gallium/util: Break recursion in pipe_resource_reference
[mesa.git] / src / gallium / auxiliary / util / u_inlines.h
index 089adcf3827122e86c2450b1ee6ce7062af5fae5..4fc683a57451ab6b5792c880a2a3f51fe6607db1 100644 (file)
@@ -1,6 +1,6 @@
 /**************************************************************************
  * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -18,7 +18,7 @@
  * 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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE 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 "pipe/p_context.h"
 #include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
 #include "pipe/p_state.h"
 #include "pipe/p_screen.h"
 #include "util/u_debug.h"
+#include "util/u_debug_describe.h"
+#include "util/u_debug_refcnt.h"
 #include "util/u_atomic.h"
 #include "util/u_box.h"
 #include "util/u_math.h"
@@ -48,13 +51,13 @@ extern "C" {
  */
 
 
-static INLINE void
+static inline void
 pipe_reference_init(struct pipe_reference *reference, unsigned count)
 {
    p_atomic_set(&reference->count, count);
 }
 
-static INLINE boolean
+static inline boolean
 pipe_is_referenced(struct pipe_reference *reference)
 {
    return p_atomic_read(&reference->count) != 0;
@@ -66,8 +69,10 @@ pipe_is_referenced(struct pipe_reference *reference)
  * Both 'ptr' and 'reference' may be NULL.
  * \return TRUE if the object's refcount hits zero and should be destroyed.
  */
-static INLINE boolean
-pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
+static inline boolean
+pipe_reference_described(struct pipe_reference *ptr, 
+                         struct pipe_reference *reference, 
+                         debug_reference_descriptor get_desc)
 {
    boolean destroy = FALSE;
 
@@ -76,6 +81,7 @@ pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
       if (reference) {
          assert(pipe_is_referenced(reference));
          p_atomic_inc(&reference->count);
+         debug_reference(reference, get_desc, 1);
       }
 
       if (ptr) {
@@ -83,75 +89,180 @@ pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
          if (p_atomic_dec_zero(&ptr->count)) {
             destroy = TRUE;
          }
+         debug_reference(ptr, get_desc, -1);
       }
    }
 
    return destroy;
 }
 
+static inline boolean
+pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
+{
+   return pipe_reference_described(ptr, reference, 
+                                   (debug_reference_descriptor)debug_describe_reference);
+}
 
-static INLINE void
+static inline void
 pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
 {
    struct pipe_surface *old_surf = *ptr;
 
-   if (pipe_reference(&(*ptr)->reference, &surf->reference))
-      old_surf->texture->screen->tex_surface_destroy(old_surf);
+   if (pipe_reference_described(&(*ptr)->reference, &surf->reference, 
+                                (debug_reference_descriptor)debug_describe_surface))
+      old_surf->context->surface_destroy(old_surf->context, old_surf);
    *ptr = surf;
 }
 
+/**
+ * Similar to pipe_surface_reference() but always set the pointer to NULL
+ * and pass in an explicit context.  The explicit context avoids the problem
+ * of using a deleted context's surface_destroy() method when freeing a surface
+ * that's shared by multiple contexts.
+ */
+static inline void
+pipe_surface_release(struct pipe_context *pipe, struct pipe_surface **ptr)
+{
+   if (pipe_reference_described(&(*ptr)->reference, NULL,
+                                (debug_reference_descriptor)debug_describe_surface))
+      pipe->surface_destroy(pipe, *ptr);
+   *ptr = NULL;
+}
+
 
-static INLINE void
+static inline void
 pipe_resource_reference(struct pipe_resource **ptr, struct pipe_resource *tex)
 {
    struct pipe_resource *old_tex = *ptr;
 
-   if (pipe_reference(&(*ptr)->reference, &tex->reference))
-      old_tex->screen->resource_destroy(old_tex->screen, old_tex);
+   if (pipe_reference_described(&(*ptr)->reference, &tex->reference, 
+                                (debug_reference_descriptor)debug_describe_resource)) {
+      /* Avoid recursion, which would prevent inlining this function */
+      do {
+         struct pipe_resource *next = old_tex->next;
+
+         old_tex->screen->resource_destroy(old_tex->screen, old_tex);
+         old_tex = next;
+      } while (pipe_reference_described(&old_tex->reference, NULL,
+                                        (debug_reference_descriptor)debug_describe_resource));
+   }
    *ptr = tex;
 }
 
