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 "pipe/p_context.h"
41 #include "state_tracker/drisw_api.h"
42 #include "state_tracker/st_context.h"
44 #include "dri_screen.h"
45 #include "dri_context.h"
46 #include "dri_drawable.h"
48 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present
, "SWRAST_NO_PRESENT", FALSE
);
49 static boolean swrast_no_present
= FALSE
;
52 get_drawable_info(__DRIdrawable
*dPriv
, int *x
, int *y
, int *w
, int *h
)
54 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
55 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
57 loader
->getDrawableInfo(dPriv
,
59 dPriv
->loaderPrivate
);
63 put_image(__DRIdrawable
*dPriv
, void *data
, unsigned width
, unsigned height
)
65 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
66 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
68 loader
->putImage(dPriv
, __DRI_SWRAST_IMAGE_OP_SWAP
,
70 data
, dPriv
->loaderPrivate
);
74 get_image(__DRIdrawable
*dPriv
, int x
, int y
, int width
, int height
, void *data
)
76 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
77 const __DRIswrastLoaderExtension
*loader
= sPriv
->swrast_loader
;
79 loader
->getImage(dPriv
,
81 data
, dPriv
->loaderPrivate
);
85 drisw_update_drawable_info(struct dri_drawable
*drawable
)
87 __DRIdrawable
*dPriv
= drawable
->dPriv
;
90 get_drawable_info(dPriv
, &x
, &y
, &dPriv
->w
, &dPriv
->h
);
94 drisw_put_image(struct dri_drawable
*drawable
,
95 void *data
, unsigned width
, unsigned height
)
97 __DRIdrawable
*dPriv
= drawable
->dPriv
;
99 put_image(dPriv
, data
, width
, height
);
103 drisw_present_texture(__DRIdrawable
*dPriv
,
104 struct pipe_resource
*ptex
)
106 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
107 struct dri_screen
*screen
= dri_screen(drawable
->sPriv
);
109 if (swrast_no_present
)
112 screen
->base
.screen
->flush_frontbuffer(screen
->base
.screen
, ptex
, 0, 0, drawable
);
116 drisw_invalidate_drawable(__DRIdrawable
*dPriv
)
118 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
120 drawable
->texture_stamp
= dPriv
->lastStamp
- 1;
122 p_atomic_inc(&drawable
->base
.stamp
);
126 drisw_copy_to_front(__DRIdrawable
* dPriv
,
127 struct pipe_resource
*ptex
)
129 drisw_present_texture(dPriv
, ptex
);
131 drisw_invalidate_drawable(dPriv
);
135 * Backend functions for st_framebuffer interface and swap_buffers.
139 drisw_swap_buffers(__DRIdrawable
*dPriv
)
141 struct dri_context
*ctx
= dri_get_current(dPriv
->driScreenPriv
);
142 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
143 struct pipe_resource
*ptex
;
148 ptex
= drawable
->textures
[ST_ATTACHMENT_BACK_LEFT
];
151 if (ctx
->pp
&& drawable
->textures
[ST_ATTACHMENT_DEPTH_STENCIL
])
152 pp_run(ctx
->pp
, ptex
, ptex
, drawable
->textures
[ST_ATTACHMENT_DEPTH_STENCIL
]);
154 ctx
->st
->flush(ctx
->st
, ST_FLUSH_FRONT
, NULL
);
156 drisw_copy_to_front(dPriv
, ptex
);
161 drisw_flush_frontbuffer(struct dri_drawable
*drawable
,
162 enum st_attachment_type statt
)
164 struct dri_context
*ctx
= dri_get_current(drawable
->sPriv
);
165 struct pipe_resource
*ptex
;
170 ptex
= drawable
->textures
[statt
];
173 drisw_copy_to_front(ctx
->dPriv
, ptex
);
178 * Allocate framebuffer attachments.
180 * During fixed-size operation, the function keeps allocating new attachments
181 * as they are requested. Unused attachments are not removed, not until the
182 * framebuffer is resized or destroyed.
