/************************************************************************** * * Copyright 2006 VMware, Inc. * 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 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. * **************************************************************************/ /* * Authors: * Keith Whitwell * Michel Dänzer */ #include #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "util/u_inlines.h" #include "util/u_cpu_detect.h" #include "util/u_format.h" #include "util/u_math.h" #include "util/u_memory.h" #include "util/u_simple_list.h" #include "util/u_transfer.h" #include "lp_context.h" #include "lp_flush.h" #include "lp_screen.h" #include "lp_texture.h" #include "lp_setup.h" #include "lp_state.h" #include "lp_rast.h" #include "state_tracker/sw_winsys.h" #ifdef DEBUG static struct llvmpipe_resource resource_list; #endif static unsigned id_counter = 0; /** * Conventional allocation path for non-display textures: * Just compute row strides here. Storage is allocated on demand later. */ static boolean llvmpipe_texture_layout(struct llvmpipe_screen *screen, struct llvmpipe_resource *lpr) { struct pipe_resource *pt = &lpr->base; unsigned level; unsigned width = pt->width0; unsigned height = pt->height0; unsigned depth = pt->depth0; uint64_t total_size = 0; unsigned layers = pt->array_size; assert(LP_MAX_TEXTURE_2D_LEVELS <= LP_MAX_TEXTURE_LEVELS); assert(LP_MAX_TEXTURE_3D_LEVELS <= LP_MAX_TEXTURE_LEVELS); for (level = 0; level <= pt->last_level; level++) { /* Row stride and image stride */ { unsigned align_x, align_y, nblocksx, nblocksy, block_size; /* For non-compressed formats we need 4x4 pixel alignment * so we can read/write LP_RASTER_BLOCK_SIZE when rendering to them. * We also want cache line size in x direction, * otherwise same cache line could end up in multiple threads. * For explicit 1d resources however we reduce this to 4x1 and * handle specially in render output code (as we need to do special * handling there for buffers in any case). */ if (util_format_is_compressed(pt->format)) align_x = align_y = 1; else { align_x = LP_RASTER_BLOCK_SIZE; if (llvmpipe_resource_is_1d(&lpr->base)) align_y = 1; else align_y = LP_RASTER_BLOCK_SIZE; } nblocksx = util_format_get_nblocksx(pt->format, align(width, align_x)); nblocksy = util_format_get_nblocksy(pt->format, align(height, align_y)); block_size = util_format_get_blocksize(pt->format); if (util_format_is_compressed(pt->format)) lpr->row_stride[level] = nblocksx * block_size; else lpr->row_stride[level] = align(nblocksx * block_size, util_cpu_caps.cacheline); /* if row_stride * height > LP_MAX_TEXTURE_SIZE */ if (lpr->row_stride[level] > LP_MAX_TEXTURE_SIZE / nblocksy) { /* image too large */ goto fail; } lpr->img_stride[level] = lpr->row_stride[level] * nblocksy; } /* Number of 3D image slices, cube faces or texture array layers */ { unsigned num_slices; if (lpr->base.target == PIPE_TEXTURE_CUBE) num_slices = 6; else if (lpr->base.target == PIPE_TEXTURE_3D) num_slices = depth; else if (lpr->base.target == PIPE_TEXTURE_1D_ARRAY || lpr->base.target == PIPE_TEXTURE_2D_ARRAY) num_slices = layers; else num_slices = 1; lpr->num_slices_faces[level] = num_slices; } /* if img_stride * num_slices_faces > LP_MAX_TEXTURE_SIZE */ if (lpr->img_stride[level] > LP_MAX_TEXTURE_SIZE / lpr->num_slices_faces[level]) { /* volume too large */ goto fail; } total_size += (uint64_t) lpr->num_slices_faces[level] * (uint64_t) lpr->img_stride[level]; if (total_size > LP_MAX_TEXTURE_SIZE) { goto fail; } /* Compute size of next mipmap level */ width = u_minify(width, 1); height = u_minify(height, 1); depth = u_minify(depth, 1); } return TRUE; fail: return FALSE; } /** * Check the size of the texture specified by 'res'. * \return TRUE if OK, FALSE if too large. */ static boolean llvmpipe_can_create_resource(struct pipe_screen *screen, const struct pipe_resource *res) { struct llvmpipe_resource lpr; memset(&lpr, 0, sizeof(lpr)); lpr.base = *res; return llvmpipe_texture_layout(llvmpipe_screen(screen), &lpr); } static boolean llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen, struct llvmpipe_resource *lpr) { struct sw_winsys *winsys = screen->winsys; /* Round up the surface size to a multiple of the tile size to * avoid tile clipping. */ const unsigned width = MAX2(1, align(lpr->base.width0, TILE_SIZE)); const unsigned height = MAX2(1, align(lpr->base.height0, TILE_SIZE)); lpr->num_slices_faces[0] = 1; lpr->img_stride[0] = 0; lpr->dt = winsys->displaytarget_create(winsys, lpr->base.bind, lpr->base.format, width, height, 16, &lpr->row_stride[0] ); if (lpr->dt == NULL) return FALSE; { void *map = winsys->displaytarget_map(winsys, lpr->dt, PIPE_TRANSFER_WRITE); if (map) memset(map, 0, height * lpr->row_stride[0]); winsys->displaytarget_unmap(winsys, lpr->dt); } return TRUE; } static struct pipe_resource * llvmpipe_resource_create(struct pipe_screen *_screen, const struct pipe_resource *templat) { struct llvmpipe_screen *screen = llvmpipe_screen(_screen); struct llvmpipe_resource *lpr = CALLOC_STRUCT(llvmpipe_resource); if (!lpr) return NULL; lpr->base = *templat; pipe_reference_init(&lpr->base.reference, 1); lpr->base.screen = &screen->base; /* assert(lpr->base.bind); */ if (llvmpipe_resource_is_texture(&lpr->base)) { if (lpr->base.bind & (PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT | PIPE_BIND_SHARED)) { /* displayable surface */ if (!llvmpipe_displaytarget_layout(screen, lpr)) goto fail; } else { /* texture map */ if (!llvmpipe_texture_layout(screen, lpr)) goto fail; } } else { /* other data (vertex buffer, const buffer, etc) */ const uint bytes = templat->width0; assert(util_format_get_blocksize(templat->format) == 1); assert(templat->height0 == 1); assert(templat->depth0 == 1); assert(templat->last_level == 0); /* * Reserve some extra storage since if we'd render to a buffer we * read/write always LP_RASTER_BLOCK_SIZE pixels, but the element * offset doesn't need to be aligned to LP_RASTER_BLOCK_SIZE. */ lpr->data = align_malloc(bytes + (LP_RASTER_BLOCK_SIZE - 1) * 4 * sizeof(float), 16); /* * buffers don't really have stride but it's probably safer * (for code doing same calculations for buffers and textures) * to put something sane in there. */ lpr->row_stride[0] = bytes; if (!lpr->data) goto fail; memset(lpr->data, 0, bytes); } lpr->id = id_counter++; #ifdef DEBUG insert_at_tail(&resource_list, lpr); #endif return &lpr->base; fail: FREE(lpr); return NULL; } static void llvmpipe_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt) { struct llvmpipe_screen *screen = llvmpipe_screen(pscreen); struct llvmpipe_resource *lpr = llvmpipe_resource(pt); if (lpr->dt) { /* display target */ struct sw_winsys *winsys = screen->winsys; winsys->displaytarget_destroy(winsys, lpr->dt); } else if (llvmpipe_resource_is_texture(pt)) { /* free linear image data */ if (lpr->linear_img.data) { align_free(lpr->linear_img.data); lpr->linear_img.data = NULL; } } else if (!lpr->userBuffer) { assert(lpr->data); align_free(lpr->data); } #ifdef DEBUG if (lpr->next) remove_from_list(lpr); #endif FREE(lpr); } /** * Map a resource for read/write. */ void * llvmpipe_resource_map(struct pipe_resource *resource, unsigned level, unsigned layer, enum lp_texture_usage tex_usage) { struct llvmpipe_resource *lpr = llvmpipe_resource(resource); uint8_t *map; assert(level < LP_MAX_TEXTURE_LEVELS); assert(layer < (u_minify(resource->depth0, level) + resource->array_size - 1)); assert(tex_usage == LP_TEX_USAGE_READ || tex_usage == LP_TEX_USAGE_READ_WRITE || tex_usage == LP_TEX_USAGE_WRITE_ALL); if (lpr->dt) { /* display target */ struct llvmpipe_screen *screen = llvmpipe_screen(resource->screen); struct sw_winsys *winsys = screen->winsys; unsigned dt_usage; if (tex_usage == LP_TEX_USAGE_READ) { dt_usage = PIPE_TRANSFER_READ; } else { dt_usage = PIPE_TRANSFER_READ_WRITE; } assert(level == 0); assert(layer == 0); /* FIXME: keep map count? */ map = winsys->displaytarget_map(winsys, lpr->dt, dt_usage); /* install this linear image in texture data structure */ lpr->linear_img.data = map; return map; } else if (llvmpipe_resource_is_texture(resource)) { map = llvmpipe_get_texture_image(lpr, layer, level, tex_usage); return map; } else { return lpr->data; } } /** * Unmap a resource. */ void llvmpipe_resource_unmap(struct pipe_resource *resource, unsigned level, unsigned layer) { struct llvmpipe_resource *lpr = llvmpipe_resource(resource); if (lpr->dt) { /* display target */ struct llvmpipe_screen *lp_screen = llvmpipe_screen(resource->screen); struct sw_winsys *winsys = lp_screen->winsys; assert(level == 0); assert(layer == 0); winsys->displaytarget_unmap(winsys, lpr->dt); } } void * llvmpipe_resource_data(struct pipe_resource *resource) { struct llvmpipe_resource *lpr = llvmpipe_resource(resource); assert(!llvmpipe_resource_is_texture(resource)); return lpr->data; } static struct pipe_resource * llvmpipe_resource_from_handle(struct pipe_screen *screen, const struct pipe_resource *template, struct winsys_handle *whandle) { struct sw_winsys *winsys = llvmpipe_screen(screen)->winsys; struct llvmpipe_resource *lpr; /* XXX Seems like from_handled depth textures doesn't work that well */ lpr = CALLOC_STRUCT(llvmpipe_resource); if (!lpr) { goto no_lpr; } lpr->base = *template; pipe_reference_init(&lpr->base.reference, 1); lpr->base.screen = screen; /* * Looks like unaligned displaytargets work just fine, * at least sampler/render ones. */ #if 0 assert(lpr->base.width0 == width); assert(lpr->base.height0 == height); #endif lpr->num_slices_faces[0] = 1; lpr->img_stride[0] = 0; lpr->dt = winsys->displaytarget_from_handle(winsys, template, whandle, &lpr->row_stride[0]); if (!lpr->dt) { goto no_dt; } lpr->id = id_counter++; #ifdef DEBUG insert_at_tail(&resource_list, lpr); #endif return &lpr->base; no_dt: FREE(lpr); no_lpr: return NULL; } static boolean llvmpipe_resource_get_handle(struct pipe_screen *screen, struct pipe_resource *pt, struct winsys_handle *whandle) { struct sw_winsys *winsys = llvmpipe_screen(screen)->winsys; struct llvmpipe_resource *lpr = llvmpipe_resource(pt); assert(lpr->dt); if (!lpr->dt) return FALSE; return winsys->displaytarget_get_handle(winsys, lpr->dt, whandle); } static void * llvmpipe_transfer_map( struct pipe_context *pipe, struct pipe_resource *resource, unsigned level, unsigned usage, const struct pipe_box *box, struct pipe_transfer **transfer ) { struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe); struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen); struct llvmpipe_resource *lpr = llvmpipe_resource(resource); struct llvmpipe_transfer *lpt; struct pipe_transfer *pt; ubyte *map; enum pipe_format format; enum lp_texture_usage tex_usage; const char *mode; assert(resource); assert(level <= resource->last_level); /* * Transfers, like other pipe operations, must happen in order, so flush the * context if necessary. */ if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) { boolean read_only = !