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-rw-r--r--src/mesa/drivers/x11/xm_dd.c2
-rw-r--r--src/mesa/main/arrayobj.c17
-rw-r--r--src/mesa/main/attrib.c13
-rw-r--r--src/mesa/main/bufferobj.c51
-rw-r--r--src/mesa/main/draw.c3
-rw-r--r--src/mesa/main/get.c38
-rw-r--r--src/mesa/main/pixel.c3
-rw-r--r--src/mesa/main/pixelstore.c9
-rw-r--r--src/mesa/main/queryobj.c2
-rw-r--r--src/mesa/main/texstate.c3
-rw-r--r--src/mesa/main/transformfeedback.c3
-rw-r--r--src/mesa/main/varray.c4
-rw-r--r--src/mesa/tnl/t_rebase.c4
-rw-r--r--src/mesa/tnl/t_split_copy.c2
-rw-r--r--src/mesa/tnl/t_split_inplace.c2
-rw-r--r--src/mesa/vbo/vbo_primitive_restart.c9
16 files changed, 62 insertions, 103 deletions
diff --git a/src/mesa/drivers/x11/xm_dd.c b/src/mesa/drivers/x11/xm_dd.c
index 790cbccf505..1f8d78cb541 100644
--- a/src/mesa/drivers/x11/xm_dd.c
+++ b/src/mesa/drivers/x11/xm_dd.c
@@ -546,7 +546,7 @@ xmesa_DrawPixels_5R6G5B( struct gl_context *ctx,
XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
}
- if (unpack->BufferObj->Name) {
+ if (unpack->BufferObj) {
ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL);
}
}
diff --git a/src/mesa/main/arrayobj.c b/src/mesa/main/arrayobj.c
index c05627b05b9..cf848bc177e 100644
--- a/src/mesa/main/arrayobj.c
+++ b/src/mesa/main/arrayobj.c
@@ -394,10 +394,7 @@ _mesa_initialize_vao(struct gl_context *ctx,
GLuint name)
{
memcpy(vao, &ctx->Array.DefaultVAOState, sizeof(*vao));
-
vao->Name = name;
- _mesa_reference_buffer_object(ctx, &vao->IndexBufferObj,
- ctx->Shared->NullBufferObj);
}
@@ -1242,14 +1239,16 @@ vertex_array_element_buffer(struct gl_context *ctx, GLuint vaobj, GLuint buffer,
} else {
bufObj = _mesa_lookup_bufferobj(ctx, buffer);
}
- } else {
- bufObj = ctx->Shared->NullBufferObj;
- }
- if (bufObj) {
+ if (!bufObj)
+ return;
+
bufObj->UsageHistory |= USAGE_ELEMENT_ARRAY_BUFFER;
- _mesa_reference_buffer_object(ctx, &vao->IndexBufferObj, bufObj);
+ } else {
+ bufObj = NULL;
}
+
+ _mesa_reference_buffer_object(ctx, &vao->IndexBufferObj, bufObj);
}
@@ -1299,5 +1298,5 @@ _mesa_GetVertexArrayiv(GLuint vaobj, GLenum pname, GLint *param)
return;
}
- param[0] = vao->IndexBufferObj->Name;
+ param[0] = vao->IndexBufferObj ? vao->IndexBufferObj->Name : 0;
}
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index ce6c519737f..f84844ccea2 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -1666,21 +1666,24 @@ restore_array_attrib(struct gl_context *ctx,
_mesa_BindVertexArray(src->VAO->Name);
/* Restore or recreate the buffer objects by the names ... */
- if (is_vao_name_zero || src->ArrayBufferObj->Name == 0 ||
+ if (is_vao_name_zero || !src->ArrayBufferObj ||
_mesa_IsBuffer(src->ArrayBufferObj->Name)) {
/* ... and restore its content */
copy_array_attrib(ctx, dest, src, false);
_mesa_BindBuffer(GL_ARRAY_BUFFER_ARB,
- src->ArrayBufferObj->Name);
+ src->ArrayBufferObj ?
