1 /**************************************************************************
3 * Copyright 2006 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 * Keith Whitwell <keith@tungstengraphics.com>
30 * Michel Dänzer <michel@tungstengraphics.com>
33 #include "pipe/p_state.h"
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "util/u_inlines.h"
37 #include "util/u_format.h"
38 #include "util/u_math.h"
39 #include "util/u_memory.h"
41 #include "i915_context.h"
42 #include "i915_resource.h"
43 #include "i915_screen.h"
44 #include "i915_winsys.h"
48 * Helper function and arrays
53 * Initial offset for Cube map.
55 static const int initial_offsets
[6][2] = {
65 * Step offsets for Cube map.
67 static const int step_offsets
[6][2] = {
76 /* XXX really need twice the size if x is already pot?
77 Otherwise just use util_next_power_of_two?
80 power_of_two(unsigned x
)
89 * More advanced helper funcs
94 i915_texture_set_level_info(struct i915_texture
*tex
,
97 unsigned w
, unsigned h
, unsigned d
)
99 assert(level
< Elements(tex
->nr_images
));
101 tex
->nr_images
[level
] = nr_images
;
104 DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
105 level, w, h, d, x, y, tex->level_offset[level]);
108 /* Not sure when this would happen, but anyway:
110 if (tex
->image_offset
[level
]) {
111 FREE(tex
->image_offset
[level
]);
112 tex
->image_offset
[level
] = NULL
;
116 assert(!tex
->image_offset
[level
]);
118 tex
->image_offset
[level
] = (unsigned *) MALLOC(nr_images
* sizeof(unsigned));
119 tex
->image_offset
[level
][0] = 0;
123 i915_texture_set_image_offset(struct i915_texture
*tex
,
124 unsigned level
, unsigned img
, unsigned x
, unsigned y
)
126 if (img
== 0 && level
== 0)
127 assert(x
== 0 && y
== 0);
129 assert(img
< tex
->nr_images
[level
]);
131 tex
->image_offset
[level
][img
] = y
* tex
->stride
+ x
* util_format_get_blocksize(tex
->b
.b
.format
);
134 printf("%s level %d img %d pos %d,%d image_offset %x\n",
135 __FUNCTION__, level, img, x, y, tex->image_offset[level][img]);
141 * Shared layout functions
146 * Special case to deal with scanout textures.
149 i9x5_scanout_layout(struct i915_texture
*tex
)
151 struct pipe_resource
*pt
= &tex
->b
.b
;
153 if (pt
->last_level
> 0 || util_format_get_blocksize(pt
->format
) != 4)
156 i915_texture_set_level_info(tex
, 0, 1,
160 i915_texture_set_image_offset(tex
, 0, 0, 0, 0);
162 if (pt
->width0
>= 240) {
163 tex
->stride
= power_of_two(util_format_get_stride(pt
->format
, pt
->width0
));
164 tex
->total_nblocksy
= align(util_format_get_nblocksy(pt
->format
, pt
->height0
), 8);
165 tex
->hw_tiled
= I915_TILE_X
;
166 } else if (pt
->width0
== 64 && pt
->height0
== 64) {
167 tex
->stride
= power_of_two(util_format_get_stride(pt
->format
, pt
->width0
));
168 tex
->total_nblocksy
= align(util_format_get_nblocksy(pt
->format
, pt
->height0
), 8);
173 debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__
,
174 pt
->width0
, pt
->height0
, util_format_get_blocksize(pt
->format
),
175 tex
->stride
, tex
->total_nblocksy
, tex
->stride
* tex
->total_nblocksy
);
181 * Special case to deal with shared textures.
