vg_context.c revision 859106f196ade77f59f8787b071739901cd1a843 
1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.  All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 **************************************************************************/
26
27#include "vg_context.h"
28
29#include "paint.h"
30#include "renderer.h"
31#include "shaders_cache.h"
32#include "shader.h"
33#include "asm_util.h"
34#include "vg_manager.h"
35#include "api.h"
36#include "mask.h"
37
38#include "pipe/p_context.h"
39#include "util/u_inlines.h"
40
41#include "cso_cache/cso_context.h"
42
43#include "util/u_simple_shaders.h"
44#include "util/u_memory.h"
45#include "util/u_blit.h"
46#include "util/u_sampler.h"
47#include "util/u_surface.h"
48#include "util/u_format.h"
49
50struct vg_context *_vg_context = 0;
51
52struct vg_context * vg_current_context(void)
53{
54   return _vg_context;
55}
56
57/**
58 * A depth/stencil rb will be needed regardless of what the visual says.
59 */
60static boolean
61choose_depth_stencil_format(struct vg_context *ctx)
62{
63   struct pipe_screen *screen = ctx->pipe->screen;
64   enum pipe_format formats[] = {
65      PIPE_FORMAT_Z24_UNORM_S8_USCALED,
66      PIPE_FORMAT_S8_USCALED_Z24_UNORM,
67      PIPE_FORMAT_NONE
68   };
69   enum pipe_format *fmt;
70
71   for (fmt = formats; *fmt != PIPE_FORMAT_NONE; fmt++) {
72      if (screen->is_format_supported(screen, *fmt,
73               PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL, 0))
74         break;
75   }
76
77   ctx->ds_format = *fmt;
78
79   return (ctx->ds_format != PIPE_FORMAT_NONE);
80}
81
82void vg_set_current_context(struct vg_context *ctx)
83{
84   _vg_context = ctx;
85   api_make_dispatch_current((ctx) ? ctx->dispatch : NULL);
86}
87
88struct vg_context * vg_create_context(struct pipe_context *pipe,
89                                      const void *visual,
90                                      struct vg_context *share)
91{
92   struct vg_context *ctx;
93
94   ctx = CALLOC_STRUCT(vg_context);
95
96   ctx->pipe = pipe;
97   if (!choose_depth_stencil_format(ctx)) {
98      FREE(ctx);
99      return NULL;
100   }
101
102   ctx->dispatch = api_create_dispatch();
103
104   vg_init_state(&ctx->state.vg);
105   ctx->state.dirty = ALL_DIRTY;
106
107   ctx->cso_context = cso_create_context(pipe);
108
109   ctx->default_paint = paint_create(ctx);
110   ctx->state.vg.stroke_paint = ctx->default_paint;
111   ctx->state.vg.fill_paint = ctx->default_paint;
112
113
114   ctx->mask.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
115   ctx->mask.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
116   ctx->mask.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
117   ctx->mask.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
118   ctx->mask.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
119   ctx->mask.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
120   ctx->mask.sampler.normalized_coords = 0;
121
122   ctx->blend_sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
123   ctx->blend_sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
124   ctx->blend_sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
125   ctx->blend_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
126   ctx->blend_sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
127   ctx->blend_sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
128   ctx->blend_sampler.normalized_coords = 0;
129
130   vg_set_error(ctx, VG_NO_ERROR);
131
132   ctx->owned_objects[VG_OBJECT_PAINT] = cso_hash_create();
133   ctx->owned_objects[VG_OBJECT_IMAGE] = cso_hash_create();
134   ctx->owned_objects[VG_OBJECT_MASK] = cso_hash_create();
135   ctx->owned_objects[VG_OBJECT_FONT] = cso_hash_create();
136   ctx->owned_objects[VG_OBJECT_PATH] = cso_hash_create();
137
138   ctx->renderer = renderer_create(ctx);
139   ctx->sc = shaders_cache_create(ctx);
140   ctx->shader = shader_create(ctx);
141
142   ctx->blit = util_create_blit(ctx->pipe, ctx->cso_context);
143
144   return ctx;
145}
146
147void vg_destroy_context(struct vg_context *ctx)
148{