-
-static INLINE void
+static inline void
 pipe_sampler_view_reference(struct pipe_sampler_view **ptr, struct pipe_sampler_view *view)
 {
    struct pipe_sampler_view *old_view = *ptr;
 
-   if (pipe_reference(&(*ptr)->reference, &view->reference))
+   if (pipe_reference_described(&(*ptr)->reference, &view->reference,
+                                (debug_reference_descriptor)debug_describe_sampler_view))
       old_view->context->sampler_view_destroy(old_view->context, old_view);
    *ptr = view;
 }
 
-static INLINE void
-pipe_surface_reset(struct pipe_surface* ps, struct pipe_resource *pt,
-               unsigned face, unsigned level, unsigned zslice, unsigned flags)
+/**
+ * Similar to pipe_sampler_view_reference() but always set the pointer to
+ * NULL and pass in an explicit context.  Passing an explicit context is a
+ * work-around for fixing a dangling context pointer problem when textures
+ * are shared by multiple contexts.  XXX fix this someday.
+ */
+static inline void
+pipe_sampler_view_release(struct pipe_context *ctx,
+                          struct pipe_sampler_view **ptr)
+{
+   struct pipe_sampler_view *old_view = *ptr;
+   if (*ptr && (*ptr)->context != ctx) {
+      debug_printf_once(("context mis-match in pipe_sampler_view_release()\n"));
+   }
+   if (pipe_reference_described(&(*ptr)->reference, NULL,
+                    (debug_reference_descriptor)debug_describe_sampler_view)) {
+      ctx->sampler_view_destroy(ctx, old_view);
+   }
+   *ptr = NULL;
+}
+
+static inline void
+pipe_so_target_reference(struct pipe_stream_output_target **ptr,
+                         struct pipe_stream_output_target *target)
+{
+   struct pipe_stream_output_target *old = *ptr;
+
+   if (pipe_reference_described(&(*ptr)->reference, &target->reference,
+                     (debug_reference_descriptor)debug_describe_so_target))
+      old->context->stream_output_target_destroy(old->context, old);
+   *ptr = target;
+}
+
+static inline void
+pipe_vertex_buffer_unreference(struct pipe_vertex_buffer *dst)
+{
+   if (dst->is_user_buffer)
+      dst->buffer.user = NULL;
+   else
+      pipe_resource_reference(&dst->buffer.resource, NULL);
+}
+
+static inline void
+pipe_vertex_buffer_reference(struct pipe_vertex_buffer *dst,
+                             const struct pipe_vertex_buffer *src)
+{
+   pipe_vertex_buffer_unreference(dst);
+   if (!src->is_user_buffer)
+      pipe_resource_reference(&dst->buffer.resource, src->buffer.resource);
+   memcpy(dst, src, sizeof(*src));
+}
+
+static inline void
+pipe_surface_reset(struct pipe_context *ctx, struct pipe_surface* ps,
+                   struct pipe_resource *pt, unsigned level, unsigned layer)
 {
    pipe_resource_reference(&ps->texture, pt);
    ps->format = pt->format;
    ps->width = u_minify(pt->width0, level);
    ps->height = u_minify(pt->height0, level);
-   ps->usage = flags;
-   ps->face = face;
-   ps->level = level;
-   ps->zslice = zslice;
+   ps->u.tex.level = level;
+   ps->u.tex.first_layer = ps->u.tex.last_layer = layer;
+   ps->context = ctx;
 }
 
-static INLINE void
-pipe_surface_init(struct pipe_surface* ps, struct pipe_resource *pt,
-                unsigned face, unsigned level, unsigned zslice, unsigned flags)
+static inline void
+pipe_surface_init(struct pipe_context *ctx, struct pipe_surface* ps,
+                  struct pipe_resource *pt, unsigned level, unsigned layer)
 {
    ps->texture = 0;
    pipe_reference_init(&ps->reference, 1);
-   pipe_surface_reset(ps, pt, face, level, zslice, flags);
+   pipe_surface_reset(ctx, ps, pt, level, layer);
+}
+
+/* Return true if the surfaces are equal. */
+static inline boolean
+pipe_surface_equal(struct pipe_surface *s1, struct pipe_surface *s2)
+{
+   return s1->texture == s2->texture &&
+          s1->format == s2->format &&
+          (s1->texture->target != PIPE_BUFFER ||
+           (s1->u.buf.first_element == s2->u.buf.first_element &&
+            s1->u.buf.last_element == s2->u.buf.last_element)) &&
+          (s1->texture->target == PIPE_BUFFER ||
+           (s1->u.tex.level == s2->u.tex.level &&
+            s1->u.tex.first_layer == s2->u.tex.first_layer &&
+            s1->u.tex.last_layer == s2->u.tex.last_layer));
 }
 