184 i9x5_display_target_layout(struct i915_texture
*tex
)
186 struct pipe_resource
*pt
= &tex
->b
.b
;
188 if (pt
->last_level
> 0 || util_format_get_blocksize(pt
->format
) != 4)
191 /* fallback to normal textures for small textures */
192 if (pt
->width0
< 240)
195 i915_texture_set_level_info(tex
, 0, 1,
199 i915_texture_set_image_offset(tex
, 0, 0, 0, 0);
201 tex
->stride
= power_of_two(util_format_get_stride(pt
->format
, pt
->width0
));
202 tex
->total_nblocksy
= align(util_format_get_nblocksy(pt
->format
, pt
->height0
), 8);
203 tex
->hw_tiled
= I915_TILE_X
;
205 debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__
,
206 pt
->width0
, pt
->height0
, util_format_get_blocksize(pt
->format
),
207 tex
->stride
, tex
->total_nblocksy
, tex
->stride
* tex
->total_nblocksy
);
214 * i915 layout functions
219 i915_texture_layout_2d(struct i915_texture
*tex
)
221 struct pipe_resource
*pt
= &tex
->b
.b
;
223 unsigned width
= pt
->width0
;
224 unsigned height
= pt
->height0
;
225 unsigned nblocksy
= util_format_get_nblocksy(pt
->format
, pt
->width0
);
227 /* used for scanouts that need special layouts */
228 if (pt
->bind
& PIPE_BIND_SCANOUT
)
229 if (i9x5_scanout_layout(tex
))
232 /* shared buffers needs to be compatible with X servers
234 * XXX: need a better name than shared for this if it is to be part
235 * of core gallium, and probably move the flag to resource.flags,
236 * rather than bindings.
238 if (pt
->bind
& (PIPE_BIND_SHARED
| PIPE_BIND_DISPLAY_TARGET
))
239 if (i9x5_display_target_layout(tex
))
242 tex
->stride
= align(util_format_get_stride(pt
->format
, pt
->width0
), 4);
243 tex
->total_nblocksy
= 0;
245 for (level
= 0; level
<= pt
->last_level
; level
++) {
246 i915_texture_set_level_info(tex
, level
, 1, width
, height
, 1);
247 i915_texture_set_image_offset(tex
, level
, 0, 0, tex
->total_nblocksy
);
249 nblocksy
= align(MAX2(2, nblocksy
), 2);
251 tex
->total_nblocksy
+= nblocksy
;
253 width
= u_minify(width
, 1);
254 height
= u_minify(height
, 1);
255 nblocksy
= util_format_get_nblocksy(pt
->format
, height
);
260 i915_texture_layout_3d(struct i915_texture
*tex
)
262 struct pipe_resource
*pt
= &tex
->b
.b
;
265 unsigned width
= pt
->width0
;
266 unsigned height
= pt
->height0
;
267 unsigned depth
= pt
->depth0
;
268 unsigned nblocksy
= util_format_get_nblocksy(pt
->format
, pt
->height0
);
269 unsigned stack_nblocksy
= 0;
271 /* Calculate the size of a single slice.
273 tex
->stride
= align(util_format_get_stride(pt
->format
, pt
->width0
), 4);
275 /* XXX: hardware expects/requires 9 levels at minimum.
277 for (level
= 0; level
<= MAX2(8, pt
->last_level
); level
++) {
278 i915_texture_set_level_info(tex
, level
, depth
, width
, height
, depth
);
280 stack_nblocksy
+= MAX2(2, nblocksy
);
282 width
= u_minify(width
, 1);
283 height
= u_minify(height
, 1);
284 nblocksy
= util_format_get_nblocksy(pt
->format
, height
);
287 /* Fixup depth image_offsets:
289 for (level
= 0; level
<= pt
->last_level
; level
++) {
291 for (i
= 0; i
< depth
; i
++)
292 i915_texture_set_image_offset(tex
, level
, i
, 0, i
* stack_nblocksy
);
294 depth
= u_minify(depth
, 1);
297 /* Multiply slice size by texture depth for total size. It's
298 * remarkable how wasteful of memory the i915 texture layouts
299 * are. They are largely fixed in the i945.
