb->stride % 4 == 0 &&

+            mgr->ve->ve[i].src_offset % 4 == 0))) {

+         continue;

+      }

+

+      /* Workaround for translate: output floats instead of halfs. */

+      switch (output_format) {

+      case PIPE_FORMAT_R16_FLOAT:

+         output_format = PIPE_FORMAT_R32_FLOAT;

+         output_format_size = 4;

+         break;

+      case PIPE_FORMAT_R16G16_FLOAT:

+         output_format = PIPE_FORMAT_R32G32_FLOAT;

+         output_format_size = 8;

+         break;

+      case PIPE_FORMAT_R16G16B16_FLOAT:

+         output_format = PIPE_FORMAT_R32G32B32_FLOAT;

+         output_format_size = 12;

+         break;

+      case PIPE_FORMAT_R16G16B16A16_FLOAT:

+         output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;

+         output_format_size = 16;

+         break;

+      default:;

+      }

+

+      /* Add this vertex element. */

+      te = &key.element[key.nr_elements];

+      /*te->type;

+        te->instance_divisor;*/

+      te->input_buffer = mgr->ve->ve[i].vertex_buffer_index;

+      te->input_format = mgr->ve->ve[i].src_format;

+      te->input_offset = mgr->ve->ve[i].src_offset;

+      te->output_format = output_format;

+      te->output_offset = key.output_stride;

+

+      key.output_stride += output_format_size;

+      vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE;

+      tr_elem_index[i] = key.nr_elements;

+      key.nr_elements++;

+   }

+

+   /* Get a translate object. */

+   tr = translate_cache_find(mgr->translate_cache, &key);

+

+   /* Map buffers we want to translate. */

+   for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {

+      if (vb_translated[i]) {

+         struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i];

+

+         vb_map[i] = pipe_buffer_map(mgr->pipe, vb->buffer,

+                                     PIPE_TRANSFER_READ, &vb_transfer[i]);

+

+         tr->set_buffer(tr, i,

+                        vb_map[i] + vb->buffer_offset + vb->stride * min_index,

+                        vb->stride, ~0);

+      }

+   }

+

+   /* Create and map the output buffer. */

+   num_verts = max_index + 1 - min_index;

+

+   u_upload_alloc(mgr->b.uploader,

+                  key.output_stride * min_index,

+                  key.output_stride * num_verts,

+                  &out_offset, &out_buffer, upload_flushed,

+                  (void**)&out_map);

+

+   out_offset -= key.output_stride * min_index;

+

+   /* Translate. */

+   tr->run(tr, 0, num_verts, 0, out_map);

+

+   /* Unmap all buffers. */

+   for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {

+      if (vb_translated[i]) {

+         pipe_buffer_unmap(mgr->pipe, vb_transfer[i]);

+      }

+   }

+

+   /* Setup the new vertex buffer in the first free slot. */

+   mgr->translate_vb_slot = ~0;

+   for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {

+      if (!mgr->b.vertex_buffer[i].buffer) {

+         mgr->translate_vb_slot = i;

+

+         if (i >= mgr->b.nr_vertex_buffers) {

+            mgr->b.nr_real_vertex_buffers = i+1;

+         }

+         break;

+      }

+   }

+

+   if (mgr->translate_vb_slot != ~0) {

+      /* Setup the new vertex buffer. */

+      pipe_resource_reference(

+            &mgr->b.real_vertex_buffer[mgr->translate_vb_slot], out_buffer);

+      mgr->b.vertex_buffer[mgr->translate_vb_slot].buffer_offset = out_offset;

+      mgr->b.vertex_buffer[mgr->translate_vb_slot].stride = key.output_stride;

+

+      /* Setup new vertex elements. */

+      for (i = 0; i < mgr->ve->count; i++) {

+         if (tr_elem_index[i] < key.nr_elements) {

+            te = &key.element[tr_elem_index[i]];

+            new_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor;

+            new_velems[i].src_format = te->output_format;

