src/gallium/state_trackers/vega/vg_context.h

   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
 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
 189 static INLINE VGboolean is_aligned(const void *ptr)
 190 {
 191    return is_aligned_to(ptr, 4);
 192 }
 193
 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
 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
 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