 /*
  * Convenience wrappers for screen buffer functions.
  */
 
-static INLINE struct pipe_resource *
+
+/**
+ * Create a new resource.
+ * \param bind  bitmask of PIPE_BIND_x flags
+ * \param usage  a PIPE_USAGE_x value
+ */
+static inline struct pipe_resource *
 pipe_buffer_create( struct pipe_screen *screen,
                    unsigned bind,
+                   enum pipe_resource_usage usage,
                    unsigned size )
 {
    struct pipe_resource buffer;
@@ -159,28 +270,29 @@ pipe_buffer_create( struct pipe_screen *screen,
    buffer.target = PIPE_BUFFER;
    buffer.format = PIPE_FORMAT_R8_UNORM; /* want TYPELESS or similar */
    buffer.bind = bind;
-   buffer._usage = PIPE_USAGE_DEFAULT;
+   buffer.usage = usage;
    buffer.flags = 0;
    buffer.width0 = size;
    buffer.height0 = 1;
    buffer.depth0 = 1;
+   buffer.array_size = 1;
    return screen->resource_create(screen, &buffer);
 }
 
 
-static INLINE struct pipe_resource *
-pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size,
-                        unsigned usage )
-{
-   return screen->user_buffer_create(screen, ptr, size, usage);
-}
-
-static INLINE void *
+/**
+ * Map a range of a resource.
+ * \param offset  start of region, in bytes 
+ * \param length  size of region, in bytes 
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ * \param transfer  returns a transfer object
+ */
+static inline void *
 pipe_buffer_map_range(struct pipe_context *pipe,
                      struct pipe_resource *buffer,
                      unsigned offset,
                      unsigned length,
-                     unsigned usage,
+                     unsigned access,
                      struct pipe_transfer **transfer)
 {
    struct pipe_box box;
@@ -189,55 +301,43 @@ pipe_buffer_map_range(struct pipe_context *pipe,
    assert(offset < buffer->width0);
    assert(offset + length <= buffer->width0);
    assert(length);
-   
-   u_box_1d(offset, length, &box);
 
-   *transfer = pipe->get_transfer( pipe,
-                                  buffer,
-                                  u_subresource(0, 0),
-                                  usage,
-                                  &box);
-   
-   if (*transfer == NULL)
-      return NULL;
+   u_box_1d(offset, length, &box);
 
-   map = pipe->transfer_map( pipe, *transfer );
-   if (map == NULL) {
-      pipe->transfer_destroy( pipe, *transfer );
+   map = pipe->transfer_map(pipe, buffer, 0, access, &box, transfer);
+   if (!map) {
       return NULL;
    }
 
-   /* Match old screen->buffer_map_range() behaviour, return pointer
-    * to where the beginning of the buffer would be:
-    */
-   return (void *)((char *)map - offset);
+   return map;
 }
 
 
-static INLINE void *
+/**
+ * Map whole resource.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ * \param transfer  returns a transfer object
+ */
+static inline void *
 pipe_buffer_map(struct pipe_context *pipe,
                 struct pipe_resource *buffer,
-                unsigned usage,
-               struct pipe_transfer **transfer)
+                unsigned access,
+                struct pipe_transfer **transfer)
 {
-   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, usage, transfer);
+   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, access, transfer);
 }
 
 
-static INLINE void
+static inline void
 pipe_buffer_unmap(struct pipe_context *pipe,
-                  struct pipe_resource *buf,
-                 struct pipe_transfer *transfer)
+                  struct pipe_transfer *transfer)
 {
-   if (transfer) {
-      pipe->transfer_unmap(pipe, transfer);
-      pipe->transfer_destroy(pipe, transfer);
-   }
+   pipe->transfer_unmap(pipe, transfer);
 }
 
