vg_context.h revision c91c38601234dc67fa356160cbe3bd389cac083a 
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#ifndef VG_CONTEXT_H
28#define VG_CONTEXT_H
29
30#include "vg_state.h"
31
32#include "pipe/p_format.h"
33#include "pipe/p_state.h"
34#include "util/u_pointer.h"
35#include "util/u_math.h"
36#include "state_tracker/st_api.h"
37
38#include "cso_cache/cso_hash.h"
39#include "cso_cache/cso_context.h"
40
41struct renderer;
42struct shaders_cache;
43struct shader;
44struct vg_shader;
45struct mapi_table;
46
47struct st_renderbuffer {
48   enum pipe_format   format;
49   struct pipe_surface *surface;
50   struct pipe_resource *texture;
51   VGint width, height;
52};
53
54struct st_framebuffer {
55   VGint width, height;
56   struct st_renderbuffer *strb;
57   struct st_renderbuffer *dsrb;
58
59   struct pipe_sampler_view *surface_mask_view;
60
61   struct pipe_sampler_view *blend_texture_view;
62
63
64   struct st_framebuffer_iface *iface;
65   enum st_attachment_type strb_att;
66
67   void *privateData;
68};
69
70enum vg_object_type {
71   VG_OBJECT_UNKNOWN = 0,
72   VG_OBJECT_PAINT,
73   VG_OBJECT_IMAGE,
74   VG_OBJECT_MASK,
75   VG_OBJECT_FONT,
76   VG_OBJECT_PATH,
77
78   VG_OBJECT_LAST
79};
80enum dirty_state {
81   NONE_DIRTY          = 0<<0,
82   BLEND_DIRTY         = 1<<1,
83   RASTERIZER_DIRTY    = 1<<2,
84   FRAMEBUFFER_DIRTY   = 1<<3,
85   VS_DIRTY            = 1<<4,
86   DEPTH_STENCIL_DIRTY = 1<<5,
87   ALL_DIRTY           = BLEND_DIRTY | RASTERIZER_DIRTY |
88   FRAMEBUFFER_DIRTY | VS_DIRTY | DEPTH_STENCIL_DIRTY
89};
90
91struct vg_context
92{
93   struct st_context_iface iface;
94   struct mapi_table *dispatch;
95
96   struct pipe_context *pipe;
97   enum pipe_format ds_format;
98
99   struct {
100      struct vg_state vg;
101      VGbitfield dirty;
102   } state;
103
104   VGErrorCode _error;
105
106   struct st_framebuffer *draw_buffer;
107   int32_t draw_buffer_invalid;
108
109   struct cso_hash *owned_objects[VG_OBJECT_LAST];
110
111   struct {
112      struct pipe_resource *cbuf;
113      struct pipe_sampler_state sampler;
114
115      struct vg_shader *union_fs;
116      struct vg_shader *intersect_fs;
117      struct vg_shader *subtract_fs;
118      struct vg_shader *set_fs;
119   } mask;
120
121   struct cso_context *cso_context;
122
123   struct renderer *renderer;
124   struct shaders_cache *sc;
125   struct shader *shader;
126
127   struct pipe_sampler_state blend_sampler;
128   struct vg_paint *default_paint;
129
130   struct blit_state *blit;
131};
132
133struct vg_object {
134   enum vg_object_type type;
135   struct vg_context *ctx;
136};
137void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
138VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
139
140struct vg_context *vg_create_context(struct pipe_context *pipe,
141                                     const void *visual,
142                                     struct vg_context *share);
143void vg_destroy_context(struct vg_context *ctx);
144struct vg_context *vg_current_context(void);
145void vg_set_current_context(struct vg_context *ctx);
146
147VGboolean vg_context_is_object_valid(struct vg_context *ctx,
148                                     enum vg_object_type type,
149                                     void *ptr);
150void vg_context_add_object(struct vg_context *ctx,
151                           enum vg_object_type type,
152                           void *ptr);
153void vg_context_remove_object(struct vg_context *ctx,
154                              enum vg_object_type type,
155                              void *ptr);
156
157void vg_validate_state(struct vg_context *ctx);
158
159void vg_set_error(struct vg_context *ctx,
160                  VGErrorCode code);
161
162struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx);
163struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
164
165struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx);
166
167VGboolean vg_get_paint_matrix(struct vg_context *ctx,
168                              const struct matrix *paint_to_user,
169                              const struct matrix *user_to_surface,
170                              struct matrix *mat);
171
172static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)
173{
174   void *aligned = align_pointer(ptr, alignment);
175   return (ptr == aligned) ? VG_TRUE : VG_FALSE;
176}
177
178static INLINE VGboolean is_aligned(const void *ptr)
179{
180   return is_aligned_to(ptr, 4);
181}
182
183static INLINE void vg_shift_rectx(VGfloat coords[4],
184                                 const VGfloat *bounds,
185                                 const VGfloat shift)
186{
187   coords[0] += shift;
188   coords[2] -= shift;
189   if (bounds) {
190      coords[2] = MIN2(coords[2], bounds[2]);
191      /* bound x/y + width/height */
192      if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
193         coords[2] = (bounds[0] + bounds[2]) - coords[0];
194      }
195   }
196}
197
198static INLINE void vg_shift_recty(VGfloat coords[4],
199                                 const VGfloat *bounds,
200                                 const VGfloat shift)
201{
202   coords[1] += shift;
203   coords[3] -= shift;
204   if (bounds) {
205      coords[3] = MIN2(coords[3], bounds[3]);
206      if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
207         coords[3] = (bounds[1] + bounds[3]) - coords[1];
208      }
209   }
210}
211
212static INLINE void vg_bound_rect(VGfloat coords[4],
213                                 const VGfloat bounds[4],
214                                 VGfloat shift[4])
215{
216   /* if outside the bounds */
217   if (coords[0] > (bounds[0] + bounds[2]) ||
218       coords[1] > (bounds[1] + bounds[3]) ||
219       (coords[0] + coords[2]) < bounds[0] ||
220       (coords[1] + coords[3]) < bounds[1]) {
221      coords[0] = 0.f;
222      coords[1] = 0.f;
223      coords[2] = 0.f;
224      coords[3] = 0.f;
225      shift[0] = 0.f;
226      shift[1] = 0.f;
227      return;
228   }
229
230   /* bound x */
231   if (coords[0] < bounds[0]) {
232      shift[0] = bounds[0] - coords[0];
233      coords[2] -= shift[0];
234      coords[0] = bounds[0];
235   } else
236      shift[0] = 0.f;
237
238   /* bound y */
239   if (coords[1] < bounds[1]) {
240      shift[1] = bounds[1] - coords[1];
241      coords[3] -= shift[1];
242      coords[1] = bounds[1];
243   } else
244      shift[1] = 0.f;
245
246   shift[2] = bounds[2] - coords[2];
247   shift[3] = bounds[3] - coords[3];
248   /* bound width/height */
249   coords[2] = MIN2(coords[2], bounds[2]);
250   coords[3] = MIN2(coords[3], bounds[3]);
251
252   /* bound x/y + width/height */
253   if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
254      coords[2] = (bounds[0] + bounds[2]) - coords[0];
255   }
256   if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
257      coords[3] = (bounds[1] + bounds[3]) - coords[1];
258   }
259
260   /* if outside the bounds */
261   if ((coords[0] + coords[2]) < bounds[0] ||
262       (coords[1] + coords[3]) < bounds[1]) {
263      coords[0] = 0.f;
264      coords[1] = 0.f;
265      coords[2] = 0.f;
266      coords[3] = 0.f;
267      return;
268   }
269}
270
271#endif
272