(usage & PIPE_TRANSFER_WRITE); boolean do_not_block = !!(usage & PIPE_TRANSFER_DONTBLOCK); if (!llvmpipe_flush_resource(pipe, resource, level, read_only, TRUE, /* cpu_access */ do_not_block, __FUNCTION__)) { /* * It would have blocked, but state tracker requested no to. */ assert(do_not_block); return NULL; } } /* Check if we're mapping the current constant buffer */ if ((usage & PIPE_TRANSFER_WRITE) && (resource->bind & PIPE_BIND_CONSTANT_BUFFER)) { unsigned i; for (i = 0; i < Elements(llvmpipe->constants[PIPE_SHADER_FRAGMENT]); ++i) { if (resource == llvmpipe->constants[PIPE_SHADER_FRAGMENT][i].buffer) { /* constants may have changed */ llvmpipe->dirty |= LP_NEW_CONSTANTS; break; } } } lpt = CALLOC_STRUCT(llvmpipe_transfer); if (!lpt) return NULL; pt = &lpt->base; pipe_resource_reference(&pt->resource, resource); pt->box = *box; pt->level = level; pt->stride = lpr->row_stride[level]; pt->layer_stride = lpr->img_stride[level]; pt->usage = usage; *transfer = pt; assert(level < LP_MAX_TEXTURE_LEVELS); /* printf("tex_transfer_map(%d, %d %d x %d of %d x %d, usage %d )\n", transfer->x, transfer->y, transfer->width, transfer->height, transfer->texture->width0, transfer->texture->height0, transfer->usage); */ if (usage == PIPE_TRANSFER_READ) { tex_usage = LP_TEX_USAGE_READ; mode = "read"; } else { tex_usage = LP_TEX_USAGE_READ_WRITE; mode = "read/write"; } if (0) { printf("transfer map tex %u mode %s\n", lpr->id, mode); } format = lpr->base.format; map = llvmpipe_resource_map(resource, level, box->z, tex_usage); /* May want to do different things here depending on read/write nature * of the map: */ if (usage & PIPE_TRANSFER_WRITE) { /* Do something to notify sharing contexts of a texture change. */ screen->timestamp++; } map += box->y / util_format_get_blockheight(format) * pt->stride + box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); return map; } static void llvmpipe_transfer_unmap(struct pipe_context *pipe, struct pipe_transfer *transfer) { assert(transfer->resource); llvmpipe_resource_unmap(transfer->resource, transfer->level, transfer->box.z); /* Effectively do the texture_update work here - if texture images * needed post-processing to put them into hardware layout, this is * where it would happen. For llvmpipe, nothing to do. */ assert (transfer->resource); pipe_resource_reference(&transfer->resource, NULL); FREE(transfer); } unsigned int llvmpipe_is_resource_referenced( struct pipe_context *pipe, struct pipe_resource *presource, unsigned level) { struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe ); /* * XXX checking only resources with the right bind flags * is unsafe since with opengl state tracker we can end up * with resources bound to places they weren't supposed to be * (buffers bound as sampler views is one possibility here). */ if (!