diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_screen_buffer.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_screen_buffer.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_screen_buffer.c b/src/gallium/drivers/r300/r300_screen_buffer.c new file mode 100644 index 0000000000..cb47ba1688 --- /dev/null +++ b/src/gallium/drivers/r300/r300_screen_buffer.c @@ -0,0 +1,374 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * 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 + * on 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 + * THE AUTHOR(S) AND/OR THEIR 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: Dave Airlie + */ +#include <stdio.h> + +#include "util/u_inlines.h" +#include "util/u_format.h" +#include "util/u_memory.h" +#include "util/u_upload_mgr.h" +#include "util/u_math.h" + +#include "r300_screen_buffer.h" + +#include "r300_winsys.h" + +static unsigned r300_buffer_is_referenced(struct pipe_context *context, + struct pipe_resource *buf, + unsigned face, unsigned level) +{ + struct r300_context *r300 = r300_context(context); + struct r300_buffer *rbuf = r300_buffer(buf); + + if (r300_buffer_is_user_buffer(buf)) + return PIPE_UNREFERENCED; + + if (r300->rws->is_buffer_referenced(r300->rws, rbuf->buf)) + return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE; + + return PIPE_UNREFERENCED; +} + +/* External helper, not required to implent u_resource_vtbl: + */ +int r300_upload_index_buffer(struct r300_context *r300, + struct pipe_resource **index_buffer, + unsigned index_size, + unsigned start, + unsigned count) +{ + struct pipe_resource *upload_buffer = NULL; + unsigned index_offset = start * index_size; + int ret = 0; + + if (r300_buffer_is_user_buffer(*index_buffer)) { + ret = u_upload_buffer(r300->upload_ib, + index_offset, + count * index_size, + *index_buffer, + &index_offset, + &upload_buffer); + if (ret) { + goto done; + } + *index_buffer = upload_buffer; + } + done: + // if (upload_buffer) + // pipe_resource_reference(&upload_buffer, NULL); + return ret; +} + +/* External helper, not required to implent u_resource_vtbl: + */ +int r300_upload_user_buffers(struct r300_context *r300) +{ + enum pipe_error ret = PIPE_OK; + int i, nr; + + nr = r300->vertex_buffer_count; + + for (i = 0; i < nr; i++) { + + if (r300_buffer_is_user_buffer(r300->vertex_buffer[i].buffer)) { + struct pipe_resource *upload_buffer = NULL; + unsigned offset = 0; /*r300->vertex_buffer[i].buffer_offset * 4;*/ + unsigned size = r300->vertex_buffer[i].buffer->width0; + unsigned upload_offset; + ret = u_upload_buffer(r300->upload_vb, + offset, size, + r300->vertex_buffer[i].buffer, + &upload_offset, &upload_buffer); + if (ret) + return ret; + + pipe_resource_reference(&r300->vertex_buffer[i].buffer, NULL); + r300->vertex_buffer[i].buffer = upload_buffer; + r300->vertex_buffer[i].buffer_offset = upload_offset; + } + } + return ret; +} + +static struct r300_winsys_buffer * +r300_winsys_buffer_create(struct r300_screen *r300screen, + unsigned alignment, + unsigned usage, + unsigned size) +{ + struct r300_winsys_screen *rws = r300screen->rws; + struct r300_winsys_buffer *buf; + + buf = rws->buffer_create(rws, alignment, usage, size); + return buf; +} + +static void r300_winsys_buffer_destroy(struct r300_screen *r300screen, + struct r300_buffer *rbuf) +{ + struct r300_winsys_screen *rws = r300screen->rws; + + if (rbuf->buf) { + rws->buffer_reference(rws, &rbuf->buf, NULL); + rbuf->buf = NULL; + } +} + + +static void r300_buffer_destroy(struct pipe_screen *screen, + struct pipe_resource *buf) +{ + struct r300_screen *r300screen = r300_screen(screen); + struct r300_buffer *rbuf = r300_buffer(buf); + + r300_winsys_buffer_destroy(r300screen, rbuf); + FREE(rbuf); +} + +static void * +r300_buffer_map_range(struct pipe_screen *screen, + struct pipe_resource *buf, + unsigned offset, unsigned length, + unsigned usage ) +{ + struct r300_screen *r300screen = r300_screen(screen); + struct r300_winsys_screen *rws = r300screen->rws; + struct r300_buffer *rbuf = r300_buffer(buf); + void *map; + int flush = 0; + int i; + + if (rbuf->user_buffer) + return rbuf->user_buffer; + + if (rbuf->b.b.bind & PIPE_BIND_CONSTANT_BUFFER) { + goto just_map; + } + + /* check if the mapping is to a range we already flushed */ + if (usage & PIPE_TRANSFER_DISCARD) { + for (i = 0; i < rbuf->num_ranges; i++) { + + if ((offset >= rbuf->ranges[i].start) && + (offset < rbuf->ranges[i].end)) + flush = 1; + + if (flush) { + /* unreference this hw buffer and allocate a new