+ src->ArrayBufferObj->Name : 0);
} else {
copy_array_attrib(ctx, dest, src, true);
}
- if (is_vao_name_zero || src->VAO->IndexBufferObj->Name == 0 ||
- _mesa_IsBuffer(src->VAO->IndexBufferObj->Name))
+ if (is_vao_name_zero || !src->VAO->IndexBufferObj ||
+ _mesa_IsBuffer(src->VAO->IndexBufferObj->Name)) {
_mesa_BindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB,
- src->VAO->IndexBufferObj->Name);
+ src->VAO->IndexBufferObj ?
+ src->VAO->IndexBufferObj->Name : 0);
+ }
}
/**
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 9c4630bca12..39a620b22e6 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -869,35 +869,6 @@ _mesa_init_buffer_objects( struct gl_context *ctx )
simple_mtx_init(&DummyBufferObject.MinMaxCacheMutex, mtx_plain);
DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */
- _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer,
- ctx->Shared->NullBufferObj);
- _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->UniformBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->ShaderStorageBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->AtomicBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->DrawIndirectBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->ParameterBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->DispatchIndirectBuffer,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->QueryBuffer,
- ctx->Shared->NullBufferObj);
-
for (i = 0; i < MAX_COMBINED_UNIFORM_BUFFERS; i++) {
_mesa_reference_buffer_object(ctx,
&ctx->UniformBufferBindings[i].BufferObject,
@@ -1012,29 +983,23 @@ bind_buffer_object(struct gl_context *ctx,
/* Get pointer to old buffer object (to be unbound) */
oldBufObj = *bindTarget;
- if (oldBufObj && oldBufObj->Name == buffer && !oldBufObj->DeletePending)
+ if ((oldBufObj && oldBufObj->Name == buffer && !oldBufObj->DeletePending) ||
+ (!oldBufObj && buffer == 0))
return; /* rebinding the same buffer object- no change */
/*
* Get pointer to new buffer object (newBufObj)
*/
- if (buffer == 0) {
- /* The spec says there's not a buffer object named 0, but we use
- * one internally because it simplifies things.
- */
- newBufObj = ctx->Shared->NullBufferObj;
- }
- else {
+ if (buffer != 0) {
/* non-default buffer object */
newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
if (!_mesa_handle_bind_buffer_gen(ctx, buffer,
&newBufObj, "glBindBuffer"))
return;
- }
- /* record usage history */
- if (bindTarget == &ctx->Pack.BufferObj) {
- newBufObj->UsageHistory |= USAGE_PIXEL_PACK_BUFFER;
+ /* record usage history */
+ if (bindTarget == &ctx->Pack.BufferObj)
+ newBufObj->UsageHistory |= USAGE_PIXEL_PACK_BUFFER;
}
/* bind new buffer */
@@ -1050,9 +1015,7 @@ bind_buffer_object(struct gl_context *ctx,
void
_mesa_update_default_objects_buffer_objects(struct gl_context *ctx)
{
- /* Bind the NullBufferObj to remove references to those
- * in the shared context hash table.
- */
+ /* Bind 0 to remove references to those in the shared context hash table. */
bind_buffer_object(ctx, &ctx->Array.ArrayBufferObj, 0);
bind_buffer_object(ctx, &ctx->Array.VAO->IndexBufferObj, 0);
bind_buffer_object(ctx, &ctx->Pack.BufferObj, 0);
diff --git a/src/mesa/main/draw.c b/src/mesa/main/draw.c
index 5bb254e00d2..53946a72b20 100644
--- a/src/mesa/main/draw.c
+++ b/src/mesa/main/draw.c
@@ -917,7 +917,8 @@ _mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
"(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
"base %d\n",
start, end, type, count,
- ctx->Array.VAO->IndexBufferObj->Name, basevertex);
+ ctx->Array.VAO->IndexBufferObj ?