-static INLINE void
+static inline void
 pipe_buffer_flush_mapped_range(struct pipe_context *pipe,
-                              struct pipe_transfer *transfer,
+                               struct pipe_transfer *transfer,
                                unsigned offset,
                                unsigned length)
 {
@@ -245,39 +345,29 @@ pipe_buffer_flush_mapped_range(struct pipe_context *pipe,
    int transfer_offset;
 
    assert(length);
-   assert(transfer->box.x <= offset);
-   assert(offset + length <= transfer->box.x + transfer->box.width);
+   assert(transfer->box.x <= (int) offset);
+   assert((int) (offset + length) <= transfer->box.x + transfer->box.width);
 
    /* Match old screen->buffer_flush_mapped_range() behaviour, where
     * offset parameter is relative to the start of the buffer, not the
     * mapped range.
     */
    transfer_offset = offset - transfer->box.x;
-   
+
    u_box_1d(transfer_offset, length, &box);
 
    pipe->transfer_flush_region(pipe, transfer, &box);
 }
 
-static INLINE void
+static inline void
 pipe_buffer_write(struct pipe_context *pipe,
                   struct pipe_resource *buf,
                   unsigned offset,
-                 unsigned size,
+                  unsigned size,
                   const void *data)
 {
-   struct pipe_box box;
-
-   u_box_1d(offset, size, &box);
-
-   pipe->transfer_inline_write( pipe,
-                               buf,
-                               u_subresource(0,0),
-                               PIPE_TRANSFER_WRITE,
-                               &box,
-                               data,
-                               size,
-                               0);
+   /* Don't set any other usage bits. Drivers should derive them. */
+   pipe->buffer_subdata(pipe, buf, PIPE_TRANSFER_WRITE, offset, size, data);
 }
 
 /**
@@ -286,31 +376,42 @@ pipe_buffer_write(struct pipe_context *pipe,
  * We can avoid GPU/CPU synchronization when writing range that has never
  * been written before.
  */
-static INLINE void
+static inline void
 pipe_buffer_write_nooverlap(struct pipe_context *pipe,
                             struct pipe_resource *buf,
                             unsigned offset, unsigned size,
                             const void *data)
 {
-   struct pipe_box box;
+   pipe->buffer_subdata(pipe, buf,
+                        (PIPE_TRANSFER_WRITE |
+                         PIPE_TRANSFER_UNSYNCHRONIZED),
+                        offset, size, data);
+}
 
-   u_box_1d(offset, size, &box);
 
-   pipe->transfer_inline_write(pipe, 
-                              buf,
-                              u_subresource(0,0),
-                              (PIPE_TRANSFER_WRITE |
-                               PIPE_TRANSFER_NOOVERWRITE),
-                              &box,
-                              data,
-                              0, 0);
+/**
+ * Create a new resource and immediately put data into it
+ * \param bind  bitmask of PIPE_BIND_x flags
+ * \param usage  bitmask of PIPE_USAGE_x flags
+ */
+static inline struct pipe_resource *
+pipe_buffer_create_with_data(struct pipe_context *pipe,
+                             unsigned bind,
+                             enum pipe_resource_usage usage,
+                             unsigned size,
+                             const void *ptr)
+{
+   struct pipe_resource *res = pipe_buffer_create(pipe->screen,
+                                                  bind, usage, size);
+   pipe_buffer_write_nooverlap(pipe, res, 0, size, ptr);
+   return res;
 }
 
-static INLINE void
+static inline void
 pipe_buffer_read(struct pipe_context *pipe,
                  struct pipe_resource *buf,
                  unsigned offset,
-                unsigned size,
+                 unsigned size,
                  void *data)
 {
    struct pipe_transfer *src_transfer;
@@ -321,53 +422,255 @@ pipe_buffer_read(struct pipe_context *pipe,
                                         offset, size,
                                         PIPE_TRANSFER_READ,
                                         &src_transfer);
+   if (!map)
+      return;
 
-   if (map)
-      memcpy(data, map + offset, size);
-
-   pipe_buffer_unmap(pipe, buf, src_transfer);
+   memcpy(data, map, size);
+   pipe_buffer_unmap(pipe, src_transfer);
 }
 