301 tex
->total_nblocksy
= stack_nblocksy
* pt
->depth0
;
305 i915_texture_layout_cube(struct i915_texture
*tex
)
307 struct pipe_resource
*pt
= &tex
->b
.b
;
308 unsigned width
= pt
->width0
, height
= pt
->height0
;
309 const unsigned nblocks
= util_format_get_nblocksx(pt
->format
, pt
->width0
);
313 assert(width
== height
); /* cubemap images are square */
315 /* double pitch for cube layouts */
316 tex
->stride
= align(nblocks
* util_format_get_blocksize(pt
->format
) * 2, 4);
317 tex
->total_nblocksy
= nblocks
* 4;
319 for (level
= 0; level
<= pt
->last_level
; level
++) {
320 i915_texture_set_level_info(tex
, level
, 6, width
, height
, 1);
325 for (face
= 0; face
< 6; face
++) {
326 unsigned x
= initial_offsets
[face
][0] * nblocks
;
327 unsigned y
= initial_offsets
[face
][1] * nblocks
;
328 unsigned d
= nblocks
;
330 for (level
= 0; level
<= pt
->last_level
; level
++) {
331 i915_texture_set_image_offset(tex
, level
, face
, x
, y
);
333 x
+= step_offsets
[face
][0] * d
;
334 y
+= step_offsets
[face
][1] * d
;
340 i915_texture_layout(struct i915_texture
* tex
)
342 struct pipe_resource
*pt
= &tex
->b
.b
;
344 switch (pt
->target
) {
345 case PIPE_TEXTURE_1D
:
346 case PIPE_TEXTURE_2D
:
347 i915_texture_layout_2d(tex
);
349 case PIPE_TEXTURE_3D
:
350 i915_texture_layout_3d(tex
);
352 case PIPE_TEXTURE_CUBE
:
353 i915_texture_layout_cube(tex
);
365 * i945 layout functions
370 i945_texture_layout_2d(struct i915_texture
*tex
)
372 struct pipe_resource
*pt
= &tex
->b
.b
;
373 const int align_x
= 2, align_y
= 4;
377 unsigned width
= pt
->width0
;
378 unsigned height
= pt
->height0
;
379 unsigned nblocksx
= util_format_get_nblocksx(pt
->format
, pt
->width0
);
380 unsigned nblocksy
= util_format_get_nblocksy(pt
->format
, pt
->height0
);
382 /* used for scanouts that need special layouts */
383 if (tex
->b
.b
.bind
& PIPE_BIND_SCANOUT
)
384 if (i9x5_scanout_layout(tex
))
387 /* shared buffers needs to be compatible with X servers */
388 if (tex
->b
.b
.bind
& (PIPE_BIND_SHARED
| PIPE_BIND_DISPLAY_TARGET
))
389 if (i9x5_display_target_layout(tex
))
392 tex
->stride
= align(util_format_get_stride(pt
->format
, pt
->width0
), 4);
394 /* May need to adjust pitch to accomodate the placement of
395 * the 2nd mipmap level. This occurs when the alignment
396 * constraints of mipmap placement push the right edge of the
397 * 2nd mipmap level out past the width of its parent.
399 if (pt
->last_level
> 0) {
400 unsigned mip1_nblocksx
401 = align(util_format_get_nblocksx(pt
->format
, u_minify(width
, 1)), align_x
)
402 + util_format_get_nblocksx(pt
->format
, u_minify(width
, 2));
404 if (mip1_nblocksx
> nblocksx
)
405 tex
->stride
= mip1_nblocksx
* util_format_get_blocksize(pt
->format
);
408 /* Pitch must be a whole number of dwords
410 tex
->stride
= align(tex
->stride
, 64);
411 tex
->total_nblocksy
= 0;
413 for (level
= 0; level
<= pt
->last_level
; level
++) {
414 i915_texture_set_level_info(tex
, level
, 1, width
, height
, 1);
415 i915_texture_set_image_offset(tex
, level
, 0, x
, y
);
417 nblocksy
= align(nblocksy
, align_y
);
419 /* Because the images are packed better, the final offset
420 * might not be the maximal one:
422 tex
->total_nblocksy
= MAX2(tex
->total_nblocksy
, y
+ nblocksy
);
424 /* Layout_below: step right after second mipmap level.