+ ctx->Array.VAO->IndexBufferObj->Name : 0, basevertex);
}
if ((int) start + basevertex < 0 || end + basevertex >= max_element)
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index cbfe9c8b309..f71fd55c814 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1009,14 +1009,16 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
v->value_int = (*buffer_obj) ? (*buffer_obj)->Name : 0;
break;
case GL_ARRAY_BUFFER_BINDING_ARB:
- v->value_int = ctx->Array.ArrayBufferObj->Name;
+ buf = ctx->Array.ArrayBufferObj;
+ v->value_int = buf ? buf->Name : 0;
break;
case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
buf = ctx->Array.VAO->BufferBinding[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj;
v->value_int = buf ? buf->Name : 0;
break;
case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
- v->value_int = ctx->Array.VAO->IndexBufferObj->Name;
+ buf = ctx->Array.VAO->IndexBufferObj;
+ v->value_int = buf ? buf->Name : 0;
break;
/* ARB_vertex_array_bgra */
@@ -1031,20 +1033,21 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
/* ARB_copy_buffer */
case GL_COPY_READ_BUFFER:
- v->value_int = ctx->CopyReadBuffer->Name;
+ v->value_int = ctx->CopyReadBuffer ? ctx->CopyReadBuffer->Name : 0;
break;
case GL_COPY_WRITE_BUFFER:
- v->value_int = ctx->CopyWriteBuffer->Name;
+ v->value_int = ctx->CopyWriteBuffer ? ctx->CopyWriteBuffer->Name : 0;
break;
case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
- v->value_int = ctx->Pack.BufferObj->Name;
+ v->value_int = ctx->Pack.BufferObj ? ctx->Pack.BufferObj->Name : 0;
break;
case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
- v->value_int = ctx->Unpack.BufferObj->Name;
+ v->value_int = ctx->Unpack.BufferObj ? ctx->Unpack.BufferObj->Name : 0;
break;
case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
- v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
+ v->value_int = ctx->TransformFeedback.CurrentBuffer ?
+ ctx->TransformFeedback.CurrentBuffer->Name : 0;
break;
case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
@@ -1120,7 +1123,7 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
/* GL_ARB_texture_buffer_object */
case GL_TEXTURE_BUFFER_ARB:
- v->value_int = ctx->Texture.BufferObject->Name;
+ v->value_int = ctx->Texture.BufferObject ? ctx->Texture.BufferObject->Name : 0;
break;
case GL_TEXTURE_BINDING_BUFFER_ARB:
unit = ctx->Texture.CurrentUnit;
@@ -1150,15 +1153,15 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
break;
/* GL_ARB_uniform_buffer_object */
case GL_UNIFORM_BUFFER_BINDING:
- v->value_int = ctx->UniformBuffer->Name;
+ v->value_int = ctx->UniformBuffer ? ctx->UniformBuffer->Name : 0;
break;
/* GL_ARB_shader_storage_buffer_object */
case GL_SHADER_STORAGE_BUFFER_BINDING:
- v->value_int = ctx->ShaderStorageBuffer->Name;
+ v->value_int = ctx->ShaderStorageBuffer ? ctx->ShaderStorageBuffer->Name : 0;
break;
/* GL_ARB_query_buffer_object */
case GL_QUERY_BUFFER_BINDING:
- v->value_int = ctx->QueryBuffer->Name;
+ v->value_int = ctx->QueryBuffer ? ctx->QueryBuffer->Name : 0;
break;
/* GL_ARB_timer_query */
case GL_TIMESTAMP:
@@ -1179,11 +1182,7 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
break;
/* GL_ARB_shader_atomic_counters */
case GL_ATOMIC_COUNTER_BUFFER_BINDING:
- if (ctx->AtomicBuffer) {
- v->value_int = ctx->AtomicBuffer->Name;
- } else {
- v->value_int = 0;
- }
+ v->value_int = ctx->AtomicBuffer ? ctx->AtomicBuffer->Name : 0;
break;
/* GL 4.3 */
case GL_NUM_SHADING_LANGUAGE_VERSIONS:
@@ -1191,11 +1190,11 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
break;
/* GL_ARB_draw_indirect */
case GL_DRAW_INDIRECT_BUFFER_BINDING:
- v->value_int = ctx->DrawIndirectBuffer->Name;
+ v->value_int = ctx->DrawIndirectBuffer ? ctx->DrawIndirectBuffer->Name: 0;
break;
/* GL_ARB_indirect_parameters */
case GL_PARAMETER_BUFFER_BINDING_ARB:
- v->value_int = ctx->ParameterBuffer->Name;
+ v->value_int = ctx->ParameterBuffer ? ctx->ParameterBuffer->Name : 0;
break;
/* GL_ARB_separate_shader_objects */
case GL_PROGRAM_PIPELINE_BINDING:
@@ -1207,7 +1206,8 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
break;
/* GL_ARB_compute_shader */
case GL_DISPATCH_INDIRECT_BUFFER_BINDING:
- v->value_int = ctx->DispatchIndirectBuffer->Name;
+ v->value_int = ctx->DispatchIndirectBuffer ?
