2 * Mesa 3-D graphics library
5 * Copyright 2009 VMware, Inc. All Rights Reserved.
6 * Copyright (C) 2010 LunarG Inc.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
27 * Chia-I Wu <olv@lunarg.com>
30 #include "state_tracker/st_api.h"
32 #include "pipe/p_context.h"
33 #include "pipe/p_screen.h"
34 #include "util/u_memory.h"
35 #include "util/u_inlines.h"
36 #include "util/u_format.h"
37 #include "util/u_sampler.h"
39 #include "vg_manager.h"
40 #include "vg_context.h"
44 static struct pipe_resource
*
45 create_texture(struct pipe_context
*pipe
, enum pipe_format format
,
46 VGint width
, VGint height
)
48 struct pipe_resource templ
;
50 memset(&templ
, 0, sizeof(templ
));
52 if (format
!= PIPE_FORMAT_NONE
) {
53 templ
.format
= format
;
56 templ
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
59 templ
.target
= PIPE_TEXTURE_2D
;
61 templ
.height0
= height
;
65 if (util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1)) {
66 templ
.bind
= PIPE_BIND_DEPTH_STENCIL
;
68 templ
.bind
= (PIPE_BIND_DISPLAY_TARGET
|
69 PIPE_BIND_RENDER_TARGET
|
70 PIPE_BIND_SAMPLER_VIEW
);
73 return pipe
->screen
->resource_create(pipe
->screen
, &templ
);
76 static struct pipe_sampler_view
*
77 create_tex_and_view(struct pipe_context
*pipe
, enum pipe_format format
,
78 VGint width
, VGint height
)
80 struct pipe_resource
*texture
;
81 struct pipe_sampler_view view_templ
;
82 struct pipe_sampler_view
*view
;
84 texture
= create_texture(pipe
, format
, width
, height
);
89 u_sampler_view_default_template(&view_templ
, texture
, texture
->format
);
90 view
= pipe
->create_sampler_view(pipe
, texture
, &view_templ
);
91 /* want the texture to go away if the view is freed */
92 pipe_resource_reference(&texture
, NULL
);
98 setup_new_alpha_mask(struct vg_context
*ctx
, struct st_framebuffer
*stfb
)
100 struct pipe_context
*pipe
= ctx
->pipe
;
101 struct pipe_sampler_view
*old_sampler_view
= stfb
->alpha_mask_view
;
104 we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
105 this texture and use it as a sampler, so while this wastes some
106 space it makes both of those a lot simpler
108 stfb
->alpha_mask_view
= create_tex_and_view(pipe
,
109 PIPE_FORMAT_B8G8R8A8_UNORM
, stfb
->width
, stfb
->height
);
111 if (!stfb
->alpha_mask_view
) {
112 if (old_sampler_view
)
113 pipe_sampler_view_reference(&old_sampler_view
, NULL
);
117 /* XXX could this call be avoided? */
118 vg_validate_state(ctx
);
120 /* alpha mask starts with 1.f alpha */
121 mask_fill(0, 0, stfb
->width
, stfb
->height
, 1.f
);
123 /* if we had an old surface copy it over */
124 if (old_sampler_view
) {
125 struct pipe_surface
*surface
= pipe
->screen
->get_tex_surface(
127 stfb
->alpha_mask_view
->texture
,
129 PIPE_BIND_RENDER_TARGET
|
130 PIPE_BIND_BLIT_DESTINATION
);
131 struct pipe_surface
*old_surface
= pipe
->screen
->get_tex_surface(
133 old_sampler_view
->texture
,
135 PIPE_BIND_BLIT_SOURCE
);
136 pipe
->surface_copy(pipe
,
141 MIN2(old_surface
->width
, surface
->width
),
142 MIN2(old_surface
->height
, surface
->height
));
144 pipe_surface_reference(&surface
, NULL
);
146 pipe_surface_reference(&old_surface
, NULL
);
149 /* Free the old texture
151 if (old_sampler_view
)
152 pipe_sampler_view_reference(&old_sampler_view
, NULL
