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_inlines.h"
42 /* Pixel buffers and Vertex/index buffers are handled through these
43 * mesa callbacks. Framebuffer/Renderbuffer objects are
44 * created/managed elsewhere.
50 * There is some duplication between mesa's bufferobjects and our
51 * bufmgr buffers. Both have an integer handle and a hashtable to
52 * lookup an opaque structure. It would be nice if the handles and
53 * internal structure where somehow shared.
55 static struct gl_buffer_object
*
56 st_bufferobj_alloc(GLcontext
*ctx
, GLuint name
, GLenum target
)
58 struct st_buffer_object
*st_obj
= CALLOC_STRUCT(st_buffer_object
);
63 _mesa_initialize_buffer_object(&st_obj
->Base
, name
, target
);
71 * Deallocate/free a vertex/pixel buffer object.
72 * Called via glDeleteBuffersARB().
75 st_bufferobj_free(GLcontext
*ctx
, struct gl_buffer_object
*obj
)
77 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
78 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
81 pipe_buffer_reference(pipe
->screen
, &st_obj
->buffer
, NULL
);
89 * Replace data in a subrange of buffer object. If the data range
90 * specified by size + offset extends beyond the end of the buffer or
91 * if data is NULL, no copy is performed.
92 * Called via glBufferSubDataARB().
95 st_bufferobj_subdata(GLcontext
*ctx
,
99 const GLvoid
* data
, struct gl_buffer_object
*obj
)
101 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
102 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
105 if (offset
>= st_obj
->size
|| size
> (st_obj
->size
- offset
))
108 map
= pipe_buffer_map(pipe
->screen
, st_obj
->buffer
, PIPE_BUFFER_USAGE_CPU_WRITE
);
109 memcpy(map
+ offset
, data
, size
);
110 pipe_buffer_unmap(pipe
->screen
, st_obj
->buffer
);
115 * Called via glGetBufferSubDataARB().
118 st_bufferobj_get_subdata(GLcontext
*ctx
,
122 GLvoid
* data
, struct gl_buffer_object
*obj
)
124 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
125 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
128 if (offset
>= st_obj
->size
|| size
> (st_obj
->size
- offset
))
131 map
= pipe_buffer_map(pipe
->screen
, st_obj
->buffer
, PIPE_BUFFER_USAGE_CPU_READ
);
132 memcpy(data
, map
+ offset
, size
);
133 pipe_buffer_unmap(pipe
->screen
, st_obj
->buffer
);
138 * Allocate space for and store data in a buffer object. Any data that was
139 * previously stored in the buffer object is lost. If data is NULL,
140 * memory will be allocated, but no copy will occur.
141 * Called via glBufferDataARB().
144 st_bufferobj_data(GLcontext
*ctx
,
149 struct gl_buffer_object
*obj
)
151 struct st_context
*st
= st_context(ctx
);
152 struct pipe_context
*pipe
= st
->pipe
;
153 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
154 unsigned buffer_usage
;
156 st_obj
->Base
.Size
= size
;
157 st_obj
->Base
.Usage
= usage
;
160 case GL_PIXEL_PACK_BUFFER_ARB
:
161 case GL_PIXEL_UNPACK_BUFFER_ARB
:
162 buffer_usage
= PIPE_BUFFER_USAGE_PIXEL
;
164 case GL_ARRAY_BUFFER_ARB
:
165 buffer_usage
= PIPE_BUFFER_USAGE_VERTEX
;
167 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
168 buffer_usage
= PIPE_BUFFER_USAGE_INDEX
;
174 pipe_buffer_reference( pipe
->screen
, &st_obj
->buffer
, NULL
);
176 st_obj
->buffer
= pipe_buffer_create( pipe
->screen
, 32, buffer_usage
, size
);
181 st_bufferobj_subdata(ctx
, target
, 0, size
, data
, obj
);
186 * Called via glMapBufferARB().
189 st_bufferobj_map(GLcontext
*ctx
, GLenum target
, GLenum access
,
190 struct gl_buffer_object
*obj
)
192 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
193 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
198 flags
= PIPE_BUFFER_USAGE_CPU_WRITE
;
201 flags
= PIPE_BUFFER_USAGE_CPU_READ
;
206 flags
= PIPE_BUFFER_USAGE_CPU_READ
| PIPE_BUFFER_USAGE_CPU_WRITE
;
210 obj
->Pointer
= pipe_buffer_map(pipe
->screen
, st_obj
->buffer
, flags
);
216 * Called via glMapBufferARB().
219 st_bufferobj_unmap(GLcontext
*ctx
, GLenum target
, struct gl_buffer_object
*obj
)
221 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
222 struct st_buffer_object
*st_obj
= st_buffer_object(obj
);
224 pipe_buffer_unmap(pipe
->screen
, st_obj
->buffer
);
231 st_init_bufferobject_functions(struct dd_function_table
*functions
)
233 functions
->NewBufferObject
= st_bufferobj_alloc
;
234 functions
->DeleteBuffer
= st_bufferobj_free
;
235 functions
->BufferData
= st_bufferobj_data
;
236 functions
->BufferSubData
= st_bufferobj_subdata
;
237 functions
->GetBufferSubData
= st_bufferobj_get_subdata
;
238 functions
->MapBuffer
= st_bufferobj_map
;
239 functions
->UnmapBuffer
= st_bufferobj_unmap
;