1 /**************************************************************************
3 * Copyright 2009, VMware, Inc.
5 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
33 * Allow the loaders to use the XSHM extension. It probably requires callbacks
34 * for createImage/destroyImage similar to DRI2 getBuffers.
37 #include "util/u_format.h"
38 #include "util/u_memory.h"
39 #include "util/u_inlines.h"
40 #include "util/u_box.h"
41 #include "pipe/p_context.h"
42 #include "pipe-loader/pipe_loader.h"
43 #include "state_tracker/drisw_api.h"
44 #include "state_tracker/st_context.h"
46 #include "dri_screen.h"
47 #include "dri_context.h"
48 #include "dri_drawable.h"
49 #include "dri_extensions.h"
50 #include "dri_query_renderer.h"
52 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present
, "SWRAST_NO_PRESENT", FALSE
);
53 static boolean swrast_no_present
= FALSE
;
56 get_drawable_info(__DRIdrawable
*dPriv
, int *x
, int *y
, int *w
, int *h
)
58 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
59 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
61 loader
->getDrawableInfo(dPriv
,
63 dPriv
->loaderPrivate
);
67 put_image(__DRIdrawable
*dPriv
, void *data
, unsigned width
, unsigned height
)
69 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
70 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
72 loader
->putImage(dPriv
, __DRI_SWRAST_IMAGE_OP_SWAP
,
74 data
, dPriv
->loaderPrivate
);
78 put_image2(__DRIdrawable
*dPriv
, void *data
, int x
, int y
,
79 unsigned width
, unsigned height
, unsigned stride
)
81 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
82 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
84 loader
->putImage2(dPriv
, __DRI_SWRAST_IMAGE_OP_SWAP
,
85 x
, y
, width
, height
, stride
,
86 data
, dPriv
->loaderPrivate
);
90 get_image(__DRIdrawable
*dPriv
, int x
, int y
, int width
, int height
, void *data
)
92 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
93 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
95 loader
->getImage(dPriv
,
97 data
, dPriv
->loaderPrivate
);
101 get_image2(__DRIdrawable
*dPriv
, int x
, int y
, int width
, int height
, int stride
, void *data
)
103 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
104 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
106 /* getImage2 support is only in version 3 or newer */
107 if (loader
->base
.version
< 3)
110 loader
->getImage2(dPriv
,
111 x
, y
, width
, height
, stride
,
112 data
, dPriv
->loaderPrivate
);
116 drisw_update_drawable_info(struct dri_drawable
*drawable
)
118 __DRIdrawable
*dPriv
= drawable
->dPriv
;
121 get_drawable_info(dPriv
, &x
, &y
, &dPriv
->w
, &dPriv
->h
);
125 drisw_get_image(struct dri_drawable
*drawable
,
126 int x
, int y
, unsigned width
, unsigned height
, unsigned stride
,
129 __DRIdrawable
*dPriv
= drawable
->dPriv
;
130 int draw_x
, draw_y
, draw_w
, draw_h
;
132 get_drawable_info(dPriv
, &draw_x
, &draw_y
, &draw_w
, &draw_h
);
133 get_image2(dPriv
, x
, y
, draw_w
, draw_h
, stride
, data
);
137 drisw_put_image(struct dri_drawable
*drawable
,
138 void *data
, unsigned width
, unsigned height
)
140 __DRIdrawable
*dPriv
= drawable
->dPriv
;
142 put_image(dPriv
, data
, width
, height
);
146 drisw_put_image2(struct dri_drawable
*drawable
,
147 void *data
, int x
, int y
, unsigned width
, unsigned height
,
150 __DRIdrawable
*dPriv
= drawable
->dPriv
;
152 put_image2(dPriv
, data
, x
, y
, width
, height
, stride
);
156 drisw_present_texture(__DRIdrawable
*dPriv
,
157 struct pipe_resource
*ptex
, struct pipe_box
*sub_box
)
159 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
160 struct dri_screen
*screen
= dri_screen(drawable
->sPriv
);
162 if (swrast_no_present
)
165 screen
->base
.screen
->flush_frontbuffer(screen
->base
.screen
, ptex
, 0, 0, drawable
, sub_box
);
169 drisw_invalidate_drawable(__DRIdrawable
*dPriv
)
171 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
173 drawable
->texture_stamp
= dPriv
->lastStamp
- 1;
175 p_atomic_inc(&drawable
->base
.stamp
);
179 drisw_copy_to_front(__DRIdrawable
* dPriv
,
180 struct pipe_resource
*ptex
)
182 drisw_present_texture(dPriv
, ptex
, NULL
);
184 drisw_invalidate_drawable(dPriv
);
188 * Backend functions for st_framebuffer interface and swap_buffers.
