r600_buffer.c revision 05ea705c7c6212d16fcc9bcf04619ffd4311bb03 
1/*
2 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
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 * Authors:
24 *      Jerome Glisse
25 *      Corbin Simpson <MostAwesomeDude@gmail.com>
26 */
27#include "r600_pipe.h"
28#include "util/u_upload_mgr.h"
29#include "util/u_memory.h"
30
31static void r600_buffer_destroy(struct pipe_screen *screen,
32				struct pipe_resource *buf)
33{
34	struct r600_resource *rbuffer = r600_resource(buf);
35
36	pb_reference(&rbuffer->buf, NULL);
37	FREE(rbuffer);
38}
39
40static struct pipe_transfer *r600_get_transfer(struct pipe_context *ctx,
41					       struct pipe_resource *resource,
42					       unsigned level,
43					       unsigned usage,
44					       const struct pipe_box *box)
45{
46	struct r600_context *rctx = (struct r600_context*)ctx;
47	struct pipe_transfer *transfer = util_slab_alloc(&rctx->pool_transfers);
48
49	transfer->resource = resource;
50	transfer->level = level;
51	transfer->usage = usage;
52	transfer->box = *box;
53	transfer->stride = 0;
54	transfer->layer_stride = 0;
55	transfer->data = NULL;
56
57	/* Note strides are zero, this is ok for buffers, but not for
58	 * textures 2d & higher at least.
59	 */
60	return transfer;
61}
62
63static void r600_set_constants_dirty_if_bound(struct r600_context *rctx,
64					      struct r600_constbuf_state *state,
65					      struct r600_resource *rbuffer)
66{
67	bool found = false;
68	uint32_t mask = state->enabled_mask;
69
70	while (mask) {
71		unsigned i = u_bit_scan(&mask);
72		if (state->cb[i].buffer == &rbuffer->b.b) {
73			found = true;
74			state->dirty_mask |= 1 << i;
75		}
76	}
77	if (found) {
78		r600_constant_buffers_dirty(rctx, state);
79	}
80}
81
82static void *r600_buffer_transfer_map(struct pipe_context *pipe,
83				      struct pipe_transfer *transfer)
84{
85	struct r600_resource *rbuffer = r600_resource(transfer->resource);
86	struct r600_context *rctx = (struct r600_context*)pipe;
87	uint8_t *data;
88
89	if (transfer->usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
90	    !(transfer->usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
91		assert(transfer->usage & PIPE_TRANSFER_WRITE);
92
93		/* Check if mapping this buffer would cause waiting for the GPU. */
94		if (rctx->ws->cs_is_buffer_referenced(rctx->cs, rbuffer->cs_buf, RADEON_USAGE_READWRITE) ||
95		    rctx->ws->buffer_is_busy(rbuffer->buf, RADEON_USAGE_READWRITE)) {
96			unsigned i;
97
98			/* Discard the buffer. */
99			pb_reference(&rbuffer->buf, NULL);
100
101			/* Create a new one in the same pipe_resource. */
102			/* XXX We probably want a different alignment for buffers and textures. */
103			r600_init_resource(rctx->screen, rbuffer, rbuffer->b.b.width0, 4096,
104					   rbuffer->b.b.bind, rbuffer->b.b.usage);
105
106			/* We changed the buffer, now we need to bind it where the old one was bound. */
107			/* Vertex buffers. */
108			for (i = 0; i < rctx->nr_vertex_buffers; i++) {
109				if (rctx->vertex_buffer[i].buffer == &rbuffer->b.b) {
110					r600_inval_vertex_cache(rctx);
111					r600_atom_dirty(rctx, &rctx->vertex_buffer_state);
112				}
113			}
114			/* Streamout buffers. */
115			for (i = 0; i < rctx->num_so_targets; i++) {