427 x
+= align(nblocksx
, align_x
);
432 width
= u_minify(width
, 1);
433 height
= u_minify(height
, 1);
434 nblocksx
= util_format_get_nblocksx(pt
->format
, width
);
435 nblocksy
= util_format_get_nblocksy(pt
->format
, height
);
440 i945_texture_layout_3d(struct i915_texture
*tex
)
442 struct pipe_resource
*pt
= &tex
->b
.b
;
443 unsigned width
= pt
->width0
;
444 unsigned height
= pt
->height0
;
445 unsigned depth
= pt
->depth0
;
446 unsigned nblocksy
= util_format_get_nblocksy(pt
->format
, pt
->width0
);
447 unsigned pack_x_pitch
, pack_x_nr
;
448 unsigned pack_y_pitch
;
451 tex
->stride
= align(util_format_get_stride(pt
->format
, pt
->width0
), 4);
452 tex
->total_nblocksy
= 0;
454 pack_y_pitch
= MAX2(nblocksy
, 2);
455 pack_x_pitch
= tex
->stride
/ util_format_get_blocksize(pt
->format
);
458 for (level
= 0; level
<= pt
->last_level
; level
++) {
463 i915_texture_set_level_info(tex
, level
, depth
, width
, height
, depth
);
465 for (q
= 0; q
< depth
;) {
466 for (j
= 0; j
< pack_x_nr
&& q
< depth
; j
++, q
++) {
467 i915_texture_set_image_offset(tex
, level
, q
, x
, y
+ tex
->total_nblocksy
);
475 tex
->total_nblocksy
+= y
;
477 if (pack_x_pitch
> 4) {
480 assert(pack_x_pitch
* pack_x_nr
* util_format_get_blocksize(pt
->format
) <= tex
->stride
);
483 if (pack_y_pitch
> 2) {
487 width
= u_minify(width
, 1);
488 height
= u_minify(height
, 1);
489 depth
= u_minify(depth
, 1);
490 nblocksy
= util_format_get_nblocksy(pt
->format
, height
);
495 i945_texture_layout_cube(struct i915_texture
*tex
)
497 struct pipe_resource
*pt
= &tex
->b
.b
;
500 const unsigned nblocks
= util_format_get_nblocksx(pt
->format
, pt
->width0
);
502 unsigned width
= pt
->width0
;
503 unsigned height
= pt
->height0
;
506 printf("%s %i, %i\n", __FUNCTION__, pt->width0, pt->height0);
509 assert(width
== height
); /* cubemap images are square */
512 * XXX Should only be used for compressed formats. But lets
513 * keep this code active just in case.
515 * Depending on the size of the largest images, pitch can be
516 * determined either by the old-style packing of cubemap faces,
517 * or the final row of 4x4, 2x2 and 1x1 faces below this.
520 tex
->stride
= align(nblocks
* util_format_get_blocksize(pt
->format
) * 2, 4);
522 tex
->stride
= 14 * 8 * util_format_get_blocksize(pt
->format
);
524 tex
->total_nblocksy
= nblocks
* 4;
526 /* Set all the levels to effectively occupy the whole rectangular region.
