vg_context.h revision 287c94ea4987033f9c99a2f91c5750c9083504ca 
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;
45
46struct st_renderbuffer {
47   enum pipe_format   format;
48   struct pipe_surface *surface;
49   struct pipe_resource *texture;
50   VGint width, height;
51};
52
53struct st_framebuffer {
54   VGint width, height;
55   struct st_renderbuffer *strb;
56   struct st_renderbuffer *dsrb;
57
58   struct pipe_sampler_view *alpha_mask_view;
59
60   struct pipe_sampler_view *blend_texture_view;
61
62
63   struct st_framebuffer_iface *iface;
64   enum st_attachment_type strb_att;
65
66   void *privateData;
67};
68
69enum vg_object_type {
70   VG_OBJECT_UNKNOWN = 0,
71   VG_OBJECT_PAINT,
72   VG_OBJECT_IMAGE,
73   VG_OBJECT_MASK,
74   VG_OBJECT_FONT,
75   VG_OBJECT_PATH,
76
77   VG_OBJECT_LAST
78};
79enum dirty_state {
80   NONE_DIRTY          = 0<<0,
81   BLEND_DIRTY         = 1<<1,
82   RASTERIZER_DIRTY    = 1<<2,
83   VIEWPORT_DIRTY      = 1<<3,
84   VS_DIRTY            = 1<<4,
85   DEPTH_STENCIL_DIRTY = 1<<5,
86   ALL_DIRTY           = BLEND_DIRTY | RASTERIZER_DIRTY |
87   VIEWPORT_DIRTY | VS_DIRTY | DEPTH_STENCIL_DIRTY
88};
89
90struct vg_context
91{
92   struct st_context_iface iface;
93
94   struct pipe_context *pipe;
95
96   struct {
97      struct vg_state vg;
98      struct {
99         struct pipe_blend_state blend;
100         struct pipe_rasterizer_state rasterizer;
101         struct pipe_shader_state vs_state;
102         struct pipe_depth_stencil_alpha_state dsa;
103         struct pipe_framebuffer_state fb;
104      } g3d;
105      VGbitfield dirty;
106   } state;
107
108   VGErrorCode _error;
109
110   struct st_framebuffer *draw_buffer;
111   int32_t draw_buffer_invalid;
112
113   struct cso_hash *owned_objects[VG_OBJECT_LAST];
114
115   struct {
116      struct pipe_shader_state vert_shader;
117      struct pipe_shader_state frag_shader;
118      struct pipe_rasterizer_state raster;
119      void *fs;
120      float vertices[4][2][4];  /**< vertex pos + color */
121   } clear;
122
123   struct {
124      struct pipe_resource *cbuf;
125      struct pipe_sampler_state sampler;
126
127      struct vg_shader *union_fs;
128      struct vg_shader *intersect_fs;
129      struct vg_shader *subtract_fs;
130      struct vg_shader *set_fs;
131   } mask;
132
133   struct vg_shader *pass_through_depth_fs;
134
135   struct cso_context *cso_context;
136
137   struct pipe_resource *stencil_quad;
138   VGfloat stencil_vertices[4][2][4];
139
140   struct renderer *renderer;
141   struct shaders_cache *sc;
142   struct shader *shader;
143
144   struct pipe_sampler_state blend_sampler;
145   struct {
146      struct pipe_resource *buffer;
147      void *color_matrix_fs;
148   } filter;
149   struct vg_paint *default_paint;
150
151   struct blit_state *blit;
152
153   struct vg_shader *plain_vs;
154   struct vg_shader *clear_vs;
155   struct vg_shader *texture_vs;
156   struct pipe_resource *vs_const_buffer;
157   struct pipe_vertex_element velems[2];
158};
159
160struct vg_object {
161   enum vg_object_type type;
162   struct vg_context *ctx;
163};
164void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
165VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
166
167struct vg_context *vg_create_context(struct pipe_context *pipe,
168                                     const void *visual,
169                                     struct vg_context *share);
170void vg_destroy_context(struct vg_context *ctx);
171struct vg_context *vg_current_context(void);
172void vg_set_current_context(struct vg_context *ctx);
173
174VGboolean vg_context_is_object_valid(struct vg_context *ctx,
175                                     enum vg_object_type type,
176                                     void *ptr);
177void vg_context_add_object(struct vg_context *ctx,