one */ + rws->buffer_reference(rws, &rbuf->buf, NULL); + + rbuf->num_ranges = 0; + rbuf->map = NULL; + rbuf->buf = r300_winsys_buffer_create(r300screen, + 16, + rbuf->b.b.bind, /* XXX */ + rbuf->b.b.width0); + break; + } + } + } +just_map: + map = rws->buffer_map(rws, rbuf->buf, usage); + + return map; +} + +static void +r300_buffer_flush_mapped_range( struct pipe_screen *screen, + struct pipe_resource *buf, + unsigned offset, + unsigned length ) +{ + struct r300_buffer *rbuf = r300_buffer(buf); + int i; + + if (rbuf->user_buffer) + return; + + if (rbuf->b.b.bind & PIPE_BIND_CONSTANT_BUFFER) + return; + + /* mark the range as used */ + for(i = 0; i < rbuf->num_ranges; ++i) { + if(offset <= rbuf->ranges[i].end && rbuf->ranges[i].start <= (offset+length)) { + rbuf->ranges[i].start = MIN2(rbuf->ranges[i].start, offset); + rbuf->ranges[i].end = MAX2(rbuf->ranges[i].end, (offset+length)); + return; + } + } + + rbuf->ranges[rbuf->num_ranges].start = offset; + rbuf->ranges[rbuf->num_ranges].end = offset+length; + rbuf->num_ranges++; +} + + +static void +r300_buffer_unmap(struct pipe_screen *screen, + struct pipe_resource *buf) +{ + struct r300_screen *r300screen = r300_screen(screen); + struct r300_winsys_screen *rws = r300screen->rws; + struct r300_buffer *rbuf = r300_buffer(buf); + + if (rbuf->buf) { + rws->buffer_unmap(rws, rbuf->buf); + } +} + + + + +/* As a first step, keep the original code intact, implement buffer + * transfers in terms of the old map/unmap functions. + * + * Utility functions for transfer create/destroy are hooked in and + * just record the arguments to those functions. + */ +static void * +r300_buffer_transfer_map( struct pipe_context *pipe, + struct pipe_transfer *transfer ) +{ + uint8_t *map = r300_buffer_map_range( pipe->screen, + transfer->resource, + transfer->box.x, + transfer->box.width, + transfer->usage ); + if (map == NULL) + return NULL; + + /* map_buffer() returned a pointer to the beginning of the buffer, + * but transfers are expected to return a pointer to just the + * region specified in the box. + */ + return map + transfer->box.x; +} + + + +static void r300_buffer_transfer_flush_region( struct pipe_context *pipe, + struct pipe_transfer *transfer, + const struct pipe_box *box) +{ + assert(box->x + box->width <= transfer->box.width); + + r300_buffer_flush_mapped_range(pipe->screen, + transfer->resource, + transfer->box.x + box->x, + box->width); +} + +static void r300_buffer_transfer_unmap( struct pipe_context *pipe, + struct pipe_transfer *transfer ) +{ + r300_buffer_unmap(pipe->screen, + transfer->resource); +} + + + + +struct u_resource_vtbl r300_buffer_vtbl = +{ + u_default_resource_get_handle, /* get_handle */ + r300_buffer_destroy, /* resource_destroy */ + r300_buffer_is_referenced, /* is_buffer_referenced */ + u_default_get_transfer, /* get_transfer */ + u_default_transfer_destroy, /* transfer_destroy */ + r300_buffer_transfer_map, /* transfer_map */ + r300_buffer_transfer_flush_region, /* transfer_flush_region */ + r300_buffer_transfer_unmap, /* transfer_unmap */ + u_default_transfer_inline_write /* transfer_inline_write */ +}; + + + + +struct pipe_resource *r300_buffer_create(struct pipe_screen *screen, + const struct pipe_resource *template) +{ + struct r300_screen *r300screen = r300_screen(screen); + struct r300_buffer *rbuf; + unsigned alignment = 16; + + rbuf = CALLOC_STRUCT(r300_buffer); + if (!rbuf) + goto error1; + + rbuf->magic = R300_BUFFER_MAGIC; + + rbuf->b.b = *template; + rbuf->b.vtbl = &r300_buffer_vtbl; + pipe_reference_init(&rbuf->b.b.reference, 1); + rbuf->b.b.screen = screen; + + if (rbuf->b.b.bind & R300_BIND_OQBO) + alignment = 4096; + + rbuf->buf = r300_winsys_buffer_create(r300screen, + alignment, + rbuf->b.b.bind, + rbuf->b.b.width0); + + if (!rbuf->buf) + goto error2; + + return &rbuf->b.b; +error2: + FREE(rbuf); +error1: + return NULL; +} + + +struct pipe_resource *r300_user_buffer_create(struct pipe_screen *screen, + void *ptr, + unsigned bytes, + unsigned bind) +{ + struct r300_buffer *rbuf; + + rbuf = CALLOC_STRUCT(r300_buffer); + if (!rbuf) + goto no_rbuf; + + rbuf->magic = R300_BUFFER_MAGIC; + + pipe_reference_init(&rbuf->b.b.reference, 1); + rbuf->b.vtbl = &r300_buffer_vtbl; + rbuf->b.b.screen = screen; + rbuf->b.b.format = PIPE_FORMAT_R8_UNORM; + rbuf->b.b._usage = PIPE_USAGE_IMMUTABLE; + rbuf->b.b.bind = bind; + rbuf->b.b.width0 = bytes; + rbuf->b.b.height0 = 1; + rbuf->b.b.depth0 = 1; + + rbuf->user_buffer = ptr; + return &rbuf->b.b; + +no_rbuf: + return NULL; +} + |