528 for (level
= 0; level
<= pt
->last_level
; level
++) {
529 i915_texture_set_level_info(tex
, level
, 6, width
, height
, 1);
534 for (face
= 0; face
< 6; face
++) {
535 unsigned x
= initial_offsets
[face
][0] * nblocks
;
536 unsigned y
= initial_offsets
[face
][1] * nblocks
;
537 unsigned d
= nblocks
;
539 #if 0 /* Fix and enable this code for compressed formats */
540 if (nblocks
== 4 && face
>= 4) {
541 y
= tex
->total_height
- 4;
544 else if (nblocks
< 4 && (face
> 0)) {
545 y
= tex
->total_height
- 4;
550 for (level
= 0; level
<= pt
->last_level
; level
++) {
551 i915_texture_set_image_offset(tex
, level
, face
, x
, y
);
555 #if 0 /* Fix and enable this code for compressed formats */
559 case PIPE_TEX_FACE_POS_X
:
560 case PIPE_TEX_FACE_NEG_X
:
561 x
+= step_offsets
[face
][0] * d
;
562 y
+= step_offsets
[face
][1] * d
;
564 case PIPE_TEX_FACE_POS_Y
:
565 case PIPE_TEX_FACE_NEG_Y
:
569 case PIPE_TEX_FACE_POS_Z
:
570 case PIPE_TEX_FACE_NEG_Z
:
571 y
= tex
->total_height
- 4;
576 y
= tex
->total_height
- 4;
585 x
+= step_offsets
[face
][0] * d
;
586 y
+= step_offsets
[face
][1] * d
;
596 i945_texture_layout(struct i915_texture
* tex
)
598 struct pipe_resource
*pt
= &tex
->b
.b
;
600 switch (pt
->target
) {
601 case PIPE_TEXTURE_1D
:
602 case PIPE_TEXTURE_2D
:
603 i945_texture_layout_2d(tex
);
605 case PIPE_TEXTURE_3D
:
606 i945_texture_layout_3d(tex
);
608 case PIPE_TEXTURE_CUBE
:
609 i945_texture_layout_cube(tex
);
622 * Screen texture functions
628 i915_texture_get_handle(struct pipe_screen
* screen
,
629 struct pipe_resource
*texture
,
630 struct winsys_handle
*whandle
)
632 struct i915_screen
*is
= i915_screen(screen
);
633 struct i915_texture
*tex
= i915_texture(texture
);
634 struct i915_winsys
*iws
= is
->iws
;
636 return iws
->buffer_get_handle(iws
, tex
->buffer
, whandle
, tex
->stride
);
641 i915_texture_destroy(struct pipe_screen
*screen
,
642 struct pipe_resource
*pt
)
644 struct i915_texture
*tex
= i915_texture(pt
);
645 struct i915_winsys
*iws
= i915_screen(screen
)->iws
;
649 DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
652 iws
->buffer_destroy(iws
, tex
->buffer
);
654 for (i
= 0; i
< Elements(tex
->image_offset
); i
++)
655 if (tex
->image_offset
[i
])
656 FREE(tex
->image_offset
[i
]);
661 static struct pipe_transfer
*
662 i915_texture_get_transfer(struct pipe_context
*context
,
663 struct pipe_resource
*resource
,
664 struct pipe_subresource sr
,
666 const struct pipe_box
*box
)
668 struct i915_texture
*tex
= i915_texture(resource
);
669 struct pipe_transfer
*transfer
= CALLOC_STRUCT(pipe_transfer
);
670 if (transfer
== NULL
)
673 transfer
->resource
= resource
;
675 transfer
->usage
= usage
;
676 transfer
->box
= *box
;
677 transfer
->stride
= tex
->stride
;
684 i915_texture_transfer_map(struct pipe_context
*pipe
,
685 struct pipe_transfer
*transfer
)
687 struct pipe_resource
*resource
= transfer
->resource
;
688 struct i915_texture
*tex
= i915_texture(resource
);
689 struct i915_winsys
*iws
= i915_screen(pipe
->screen
)->iws
;
690 struct pipe_subresource sr
= transfer
->sr
;
691 struct pipe_box
*box
= &transfer
->box
;
692 enum pipe_format format
= resource
->format
;
696 if (resource
->target
== PIPE_TEXTURE_CUBE
) {
697 offset
= tex
->image_offset
[sr
.level
][sr
.face
];
698 } else if (resource
->target
== PIPE_TEXTURE_3D
) {
699 offset
= tex
->image_offset
[sr
.level
][box
->z
];
701 offset
