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