192 drisw_swap_buffers(__DRIdrawable
*dPriv
)
194 struct dri_context
*ctx
= dri_get_current(dPriv
->driScreenPriv
);
195 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
196 struct pipe_resource
*ptex
;
201 ptex
= drawable
->textures
[ST_ATTACHMENT_BACK_LEFT
];
205 pp_run(ctx
->pp
, ptex
, ptex
, drawable
->textures
[ST_ATTACHMENT_DEPTH_STENCIL
]);
207 ctx
->st
->flush(ctx
->st
, ST_FLUSH_FRONT
, NULL
);
209 drisw_copy_to_front(dPriv
, ptex
);
214 drisw_copy_sub_buffer(__DRIdrawable
*dPriv
, int x
, int y
,
217 struct dri_context
*ctx
= dri_get_current(dPriv
->driScreenPriv
);
218 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
219 struct pipe_resource
*ptex
;
224 ptex
= drawable
->textures
[ST_ATTACHMENT_BACK_LEFT
];
227 if (ctx
->pp
&& drawable
->textures
[ST_ATTACHMENT_DEPTH_STENCIL
])
228 pp_run(ctx
->pp
, ptex
, ptex
, drawable
->textures
[ST_ATTACHMENT_DEPTH_STENCIL
]);
230 ctx
->st
->flush(ctx
->st
, ST_FLUSH_FRONT
, NULL
);
232 u_box_2d(x
, dPriv
->h
- y
- h
, w
, h
, &box
);
233 drisw_present_texture(dPriv
, ptex
, &box
);
238 drisw_flush_frontbuffer(struct dri_context
*ctx
,
239 struct dri_drawable
*drawable
,
240 enum st_attachment_type statt
)
242 struct pipe_resource
*ptex
;
247 ptex
= drawable
->textures
[statt
];
250 drisw_copy_to_front(ctx
->dPriv
, ptex
);
255 * Allocate framebuffer attachments.
257 * During fixed-size operation, the function keeps allocating new attachments
258 * as they are requested. Unused attachments are not removed, not until the
259 * framebuffer is resized or destroyed.
262 drisw_allocate_textures(struct dri_context
*stctx
,
263 struct dri_drawable
*drawable
,
264 const enum st_attachment_type
*statts
,
267 struct dri_screen
*screen
= dri_screen(drawable
->sPriv
);
268 const __DRIswrastLoaderExtension
*loader
= drawable
->dPriv
->driScreenPriv
->swrast_loader
;
269 struct pipe_resource templ
;
270 unsigned width
, height
;
274 width
= drawable
->dPriv
->w
;
275 height
= drawable
->dPriv
->h
;
277 resized
= (drawable
->old_w
!= width
||
278 drawable
->old_h
!= height
);
280 /* remove outdated textures */
282 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++)
283 pipe_resource_reference(&drawable
->textures
[i
], NULL
);
286 memset(&templ
, 0, sizeof(templ
));
287 templ
.target
= screen
->target
;
288 templ
.width0
= width
;
289 templ
.height0
= height
;
291 templ
.array_size
= 1;
292 templ
.last_level
= 0;
294 for (i
= 0; i
< count
; i
++) {
295 enum pipe_format format
;
298 /* the texture already exists or not requested */
299 if (drawable
->textures
[statts
[i
]])
302 dri_drawable_get_format(drawable
, statts
[i
], &format
, &bind
);
304 /* if we don't do any present, no need for display targets */
305 if (statts
[i
] != ST_ATTACHMENT_DEPTH_STENCIL
&& !swrast_no_present
)
306 bind
|= PIPE_BIND_DISPLAY_TARGET
;
308 if (format
== PIPE_FORMAT_NONE
)
311 templ
.format
= format
;
314 if (statts
[i
] == ST_ATTACHMENT_FRONT_LEFT
&&
315 screen
->base
.screen
->resource_create_front
&&
316 loader
->base
.version
>= 3) {
317 drawable
->textures
[statts
[i
]] =
318 screen
->base
.screen
->resource_create_front(screen
->base
.screen
, &templ
, (const void *)drawable
);
320 drawable
->textures
[statts
[i
]] =
321 screen
->base
.screen
->resource_create(screen
->base
.screen
, &templ
);
324 drawable
->old_w
= width
;
325 drawable
->old_h
= height
;
329 drisw_update_tex_buffer(struct dri_drawable
*drawable
,
330 struct dri_context
*ctx
,
331 struct pipe_resource
*res
)
333 __DRIdrawable
*dPriv
= drawable
->dPriv
;
335 struct st_context
*st_ctx
= (struct st_context
*)ctx
->st
;
336 struct pipe_context
*pipe
= st_ctx
->pipe
;
337 struct pipe_transfer
*transfer
;
340 int ximage_stride
, line
;
341 int cpp
= util_format_get_blocksize(res
->format
);
343 get_drawable_info(dPriv
, &x
, &y
, &w
, &h
);
345 map
= pipe_transfer_map(pipe
, res
,
346 0, 0, // level, layer,
348 x
, y
, w
, h
, &transfer
);
350 /* Copy the Drawable content to the mapped texture buffer */
351 get_image(dPriv
, x
, y
, w
, h
, map
);
353 /* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
354 get_image() has a pitch rounded up to 4 bytes. */
355 ximage_stride
= ((w
* cpp
) + 3) & -4;
356 for (line
= h
-1; line
; --line
) {
357 memmove(&map
[line
* transfer
->stride
],
358 &map
[line
* ximage_stride
],
362 pipe_transfer_unmap(pipe
, transfer
);
366 * Backend function for init_screen.