);
156 vg_context_update_depth_stencil_rb(struct vg_context
* ctx
,
157 uint width
, uint height
)
159 struct st_renderbuffer
*dsrb
= ctx
->draw_buffer
->dsrb
;
160 struct pipe_context
*pipe
= ctx
->pipe
;
161 unsigned surface_usage
;
163 if ((dsrb
->width
== width
&& dsrb
->height
== height
) && dsrb
->texture
)
166 /* unreference existing ones */
167 pipe_surface_reference(&dsrb
->surface
, NULL
);
168 pipe_resource_reference(&dsrb
->texture
, NULL
);
169 dsrb
->width
= dsrb
->height
= 0;
171 /* Probably need dedicated flags for surface usage too:
173 surface_usage
= (PIPE_BIND_RENDER_TARGET
|
174 PIPE_BIND_BLIT_SOURCE
|
175 PIPE_BIND_BLIT_DESTINATION
);
177 dsrb
->texture
= create_texture(pipe
, dsrb
->format
, width
, height
);
181 dsrb
->surface
= pipe
->screen
->get_tex_surface(pipe
->screen
,
185 if (!dsrb
->surface
) {
186 pipe_resource_reference(&dsrb
->texture
, NULL
);
191 dsrb
->height
= height
;
193 assert(dsrb
->surface
->width
== width
);
194 assert(dsrb
->surface
->height
== height
);
200 vg_context_update_color_rb(struct vg_context
*ctx
, struct pipe_resource
*pt
)
202 struct st_renderbuffer
*strb
= ctx
->draw_buffer
->strb
;
203 struct pipe_screen
*screen
= ctx
->pipe
->screen
;
205 if (strb
->texture
== pt
) {
206 pipe_resource_reference(&pt
, NULL
);
210 /* unreference existing ones */
211 pipe_surface_reference(&strb
->surface
, NULL
);
212 pipe_resource_reference(&strb
->texture
, NULL
);
213 strb
->width
= strb
->height
= 0;
216 strb
->surface
= screen
->get_tex_surface(screen
, strb
->texture
, 0, 0, 0,
217 PIPE_BIND_RENDER_TARGET
|
218 PIPE_BIND_BLIT_SOURCE
|
219 PIPE_BIND_BLIT_DESTINATION
);
220 if (!strb
->surface
) {
221 pipe_resource_reference(&strb
->texture
, NULL
);
225 strb
->width
= pt
->width0
;
226 strb
->height
= pt
->height0
;
232 vg_context_update_draw_buffer(struct vg_context
*ctx
, struct pipe_resource
*pt
)
234 struct st_framebuffer
*stfb
= ctx
->draw_buffer
;
235 boolean new_cbuf
, new_zsbuf
, new_size
;
237 new_cbuf
= vg_context_update_color_rb(ctx
, pt
);
239 vg_context_update_depth_stencil_rb(ctx
, pt
->width0
, pt
->height0
);
241 new_size
= (stfb
->width
!= pt
->width0
|| stfb
->height
!= pt
->height0
);
242 stfb
->width
= pt
->width0
;
243 stfb
->height
= pt
->height0
;
245 if (new_cbuf
|| new_zsbuf
|| new_size
) {
246 struct pipe_framebuffer_state
*state
= &ctx
->state
.g3d
.fb
;
248 memset(state
, 0, sizeof(struct pipe_framebuffer_state
));
249 state
->width
= stfb
->width
;
250 state
->height
= stfb
->height
;
252 state
->cbufs
[0] = stfb
->strb
->surface
;
253 state
->zsbuf
= stfb
->dsrb
->surface
;
255 cso_set_framebuffer(ctx
->cso_context
, state
);
258 if (new_zsbuf
|| new_size
) {
259 ctx
->state
.dirty
|= VIEWPORT_DIRTY
;
260 ctx
->state
.dirty
|= DEPTH_STENCIL_DIRTY
;/*to reset the scissors*/
262 ctx
->pipe
->clear(ctx
->pipe
, PIPE_CLEAR_DEPTHSTENCIL
, NULL
, 0.0, 0);
264 /* we need all the other state already set */
266 setup_new_alpha_mask(ctx
, stfb
);
268 pipe_sampler_view_reference( &stfb
->blend_texture_view
, NULL
);
269 stfb
->blend_texture_view
= create_tex_and_view(ctx
->pipe
,
270 PIPE_FORMAT_B8G8R8A8_UNORM
, stfb
->width
, stfb
->height
);
275 * Flush the front buffer if the current context renders to the front buffer.
