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