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
41 struct renderer;
42 struct shaders_cache;
43 struct shader;
44 struct vg_shader;
45 struct mapi_table;
46
47 struct st_renderbuffer {
48 enum pipe_format format;
49 struct pipe_surface *surface;
50 struct pipe_resource *texture;
51 VGint width, height;
52 };
53
54 struct 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 int32_t stamp;
69 int32_t iface_stamp;
70 };
71
72 enum vg_object_type {
73 VG_OBJECT_UNKNOWN = 0,
74 VG_OBJECT_PAINT,
75 VG_OBJECT_IMAGE,
76 VG_OBJECT_MASK,
77 VG_OBJECT_FONT,
78 VG_OBJECT_PATH,
79
80 VG_OBJECT_LAST
81 };
82 enum dirty_state {
83 BLEND_DIRTY = 1 << 0,
84 FRAMEBUFFER_DIRTY = 1 << 1,
85 DEPTH_STENCIL_DIRTY = 1 << 2,
86 PAINT_DIRTY = 1 << 3,
87
88 ALL_DIRTY = BLEND_DIRTY |
89 FRAMEBUFFER_DIRTY |
90 DEPTH_STENCIL_DIRTY |
91 PAINT_DIRTY
92 };
93
94 struct vg_context
95 {
96 struct st_context_iface iface;
97 struct mapi_table *dispatch;
98
99 struct pipe_context *pipe;
100 enum pipe_format ds_format;
101
102 struct {
103 struct vg_state vg;
104 VGbitfield dirty;
105 } state;
106
107 VGErrorCode _error;
108
109 struct st_framebuffer *draw_buffer;
110
111 struct cso_hash *owned_objects[VG_OBJECT_LAST];
112
113 struct {
114 struct pipe_resource *cbuf;
115 struct pipe_sampler_state sampler;
116
117 struct vg_shader *union_fs;
118 struct vg_shader *intersect_fs;
119 struct vg_shader *subtract_fs;
120 struct vg_shader *set_fs;
121 } mask;
122
123 struct cso_context *cso_context;
124
125 struct renderer *renderer;
126 struct shaders_cache *sc;
127 struct shader *shader;
128
129 struct pipe_sampler_state blend_sampler;
130 struct vg_paint *default_paint;
131
132 struct blit_state *blit;
133
134 int32_t draw_stamp;
135 };
136
137
138 /**
139 * Base class for VG objects like paths, images, fonts.
140 */
141 struct vg_object {
142 enum vg_object_type type;
143 VGHandle handle;
144 struct vg_context *ctx;
145 };
146
147
148 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
149 void vg_free_object(struct vg_object *obj);
150
151 VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type);
152
153 struct vg_context *vg_create_context(struct pipe_context *pipe,
154 const void *visual,
155 struct vg_context *share);
156 void vg_destroy_context(struct vg_context *ctx);
157 struct vg_context *vg_current_context(void);
158 void vg_set_current_context(struct vg_context *ctx);
159
160 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
161 enum vg_object_type type,
162 VGHandle object);
163 void vg_context_add_object(struct vg_context *ctx,
164 struct vg_object *obj);
165 void vg_context_remove_object(struct vg_context *ctx,
166 struct vg_object *obj);
167
168 void vg_validate_state(struct vg_context *ctx);
169
170 void vg_set_error(struct vg_context *ctx,
171 VGErrorCode code);
172
173 struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx);
174 struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
175
176 struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx);
177
178 VGboolean vg_get_paint_matrix(struct vg_context *ctx,
179 const struct matrix *paint_to_user,
180 const struct matrix *user_to_surface,
181 struct matrix *mat);
182
is_aligned_to(const void * ptr,VGbyte alignment)183 static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)
184 {
185 void *aligned = align_pointer(ptr, alignment);
186 return (ptr == aligned) ? VG_TRUE : VG_FALSE;
187 }
188
is_aligned(const void * ptr)189 static INLINE VGboolean is_aligned(const void *ptr)
190 {
191 return is_aligned_to(ptr, 4);
192 }
193
vg_shift_rectx(VGfloat coords[4],const VGfloat * bounds,const VGfloat shift)194 static INLINE void vg_shift_rectx(VGfloat coords[4],
195 const VGfloat *bounds,
196 const VGfloat shift)
197 {
198 coords[0] += shift;
199 coords[2] -= shift;
200 if (bounds) {
201 coords[2] = MIN2(coords[2], bounds[2]);
202 /* bound x/y + width/height */
203 if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
204 coords[2] = (bounds[0] + bounds[2]) - coords[0];
205 }
206 }
207 }
208
vg_shift_recty(VGfloat coords[4],const VGfloat * bounds,const VGfloat shift)209 static INLINE void vg_shift_recty(VGfloat coords[4],
210 const VGfloat *bounds,
211 const VGfloat shift)
212 {
213 coords[1] += shift;
214 coords[3] -= shift;
215 if (bounds) {
216 coords[3] = MIN2(coords[3], bounds[3]);
217 if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
218 coords[3] = (bounds[1] + bounds[3]) - coords[1];
219 }
220 }
221 }
222
vg_bound_rect(VGfloat coords[4],const VGfloat bounds[4],VGfloat shift[4])223 static INLINE void vg_bound_rect(VGfloat coords[4],
224 const VGfloat bounds[4],
225 VGfloat shift[4])
226 {
227 /* if outside the bounds */
228 if (coords[0] > (bounds[0] + bounds[2]) ||
229 coords[1] > (bounds[1] + bounds[3]) ||
230 (coords[0] + coords[2]) < bounds[0] ||
231 (coords[1] + coords[3]) < bounds[1]) {
232 coords[0] = 0.f;
233 coords[1] = 0.f;
234 coords[2] = 0.f;
235 coords[3] = 0.f;
236 shift[0] = 0.f;
237 shift[1] = 0.f;
238 return;
239 }
240
241 /* bound x */
242 if (coords[0] < bounds[0]) {
243 shift[0] = bounds[0] - coords[0];
244 coords[2] -= shift[0];
245 coords[0] = bounds[0];
246 } else
247 shift[0] = 0.f;
248
249 /* bound y */
250 if (coords[1] < bounds[1]) {
251 shift[1] = bounds[1] - coords[1];
252 coords[3] -= shift[1];
253 coords[1] = bounds[1];
254 } else
255 shift[1] = 0.f;
256
257 shift[2] = bounds[2] - coords[2];
258 shift[3] = bounds[3] - coords[3];
259 /* bound width/height */
260 coords[2] = MIN2(coords[2], bounds[2]);
261 coords[3] = MIN2(coords[3], bounds[3]);
262
263 /* bound x/y + width/height */
264 if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
265 coords[2] = (bounds[0] + bounds[2]) - coords[0];
266 }
267 if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
268 coords[3] = (bounds[1] + bounds[3]) - coords[1];
269 }
270
271 /* if outside the bounds */
272 if ((coords[0] + coords[2]) < bounds[0] ||
273 (coords[1] + coords[3]) < bounds[1]) {
274 coords[0] = 0.f;
275 coords[1] = 0.f;
276 coords[2] = 0.f;
277 coords[3] = 0.f;
278 return;
279 }
280 }
281
282 #endif
283