+ ctx->DispatchIndirectBuffer->Name : 0;
break;
/* GL_ARB_multisample */
case GL_SAMPLES:
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c
index b234bacd9b6..f5856a0ea79 100644
--- a/src/mesa/main/pixel.c
+++ b/src/mesa/main/pixel.c
@@ -155,8 +155,7 @@ validate_pbo_access(struct gl_context *ctx,
/* restore */
_mesa_reference_buffer_object(ctx,
- &ctx->DefaultPacking.BufferObj,
- ctx->Shared->NullBufferObj);
+ &ctx->DefaultPacking.BufferObj, NULL);
if (!ok) {
if (_mesa_is_bufferobj(pack->BufferObj)) {
diff --git a/src/mesa/main/pixelstore.c b/src/mesa/main/pixelstore.c
index 6123da92278..a7c3492b604 100644
--- a/src/mesa/main/pixelstore.c
+++ b/src/mesa/main/pixelstore.c
@@ -272,8 +272,7 @@ _mesa_init_pixelstore(struct gl_context *ctx)
ctx->Pack.CompressedBlockHeight = 0;
ctx->Pack.CompressedBlockDepth = 0;
ctx->Pack.CompressedBlockSize = 0;
- _mesa_reference_buffer_object(ctx, &ctx->Pack.BufferObj,
- ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->Pack.BufferObj, NULL);
ctx->Unpack.Alignment = 4;
ctx->Unpack.RowLength = 0;
ctx->Unpack.ImageHeight = 0;
@@ -287,8 +286,7 @@ _mesa_init_pixelstore(struct gl_context *ctx)
ctx->Unpack.CompressedBlockHeight = 0;
ctx->Unpack.CompressedBlockDepth = 0;
ctx->Unpack.CompressedBlockSize = 0;
- _mesa_reference_buffer_object(ctx, &ctx->Unpack.BufferObj,
- ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->Unpack.BufferObj, NULL);
/*
* _mesa_unpack_image() returns image data in this format. When we
@@ -305,8 +303,7 @@ _mesa_init_pixelstore(struct gl_context *ctx)
ctx->DefaultPacking.SwapBytes = GL_FALSE;
ctx->DefaultPacking.LsbFirst = GL_FALSE;
ctx->DefaultPacking.Invert = GL_FALSE;
- _mesa_reference_buffer_object(ctx, &ctx->DefaultPacking.BufferObj,
- ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->DefaultPacking.BufferObj, NULL);
}
diff --git a/src/mesa/main/queryobj.c b/src/mesa/main/queryobj.c
index 032f9e9a437..0bbc5cfb887 100644
--- a/src/mesa/main/queryobj.c
+++ b/src/mesa/main/queryobj.c
@@ -825,7 +825,7 @@ get_query_object(struct gl_context *ctx, const char *func,
return;
}
- if (buf && buf != ctx->Shared->NullBufferObj) {
+ if (buf) {
bool is_64bit = ptype == GL_INT64_ARB ||
ptype == GL_UNSIGNED_INT64_ARB;
if (!_mesa_has_ARB_query_buffer_object(ctx)) {
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 9b64b64ae58..dfcfc4e8015 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -1072,8 +1072,7 @@ _mesa_init_texture(struct gl_context *ctx)
return GL_FALSE;
/* GL_ARB_texture_buffer_object */
- _mesa_reference_buffer_object(ctx, &ctx->Texture.BufferObject,
- ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->Texture.BufferObject, NULL);
ctx->Texture.NumCurrentTexUsed = 0;
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 06719b1ce82..b9cbe5a309b 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -142,8 +142,7 @@ _mesa_init_transform_feedback(struct gl_context *ctx)
ctx->TransformFeedback.Objects = _mesa_NewHashTable();
_mesa_reference_buffer_object(ctx,
- &ctx->TransformFeedback.CurrentBuffer,
- ctx->Shared->NullBufferObj);
+ &ctx->TransformFeedback.CurrentBuffer, NULL);
}
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index ec5e7191761..f516d0008d6 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -901,10 +901,6 @@ update_array(struct gl_context *ctx,
assert((vao->NewArrays | ~vao->Enabled) & VERT_BIT(attrib));
array->Ptr = ptr;
- /* TODO: remove this hack by not using NullBufferObj in callers */
- if (obj == ctx->Shared->NullBufferObj)
- obj = NULL;
-
/* Update the vertex buffer binding */
GLsizei effectiveStride = stride != 0 ?
