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