278 vg_manager_flush_frontbuffer(struct vg_context
*ctx
)
280 struct st_framebuffer
*stfb
= ctx
->draw_buffer
;
285 switch (stfb
->strb_att
) {
286 case ST_ATTACHMENT_FRONT_LEFT
:
287 case ST_ATTACHMENT_FRONT_RIGHT
:
288 stfb
->iface
->flush_front(stfb
->iface
, stfb
->strb_att
);
296 * Re-validate the framebuffer.
299 vg_manager_validate_framebuffer(struct vg_context
*ctx
)
301 struct st_framebuffer
*stfb
= ctx
->draw_buffer
;
302 struct pipe_resource
*pt
;
304 /* no binding surface */
308 if (!p_atomic_read(&ctx
->draw_buffer_invalid
))
311 /* validate the fb */
312 if (!stfb
->iface
->validate(stfb
->iface
, &stfb
->strb_att
, 1, &pt
) || !pt
)
316 * unset draw_buffer_invalid first because vg_context_update_draw_buffer
317 * will cause the framebuffer to be validated again because of a call to
320 p_atomic_set(&ctx
->draw_buffer_invalid
, FALSE
);
321 vg_context_update_draw_buffer(ctx
, pt
);
326 vg_context_notify_invalid_framebuffer(struct st_context_iface
*stctxi
,
327 struct st_framebuffer_iface
*stfbi
)
329 struct vg_context
*ctx
= (struct vg_context
*) stctxi
;
330 p_atomic_set(&ctx
->draw_buffer_invalid
, TRUE
);
334 vg_context_flush(struct st_context_iface
*stctxi
, unsigned flags
,
335 struct pipe_fence_handle
**fence
)
337 struct vg_context
*ctx
= (struct vg_context
*) stctxi
;
338 ctx
->pipe
->flush(ctx
->pipe
, flags
, fence
);
339 if (flags
& PIPE_FLUSH_RENDER_CACHE
)
340 vg_manager_flush_frontbuffer(ctx
);
344 vg_context_destroy(struct st_context_iface
*stctxi
)
346 struct vg_context
*ctx
= (struct vg_context
*) stctxi
;
347 vg_destroy_context(ctx
);
350 static struct st_context_iface
*
351 vg_api_create_context(struct st_api
*stapi
, struct st_manager
*smapi
,
352 const struct st_visual
*visual
,
353 struct st_context_iface
*shared_stctxi
)
355 struct vg_context
*shared_ctx
= (struct vg_context
*) shared_stctxi
;
356 struct vg_context
*ctx
;
357 struct pipe_context
*pipe
;
359 pipe
= smapi
->screen
->context_create(smapi
->screen
, NULL
);
362 ctx
= vg_create_context(pipe
, NULL
, shared_ctx
);
368 ctx
->iface
.destroy
= vg_context_destroy
;
370 ctx
->iface
.notify_invalid_framebuffer
=
371 vg_context_notify_invalid_framebuffer
;
372 ctx
->iface
.flush
= vg_context_flush
;
374 ctx
->iface
.teximage
= NULL
;
375 ctx
->iface
.copy
= NULL
;
377 ctx
->iface
.st_context_private
= (void *) smapi
;
382 static struct st_renderbuffer
*
383 create_renderbuffer(enum pipe_format format
)
385 struct st_renderbuffer
*strb
;
387 strb
= CALLOC_STRUCT(st_renderbuffer
);
389 strb
->format
= format
;
395 destroy_renderbuffer(struct st_renderbuffer
*strb
)
397 pipe_surface_reference(&strb
->surface
, NULL
);
398 pipe_resource_reference(&strb
->texture
, NULL
);
403 * Decide the buffer to render to.
