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
  46 struct st_renderbuffer {
  47    enum pipe_format   format;
  48    struct pipe_surface *surface;
  49    struct pipe_resource *texture;
  50    VGint width, height;
  51 };
  52
  53 struct 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
  69 enum 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 };
  79 enum 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
  90 struct 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
 160 struct vg_object {
 161    enum vg_object_type type;
 162    struct vg_context *ctx;
 163 };
 164 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
 165 VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
 166
 167 struct vg_context *vg_create_context(struct pipe_context *pipe,
 168                                      const void *visual,
 169                                      struct vg_context *share);
 170 void vg_destroy_context(struct vg_context *ctx);
 171 struct vg_context *vg_current_context(void);
 172 void vg_set_current_context(struct vg_context *ctx);
 173
 174 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
 175                                      enum vg_object_type type,
 176                                      void *ptr);
 177 void vg_context_add_object(struct vg_context *ctx,
 178                            enum vg_object_type type,
 179                            void *ptr);
 180 void vg_context_remove_object(struct vg_context *ctx,
 181                               enum vg_object_type type,
 182                               void *ptr);
 183
 184 void vg_validate_state(struct vg_context *ctx);
 185
 186 void vg_set_error(struct vg_context *ctx,
 187                   VGErrorCode code);
 188
 189 void vg_prepare_blend_surface(struct vg_context *ctx);
 190 void vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
 191
 192
 193 static 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
 199 static INLINE VGboolean is_aligned(const void *ptr)
 200 {
 201    return is_aligned_to(ptr, 4);
 202 }
 203
 204 static 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
 219 static 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
 233 static 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
 292 void *vg_plain_vs(struct vg_context *ctx);
 293 void *vg_clear_vs(struct vg_context *ctx);
 294 void *vg_texture_vs(struct vg_context *ctx);
 295 typedef enum {
 296    VEGA_Y0_TOP,
 297    VEGA_Y0_BOTTOM
 298 } VegaOrientation;
 299 void vg_set_viewport(struct vg_context *ctx, VegaOrientation orientation);
 300
 301 #endif