+            new_velems[i].src_offset = te->output_offset;

+            new_velems[i].vertex_buffer_index = mgr->translate_vb_slot;

+         } else {

+            memcpy(&new_velems[i], &mgr->ve->ve[i],

+                   sizeof(struct pipe_vertex_element));

+         }

+      }

+

+      mgr->fallback_ve =

+            mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count,

+                                                    new_velems);

+

+      /* Preserve saved_ve. */

+      mgr->ve_binding_lock = TRUE;

+      mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve);

+      mgr->ve_binding_lock = FALSE;

+   }

+

+   pipe_resource_reference(&out_buffer, NULL);

+}

+

+static void u_vbuf_translate_end(struct u_vbuf_mgr_priv *mgr)

+{

+   if (mgr->fallback_ve == NULL) {

+      return;

+   }

+

+   /* Restore vertex elements. */

+   /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */

+   mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve);

+   mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve);

+   mgr->fallback_ve = NULL;

+

+   /* Delete the now-unused VBO. */

+   pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->translate_vb_slot],

+                           NULL);

+   mgr->b.nr_real_vertex_buffers = mgr->b.nr_vertex_buffers;

+}

+

+#define FORMAT_REPLACE(what, withwhat) \

+    case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break

+

+struct u_vbuf_mgr_elements *

+u_vbuf_mgr_create_vertex_elements(struct u_vbuf_mgr *mgrb,

+                                  unsigned count,

+                                  const struct pipe_vertex_element *attribs,

+                                  struct pipe_vertex_element *native_attribs)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+   unsigned i;

+   struct u_vbuf_mgr_elements *ve = CALLOC_STRUCT(u_vbuf_mgr_elements);

+

+   ve->count = count;

+

+   if (!count) {

+      return ve;

+   }

+

+   memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count);

+   memcpy(native_attribs, attribs, sizeof(struct pipe_vertex_element) * count);

+

+   /* Set the best native format in case the original format is not

+    * supported. */

+   for (i = 0; i < count; i++) {

+      enum pipe_format format = ve->ve[i].src_format;

+

+      /* Choose a native format.

+       * For now we don't care about the alignment, that's going to

+       * be sorted out later. */

+      if (!mgr->caps.format_fixed32) {

+         switch (format) {

+            FORMAT_REPLACE(R32_FIXED,           R32_FLOAT);

+            FORMAT_REPLACE(R32G32_FIXED,        R32G32_FLOAT);

+            FORMAT_REPLACE(R32G32B32_FIXED,     R32G32B32_FLOAT);

+            FORMAT_REPLACE(R32G32B32A32_FIXED,  R32G32B32A32_FLOAT);

+            default:;

+         }

+      }

+      if (!mgr->caps.format_float16) {

+         switch (format) {

+            FORMAT_REPLACE(R16_FLOAT,           R32_FLOAT);

+            FORMAT_REPLACE(R16G16_FLOAT,        R32G32_FLOAT);

+            FORMAT_REPLACE(R16G16B16_FLOAT,     R32G32B32_FLOAT);

+            FORMAT_REPLACE(R16G16B16A16_FLOAT,  R32G32B32A32_FLOAT);

+            default:;

+         }

+      }

+      if (!mgr->caps.format_float64) {

+         switch (format) {

+            FORMAT_REPLACE(R64_FLOAT,           R32_FLOAT);

+            FORMAT_REPLACE(R64G64_FLOAT,        R32G32_FLOAT);

+            FORMAT_REPLACE(R64G64B64_FLOAT,     R32G32B32_FLOAT);

+            FORMAT_REPLACE(R64G64B64A64_FLOAT,  R32G32B32A32_FLOAT);

+            default:;

+         }

+      }

+      if (!mgr->caps.format_norm32) {

+         switch (format) {

+            FORMAT_REPLACE(R32_UNORM,           R32_FLOAT);

+            FORMAT_REPLACE(R32G32_UNORM,        R32G32_FLOAT);