405 static enum st_attachment_type
406 choose_attachment(struct st_framebuffer_iface
*stfbi
)
408 enum st_attachment_type statt
;
410 statt
= stfbi
->visual
->render_buffer
;
411 if (statt
!= ST_ATTACHMENT_INVALID
) {
412 /* use the buffer given by the visual, unless it is unavailable */
413 if (!st_visual_have_buffers(stfbi
->visual
, 1 << statt
)) {
415 case ST_ATTACHMENT_BACK_LEFT
:
416 statt
= ST_ATTACHMENT_FRONT_LEFT
;
418 case ST_ATTACHMENT_BACK_RIGHT
:
419 statt
= ST_ATTACHMENT_FRONT_RIGHT
;
425 if (!st_visual_have_buffers(stfbi
->visual
, 1 << statt
))
426 statt
= ST_ATTACHMENT_INVALID
;
434 * Bind the context to the given framebuffers.
437 vg_context_bind_framebuffers(struct st_context_iface
*stctxi
,
438 struct st_framebuffer_iface
*stdrawi
,
439 struct st_framebuffer_iface
*streadi
)
441 struct vg_context
*ctx
= (struct vg_context
*) stctxi
;
442 struct st_framebuffer
*stfb
;
443 enum st_attachment_type strb_att
;
445 /* the draw and read framebuffers must be the same */
446 if (stdrawi
!= streadi
)
449 p_atomic_set(&ctx
->draw_buffer_invalid
, TRUE
);
451 strb_att
= (stdrawi
) ? choose_attachment(stdrawi
) : ST_ATTACHMENT_INVALID
;
453 if (ctx
->draw_buffer
) {
454 stfb
= ctx
->draw_buffer
;
456 /* free the existing fb */
458 stfb
->strb_att
!= strb_att
||
459 stfb
->strb
->format
!= stdrawi
->visual
->color_format
||
460 stfb
->dsrb
->format
!= stdrawi
->visual
->depth_stencil_format
) {
461 destroy_renderbuffer(stfb
->strb
);
462 destroy_renderbuffer(stfb
->dsrb
);
465 ctx
->draw_buffer
= NULL
;
472 if (strb_att
== ST_ATTACHMENT_INVALID
)
475 /* create a new fb */
476 if (!ctx
->draw_buffer
) {
477 stfb
= CALLOC_STRUCT(st_framebuffer
);
481 stfb
->strb
= create_renderbuffer(stdrawi
->visual
->color_format
);
487 stfb
->dsrb
= create_renderbuffer(stdrawi
->visual
->depth_stencil_format
);
496 stfb
->strb_att
= strb_att
;
498 ctx
->draw_buffer
= stfb
;
501 ctx
->draw_buffer
->iface
= stdrawi
;
507 vg_api_make_current(struct st_api
*stapi
, struct st_context_iface
*stctxi
,
508 struct st_framebuffer_iface
*stdrawi
,
509 struct st_framebuffer_iface
*streadi
)
511 struct vg_context
*ctx
= (struct vg_context
*) stctxi
;
514 vg_context_bind_framebuffers(stctxi
, stdrawi
, streadi
);
515 vg_set_current_context(ctx
);
520 static struct st_context_iface
*
521 vg_api_get_current(struct st_api
*stapi
)
523 struct vg_context
*ctx
= vg_current_context();
525 return (ctx
) ? &ctx
->iface
: NULL
;
529 vg_api_is_visual_supported(struct st_api
*stapi
,
530 const struct st_visual
*visual
)
532 /* the impl requires a depth/stencil buffer */
533 return util_format_is_depth_and_stencil(visual
->depth_stencil_format
);
537 vg_api_get_proc_address(struct st_api
*stapi
, const char *procname
)
540 return (st_proc_t
) NULL
;
544 vg_api_destroy(struct st_api
*stapi
)
549 static struct st_api
*
550 vg_module_create_api(void)
552 struct st_api
*stapi
;
554 stapi
= CALLOC_STRUCT(st_api
);
556 stapi
->destroy
= vg_api_destroy
;
557 stapi
->get_proc_address
= vg_api_get_proc_address
;
558 stapi
->is_visual_supported
= vg_api_is_visual_supported
;
560 stapi
->create_context
= vg_api_create_context
;
561 stapi
->make_current
= vg_api_make_current
;
562 stapi
->get_current
= vg_api_get_current
;
568 PUBLIC
const struct st_module st_module_OpenVG
= {
569 .api
= ST_API_OPENVG
,
570 .create_api
= vg_module_create_api
,