1 /**************************************************************************
2 *
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27 /*
28 * Authors:
29 * Keith Whitwell <keith@tungstengraphics.com>
30 * Michel Dänzer <michel@tungstengraphics.com>
31 */
32
33 #include "pipe/p_context.h"
34 #include "pipe/p_defines.h"
35 #include "util/u_inlines.h"
36 #include "util/u_math.h"
37 #include "util/u_memory.h"
38
39 #include "i915_context.h"
40 #include "i915_resource.h"
41
42
43
44 static boolean
i915_buffer_get_handle(struct pipe_screen * screen,struct pipe_resource * resource,struct winsys_handle * handle)45 i915_buffer_get_handle(struct pipe_screen *screen,
46 struct pipe_resource *resource,
47 struct winsys_handle *handle)
48 {
49 return FALSE;
50 }
51
52 static void
i915_buffer_destroy(struct pipe_screen * screen,struct pipe_resource * resource)53 i915_buffer_destroy(struct pipe_screen *screen,
54 struct pipe_resource *resource)
55 {
56 struct i915_buffer *buffer = i915_buffer(resource);
57 if (buffer->free_on_destroy)
58 align_free(buffer->data);
59 FREE(buffer);
60 }
61
62
63 static struct pipe_transfer *
i915_get_transfer(struct pipe_context * pipe,struct pipe_resource * resource,unsigned level,unsigned usage,const struct pipe_box * box)64 i915_get_transfer(struct pipe_context *pipe,
65 struct pipe_resource *resource,
66 unsigned level,
67 unsigned usage,
68 const struct pipe_box *box)
69 {
70 struct i915_context *i915 = i915_context(pipe);
71 struct pipe_transfer *transfer = util_slab_alloc(&i915->transfer_pool);
72
73 if (transfer == NULL)
74 return NULL;
75
76 transfer->resource = resource;
77 transfer->level = level;
78 transfer->usage = usage;
79 transfer->box = *box;
80
81 /* Note strides are zero, this is ok for buffers, but not for
82 * textures 2d & higher at least.
83 */
84 return transfer;
85 }
86
87 static void
i915_transfer_destroy(struct pipe_context * pipe,struct pipe_transfer * transfer)88 i915_transfer_destroy(struct pipe_context *pipe,
89 struct pipe_transfer *transfer)
90 {
91 struct i915_context *i915 = i915_context(pipe);
92 util_slab_free(&i915->transfer_pool, transfer);
93 }
94
95 static void *
i915_buffer_transfer_map(struct pipe_context * pipe,struct pipe_transfer * transfer)96 i915_buffer_transfer_map( struct pipe_context *pipe,
97 struct pipe_transfer *transfer )
98 {
99 struct i915_buffer *buffer = i915_buffer(transfer->resource);
100 return buffer->data + transfer->box.x;
101 }
102
103
104 static void
i915_buffer_transfer_inline_write(struct pipe_context * rm_ctx,struct pipe_resource * resource,unsigned level,unsigned usage,const struct pipe_box * box,const void * data,unsigned stride,unsigned layer_stride)105 i915_buffer_transfer_inline_write( struct pipe_context *rm_ctx,
106 struct pipe_resource *resource,
107 unsigned level,
108 unsigned usage,
109 const struct pipe_box *box,
110 const void *data,
111 unsigned stride,
112 unsigned layer_stride)
113 {
114 struct i915_buffer *buffer = i915_buffer(resource);
115
116 memcpy(buffer->data + box->x,
117 data,
118 box->width);
119 }
120
121
122 struct u_resource_vtbl i915_buffer_vtbl =
123 {
124 i915_buffer_get_handle, /* get_handle */
125 i915_buffer_destroy, /* resource_destroy */
126 i915_get_transfer, /* get_transfer */
127 i915_transfer_destroy, /* transfer_destroy */
128 i915_buffer_transfer_map, /* transfer_map */
129 u_default_transfer_flush_region, /* transfer_flush_region */
130 u_default_transfer_unmap, /* transfer_unmap */
131 i915_buffer_transfer_inline_write /* transfer_inline_write */
132 };
133
134
135
136 struct pipe_resource *
i915_buffer_create(struct pipe_screen * screen,const struct pipe_resource * template)137 i915_buffer_create(struct pipe_screen *screen,
138 const struct pipe_resource *template)
139 {
140 struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
141
142 if (!buf)
143 return NULL;
144
145 buf->b.b = *template;
146 buf->b.vtbl = &i915_buffer_vtbl;
147 pipe_reference_init(&buf->b.b.reference, 1);
148 buf->b.b.screen = screen;
149 buf->data = align_malloc(template->width0, 16);
150 buf->free_on_destroy = TRUE;
151
152 if (!buf->data)
153 goto err;
154
155 return &buf->b.b;
156
157 err:
158 FREE(buf);
159 return NULL;
160 }
161
162
163
164 struct pipe_resource *
i915_user_buffer_create(struct pipe_screen * screen,void * ptr,unsigned bytes,unsigned bind)165 i915_user_buffer_create(struct pipe_screen *screen,
166 void *ptr,
167 unsigned bytes,
168 unsigned bind)
169 {
170 struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
171
172 if (!buf)
173 return NULL;
174
175 pipe_reference_init(&buf->b.b.reference, 1);
176 buf->b.vtbl = &i915_buffer_vtbl;
177 buf->b.b.screen = screen;
178 buf->b.b.format = PIPE_FORMAT_R8_UNORM; /* ?? */
179 buf->b.b.usage = PIPE_USAGE_IMMUTABLE;
180 buf->b.b.bind = bind;
181 buf->b.b.flags = 0;
182 buf->b.b.width0 = bytes;
183 buf->b.b.height0 = 1;
184 buf->b.b.depth0 = 1;
185 buf->b.b.array_size = 1;
186
187 buf->data = ptr;
188 buf->free_on_destroy = FALSE;
189
190 return &buf->b.b;
191 }
192