+            FORMAT_REPLACE(R32G32B32_UNORM,     R32G32B32_FLOAT);

+            FORMAT_REPLACE(R32G32B32A32_UNORM,  R32G32B32A32_FLOAT);

+            FORMAT_REPLACE(R32_SNORM,           R32_FLOAT);

+            FORMAT_REPLACE(R32G32_SNORM,        R32G32_FLOAT);

+            FORMAT_REPLACE(R32G32B32_SNORM,     R32G32B32_FLOAT);

+            FORMAT_REPLACE(R32G32B32A32_SNORM,  R32G32B32A32_FLOAT);

+            default:;

+         }

+      }

+      if (!mgr->caps.format_scaled32) {

+         switch (format) {

+            FORMAT_REPLACE(R32_USCALED,         R32_FLOAT);

+            FORMAT_REPLACE(R32G32_USCALED,      R32G32_FLOAT);

+            FORMAT_REPLACE(R32G32B32_USCALED,   R32G32B32_FLOAT);

+            FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);

+            FORMAT_REPLACE(R32_SSCALED,         R32_FLOAT);

+            FORMAT_REPLACE(R32G32_SSCALED,      R32G32_FLOAT);

+            FORMAT_REPLACE(R32G32B32_SSCALED,   R32G32B32_FLOAT);

+            FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);

+            default:;

+         }

+      }

+

+      native_attribs[i].src_format = format;

+      ve->native_format[i] = format;

+      ve->native_format_size[i] =

+            util_format_get_blocksize(ve->native_format[i]);

+

+      ve->incompatible_layout =

+            ve->incompatible_layout ||

+            ve->ve[i].src_format != ve->native_format[i] ||

+            (!mgr->caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0);

+   }

+

+   /* Align the formats to the size of DWORD if needed. */

+   if (!mgr->caps.fetch_dword_unaligned) {

+      for (i = 0; i < count; i++) {

+         ve->native_format_size[i] = align(ve->native_format_size[i], 4);

+      }

+   }

+

+   return ve;

+}

+

+void u_vbuf_mgr_bind_vertex_elements(struct u_vbuf_mgr *mgrb,

+                                     void *cso,

+                                     struct u_vbuf_mgr_elements *ve)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+

+   if (!cso) {

+      return;

+   }

+

+   if (!mgr->ve_binding_lock) {

+      mgr->saved_ve = cso;

+      mgr->ve = ve;

+   }

+}

+

+void u_vbuf_mgr_destroy_vertex_elements(struct u_vbuf_mgr *mgr,

+                                        struct u_vbuf_mgr_elements *ve)

+{

+   FREE(ve);

+}

+

+void u_vbuf_mgr_set_vertex_buffers(struct u_vbuf_mgr *mgrb,

+                                   unsigned count,

+                                   const struct pipe_vertex_buffer *bufs)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+   unsigned i;

+

+   mgr->b.max_index = ~0;

+   mgr->any_user_vbs = FALSE;

+   mgr->incompatible_vb_layout = FALSE;

+

+   if (!mgr->caps.fetch_dword_unaligned) {

+      /* Check if the strides and offsets are aligned to the size of DWORD. */

+      for (i = 0; i < count; i++) {

+         if (bufs[i].buffer) {

+            if (bufs[i].stride % 4 != 0 ||

+                bufs[i].buffer_offset % 4 != 0) {

+               mgr->incompatible_vb_layout = TRUE;

+               break;

+            }

+         }

+      }

+   }

+

+   for (i = 0; i < count; i++) {

+      const struct pipe_vertex_buffer *vb = &bufs[i];

+

+      pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer);

+      pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);

+

+      if (u_vbuf_resource(vb->buffer)->user_ptr) {

+         mgr->any_user_vbs = TRUE;

+         continue;

+      }

+

+      pipe_resource_reference(&mgr->b.real_vertex_buffer[i], vb->buffer);