(presource->bind & (PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW))) return LP_UNREFERENCED; return lp_setup_is_resource_referenced(llvmpipe->setup, presource); } /** * Returns the largest possible alignment for a format in llvmpipe */ unsigned llvmpipe_get_format_alignment( enum pipe_format format ) { const struct util_format_description *desc = util_format_description(format); unsigned size = 0; unsigned bytes; unsigned i; for (i = 0; i < desc->nr_channels; ++i) { size += desc->channel[i].size; } bytes = size / 8; if (!util_is_power_of_two(bytes)) { bytes /= desc->nr_channels; } if (bytes % 2 || bytes < 1) { return 1; } else { return bytes; } } /** * Create buffer which wraps user-space data. */ struct pipe_resource * llvmpipe_user_buffer_create(struct pipe_screen *screen, void *ptr, unsigned bytes, unsigned bind_flags) { struct llvmpipe_resource *buffer; buffer = CALLOC_STRUCT(llvmpipe_resource); if(!buffer) return NULL; pipe_reference_init(&buffer->base.reference, 1); buffer->base.screen = screen; buffer->base.format = PIPE_FORMAT_R8_UNORM; /* ?? */ buffer->base.bind = bind_flags; buffer->base.usage = PIPE_USAGE_IMMUTABLE; buffer->base.flags = 0; buffer->base.width0 = bytes; buffer->base.height0 = 1; buffer->base.depth0 = 1; buffer->base.array_size = 1; buffer->userBuffer = TRUE; buffer->data = ptr; return &buffer->base; } /** * Compute size (in bytes) need to store a texture image / mipmap level, * for just one cube face, one array layer or one 3D texture slice */ static unsigned tex_image_face_size(const struct llvmpipe_resource *lpr, unsigned level) { return lpr->img_stride[level]; } /** * Compute size (in bytes) need to store a texture image / mipmap level, * including all cube faces or 3D image slices */ static unsigned tex_image_size(const struct llvmpipe_resource *lpr, unsigned level) { const unsigned buf_size = tex_image_face_size(lpr, level); return buf_size * lpr->num_slices_faces[level]; } /** * Return pointer to a 2D texture image/face/slice. * No tiled/linear conversion is done. */ ubyte * llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr, unsigned face_slice, unsigned level) { struct llvmpipe_texture_image *img; unsigned offset; img = &lpr->linear_img; offset = lpr->linear_mip_offsets[level]; if (face_slice > 0) offset += face_slice * tex_image_face_size(lpr, level); return (ubyte *) img->data + offset; } /** * Allocate storage for a linear image * (all cube faces and all 3D slices, all levels). */ static void alloc_image_data(struct llvmpipe_resource *lpr) { uint alignment = MAX2(16, util_cpu_caps.cacheline); uint level; uint offset = 0; if (lpr->dt) { /* we get the linear memory from the winsys, and it has * already been zeroed */ struct llvmpipe_screen *screen = llvmpipe_screen(lpr->base.screen); struct sw_winsys *winsys = screen->winsys; assert(lpr->base.last_level == 0); lpr->linear_img.data = winsys->displaytarget_map(winsys, lpr->dt, PIPE_TRANSFER_READ_WRITE); } else { /* not a display target - allocate regular memory */ /* * Offset calculation for start of a specific mip/layer is always * offset = lpr->linear_mip_offsets[level] + lpr->img_stride[level] * layer */ for (level = 0; level <= lpr->base.last_level; level++) { uint buffer_size = tex_image_size(lpr, level); lpr->linear_mip_offsets[level] = offset; offset += align(buffer_size, alignment); } lpr->linear_img.data = align_malloc(offset, alignment); if (lpr->linear_img.data) { memset(lpr->linear_img.data, 0, offset); } } } /** * Return pointer to texture image data * for a particular cube face or 3D texture slice. * * \param face_slice the cube face or 3D slice of interest * \param usage one of LP_TEX_USAGE_READ/WRITE_ALL/READ_WRITE */ void * llvmpipe_get_texture_image(struct llvmpipe_resource *lpr, unsigned face_slice, unsigned level, enum lp_texture_usage usage) { struct llvmpipe_texture_image *target_img; void *target_data; unsigned target_offset; unsigned *target_off_ptr; assert(usage == LP_TEX_USAGE_READ || usage == LP_TEX_USAGE_READ_WRITE || usage == LP_TEX_USAGE_WRITE_ALL); if (lpr->dt) { assert(lpr->linear_img.data); } target_img = &lpr->linear_img; target_off_ptr = lpr->linear_mip_offsets; target_data = target_img->data; if (!target_data) { /* allocate memory for the target image now */ alloc_image_data(lpr); target_data = target_img->data; } target_offset = target_off_ptr[level]; if (face_slice > 0) { target_offset += face_slice * tex_image_face_size(lpr, level); } if (target_data) { target_data = (uint8_t *) target_data + target_offset; } return target_data; } /** * Return pointer to start of a texture image (1D, 2D, 3D, CUBE). * This is typically used when we're about to sample from a texture. */ void * llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr, unsigned level, enum lp_texture_usage usage) { const int slices = lpr->num_slices_faces[level]; int slice; void *map = NULL; assert(slices > 0); for (slice = slices - 1; slice >= 0; slice--) { map = llvmpipe_get_texture_image(lpr, slice, level, usage); } return map; } /** * Get pointer to a linear image (not the tile!) at tile (x,y). * \return pointer to start of image/face (not the tile) */ ubyte * llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr, unsigned face_slice, unsigned level, enum lp_texture_usage usage, unsigned x, unsigned y) { struct llvmpipe_texture_image *linear_img = &lpr->linear_img; uint8_t *linear_image; assert(llvmpipe_resource_is_texture(&lpr->base)); assert(x % TILE_SIZE == 0); assert(y % TILE_SIZE == 0); if (!linear_img->data) { /* allocate memory for the linear image now */ /* XXX should probably not do that here? */ alloc_image_data(lpr); } assert(linear_img->data); /* compute address of the slice/face of the image that contains the tile */ linear_image = llvmpipe_get_texture_image_address(lpr, face_slice, level); return linear_image; } /** * Return size of resource in bytes */ unsigned llvmpipe_resource_size(const struct pipe_resource *resource) { const struct llvmpipe_resource *lpr = llvmpipe_resource_const(resource); unsigned lvl, size = 0; if (llvmpipe_resource_is_texture(resource)) { for (lvl = 0; lvl <= lpr->base.last_level; lvl++) { if (lpr->linear_img.data) size += tex_image_size(lpr, lvl); } } else { size = resource->width0; } return size; } #ifdef DEBUG void llvmpipe_print_resources(void) { struct llvmpipe_resource *lpr; unsigned n = 0, total = 0; debug_printf("LLVMPIPE: current resources:\n"); foreach(lpr, &resource_list) { unsigned size = llvmpipe_resource_size(&lpr->base); debug_printf("resource %u at %p, size %ux%ux%u: %u bytes, refcount %u\n", lpr->id, (void *) lpr, lpr->base.width0, lpr->base.height0, lpr->base.depth0, size, lpr->base.reference.count); total += size; n++; } debug_printf("LLVMPIPE: total size of %u resources: %u\n", n, total); } #endif void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen) { #ifdef DEBUG /* init linked list for tracking resources */ { static boolean first_call = TRUE; if (first_call) { memset(&resource_list, 0, sizeof(resource_list)); make_empty_list(&resource_list); first_call = FALSE; } } #endif screen->resource_create = llvmpipe_resource_create; screen->resource_destroy = llvmpipe_resource_destroy; screen->resource_from_handle = llvmpipe_resource_from_handle; screen->resource_get_handle = llvmpipe_resource_get_handle; screen->can_create_resource = llvmpipe_can_create_resource; } void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe) { pipe->transfer_map = llvmpipe_transfer_map; pipe->transfer_unmap = llvmpipe_transfer_unmap; pipe->transfer_flush_region = u_default_transfer_flush_region; pipe->transfer_inline_write = u_default_transfer_inline_write; }