185 drisw_allocate_textures(struct dri_drawable
*drawable
,
186 const enum st_attachment_type
*statts
,
189 struct dri_screen
*screen
= dri_screen(drawable
->sPriv
);
190 struct pipe_resource templ
;
191 unsigned width
, height
;
195 width
= drawable
->dPriv
->w
;
196 height
= drawable
->dPriv
->h
;
198 resized
= (drawable
->old_w
!= width
||
199 drawable
->old_h
!= height
);
201 /* remove outdated textures */
203 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++)
204 pipe_resource_reference(&drawable
->textures
[i
], NULL
);
207 memset(&templ
, 0, sizeof(templ
));
208 templ
.target
= screen
->target
;
209 templ
.width0
= width
;
210 templ
.height0
= height
;
212 templ
.array_size
= 1;
213 templ
.last_level
= 0;
215 for (i
= 0; i
< count
; i
++) {
216 enum pipe_format format
;
219 /* the texture already exists or not requested */
220 if (drawable
->textures
[statts
[i
]])
223 dri_drawable_get_format(drawable
, statts
[i
], &format
, &bind
);
225 /* if we don't do any present, no need for display targets */
226 if (statts
[i
] != ST_ATTACHMENT_DEPTH_STENCIL
&& !swrast_no_present
)
227 bind
|= PIPE_BIND_DISPLAY_TARGET
;
229 if (format
== PIPE_FORMAT_NONE
)
232 templ
.format
= format
;
235 drawable
->textures
[statts
[i
]] =
236 screen
->base
.screen
->resource_create(screen
->base
.screen
, &templ
);
239 drawable
->old_w
= width
;
240 drawable
->old_h
= height
;
244 drisw_update_tex_buffer(struct dri_drawable
*drawable
,
245 struct dri_context
*ctx
,
246 struct pipe_resource
*res
)
248 __DRIdrawable
*dPriv
= drawable
->dPriv
;
250 struct st_context
*st_ctx
= (struct st_context
*)ctx
->st
;
251 struct pipe_context
*pipe
= st_ctx
->pipe
;
252 struct pipe_transfer
*transfer
;
255 int ximage_stride
, line
;
257 get_drawable_info(dPriv
, &x
, &y
, &w
, &h
);
259 transfer
= pipe_get_transfer(pipe
, res
,
260 0, 0, // level, layer,
263 map
= pipe_transfer_map(pipe
, transfer
);
265 /* Copy the Drawable content to the mapped texture buffer */
266 get_image(dPriv
, x
, y
, w
, h
, map
);
268 /* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
269 We assume 32 bit pixels. */
270 ximage_stride
= w
* 4;
271 for (line
= h
-1; line
; --line
) {
272 memmove(&map
[line
* transfer
->stride
],
273 &map
[line
* ximage_stride
],
277 pipe_transfer_unmap(pipe
, transfer
);
278 pipe_transfer_destroy(pipe
, transfer
);
282 * Backend function for init_screen.
285 static const __DRIextension
*drisw_screen_extensions
[] = {
286 &driTexBufferExtension
.base
,
290 static struct drisw_loader_funcs drisw_lf
= {
291 .put_image
= drisw_put_image
294 static const __DRIconfig
**
295 drisw_init_screen(__DRIscreen
* sPriv
)
297 const __DRIconfig
**configs
;
298 struct dri_screen
*screen
;
299 struct pipe_screen
*pscreen
;
301 screen
= CALLOC_STRUCT(dri_screen
);
305 screen
->sPriv
= sPriv
;
308 swrast_no_present
= debug_get_option_swrast_no_present();
310 sPriv
->driverPrivate
= (void *)screen
;
311 sPriv
->extensions
= drisw_screen_extensions
;
313 pscreen
= drisw_create_screen(&drisw_lf
);
314 /* dri_init_screen_helper checks pscreen for us */
316 configs
= dri_init_screen_helper(screen
, pscreen
, 32);
322 dri_destroy_screen_helper(screen
);
328 drisw_create_buffer(__DRIscreen
* sPriv
,
329 __DRIdrawable
* dPriv
,
330 const struct gl_config
* visual
, boolean isPixmap
)
332 struct dri_drawable
*drawable
= NULL
;
334 if (!dri_create_buffer(sPriv
, dPriv
, visual
, isPixmap
))
337 drawable
= dPriv
->driverPrivate
;
339 drawable
->allocate_textures
= drisw_allocate_textures
;
340 drawable
->update_drawable_info
= drisw_update_drawable_info
;
341 drawable
->flush_frontbuffer
= drisw_flush_frontbuffer
;
342 drawable
->update_tex_buffer
= drisw_update_tex_buffer
;
348 * DRI driver virtual function table.
350 * DRI versions differ in their implementation of init_screen and swap_buffers.
352 const struct __DriverAPIRec driDriverAPI
= {
353 .InitScreen
= drisw_init_screen
,
354 .DestroyScreen
= dri_destroy_screen
,
355 .CreateContext
= dri_create_context
,
356 .DestroyContext
= dri_destroy_context
,
357 .CreateBuffer
= drisw_create_buffer
,
358 .DestroyBuffer
= dri_destroy_buffer
,
359 .SwapBuffers
= drisw_swap_buffers
,
360 .MakeCurrent
= dri_make_current
,
361 .UnbindContext
= dri_unbind_context
,
364 /* This is the table of extensions that the loader will dlsym() for. */
365 PUBLIC
const __DRIextension
*__driDriverExtensions
[] = {
366 &driCoreExtension
.base
,
367 &driSWRastExtension
.base
,
371 /* vim: set sw=3 ts=8 sts=3 expandtab: */