369 static const __DRIextension
*drisw_screen_extensions
[] = {
370 &driTexBufferExtension
.base
,
371 &dri2RendererQueryExtension
.base
,
372 &dri2ConfigQueryExtension
.base
,
373 &dri2FenceExtension
.base
,
374 &dri2NoErrorExtension
.base
,
378 static struct drisw_loader_funcs drisw_lf
= {
379 .get_image
= drisw_get_image
,
380 .put_image
= drisw_put_image
,
381 .put_image2
= drisw_put_image2
384 static const __DRIconfig
**
385 drisw_init_screen(__DRIscreen
* sPriv
)
387 const __DRIconfig
**configs
;
388 struct dri_screen
*screen
;
389 struct pipe_screen
*pscreen
= NULL
;
391 screen
= CALLOC_STRUCT(dri_screen
);
395 screen
->sPriv
= sPriv
;
398 swrast_no_present
= debug_get_option_swrast_no_present();
400 sPriv
->driverPrivate
= (void *)screen
;
401 sPriv
->extensions
= drisw_screen_extensions
;
403 struct pipe_screen_config config
;
405 config
.flags
= dri_init_options_get_screen_flags(screen
, "swrast");
407 if (pipe_loader_sw_probe_dri(&screen
->dev
, &drisw_lf
))
408 pscreen
= pipe_loader_create_screen(screen
->dev
, &config
);
413 configs
= dri_init_screen_helper(screen
, pscreen
);
419 dri_destroy_screen_helper(screen
);
421 pipe_loader_release(&screen
->dev
, 1);
427 drisw_create_buffer(__DRIscreen
* sPriv
,
428 __DRIdrawable
* dPriv
,
429 const struct gl_config
* visual
, boolean isPixmap
)
431 struct dri_drawable
*drawable
= NULL
;
433 if (!dri_create_buffer(sPriv
, dPriv
, visual
, isPixmap
))
436 drawable
= dPriv
->driverPrivate
;
438 drawable
->allocate_textures
= drisw_allocate_textures
;
439 drawable
->update_drawable_info
= drisw_update_drawable_info
;
440 drawable
->flush_frontbuffer
= drisw_flush_frontbuffer
;
441 drawable
->update_tex_buffer
= drisw_update_tex_buffer
;
447 * DRI driver virtual function table.
449 * DRI versions differ in their implementation of init_screen and swap_buffers.
451 const struct __DriverAPIRec galliumsw_driver_api
= {
452 .InitScreen
= drisw_init_screen
,
453 .DestroyScreen
= dri_destroy_screen
,
454 .CreateContext
= dri_create_context
,
455 .DestroyContext
= dri_destroy_context
,
456 .CreateBuffer
= drisw_create_buffer
,
457 .DestroyBuffer
= dri_destroy_buffer
,
458 .SwapBuffers
= drisw_swap_buffers
,
459 .MakeCurrent
= dri_make_current
,
460 .UnbindContext
= dri_unbind_context
,
461 .CopySubBuffer
= drisw_copy_sub_buffer
,
464 /* This is the table of extensions that the loader will dlsym() for. */
465 const __DRIextension
*galliumsw_driver_extensions
[] = {
466 &driCoreExtension
.base
,
467 &driSWRastExtension
.base
,
468 &driCopySubBufferExtension
.base
,
469 &gallium_config_options
.base
,
473 /* vim: set sw=3 ts=8 sts=3 expandtab: */