149   struct pipe_resource **cbuf = &ctx->mask.cbuf;
150
151   util_destroy_blit(ctx->blit);
152   renderer_destroy(ctx->renderer);
153   shaders_cache_destroy(ctx->sc);
154   shader_destroy(ctx->shader);
155   paint_destroy(ctx->default_paint);
156
157   if (*cbuf)
158      pipe_resource_reference(cbuf, NULL);
159
160   if (ctx->mask.union_fs)
161      vg_shader_destroy(ctx, ctx->mask.union_fs);
162   if (ctx->mask.intersect_fs)
163      vg_shader_destroy(ctx, ctx->mask.intersect_fs);
164   if (ctx->mask.subtract_fs)
165      vg_shader_destroy(ctx, ctx->mask.subtract_fs);
166   if (ctx->mask.set_fs)
167      vg_shader_destroy(ctx, ctx->mask.set_fs);
168
169   cso_release_all(ctx->cso_context);
170   cso_destroy_context(ctx->cso_context);
171
172   cso_hash_delete(ctx->owned_objects[VG_OBJECT_PAINT]);
173   cso_hash_delete(ctx->owned_objects[VG_OBJECT_IMAGE]);
174   cso_hash_delete(ctx->owned_objects[VG_OBJECT_MASK]);
175   cso_hash_delete(ctx->owned_objects[VG_OBJECT_FONT]);
176   cso_hash_delete(ctx->owned_objects[VG_OBJECT_PATH]);
177
178   api_destroy_dispatch(ctx->dispatch);
179
180   FREE(ctx);
181}
182
183void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type)
184{
185   obj->type = type;
186   obj->ctx = ctx;
187}
188
189VGboolean vg_context_is_object_valid(struct vg_context *ctx,
190                                enum vg_object_type type,
191                                void *ptr)
192{
193    if (ctx) {
194       struct cso_hash *hash = ctx->owned_objects[type];
195       if (!hash)
196          return VG_FALSE;
197       return cso_hash_contains(hash, (unsigned)(long)ptr);
198    }
199    return VG_FALSE;
200}
201
202void vg_context_add_object(struct vg_context *ctx,
203                           enum vg_object_type type,
204                           void *ptr)
205{
206    if (ctx) {
207       struct cso_hash *hash = ctx->owned_objects[type];
208       if (!hash)
209          return;
210       cso_hash_insert(hash, (unsigned)(long)ptr, ptr);
211    }
212}
213
214void vg_context_remove_object(struct vg_context *ctx,
215                              enum vg_object_type type,
216                              void *ptr)
217{
218   if (ctx) {
219      struct cso_hash *hash = ctx->owned_objects[type];
220      if (!hash)
221         return;
222      cso_hash_take(hash, (unsigned)(long)ptr);
223   }
224}
225
226static struct pipe_resource *
227create_texture(struct pipe_context *pipe, enum pipe_format format,
228                    VGint width, VGint height)
229{
230   struct pipe_resource templ;
231
232   memset(&templ, 0, sizeof(templ));
233
234   if (format != PIPE_FORMAT_NONE) {
235      templ.format = format;
236   }
237   else {
238      templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
239   }
240
241   templ.target = PIPE_TEXTURE_2D;
242   templ.width0 = width;
243   templ.height0 = height;
244   templ.depth0 = 1;
245   templ.array_size = 1;
246   templ.last_level = 0;
247
248   if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
249      templ.bind = PIPE_BIND_DEPTH_STENCIL;
250   } else {
251      templ.bind = (PIPE_BIND_DISPLAY_TARGET |
252                    PIPE_BIND_RENDER_TARGET |
253                    PIPE_BIND_SAMPLER_VIEW);
254   }
255
256   return pipe->screen->resource_create(pipe->screen, &templ);
257}
258
259static struct pipe_sampler_view *
260create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
261                    VGint width, VGint height)
262{
263   struct pipe_resource *texture;
264   struct pipe_sampler_view view_templ;
265   struct pipe_sampler_view *view;
266
267   texture = create_texture(pipe, format, width, height);
268
269   if (!texture)
270      return NULL;
271
272   u_sampler_view_default_template(&view_templ, texture, texture->format);
273   view = pipe->create_sampler_view(pipe, texture, &view_templ);
274   /* want the texture to go away if the view is freed */
275   pipe_resource_reference(&texture, NULL);
276
277   return view;
278}
279
280static void
281vg_context_update_surface_mask_view(struct vg_context *ctx,