-static INLINE struct pipe_transfer *
-pipe_get_transfer( struct pipe_context *context,
-                      struct pipe_resource *resource,
-                      unsigned face, unsigned level,
-                      unsigned zslice,
-                      enum pipe_transfer_usage usage,
-                      unsigned x, unsigned y,
-                      unsigned w, unsigned h)
+
+/**
+ * Map a resource for reading/writing.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ */
+static inline void *
+pipe_transfer_map(struct pipe_context *context,
+                  struct pipe_resource *resource,
+                  unsigned level, unsigned layer,
+                  unsigned access,
+                  unsigned x, unsigned y,
+                  unsigned w, unsigned h,
+                  struct pipe_transfer **transfer)
 {
    struct pipe_box box;
-   u_box_2d_zslice( x, y, zslice, w, h, &box );
-   return context->get_transfer( context,
-                                resource,
-                                u_subresource(face, level),
-                                usage,
-                                &box );
+   u_box_2d_zslice(x, y, layer, w, h, &box);
+   return context->transfer_map(context,
+                                resource,
+                                level,
+                                access,
+                                &box, transfer);
 }
 
-static INLINE void *
-pipe_transfer_map( struct pipe_context *context,
-                   struct pipe_transfer *transfer )
+
+/**
+ * Map a 3D (texture) resource for reading/writing.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ */
+static inline void *
+pipe_transfer_map_3d(struct pipe_context *context,
+                     struct pipe_resource *resource,
+                     unsigned level,
+                     unsigned access,
+                     unsigned x, unsigned y, unsigned z,
+                     unsigned w, unsigned h, unsigned d,
+                     struct pipe_transfer **transfer)
 {
-   return context->transfer_map( context, transfer );
+   struct pipe_box box;
+   u_box_3d(x, y, z, w, h, d, &box);
+   return context->transfer_map(context,
+                                resource,
+                                level,
+                                access,
+                                &box, transfer);
 }
 
-static INLINE void
+static inline void
 pipe_transfer_unmap( struct pipe_context *context,
                      struct pipe_transfer *transfer )
 {
    context->transfer_unmap( context, transfer );
 }
 
+static inline void
+pipe_set_constant_buffer(struct pipe_context *pipe,
+                         enum pipe_shader_type shader, uint index,
+                         struct pipe_resource *buf)
+{
+   if (buf) {
+      struct pipe_constant_buffer cb;
+      cb.buffer = buf;
+      cb.buffer_offset = 0;
+      cb.buffer_size = buf->width0;
+      cb.user_buffer = NULL;
+      pipe->set_constant_buffer(pipe, shader, index, &cb);
+   } else {
+      pipe->set_constant_buffer(pipe, shader, index, NULL);
+   }
+}
+
+
+/**
+ * Get the polygon offset enable/disable flag for the given polygon fill mode.
+ * \param fill_mode  one of PIPE_POLYGON_MODE_POINT/LINE/FILL
+ */
+static inline boolean
+util_get_offset(const struct pipe_rasterizer_state *templ,
+                unsigned fill_mode)
+{
+   switch(fill_mode) {
+   case PIPE_POLYGON_MODE_POINT:
+      return templ->offset_point;
+   case PIPE_POLYGON_MODE_LINE:
+      return templ->offset_line;
+   case PIPE_POLYGON_MODE_FILL:
+      return templ->offset_tri;
+   default:
+      assert(0);
+      return FALSE;
+   }
+}
+
+static inline float
+util_get_min_point_size(const struct pipe_rasterizer_state *state)
+{
+   /* The point size should be clamped to this value at the rasterizer stage.
+    */
+   return !state->point_quad_rasterization &&
+          !state->point_smooth &&
+          !state->multisample ? 1.0f : 0.0f;
+}
 
-static INLINE void
-pipe_transfer_destroy( struct pipe_context *context, 
-                      struct pipe_transfer *transfer )
+static inline void
+util_query_clear_result(union pipe_query_result *result, unsigned type)
 {
-   context->transfer_destroy(context, transfer);
+   switch (type) {
+   case PIPE_QUERY_OCCLUSION_PREDICATE:
+   case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
+   case PIPE_QUERY_GPU_FINISHED:
+      result->b = FALSE;
+      break;
+   case PIPE_QUERY_OCCLUSION_COUNTER:
+   case PIPE_QUERY_TIMESTAMP:
+   case PIPE_QUERY_TIME_ELAPSED:
+   case PIPE_QUERY_PRIMITIVES_GENERATED:
+   case PIPE_QUERY_PRIMITIVES_EMITTED:
+      result->u64 = 0;
+      break;
+   case PIPE_QUERY_SO_STATISTICS:
+      memset(&result->so_statistics, 0, sizeof(result->so_statistics));
+      break;
+   case PIPE_QUERY_TIMESTAMP_DISJOINT:
+      memset(&result->timestamp_disjoint, 0, sizeof(result->timestamp_disjoint));
+      break;
+   case PIPE_QUERY_PIPELINE_STATISTICS:
+      memset(&result->pipeline_statistics, 0, sizeof(result->pipeline_statistics));
+      break;
+   default:
+      memset(result, 0, sizeof(*result));
+   }
 }
 