+

+      /* The stride of zero means we will be fetching only the first

+       * vertex, so don't care about max_index. */

+      if (!vb->stride) {

+         continue;

+      }

+

+      /* Update the maximum index. */

+      mgr->b.max_index =

+            MIN2(mgr->b.max_index,

+                 (vb->buffer->width0 - vb->buffer_offset) / vb->stride - 1);

+   }

+

+   for (; i < mgr->b.nr_real_vertex_buffers; i++) {

+      pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);

+      pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);

+   }

+

+   memcpy(mgr->b.vertex_buffer, bufs,

+          sizeof(struct pipe_vertex_buffer) * count);

+

+   mgr->b.nr_vertex_buffers = count;

+   mgr->b.nr_real_vertex_buffers = count;

+}

+

+static void u_vbuf_upload_buffers(struct u_vbuf_mgr_priv *mgr,

+                                  int min_index, int max_index,

+                                  unsigned instance_count,

+                                  boolean *upload_flushed)

+{

+   int i, nr = mgr->ve->count;

+   unsigned count = max_index + 1 - min_index;

+   boolean uploaded[PIPE_MAX_ATTRIBS] = {0};

+

+   for (i = 0; i < nr; i++) {

+      unsigned index = mgr->ve->ve[i].vertex_buffer_index;

+      struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[index];

+

+      if (vb->buffer &&

+          u_vbuf_resource(vb->buffer)->user_ptr &&

+          !uploaded[index]) {

+         unsigned first, size;

+         boolean flushed;

+         unsigned instance_div = mgr->ve->ve[i].instance_divisor;

+

+         if (instance_div) {

+            first = 0;

+            size = vb->stride *

+                   ((instance_count + instance_div - 1) / instance_div);

+         } else if (vb->stride) {

+            first = vb->stride * min_index;

+            size = vb->stride * count;

+         } else {

+            first = 0;

+            size = mgr->ve->native_format_size[i];

+         }

+

+         u_upload_data(mgr->b.uploader, first, size,

+                       u_vbuf_resource(vb->buffer)->user_ptr + first,

+                       &vb->buffer_offset,

+                       &mgr->b.real_vertex_buffer[index],

+                       &flushed);

+

+         vb->buffer_offset -= first;

+

+         uploaded[index] = TRUE;

+         *upload_flushed = *upload_flushed || flushed;

+      } else {

+         assert(mgr->b.real_vertex_buffer[index]);

+      }

+   }

+}

+

+void u_vbuf_mgr_draw_begin(struct u_vbuf_mgr *mgrb,

+                           const struct pipe_draw_info *info,

+                           boolean *buffers_updated,

+                           boolean *uploader_flushed)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+   boolean bufs_updated = FALSE, upload_flushed = FALSE;

+   int min_index, max_index;

+

+   min_index = info->min_index - info->index_bias;

+   if (info->max_index == ~0) {

+      max_index = mgr->b.max_index;

+   } else {

+      max_index = MIN2(info->max_index - info->index_bias, mgr->b.max_index);

+   }

+

+   /* Translate vertices with non-native layouts or formats. */

+   if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) {

+      u_vbuf_translate_begin(mgr, min_index, max_index, &upload_flushed);

+

+      if (mgr->fallback_ve) {

+         bufs_updated = TRUE;

+      }

+   }

+

+   /* Upload user buffers. */

+   if (mgr->any_user_vbs) {

+      u_vbuf_upload_buffers(mgr, min_index, max_index, info->instance_count,

+                            &upload_flushed);

+      bufs_updated = TRUE;

+   }

+

+   /* Set the return values. */

+   if (buffers_updated) {

+      *buffers_updated = bufs_updated;

+   }

+   if (uploader_flushed) {

+      *uploader_flushed = upload_flushed;

+   }

+}

+

+void u_vbuf_mgr_draw_end(struct u_vbuf_mgr *mgrb)

+{

+   struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;

+

+   if (mgr->fallback_ve) {

+      u_vbuf_translate_end(mgr);

+   }

+}