= tex
->image_offset
[sr
.level
][0];
702 assert(sr
.face
== 0);
706 map
= iws
->buffer_map(iws
, tex
->buffer
,
707 (transfer
->usage
& PIPE_TRANSFER_WRITE
) ? TRUE
: FALSE
);
711 return map
+ offset
+
712 box
->y
/ util_format_get_blockheight(format
) * transfer
->stride
+
713 box
->x
/ util_format_get_blockwidth(format
) * util_format_get_blocksize(format
);
717 i915_texture_transfer_unmap(struct pipe_context
*pipe
,
718 struct pipe_transfer
*transfer
)
720 struct i915_texture
*tex
= i915_texture(transfer
->resource
);
721 struct i915_winsys
*iws
= i915_screen(tex
->b
.b
.screen
)->iws
;
722 iws
->buffer_unmap(iws
, tex
->buffer
);
727 struct u_resource_vtbl i915_texture_vtbl
=
729 i915_texture_get_handle
, /* get_handle */
730 i915_texture_destroy
, /* resource_destroy */
731 NULL
, /* is_resource_referenced */
732 i915_texture_get_transfer
, /* get_transfer */
733 u_default_transfer_destroy
, /* transfer_destroy */
734 i915_texture_transfer_map
, /* transfer_map */
735 u_default_transfer_flush_region
, /* transfer_flush_region */
736 i915_texture_transfer_unmap
, /* transfer_unmap */
737 u_default_transfer_inline_write
/* transfer_inline_write */
743 struct pipe_resource
*
744 i915_texture_create(struct pipe_screen
*screen
,
745 const struct pipe_resource
*template)
747 struct i915_screen
*is
= i915_screen(screen
);
748 struct i915_winsys
*iws
= is
->iws
;
749 struct i915_texture
*tex
= CALLOC_STRUCT(i915_texture
);
751 unsigned buf_usage
= 0;
756 tex
->b
.b
= *template;
757 tex
->b
.vtbl
= &i915_texture_vtbl
;
758 pipe_reference_init(&tex
->b
.b
.reference
, 1);
759 tex
->b
.b
.screen
= screen
;
762 if (!i945_texture_layout(tex
))
765 if (!i915_texture_layout(tex
))
769 tex_size
= tex
->stride
* tex
->total_nblocksy
;
771 /* for scanouts and cursors, cursors arn't scanouts */
773 /* XXX: use a custom flag for cursors, don't rely on magically
774 * guessing that this is Xorg asking for a cursor
776 if ((template->bind
& PIPE_BIND_SCANOUT
) && template->width0
!= 64)
777 buf_usage
= I915_NEW_SCANOUT
;
779 buf_usage
= I915_NEW_TEXTURE
;
781 tex
->buffer
= iws
->buffer_create(iws
, tex_size
, 64, buf_usage
);
785 /* setup any hw fences */
787 assert(tex
->sw_tiled
== I915_TILE_NONE
);
788 iws
->buffer_set_fence_reg(iws
, tex
->buffer
, tex
->stride
, tex
->hw_tiled
);
793 void *ptr
= ws
->buffer_map(ws
, tex
->buffer
,
794 PIPE_BUFFER_USAGE_CPU_WRITE
);
795 memset(ptr
, 0x80, tex_size
);
796 ws
->buffer_unmap(ws
, tex
->buffer
);
806 struct pipe_resource
*
807 i915_texture_from_handle(struct pipe_screen
* screen
,
808 const struct pipe_resource
*template,
809 struct winsys_handle
*whandle
)
811 struct i915_screen
*is
= i915_screen(screen
);
812 struct i915_texture
*tex
;
813 struct i915_winsys
*iws
= is
->iws
;
814 struct i915_winsys_buffer
*buffer
;
819 buffer
= iws
->buffer_from_handle(iws
, whandle
, &stride
);
821 /* Only supports one type */
822 if (template->target
!= PIPE_TEXTURE_2D
||
823 template->last_level
!= 0 ||
824 template->depth0
!= 1) {
828 tex
= CALLOC_STRUCT(i915_texture
);
832 tex
->b
.b
= *template;
833 tex
->b
.vtbl
= &i915_texture_vtbl
;
834 pipe_reference_init(&tex
->b
.b
.reference
, 1);
835 tex
->b
.b
.screen
= screen
;
837 tex
->stride
= stride
;
839 i915_texture_set_level_info(tex
, 0, 1, template->width0
, template->height0
, 1);
840 i915_texture_set_image_offset(tex
, 0, 0, 0, 0);
842 tex
->buffer
= buffer
;