xa_context.c revision 9f2f5b3d7fd70663b98da5d302fcdfd5bc93db05 
1/**********************************************************
2 * Copyright 2009-2011 VMware, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 *********************************************************
25 * Authors:
26 * Zack Rusin <zackr-at-vmware-dot-com>
27 * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
28 */
29#include "xa_context.h"
30#include "xa_priv.h"
31#include "cso_cache/cso_context.h"
32#include "util/u_inlines.h"
33#include "util/u_rect.h"
34#include "pipe/p_context.h"
35
36
37struct xa_context *
38xa_context_default(struct xa_tracker *xa)
39{
40    return xa->default_ctx;
41}
42
43struct xa_context *
44xa_context_create(struct xa_tracker *xa)
45{
46    struct xa_context *ctx = calloc(1, sizeof(*ctx));
47
48    ctx->xa = xa;
49    ctx->pipe = xa->screen->context_create(xa->screen, NULL);
50    ctx->cso = cso_create_context(ctx->pipe);
51    ctx->shaders = xa_shaders_create(ctx);
52    renderer_init_state(ctx);
53
54    return ctx;
55}
56
57void
58xa_context_destroy(struct xa_context *r)
59{
60    struct pipe_resource **vsbuf = &r->vs_const_buffer;
61    struct pipe_resource **fsbuf = &r->fs_const_buffer;
62
63    if (*vsbuf)
64	pipe_resource_reference(vsbuf, NULL);
65
66    if (*fsbuf)
67	pipe_resource_reference(fsbuf, NULL);
68
69    if (r->shaders) {
70	xa_shaders_destroy(r->shaders);
71	r->shaders = NULL;
72    }
73
74    if (r->cso) {
75	cso_release_all(r->cso);
76	cso_destroy_context(r->cso);
77	r->cso = NULL;
78    }
79}
80
81int
82xa_surface_dma(struct xa_context *ctx,
83	       struct xa_surface *srf,
84	       void *data,
85	       unsigned int pitch,
86	       int to_surface, struct xa_box *boxes, unsigned int num_boxes)
87{
88    struct pipe_transfer *transfer;
89    void *map;
90    int w, h, i;
91    enum pipe_transfer_usage transfer_direction;
92    struct pipe_context *pipe = ctx->pipe;
93
94    transfer_direction = (to_surface ? PIPE_TRANSFER_WRITE :
95			  PIPE_TRANSFER_READ);
96
97    for (i = 0; i < num_boxes; ++i, ++boxes) {
98	w = boxes->x2 - boxes->x1;
99	h = boxes->y2 - boxes->y1;
100
101	transfer = pipe_get_transfer(pipe, srf->tex, 0, 0,
102				     transfer_direction, boxes->x1, boxes->y1,
103				     w, h);
104	if (!transfer)
105	    return -XA_ERR_NORES;
106
107	map = pipe_transfer_map(ctx->pipe, transfer);
108	if (!map)
109	    goto out_no_map;
110
111	if (to_surface) {
112	    util_copy_rect(map, srf->tex->format, transfer->stride,
113			   0, 0, w, h, data, pitch, boxes->x1, boxes->y1);
114	} else {
115	    util_copy_rect(data, srf->tex->format, pitch,
116			   boxes->x1, boxes->y1, w, h, map, transfer->stride, 0,
117			   0);
118	}
119	pipe->transfer_unmap(pipe, transfer);
120	pipe->transfer_destroy(pipe, transfer);
121	if (to_surface)
122	    pipe->flush(pipe, &ctx->last_fence);
123    }
124    return XA_ERR_NONE;
125 out_no_map:
126    pipe->transfer_destroy(pipe, transfer);
127    return -XA_ERR_NORES;
128}
129
130void *
131xa_surface_map(struct xa_context *ctx,
132	       struct xa_surface *srf, unsigned int usage)
133{
134    void *map;
135    unsigned int transfer_direction = 0;
136    struct pipe_context *pipe = ctx->pipe;
137
138    if (srf->transfer)
139	return NULL;
140
141    if (usage & XA_MAP_READ)
142	transfer_direction = PIPE_TRANSFER_READ;
143    if (usage & XA_MAP_WRITE)
144	transfer_direction = PIPE_TRANSFER_WRITE;
145
146    if (!transfer_direction)
147	return NULL;
148
149    srf->transfer = pipe_get_transfer(pipe, srf->tex, 0, 0,
150				      transfer_direction, 0, 0,
151				      srf->tex->width0, srf->tex->height0);
152    if (!srf->transfer)
153	return NULL;
154
155    map = pipe_transfer_map(pipe, srf->transfer);
156    if (!map)
157	pipe->transfer_destroy(pipe, srf->transfer);
158
159    srf->mapping_pipe = pipe;
160    return map;
161}
162
163void
164xa_surface_unmap(struct xa_surface *srf)
165{
166    if (srf->transfer) {
167	struct pipe_context *pipe = srf->mapping_pipe;
168
169	pipe->transfer_unmap(pipe, srf->transfer);
170	pipe->transfer_destroy(pipe, srf->transfer);
171	srf->transfer = NULL;
172    }
173}
174
175int
176xa_copy_prepare(struct xa_context *ctx,
177		struct xa_surface *dst, struct xa_surface *src)
178{
179    if (src == dst || src->tex->format != dst->tex->format)
180	return -XA_ERR_INVAL;
181
182    ctx->src = src;
183    ctx->dst = dst;
184
185    return 0;
186}
187
188void
189xa_copy(struct xa_context *ctx,
190	int dx, int dy, int sx, int sy, int width, int height)
191{
192    struct pipe_box src_box;
193
194    u_box_2d(sx, sy, width, height, &src_box);
195    ctx->pipe->resource_copy_region(ctx->pipe,
196				    ctx->dst->tex, 0, dx, dy, 0, ctx->src->tex,
197				    0, &src_box);
198
199}
200
201void
202xa_copy_done(struct xa_context *ctx)
203{
204    ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
205}
206
207struct xa_fence *
208xa_fence_get(struct xa_context *ctx)
209{
210    struct xa_fence *fence = malloc(sizeof(*fence));
211    struct pipe_screen *screen = ctx->xa->screen;
212
213    if (!fence)
214	return NULL;
215
216    fence->xa = ctx->xa;
217
218    if (ctx->last_fence == NULL)
219	fence->pipe_fence = NULL;
220    else
221	screen->fence_reference(screen, &fence->pipe_fence, ctx->last_fence);
222
223    return fence;
224}
225
226int
227xa_fence_wait(struct xa_fence *fence, uint64_t timeout)
228{
229    if (!fence)
230	return XA_ERR_NONE;
231
232    if (fence->pipe_fence) {
233	struct pipe_screen *screen = fence->xa->screen;
234	boolean timed_out;
235
236	timed_out = !screen->fence_finish(screen, fence->pipe_fence, timeout);
237	if (timed_out)
238	    return -XA_ERR_BUSY;
239
240	screen->fence_reference(screen, &fence->pipe_fence, NULL);
241    }
242    return XA_ERR_NONE;
243}
244
245void
246xa_fence_destroy(struct xa_fence *fence)
247{
248    if (!fence)
249	return;
250
251    if (fence->pipe_fence) {
252	struct pipe_screen *screen = fence->xa->screen;
253
254	screen->fence_reference(screen, &fence->pipe_fence, NULL);
255    }
256
257    free(fence);
258}
259