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
  37 #include "cso_cache/cso_hash.h"
  38 #include "cso_cache/cso_context.h"
  39
  40 struct renderer;
  41 struct shaders_cache;
  42 struct shader;
  43 struct vg_shader;
  44
  45 struct st_renderbuffer {
  46    enum pipe_format   format;
  47    struct pipe_surface *surface;
  48    struct pipe_texture *texture;
  49    VGint width, height;
  50 };
  51
  52 struct st_framebuffer {
  53    VGint init_width, init_height;
  54    struct st_renderbuffer *strb;
  55    struct st_renderbuffer *dsrb;
  56
  57    struct pipe_texture *alpha_mask;
  58
  59    struct pipe_texture *blend_texture;
  60
  61    void *privateData;
  62 };
  63
  64 enum vg_object_type {
  65    VG_OBJECT_UNKNOWN = 0,
  66    VG_OBJECT_PAINT,
  67    VG_OBJECT_IMAGE,
  68    VG_OBJECT_MASK,
  69    VG_OBJECT_FONT,
  70    VG_OBJECT_PATH,
  71
  72    VG_OBJECT_LAST
  73 };
  74 enum dirty_state {
  75    NONE_DIRTY          = 0<<0,
  76    BLEND_DIRTY         = 1<<1,
  77    RASTERIZER_DIRTY    = 1<<2,
  78    VIEWPORT_DIRTY      = 1<<3,
  79    VS_DIRTY            = 1<<4,
  80    DEPTH_STENCIL_DIRTY = 1<<5,
  81    ALL_DIRTY           = BLEND_DIRTY | RASTERIZER_DIRTY |
  82    VIEWPORT_DIRTY | VS_DIRTY | DEPTH_STENCIL_DIRTY
  83 };
  84
  85 struct vg_context
  86 {
  87    struct pipe_context *pipe;
  88
  89    struct {
  90       struct vg_state vg;
  91       struct {
  92          struct pipe_blend_state blend;
  93          struct pipe_rasterizer_state rasterizer;
  94          struct pipe_shader_state vs_state;
  95          struct pipe_depth_stencil_alpha_state dsa;
  96          struct pipe_framebuffer_state fb;
  97       } g3d;
  98       VGbitfield dirty;
  99    } state;
 100
 101    VGErrorCode _error;
 102
 103    struct st_framebuffer *draw_buffer;
 104
 105    struct cso_hash *owned_objects[VG_OBJECT_LAST];
 106
 107    struct {
 108       struct pipe_shader_state vert_shader;
 109       struct pipe_shader_state frag_shader;
 110       struct pipe_rasterizer_state raster;
 111       void *fs;
 112       float vertices[4][2][4];  /**< vertex pos + color */
 113    } clear;
 114
 115    struct {
 116       struct pipe_constant_buffer cbuf;
 117       struct pipe_sampler_state sampler;
 118
 119       struct vg_shader *union_fs;
 120       struct vg_shader *intersect_fs;
 121       struct vg_shader *subtract_fs;
 122       struct vg_shader *set_fs;
 123    } mask;
 124
 125    struct vg_shader *pass_through_depth_fs;
 126
 127    struct cso_context *cso_context;
 128
 129    struct pipe_buffer *stencil_quad;
 130    VGfloat stencil_vertices[4][2][4];
 131
 132    struct renderer *renderer;
 133    struct shaders_cache *sc;
 134    struct shader *shader;
 135
 136    struct pipe_sampler_state blend_sampler;
 137    struct {
 138       struct pipe_constant_buffer buffer;
 139       void *color_matrix_fs;
 140    } filter;
 141    struct vg_paint *default_paint;
 142
 143    struct blit_state *blit;
 144
 145    struct vg_shader *plain_vs;
 146    struct vg_shader *clear_vs;
 147    struct vg_shader *texture_vs;
 148    struct pipe_constant_buffer vs_const_buffer;
 149 };
 150
 151 struct vg_object {
 152    enum vg_object_type type;
 153    struct vg_context *ctx;
 154 };
 155 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
 156 VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
 157
 158 struct vg_context *vg_create_context(struct pipe_context *pipe,
 159                                      const void *visual,
 160                                      struct vg_context *share);
 161 void vg_destroy_context(struct vg_context *ctx);
 162 struct vg_context *vg_current_context(void);
 163 void vg_set_current_context(struct vg_context *ctx);
 164
 165 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
 166                                      enum vg_object_type type,
 167                                      void *ptr);
 168 void vg_context_add_object(struct vg_context *ctx,
 169                            enum vg_object_type type,