178                           enum vg_object_type type,
179                           void *ptr);
180void vg_context_remove_object(struct vg_context *ctx,
181                              enum vg_object_type type,
182                              void *ptr);
183
184void vg_validate_state(struct vg_context *ctx);
185
186void vg_set_error(struct vg_context *ctx,
187                  VGErrorCode code);
188
189void vg_prepare_blend_surface(struct vg_context *ctx);
190void vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
191
192
193static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)
194{
195   void *aligned = align_pointer(ptr, alignment);
196   return (ptr == aligned) ? VG_TRUE : VG_FALSE;
197}
198
199static INLINE VGboolean is_aligned(const void *ptr)
200{
201   return is_aligned_to(ptr, 4);
202}
203
204static INLINE void vg_shift_rectx(VGfloat coords[4],
205                                 const VGfloat *bounds,
206                                 const VGfloat shift)
207{
208   coords[0] += shift;
209   coords[2] -= shift;
210   if (bounds) {
211      coords[2] = MIN2(coords[2], bounds[2]);
212      /* bound x/y + width/height */
213      if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
214         coords[2] = (bounds[0] + bounds[2]) - coords[0];
215      }
216   }
217}
218
219static INLINE void vg_shift_recty(VGfloat coords[4],
220                                 const VGfloat *bounds,
221                                 const VGfloat shift)
222{
223   coords[1] += shift;
224   coords[3] -= shift;
225   if (bounds) {
226      coords[3] = MIN2(coords[3], bounds[3]);
227      if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
228         coords[3] = (bounds[1] + bounds[3]) - coords[1];
229      }
230   }
231}
232
233static INLINE void vg_bound_rect(VGfloat coords[4],
234                                 const VGfloat bounds[4],
235                                 VGfloat shift[4])
236{
237   /* if outside the bounds */
238   if (coords[0] > (bounds[0] + bounds[2]) ||
239       coords[1] > (bounds[1] + bounds[3]) ||
240       (coords[0] + coords[2]) < bounds[0] ||
241       (coords[1] + coords[3]) < bounds[1]) {
242      coords[0] = 0.f;
243      coords[1] = 0.f;
244      coords[2] = 0.f;
245      coords[3] = 0.f;
246      shift[0] = 0.f;
247      shift[1] = 0.f;
248      return;
249   }
250
251   /* bound x */
252   if (coords[0] < bounds[0]) {
253      shift[0] = bounds[0] - coords[0];
254      coords[2] -= shift[0];
255      coords[0] = bounds[0];
256   } else
257      shift[0] = 0.f;
258
259   /* bound y */
260   if (coords[1] < bounds[1]) {
261      shift[1] = bounds[1] - coords[1];
262      coords[3] -= shift[1];
263      coords[1] = bounds[1];
264   } else
265      shift[1] = 0.f;
266
267   shift[2] = bounds[2] - coords[2];
268   shift[3] = bounds[3] - coords[3];
269   /* bound width/height */
270   coords[2] = MIN2(coords[2], bounds[2]);
271   coords[3] = MIN2(coords[3], bounds[3]);
272
273   /* bound x/y + width/height */
274   if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
275      coords[2] = (bounds[0] + bounds[2]) - coords[0];
276   }
277   if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
278      coords[3] = (bounds[1] + bounds[3]) - coords[1];
279   }
280
281   /* if outside the bounds */
282   if ((coords[0] + coords[2]) < bounds[0] ||
283       (coords[1] + coords[3]) < bounds[1]) {
284      coords[0] = 0.f;
285      coords[1] = 0.f;
286      coords[2] = 0.f;
287      coords[3] = 0.f;
288      return;
289   }
290}
291
292void *vg_plain_vs(struct vg_context *ctx);
293void *vg_clear_vs(struct vg_context *ctx);
294void *vg_texture_vs(struct vg_context *ctx);
295typedef enum {
296   VEGA_Y0_TOP,
297   VEGA_Y0_BOTTOM
298} VegaOrientation;
299void vg_set_viewport(struct vg_context *ctx, VegaOrientation orientation);
300
301#endif
302