282                                    uint width, uint height)
283{
284   struct st_framebuffer *stfb = ctx->draw_buffer;
285   struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
286   struct pipe_context *pipe = ctx->pipe;
287
288   if (old_sampler_view &&
289       old_sampler_view->texture->width0 == width &&
290       old_sampler_view->texture->height0 == height)
291      return;
292
293   /*
294     we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
295     this texture and use it as a sampler, so while this wastes some
296     space it makes both of those a lot simpler
297   */
298   stfb->surface_mask_view = create_tex_and_view(pipe,
299         PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
300
301   if (!stfb->surface_mask_view) {
302      if (old_sampler_view)
303         pipe_sampler_view_reference(&old_sampler_view, NULL);
304      return;
305   }
306
307   /* XXX could this call be avoided? */
308   vg_validate_state(ctx);
309
310   /* alpha mask starts with 1.f alpha */
311   mask_fill(0, 0, width, height, 1.f);
312
313   /* if we had an old surface copy it over */
314   if (old_sampler_view) {
315      struct pipe_box src_box;
316      u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
317                           stfb->surface_mask_view->texture->width0),
318                      MIN2(old_sampler_view->texture->height0,
319                           stfb->surface_mask_view->texture->height0),
320                      &src_box);
321
322      pipe->resource_copy_region(pipe,
323                                 stfb->surface_mask_view->texture,
324                                 0, 0, 0, 0,
325                                 old_sampler_view->texture,
326                                 0, &src_box);
327   }
328
329   /* Free the old texture
330    */
331   if (old_sampler_view)
332      pipe_sampler_view_reference(&old_sampler_view, NULL);
333}
334
335static void
336vg_context_update_blend_texture_view(struct vg_context *ctx,
337                                     uint width, uint height)
338{
339   struct pipe_context *pipe = ctx->pipe;
340   struct st_framebuffer *stfb = ctx->draw_buffer;
341   struct pipe_sampler_view *old = stfb->blend_texture_view;
342
343   if (old &&
344       old->texture->width0 == width &&
345       old->texture->height0 == height)
346      return;
347
348   stfb->blend_texture_view = create_tex_and_view(pipe,
349         PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
350
351   pipe_sampler_view_reference(&old, NULL);
352}
353
354static boolean
355vg_context_update_depth_stencil_rb(struct vg_context * ctx,
356                                   uint width, uint height)
357{
358   struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
359   struct pipe_context *pipe = ctx->pipe;
360   struct pipe_surface surf_tmpl;
361
362   if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
363      return FALSE;
364
365   /* unreference existing ones */
366   pipe_surface_reference(&dsrb->surface, NULL);
367   pipe_resource_reference(&dsrb->texture, NULL);
368   dsrb->width = dsrb->height = 0;
369
370   dsrb->texture = create_texture(pipe, dsrb->format, width, height);
371   if (!dsrb->texture)
372      return TRUE;
373
374   memset(&surf_tmpl, 0, sizeof(surf_tmpl));
375   u_surface_default_template(&surf_tmpl, dsrb->texture,
376                              PIPE_BIND_DEPTH_STENCIL);
377   dsrb->surface = pipe->create_surface(pipe,
378                                        dsrb->texture,
379                                        &surf_tmpl);
380   if (!dsrb->surface) {
381      pipe_resource_reference(&dsrb->texture, NULL);
382      return TRUE;
383   }
384
385   dsrb->width = width;
386   dsrb->height = height;
387
388   assert(dsrb->surface->width == width);
389   assert(dsrb->surface->height == height);
390
391   return TRUE;
392}
393
394void vg_validate_state(struct vg_context *ctx)
395{
396   struct st_framebuffer *stfb = ctx->draw_buffer;
397
398   vg_manager_validate_framebuffer(ctx);
399
400   if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