+/** Convert PIPE_TEXTURE_x to TGSI_TEXTURE_x */
+static inline unsigned
+util_pipe_tex_to_tgsi_tex(enum pipe_texture_target pipe_tex_target,
+                          unsigned nr_samples)
+{
+   switch (pipe_tex_target) {
+   case PIPE_BUFFER:
+      return TGSI_TEXTURE_BUFFER;
+
+   case PIPE_TEXTURE_1D:
+      assert(nr_samples <= 1);
+      return TGSI_TEXTURE_1D;
+
+   case PIPE_TEXTURE_2D:
+      return nr_samples > 1 ? TGSI_TEXTURE_2D_MSAA : TGSI_TEXTURE_2D;
+
+   case PIPE_TEXTURE_RECT:
+      assert(nr_samples <= 1);
+      return TGSI_TEXTURE_RECT;
+
+   case PIPE_TEXTURE_3D:
+      assert(nr_samples <= 1);
+      return TGSI_TEXTURE_3D;
+
+   case PIPE_TEXTURE_CUBE:
+      assert(nr_samples <= 1);
+      return TGSI_TEXTURE_CUBE;
+
+   case PIPE_TEXTURE_1D_ARRAY:
+      assert(nr_samples <= 1);
+      return TGSI_TEXTURE_1D_ARRAY;
+
+   case PIPE_TEXTURE_2D_ARRAY:
+      return nr_samples > 1 ? TGSI_TEXTURE_2D_ARRAY_MSAA :
+                              TGSI_TEXTURE_2D_ARRAY;
+
+   case PIPE_TEXTURE_CUBE_ARRAY:
+      return TGSI_TEXTURE_CUBE_ARRAY;
+
+   default:
+      assert(0 && "unexpected texture target");
+      return TGSI_TEXTURE_UNKNOWN;
+   }
+}
+
+
+static inline void
+util_copy_constant_buffer(struct pipe_constant_buffer *dst,
+                          const struct pipe_constant_buffer *src)
+{
+   if (src) {
+      pipe_resource_reference(&dst->buffer, src->buffer);
+      dst->buffer_offset = src->buffer_offset;
+      dst->buffer_size = src->buffer_size;
+      dst->user_buffer = src->user_buffer;
+   }
+   else {
+      pipe_resource_reference(&dst->buffer, NULL);
+      dst->buffer_offset = 0;
+      dst->buffer_size = 0;
+      dst->user_buffer = NULL;
+   }
+}
+
+static inline void
+util_copy_image_view(struct pipe_image_view *dst,
+                     const struct pipe_image_view *src)
+{
+   if (src) {
+      pipe_resource_reference(&dst->resource, src->resource);
+      dst->format = src->format;
+      dst->access = src->access;
+      dst->u = src->u;
+   } else {
+      pipe_resource_reference(&dst->resource, NULL);
+      dst->format = PIPE_FORMAT_NONE;
+      dst->access = 0;
+      memset(&dst->u, 0, sizeof(dst->u));
+   }
+}
+
+static inline unsigned
+util_max_layer(const struct pipe_resource *r, unsigned level)
+{
+   switch (r->target) {
+   case PIPE_TEXTURE_3D:
+      return u_minify(r->depth0, level) - 1;
+   case PIPE_TEXTURE_CUBE:
+      assert(r->array_size == 6);
+      /* fall-through */
+   case PIPE_TEXTURE_1D_ARRAY:
+   case PIPE_TEXTURE_2D_ARRAY:
+   case PIPE_TEXTURE_CUBE_ARRAY:
+      return r->array_size - 1;
+   default:
+      return 0;
+   }
+}
+
+static inline bool
+util_texrange_covers_whole_level(const struct pipe_resource *tex,
+                                 unsigned level, unsigned x, unsigned y,
+                                 unsigned z, unsigned width,
+                                 unsigned height, unsigned depth)
+{
+   return x == 0 && y == 0 && z == 0 &&
+          width == u_minify(tex->width0, level) &&
+          height == u_minify(tex->height0, level) &&
+          depth == util_max_layer(tex, level) + 1;
+}
 
 #ifdef __cplusplus
 }