1 /**************************************************************************
3 * Copyright 2003 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 "intel_context.h"
34 #include "intel_buffer_objects.h"
35 #include "intel_batchbuffer.h"
36 #include "intel_regions.h"
39 intel_bufferobj_unmap(GLcontext
* ctx
,
40 GLenum target
, struct gl_buffer_object
*obj
);
42 /** Allocates a new dri_bo to store the data for the buffer object. */
44 intel_bufferobj_alloc_buffer(struct intel_context
*intel
,
45 struct intel_buffer_object
*intel_obj
)
47 intel_obj
->buffer
= dri_bo_alloc(intel
->bufmgr
, "bufferobj",
48 intel_obj
->Base
.Size
, 64);
52 * There is some duplication between mesa's bufferobjects and our
53 * bufmgr buffers. Both have an integer handle and a hashtable to
54 * lookup an opaque structure. It would be nice if the handles and
55 * internal structure where somehow shared.
57 static struct gl_buffer_object
*
58 intel_bufferobj_alloc(GLcontext
* ctx
, GLuint name
, GLenum target
)
60 struct intel_buffer_object
*obj
= CALLOC_STRUCT(intel_buffer_object
);
62 _mesa_initialize_buffer_object(&obj
->Base
, name
, target
);
69 /* Break the COW tie to the region. The region gets to keep the data.
72 intel_bufferobj_release_region(struct intel_context
*intel
,
73 struct intel_buffer_object
*intel_obj
)
75 assert(intel_obj
->region
->buffer
== intel_obj
->buffer
);
76 intel_obj
->region
->pbo
= NULL
;
77 intel_obj
->region
= NULL
;
79 dri_bo_unreference(intel_obj
->buffer
);
80 intel_obj
->buffer
= NULL
;
83 /* Break the COW tie to the region. Both the pbo and the region end
84 * up with a copy of the data.
87 intel_bufferobj_cow(struct intel_context
*intel
,
88 struct intel_buffer_object
*intel_obj
)
90 assert(intel_obj
->region
);
91 intel_region_cow(intel
, intel_obj
->region
);
96 * Deallocate/free a vertex/pixel buffer object.
97 * Called via glDeleteBuffersARB().
100 intel_bufferobj_free(GLcontext
* ctx
, struct gl_buffer_object
*obj
)
102 struct intel_context
*intel
= intel_context(ctx
);
103 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
107 /* Buffer objects are automatically unmapped when deleting according
108 * to the spec, but Mesa doesn't do UnmapBuffer for us at context destroy
109 * (though it does if you call glDeleteBuffers)
112 intel_bufferobj_unmap(ctx
, 0, obj
);
114 _mesa_free(intel_obj
->sys_buffer
);
115 if (intel_obj
->region
) {
116 intel_bufferobj_release_region(intel
, intel_obj
);
118 else if (intel_obj
->buffer
) {
119 dri_bo_unreference(intel_obj
->buffer
);
122 _mesa_free(intel_obj
);
128 * Allocate space for and store data in a buffer object. Any data that was
129 * previously stored in the buffer object is lost. If data is NULL,
130 * memory will be allocated, but no copy will occur.
131 * Called via glBufferDataARB().
134 intel_bufferobj_data(GLcontext
* ctx
,
138 GLenum usage
, struct gl_buffer_object
*obj
)
140 struct intel_context
*intel
= intel_context(ctx
);
141 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
143 intel_obj
->Base
.Size
= size
;
144 intel_obj
->Base
.Usage
= usage
;
146 assert(!obj
->Pointer
); /* Mesa should have unmapped it */
148 if (intel_obj
->region
)
149 intel_bufferobj_release_region(intel
, intel_obj
);
151 if (intel_obj
->buffer
!= NULL
) {
152 dri_bo_unreference(intel_obj
->buffer
);
153 intel_obj
->buffer
= NULL
;
155 _mesa_free(intel_obj
->sys_buffer
);
156 intel_obj
->sys_buffer
= NULL
;
160 /* On pre-965, stick VBOs in system memory, as we're always doing swtnl
161 * with their contents anyway.
163 if (target
== GL_ARRAY_BUFFER
|| target
== GL_ELEMENT_ARRAY_BUFFER
) {
164 intel_obj
->sys_buffer
= _mesa_malloc(size
);
165 if (intel_obj
->sys_buffer
!= NULL
) {
167 memcpy(intel_obj
->sys_buffer
, data
, size
);
172 intel_bufferobj_alloc_buffer(intel
, intel_obj
);
175 dri_bo_subdata(intel_obj
->buffer
, 0, size
, data
);
181 * Replace data in a subrange of buffer object. If the data range
182 * specified by size + offset extends beyond the end of the buffer or
183 * if data is NULL, no copy is performed.
184 * Called via glBufferSubDataARB().
