1 /* 2 * Copyright 2014, 2015 Red Hat. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 #include "util/u_inlines.h" 24 #include "virgl_context.h" 25 #include "virgl_resource.h" 26 #include "virgl_screen.h" 27 28 bool virgl_res_needs_flush_wait(struct virgl_context *vctx, 29 struct virgl_resource *res, 30 unsigned usage) 31 { 32 struct virgl_screen *vs = virgl_screen(vctx->base.screen); 33 34 if ((!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) && vs->vws->res_is_referenced(vs->vws, vctx->cbuf, res->hw_res)) { 35 return true; 36 } 37 return false; 38 } 39 40 bool virgl_res_needs_readback(struct virgl_context *vctx, 41 struct virgl_resource *res, 42 unsigned usage) 43 { 44 bool readback = true; 45 if (res->clean) 46 readback = false; 47 else if (usage & PIPE_TRANSFER_DISCARD_RANGE) 48 readback = false; 49 else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) == 50 (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) 51 readback = false; 52 return readback; 53 } 54 55 static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen, 56 const struct pipe_resource *templ) 57 { 58 struct virgl_screen *vs = virgl_screen(screen); 59 if (templ->target == PIPE_BUFFER) 60 return virgl_buffer_create(vs, templ); 61 else 62 return virgl_texture_create(vs, templ); 63 } 64 65 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen, 66 const struct pipe_resource *templ, 67 struct winsys_handle *whandle, 68 unsigned usage) 69 { 70 struct virgl_screen *vs = virgl_screen(screen); 71 if (templ->target == PIPE_BUFFER) 72 return NULL; 73 else 74 return virgl_texture_from_handle(vs, templ, whandle); 75 } 76 77 void virgl_init_screen_resource_functions(struct pipe_screen *screen) 78 { 79 screen->resource_create = virgl_resource_create; 80 screen->resource_from_handle = virgl_resource_from_handle; 81 screen->resource_get_handle = u_resource_get_handle_vtbl; 82 screen->resource_destroy = u_resource_destroy_vtbl; 83 } 84 85 static void virgl_buffer_subdata(struct pipe_context *pipe, 86 struct pipe_resource *resource, 87 unsigned usage, unsigned offset, 88 unsigned size, const void *data) 89 { 90 struct pipe_box box; 91 92 if (offset == 0 && size == resource->width0) 93 usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE; 94 else 95 usage |= PIPE_TRANSFER_DISCARD_RANGE; 96 97 u_box_1d(offset, size, &box); 98 virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0); 99 } 100 101 void virgl_init_context_resource_functions(struct pipe_context *ctx) 102 { 103 ctx->transfer_map = u_transfer_map_vtbl; 104 ctx->transfer_flush_region = u_transfer_flush_region_vtbl; 105 ctx->transfer_unmap = u_transfer_unmap_vtbl; 106 ctx->buffer_subdata = virgl_buffer_subdata; 107 ctx->texture_subdata = u_default_texture_subdata; 108 } 109
