1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/mtypes.h"
31 #include "main/bufferobj.h"
33 #include "st_context.h"
34 #include "st_cb_bufferobjects.h"
36 #include "pipe/p_context.h"
37 #include "pipe/p_defines.h"
38 #include "pipe/p_winsys.h"
39 #include "pipe/p_inlines.h"
43 /* Pixel buffers and Vertex/index buffers are handled through these
44 * mesa callbacks. Framebuffer/Renderbuffer objects are
45 * created/managed elsewhere.
51 * There is some duplication between mesa's bufferobjects and our
52 * bufmgr buffers. Both have an integer handle and a hashtable to
53 * lookup an opaque structure. It would be nice if the handles and
54 * internal structure where somehow shared.
56 static struct gl_buffer_object
*
57 st_bufferobj_alloc(GLcontext
*ctx
, GLuint name
, GLenum target
)
59 struct st_buffer_object
*st_obj
= CALLOC_STRUCT(st_buffer_object
);
64 _mesa_initialize_buffer_object(&st_obj
->Base
, name
, target
);
72 * Deallocate/free a vertex/pixel buffer object.
73 * Called via glDeleteBuffersARB().
76 st_bufferobj_free(GLcontext
*ctx
, struct gl_buffer_object
*obj
)
78 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
79 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
82 pipe_buffer_reference(pipe
->winsys
, &st_obj
->buffer
, NULL
);
90 * Replace data in a subrange of buffer object. If the data range
91 * specified by size + offset extends beyond the end of the buffer or
92 * if data is NULL, no copy is performed.
93 * Called via glBufferSubDataARB().
96 st_bufferobj_subdata(GLcontext
*ctx
,
100 const GLvoid
* data
, struct gl_buffer_object
*obj
)
102 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
103 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
106 if (offset
>= st_obj
->size
|| size
> (st_obj
->size
- offset
))
109 map
= pipe
->winsys
->buffer_map(pipe
->winsys
, st_obj
->buffer
,
110 PIPE_BUFFER_USAGE_CPU_WRITE
);
111 memcpy(map
+ offset
, data
, size
);
112 pipe
->winsys
->buffer_unmap(pipe
->winsys
, st_obj
->buffer
);
117 * Called via glGetBufferSubDataARB().
120 st_bufferobj_get_subdata(GLcontext
*ctx
,
124 GLvoid
* data
, struct gl_buffer_object
*obj
)
126 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
127 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
130 if (offset
>= st_obj
->size
|| size
> (st_obj
->size
- offset
))
133 map
= pipe
->winsys
->buffer_map(pipe
->winsys
, st_obj
->buffer
,
134 PIPE_BUFFER_USAGE_CPU_READ
);
135 memcpy(data
, map
+ offset
, size
);
136 pipe
->winsys
->buffer_unmap(pipe
->winsys
, st_obj
->buffer
);
141 * Allocate space for and store data in a buffer object. Any data that was
142 * previously stored in the buffer object is lost. If data is NULL,
143 * memory will be allocated, but no copy will occur.
144 * Called via glBufferDataARB().
147 st_bufferobj_data(GLcontext
*ctx
,
152 struct gl_buffer_object
*obj
)
154 struct st_context
*st
= st_context(ctx
);
155 struct pipe_context
*pipe
= st
->pipe
;
156 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
157 unsigned buffer_usage
;
159 st_obj
->Base
.Size
= size
;
160 st_obj
->Base
.Usage
= usage
;
163 case GL_PIXEL_PACK_BUFFER_ARB
:
164 case GL_PIXEL_UNPACK_BUFFER_ARB
:
165 buffer_usage
= PIPE_BUFFER_USAGE_PIXEL
;
167 case GL_ARRAY_BUFFER_ARB
:
168 buffer_usage
= PIPE_BUFFER_USAGE_VERTEX
;
170 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
171 buffer_usage
= PIPE_BUFFER_USAGE_INDEX
;
177 pipe_buffer_reference( pipe
->winsys
, &st_obj
->buffer
, NULL
);
179 st_obj
->buffer
= pipe
->winsys
->buffer_create( pipe
->winsys
, 32, buffer_usage
,
185 st_bufferobj_subdata(ctx
, target
, 0, size
, data
, obj
);
190 * Called via glMapBufferARB().
193 st_bufferobj_map(GLcontext
*ctx
, GLenum target
, GLenum access
,
194 struct gl_buffer_object
*obj
)
196 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
197 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
202 flags
= PIPE_BUFFER_USAGE_CPU_WRITE
;
205 flags
= PIPE_BUFFER_USAGE_CPU_READ
;
210 flags
= PIPE_BUFFER_USAGE_CPU_READ
| PIPE_BUFFER_USAGE_CPU_WRITE
;
214 obj
->Pointer
= pipe
->winsys
->buffer_map(pipe
->winsys
, st_obj
->buffer
, flags
);
220 * Called via glMapBufferARB().
223 st_bufferobj_unmap(GLcontext
*ctx
, GLenum target
, struct gl_buffer_object
*obj
)
225 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
226 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
228 pipe
->winsys
->buffer_unmap(pipe
->winsys
, st_obj
->buffer
);
235 st_init_bufferobject_functions(struct dd_function_table
*functions
)
237 functions
->NewBufferObject
= st_bufferobj_alloc
;
238 functions
->DeleteBuffer
= st_bufferobj_free
;
239 functions
->BufferData
= st_bufferobj_data
;
240 functions
->BufferSubData
= st_bufferobj_subdata
;
241 functions
->GetBufferSubData
= st_bufferobj_get_subdata
;
242 functions
->MapBuffer
= st_bufferobj_map
;
243 functions
->UnmapBuffer
= st_bufferobj_unmap
;