187 intel_bufferobj_subdata(GLcontext
* ctx
,
191 const GLvoid
* data
, struct gl_buffer_object
*obj
)
193 struct intel_context
*intel
= intel_context(ctx
);
194 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
198 if (intel_obj
->region
)
199 intel_bufferobj_cow(intel
, intel_obj
);
201 if (intel_obj
->sys_buffer
)
202 memcpy((char *)intel_obj
->sys_buffer
+ offset
, data
, size
);
204 dri_bo_subdata(intel_obj
->buffer
, offset
, size
, data
);
209 * Called via glGetBufferSubDataARB().
212 intel_bufferobj_get_subdata(GLcontext
* ctx
,
216 GLvoid
* data
, struct gl_buffer_object
*obj
)
218 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
221 dri_bo_get_subdata(intel_obj
->buffer
, offset
, size
, data
);
227 * Called via glMapBufferARB().
230 intel_bufferobj_map(GLcontext
* ctx
,
232 GLenum access
, struct gl_buffer_object
*obj
)
234 struct intel_context
*intel
= intel_context(ctx
);
235 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
236 GLboolean read_only
= (access
== GL_READ_ONLY_ARB
);
237 GLboolean write_only
= (access
== GL_WRITE_ONLY_ARB
);
241 if (intel_obj
->sys_buffer
) {
242 obj
->Pointer
= intel_obj
->sys_buffer
;
246 if (intel_obj
->region
)
247 intel_bufferobj_cow(intel
, intel_obj
);
249 if (intel_obj
->buffer
== NULL
) {
254 if (write_only
&& intel
->intelScreen
->kernel_exec_fencing
) {
255 drm_intel_gem_bo_map_gtt(intel_obj
->buffer
);
256 intel_obj
->mapped_gtt
= GL_TRUE
;
258 drm_intel_bo_map(intel_obj
->buffer
, !read_only
);
259 intel_obj
->mapped_gtt
= GL_FALSE
;
262 obj
->Pointer
= intel_obj
->buffer
->virtual;
268 * Called via glMapBufferARB().
271 intel_bufferobj_unmap(GLcontext
* ctx
,
272 GLenum target
, struct gl_buffer_object
*obj
)
274 struct intel_buffer_object
*intel_obj
= intel_buffer_object(obj
);
277 if (intel_obj
->buffer
!= NULL
) {
278 assert(obj
->Pointer
);
279 if (intel_obj
->mapped_gtt
) {
280 drm_intel_gem_bo_unmap_gtt(intel_obj
->buffer
);
282 drm_intel_bo_unmap(intel_obj
->buffer
);
290 intel_bufferobj_buffer(struct intel_context
*intel
,
291 struct intel_buffer_object
*intel_obj
, GLuint flag
)
293 if (intel_obj
->region
) {
294 if (flag
== INTEL_WRITE_PART
)
295 intel_bufferobj_cow(intel
, intel_obj
);
296 else if (flag
== INTEL_WRITE_FULL
) {
297 intel_bufferobj_release_region(intel
, intel_obj
);
298 intel_bufferobj_alloc_buffer(intel
, intel_obj
);
302 if (intel_obj
->buffer
== NULL
) {
303 <<<<<<< HEAD
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
304 void *sys_buffer
= intel_obj
->sys_buffer
;
306 /* only one of buffer and sys_buffer could be non-NULL */
308 >>>>>>> mesa_7_5_branch
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
309 intel_bufferobj_alloc_buffer(intel
, intel_obj
);
310 <<<<<<< HEAD
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
311 intel_obj
->sys_buffer
= NULL
;
314 >>>>>>> mesa_7_5_branch
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
315 intel_bufferobj_subdata(&intel
->ctx
,
318 intel_obj
->Base
.Size
,
319 <<<<<<< HEAD
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
322 intel_obj
->sys_buffer
,
323 >>>>>>> mesa_7_5_branch
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
325 <<<<<<< HEAD
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
326 _mesa_free(sys_buffer
);
328 _mesa_free(intel_obj
->sys_buffer
);
329 intel_obj
->sys_buffer
= NULL
;
330 >>>>>>> mesa_7_5_branch
:src
/mesa
/drivers
/dri
/intel
/intel_buffer_objects
.c
333 return intel_obj
->buffer
;
337 intelInitBufferObjectFuncs(struct dd_function_table
*functions
)
339 functions
->NewBufferObject
= intel_bufferobj_alloc
;
340 functions
->DeleteBuffer
= intel_bufferobj_free
;
341 functions
->BufferData
= intel_bufferobj_data
;
342 functions
->BufferSubData
= intel_bufferobj_subdata
;
343 functions
->GetBufferSubData
= intel_bufferobj_get_subdata
;
344 functions
->MapBuffer
= intel_bufferobj_map
;
345 functions
->UnmapBuffer
= intel_bufferobj_unmap
;