116				if (rctx->so_targets[i]->b.buffer == &rbuffer->b.b) {
117					r600_context_streamout_end(rctx);
118					rctx->streamout_start = TRUE;
119					rctx->streamout_append_bitmask = ~0;
120				}
121			}
122			/* Constant buffers. */
123			r600_set_constants_dirty_if_bound(rctx, &rctx->vs_constbuf_state, rbuffer);
124			r600_set_constants_dirty_if_bound(rctx, &rctx->ps_constbuf_state, rbuffer);
125		}
126	}
127
128	data = rctx->ws->buffer_map(rbuffer->cs_buf, rctx->cs, transfer->usage);
129	if (!data)
130		return NULL;
131
132	return (uint8_t*)data + transfer->box.x;
133}
134
135static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
136					struct pipe_transfer *transfer)
137{
138	/* no-op */
139}
140
141static void r600_transfer_destroy(struct pipe_context *ctx,
142				  struct pipe_transfer *transfer)
143{
144	struct r600_context *rctx = (struct r600_context*)ctx;
145	util_slab_free(&rctx->pool_transfers, transfer);
146}
147
148static const struct u_resource_vtbl r600_buffer_vtbl =
149{
150	u_default_resource_get_handle,		/* get_handle */
151	r600_buffer_destroy,			/* resource_destroy */
152	r600_get_transfer,			/* get_transfer */
153	r600_transfer_destroy,			/* transfer_destroy */
154	r600_buffer_transfer_map,		/* transfer_map */
155	NULL,					/* transfer_flush_region */
156	r600_buffer_transfer_unmap,		/* transfer_unmap */
157	NULL					/* transfer_inline_write */
158};
159
160bool r600_init_resource(struct r600_screen *rscreen,
161			struct r600_resource *res,
162			unsigned size, unsigned alignment,
163			unsigned bind, unsigned usage)
164{
165	uint32_t initial_domain, domains;
166
167	/* Staging resources particpate in transfers and blits only
168	 * and are used for uploads and downloads from regular
169	 * resources.  We generate them internally for some transfers.
170	 */
171	if (usage == PIPE_USAGE_STAGING) {
172		domains = RADEON_DOMAIN_GTT;
173		initial_domain = RADEON_DOMAIN_GTT;
174	} else {
175		domains = RADEON_DOMAIN_GTT | RADEON_DOMAIN_VRAM;
176
177		switch(usage) {
178		case PIPE_USAGE_DYNAMIC:
179		case PIPE_USAGE_STREAM:
180		case PIPE_USAGE_STAGING:
181			initial_domain = RADEON_DOMAIN_GTT;
182			break;
183		case PIPE_USAGE_DEFAULT:
184		case PIPE_USAGE_STATIC:
185		case PIPE_USAGE_IMMUTABLE:
186		default:
187			initial_domain = RADEON_DOMAIN_VRAM;
188			break;
189		}
190	}
191
192	res->buf = rscreen->ws->buffer_create(rscreen->ws, size, alignment, bind, initial_domain);
193	if (!res->buf) {
194		return false;
195	}
196
197	res->cs_buf = rscreen->ws->buffer_get_cs_handle(res->buf);
198	res->domains = domains;
199	return true;
200}
201
202struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
203					 const struct pipe_resource *templ)
204{
205	struct r600_screen *rscreen = (struct r600_screen*)screen;
206	struct r600_resource *rbuffer;
207	/* XXX We probably want a different alignment for buffers and textures. */
208	unsigned alignment = 4096;
209
210	rbuffer = MALLOC_STRUCT(r600_resource);
211
212	rbuffer->b.b = *templ;
213	pipe_reference_init(&rbuffer->b.b.reference, 1);
214	rbuffer->b.b.screen = screen;
215	rbuffer->b.vtbl = &r600_buffer_vtbl;
216
217	if (!r600_init_resource(rscreen, rbuffer, templ->width0, alignment, templ->bind, templ->usage)) {
218		FREE(rbuffer);
219		return NULL;
220	}
221	return &rbuffer->b.b;
222}
223