stride : array->Format._ElementSize;
diff --git a/src/mesa/tnl/t_rebase.c b/src/mesa/tnl/t_rebase.c
index 07e603b0107..e6e5c9f3dfa 100644
--- a/src/mesa/tnl/t_rebase.c
+++ b/src/mesa/tnl/t_rebase.c
@@ -151,7 +151,7 @@ void t_rebase_prims( struct gl_context *ctx,
} else if (ib) {
/* Unfortunately need to adjust each index individually.
*/
- GLboolean map_ib = ib->obj->Name &&
+ GLboolean map_ib = ib->obj &&
!ib->obj->Mappings[MAP_INTERNAL].Pointer;
void *ptr;
@@ -184,7 +184,7 @@ void t_rebase_prims( struct gl_context *ctx,
return;
}
- tmp_ib.obj = ctx->Shared->NullBufferObj;
+ tmp_ib.obj = NULL;
tmp_ib.ptr = tmp_indices;
tmp_ib.count = ib->count;
tmp_ib.index_size_shift = ib->index_size_shift;
diff --git a/src/mesa/tnl/t_split_copy.c b/src/mesa/tnl/t_split_copy.c
index 5b300e93553..9df55c78558 100644
--- a/src/mesa/tnl/t_split_copy.c
+++ b/src/mesa/tnl/t_split_copy.c
@@ -555,7 +555,7 @@ replay_init(struct copy_context *copy)
*/
copy->dstib.count = 0; /* duplicates dstelt_nr */
copy->dstib.index_size_shift = 2;
- copy->dstib.obj = ctx->Shared->NullBufferObj;
+ copy->dstib.obj = NULL;
copy->dstib.ptr = copy->dstelt;
}
diff --git a/src/mesa/tnl/t_split_inplace.c b/src/mesa/tnl/t_split_inplace.c
index 76d3d89094a..817b641e515 100644
--- a/src/mesa/tnl/t_split_inplace.c
+++ b/src/mesa/tnl/t_split_inplace.c
@@ -228,7 +228,7 @@ split_prims(struct split_context *split)
ib.count = count;
ib.index_size_shift = 2;
- ib.obj = split->ctx->Shared->NullBufferObj;
+ ib.obj = NULL;
ib.ptr = elts;
tmpprim = *prim;
diff --git a/src/mesa/vbo/vbo_primitive_restart.c b/src/mesa/vbo/vbo_primitive_restart.c
index 830f658d29c..1349740249f 100644
--- a/src/mesa/vbo/vbo_primitive_restart.c
+++ b/src/mesa/vbo/vbo_primitive_restart.c
@@ -179,8 +179,8 @@ vbo_sw_primitive_restart(struct gl_context *ctx,
GLuint sub_end_index;
GLuint restart_index = _mesa_primitive_restart_index(ctx, 1 << ib->index_size_shift);
struct _mesa_prim temp_prim;
- GLboolean map_ib = ib->obj->Name && !ib->obj->Mappings[MAP_INTERNAL].Pointer;
- void *ptr;
+ GLboolean map_ib = ib->obj && !ib->obj->Mappings[MAP_INTERNAL].Pointer;
+ const void *ptr;
/* If there is an indirect buffer, map it and extract the draw params */
if (indirect) {
@@ -224,7 +224,10 @@ vbo_sw_primitive_restart(struct gl_context *ctx,
ib->obj, MAP_INTERNAL);
}
- ptr = ADD_POINTERS(ib->obj->Mappings[MAP_INTERNAL].Pointer, ib->ptr);
+ if (ib->obj)
+ ptr = ADD_POINTERS(ib->obj->Mappings[MAP_INTERNAL].Pointer, ib->ptr);
+ else
+ ptr = ib->ptr;
sub_prims = find_sub_primitives(ptr, 1 << ib->index_size_shift,
0, ib->count, restart_index,