 170                            void *ptr);
 171 void vg_context_remove_object(struct vg_context *ctx,
 172                               enum vg_object_type type,
 173                               void *ptr);
 174
 175 void vg_validate_state(struct vg_context *ctx);
 176
 177 void vg_set_error(struct vg_context *ctx,
 178                   VGErrorCode code);
 179
 180 void vg_prepare_blend_surface(struct vg_context *ctx);
 181 void vg_prepare_blend_surface_from_mask(struct vg_context *ctx);
 182
 183
 184 static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)
 185 {
 186    void *aligned = align_pointer(ptr, alignment);
 187    return (ptr == aligned) ? VG_TRUE : VG_FALSE;
 188 }
 189
 190 static INLINE VGboolean is_aligned(const void *ptr)
 191 {
 192    return is_aligned_to(ptr, 4);
 193 }
 194
 195 static INLINE void vg_shift_rectx(VGfloat coords[4],
 196                                  const VGfloat *bounds,
 197                                  const VGfloat shift)
 198 {
 199    coords[0] += shift;
 200    coords[2] -= shift;
 201    if (bounds) {
 202       coords[2] = MIN2(coords[2], bounds[2]);
 203       /* bound x/y + width/height */
 204       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 205          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 206       }
 207    }
 208 }
 209
 210 static INLINE void vg_shift_recty(VGfloat coords[4],
 211                                  const VGfloat *bounds,
 212                                  const VGfloat shift)
 213 {
 214    coords[1] += shift;
 215    coords[3] -= shift;
 216    if (bounds) {
 217       coords[3] = MIN2(coords[3], bounds[3]);
 218       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 219          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 220       }
 221    }
 222 }
 223
 224 static INLINE void vg_bound_rect(VGfloat coords[4],
 225                                  const VGfloat bounds[4],
 226                                  VGfloat shift[4])
 227 {
 228    /* if outside the bounds */
 229    if (coords[0] > (bounds[0] + bounds[2]) ||
 230        coords[1] > (bounds[1] + bounds[3]) ||
 231        (coords[0] + coords[2]) < bounds[0] ||
 232        (coords[1] + coords[3]) < bounds[1]) {
 233       coords[0] = 0.f;
 234       coords[1] = 0.f;
 235       coords[2] = 0.f;
 236       coords[3] = 0.f;
 237       shift[0] = 0.f;
 238       shift[1] = 0.f;
 239       return;
 240    }
 241
 242    /* bound x */
 243    if (coords[0] < bounds[0]) {
 244       shift[0] = bounds[0] - coords[0];
 245       coords[2] -= shift[0];
 246       coords[0] = bounds[0];
 247    } else
 248       shift[0] = 0.f;
 249
 250    /* bound y */
 251    if (coords[1] < bounds[1]) {
 252       shift[1] = bounds[1] - coords[1];
 253       coords[3] -= shift[1];
 254       coords[1] = bounds[1];
 255    } else
 256       shift[1] = 0.f;
 257
 258    shift[2] = bounds[2] - coords[2];
 259    shift[3] = bounds[3] - coords[3];
 260    /* bound width/height */
 261    coords[2] = MIN2(coords[2], bounds[2]);
 262    coords[3] = MIN2(coords[3], bounds[3]);
 263
 264    /* bound x/y + width/height */
 265    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 266       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 267    }
 268    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 269       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 270    }
 271
 272    /* if outside the bounds */
 273    if ((coords[0] + coords[2]) < bounds[0] ||
 274        (coords[1] + coords[3]) < bounds[1]) {
 275       coords[0] = 0.f;
 276       coords[1] = 0.f;
 277       coords[2] = 0.f;
 278       coords[3] = 0.f;
 279       return;
 280    }
 281 }
 282
 283 void *vg_plain_vs(struct vg_context *ctx);
 284 void *vg_clear_vs(struct vg_context *ctx);
 285 void *vg_texture_vs(struct vg_context *ctx);
 286 typedef enum {
 287    VEGA_Y0_TOP,
 288    VEGA_Y0_BOTTOM
 289 } VegaOrientation;
 290 void vg_set_viewport(struct vg_context *ctx, VegaOrientation orientation);
 291
 292 #endif