401      ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
402
403   /* blend state depends on fb format */
404   if (ctx->state.dirty & FRAMEBUFFER_DIRTY)
405      ctx->state.dirty |= BLEND_DIRTY;
406
407   renderer_validate(ctx->renderer, ctx->state.dirty,
408         ctx->draw_buffer, &ctx->state.vg);
409
410   ctx->state.dirty = 0;
411
412   shader_set_masking(ctx->shader, ctx->state.vg.masking);
413   shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
414   shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
415}
416
417VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type)
418{
419   struct vg_object *obj = ptr;
420   if (ptr && is_aligned(obj) && obj->type == type)
421      return VG_TRUE;
422   else
423      return VG_FALSE;
424}
425
426void vg_set_error(struct vg_context *ctx,
427                  VGErrorCode code)
428{
429   /*vgGetError returns the oldest error code provided by
430    * an API call on the current context since the previous
431    * call to vgGetError on that context (or since the creation
432    of the context).*/
433   if (ctx->_error == VG_NO_ERROR)
434      ctx->_error = code;
435}
436
437static void vg_prepare_blend_texture(struct vg_context *ctx,
438                                     struct pipe_sampler_view *src)
439{
440   struct st_framebuffer *stfb = ctx->draw_buffer;
441   struct pipe_surface *surf;
442   struct pipe_surface surf_tmpl;
443
444   vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
445
446   memset(&surf_tmpl, 0, sizeof(surf_tmpl));
447   u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
448                              PIPE_BIND_RENDER_TARGET);
449   surf = ctx->pipe->create_surface(ctx->pipe,
450                                    stfb->blend_texture_view->texture,
451                                    &surf_tmpl);
452   if (surf) {
453      util_blit_pixels_tex(ctx->blit,
454                           src, 0, 0, stfb->width, stfb->height,
455                           surf, 0, 0, stfb->width, stfb->height,
456                           0.0, PIPE_TEX_MIPFILTER_NEAREST);
457
458      pipe_surface_reference(&surf, NULL);
459   }
460}
461
462struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
463{
464   struct pipe_context *pipe = ctx->pipe;
465   struct pipe_sampler_view *view;
466   struct pipe_sampler_view view_templ;
467   struct st_framebuffer *stfb = ctx->draw_buffer;
468   struct st_renderbuffer *strb = stfb->strb;
469
470   vg_validate_state(ctx);
471
472   u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
473   view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
474
475   vg_prepare_blend_texture(ctx, view);
476
477   pipe_sampler_view_reference(&view, NULL);
478
479   return stfb->blend_texture_view;
480}
481
482
483struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
484{
485   struct st_framebuffer *stfb = ctx->draw_buffer;
486
487   vg_validate_state(ctx);
488
489   vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
490   vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
491
492   return stfb->blend_texture_view;
493}
494
495struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx)
496{
497   struct st_framebuffer *stfb = ctx->draw_buffer;
498
499   vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
500
501   return stfb->surface_mask_view;
502}
503
504/**
505 * A transformation from window coordinates to paint coordinates.
506 */
507VGboolean vg_get_paint_matrix(struct vg_context *ctx,
508                              const struct matrix *paint_to_user,
509                              const struct matrix *user_to_surface,
510                              struct matrix *mat)
511{
512   struct matrix tmp;
513
514   /* get user-to-paint matrix */
515   memcpy(mat, paint_to_user, sizeof(*paint_to_user));
516   if (!matrix_invert(mat))
517      return VG_FALSE;
518
519   /* get surface-to-user matrix */
520   memcpy(&tmp, user_to_surface, sizeof(*user_to_surface));
521   if (!matrix_invert(&tmp))
522      return VG_FALSE;
523
524   matrix_mult(mat, &tmp);
525
526   return VG_TRUE;
527}
528