vg_context.h revision 75143ef05576ee9f25ee176bc28c3c4d03705bf5 
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 *alpha_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   VIEWPORT_DIRTY      = 1<<3,
85   VS_DIRTY            = 1<<4,
86   DEPTH_STENCIL_DIRTY = 1<<5,
87   ALL_DIRTY           = BLEND_DIRTY | RASTERIZER_DIRTY |
88   VIEWPORT_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
98   struct {
99      struct vg_state vg;
100      struct {
101         struct pipe_blend_state blend;
102         struct pipe_rasterizer_state rasterizer;
103         struct pipe_shader_state vs_state;
104         struct pipe_depth_stencil_alpha_state dsa;
105         struct pipe_framebuffer_state fb;
106      } g3d;
107      VGbitfield dirty;
108   } state;
109
110   VGErrorCode _error;
111
112   struct st_framebuffer *draw_buffer;
113   int32_t draw_buffer_invalid;
114
115   struct cso_hash *owned_objects[VG_OBJECT_LAST];
116
117   struct {
118      struct pipe_shader_state vert_shader;
119      struct pipe_shader_state frag_shader;
120      struct pipe_rasterizer_state raster;
121      void *fs;
122      float vertices[4][2][4];  /**< vertex pos + color */
123   } clear;
124
125   struct {
126      struct pipe_resource *cbuf;
127      struct pipe_sampler_state sampler;
128
129      struct vg_shader *union_fs;
130      struct vg_shader *intersect_fs;
131      struct vg_shader *subtract_fs;
132      struct vg_shader *set_fs;
133   } mask;
134
135   struct vg_shader *pass_through_depth_fs;
136
137   struct cso_context *cso_context;
138
139   struct pipe_resource *stencil_quad;
140   VGfloat stencil_vertices[4][2][4];
141
142   struct renderer *renderer;
143   struct shaders_cache *sc;
144   struct shader *shader;
145
146   struct pipe_sampler_state blend_sampler;
147   struct {
148      struct pipe_resource *buffer;
149      void *color_matrix_fs;
150   } filter;
151   struct vg_paint *default_paint;
152
153   struct blit_state *blit;
154
155   struct vg_shader *plain_vs;
156   struct vg_shader *clear_vs;
157   struct vg_shader *texture_vs;
158   struct pipe_resource *vs_const_buffer;
159   struct pipe_vertex_element velems[2];
160};
161
162struct vg_object {
163   enum vg_object_type type;
164   struct vg_context *ctx;
165};
166void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
167VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
168
169struct vg_context *vg_create_context(struct pipe_context *pipe,
170                                     const void *visual,
171                                     struct vg_context *share);
172void vg_destroy_context(struct vg_context *ctx);
173struct vg_context *vg_current_context(void);
174void vg_set_current_context(struct vg_context *ctx);
175
176VGboolean vg_context_is_object_valid(struct vg_context *ctx,
177                                     enum vg_object_type type,
178                                     void *ptr);
179void vg_context_add_object(struct vg_context *ctx,
180                           enum vg_object_type type,
181                           void *ptr);
182void vg_context_remove_object(struct vg_context *ctx,
183                              enum vg_object_type type,
184                              void *ptr);
185
186void vg_validate_state(struct vg_context *ctx);
187
188void vg_set_error(struct vg_context *ctx,
189                  VGErrorCode code);
190
191void vg_prepare_blend_surface(struct vg_context *ctx);
192void vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
193
194
195static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)
196{
197   void *aligned = align_pointer(ptr, alignment);
198   return (ptr == aligned) ? VG_TRUE : VG_FALSE;
199}
200
201static INLINE VGboolean is_aligned(const void *ptr)
202{
203   return is_aligned_to(ptr, 4);
204}
205
206static INLINE void vg_shift_rectx(VGfloat coords[4],
207                                 const VGfloat *bounds,
208                                 const VGfloat shift)
209{
210   coords[0] += shift;
211   coords[2] -= shift;
212   if (bounds) {
213      coords[2] = MIN2(coords[2], bounds[2]);
214      /* bound x/y + width/height */
215      if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
216         coords[2] = (bounds[0] + bounds[2]) - coords[0];
217      }
218   }
219}
220
221static INLINE void vg_shift_recty(VGfloat coords[4],
222                                 const VGfloat *bounds,
223                                 const VGfloat shift)
224{
225   coords[1] += shift;
226   coords[3] -= shift;
227   if (bounds) {
228      coords[3] = MIN2(coords[3], bounds[3]);
229      if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
230         coords[3] = (bounds[1] + bounds[3]) - coords[1];
231      }
232   }
233}
234
235static INLINE void vg_bound_rect(VGfloat coords[4],
236                                 const VGfloat bounds[4],
237                                 VGfloat shift[4])
238{
239   /* if outside the bounds */
240   if (coords[0] > (bounds[0] + bounds[2]) ||
241       coords[1] > (bounds[1] + bounds[3]) ||
242       (coords[0] + coords[2]) < bounds[0] ||
243       (coords[1] + coords[3]) < bounds[1]) {
244      coords[0] = 0.f;
245      coords[1] = 0.f;
246      coords[2] = 0.f;
247      coords[3] = 0.f;
248      shift[0] = 0.f;
249      shift[1] = 0.f;
250      return;
251   }
252
253   /* bound x */
254   if (coords[0] < bounds[0]) {
255      shift[0] = bounds[0] - coords[0];
256      coords[2] -= shift[0];
257      coords[0] = bounds[0];
258   } else
259      shift[0] = 0.f;
260
261   /* bound y */
262   if (coords[1] < bounds[1]) {
263      shift[1] = bounds[1] - coords[1];
264      coords[3] -= shift[1];
265      coords[1] = bounds[1];
266   } else
267      shift[1] = 0.f;
268
269   shift[2] = bounds[2] - coords[2];
270   shift[3] = bounds[3] - coords[3];
271   /* bound width/height */
272   coords[2] = MIN2(coords[2], bounds[2]);
273   coords[3] = MIN2(coords[3], bounds[3]);
274
275   /* bound x/y + width/height */
276   if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
277      coords[2] = (bounds[0] + bounds[2]) - coords[0];
278   }
279   if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
280      coords[3] = (bounds[1] + bounds[3]) - coords[1];
281   }
282
283   /* if outside the bounds */
284   if ((coords[0] + coords[2]) < bounds[0] ||
285       (coords[1] + coords[3]) < bounds[1]) {
286      coords[0] = 0.f;
287      coords[1] = 0.f;
288      coords[2] = 0.f;
289      coords[3] = 0.f;
290      return;
291   }
292}
293
294void *vg_plain_vs(struct vg_context *ctx);
295void *vg_clear_vs(struct vg_context *ctx);
296void *vg_texture_vs(struct vg_context *ctx);
297typedef enum {
298   VEGA_Y0_TOP,
299   VEGA_Y0_BOTTOM
300} VegaOrientation;
301void vg_set_viewport(struct vg_context *ctx, VegaOrientation orientation);
302
303#endif
304