src/gallium/state_trackers/xa/xa_composite.c

   1 /**********************************************************
   2  * Copyright 2009-2011 VMware, Inc. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  *********************************************************
  25  * Authors:
  26  * Zack Rusin <zackr-at-vmware-dot-com>
  27  * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  28  */
  29
  30 #include "xa_composite.h"
  31 #include "xa_context.h"
  32 #include "xa_priv.h"
  33 #include "cso_cache/cso_context.h"
  34 #include "util/u_sampler.h"
  35 #include "util/u_inlines.h"
  36
  37
  38 /*XXX also in Xrender.h but the including it here breaks compilition */
  39 #define XFixedToDouble(f)    (((double) (f)) / 65536.)
  40
  41 struct xa_composite_blend {
  42     enum xa_composite_op op : 8;
  43
  44     unsigned alpha_dst : 4;
  45     unsigned alpha_src : 4;
  46
  47     unsigned rgb_src : 8;    /**< PIPE_BLENDFACTOR_x */
  48     unsigned rgb_dst : 8;    /**< PIPE_BLENDFACTOR_x */
  49 };
  50
  51 #define XA_BLEND_OP_OVER 3
  52 static const struct xa_composite_blend xa_blends[] = {
  53     { xa_op_clear,
  54       0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO},
  55     { xa_op_src,
  56       0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ZERO},
  57     { xa_op_dst,
  58       0, 0, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ONE},
  59     { xa_op_over,
  60       0, 1, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
  61     { xa_op_over_reverse,
  62       1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE},
  63     { xa_op_in,
  64       1, 0, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
  65     { xa_op_in_reverse,
  66       0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_SRC_ALPHA},
  67     { xa_op_out,
  68       1, 0, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ZERO},
  69     { xa_op_out_reverse,
  70       0, 1, PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
  71     { xa_op_atop,
  72       1, 1, PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
  73     { xa_op_atop_reverse,
  74       1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_SRC_ALPHA},
  75     { xa_op_xor,
  76       1, 1, PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA},
  77     { xa_op_add,
  78       0, 0, PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE},
  79 };
  80
  81
  82 /*
  83  * The alpha value stored in a luminance texture is read by the
  84  * hardware as color.
  85  */
  86 static unsigned
  87 xa_convert_blend_for_luminance(unsigned factor)
  88 {
  89     switch(factor) {
  90     case PIPE_BLENDFACTOR_DST_ALPHA:
  91         return PIPE_BLENDFACTOR_DST_COLOR;
  92     case PIPE_BLENDFACTOR_INV_DST_ALPHA:
  93         return PIPE_BLENDFACTOR_INV_DST_COLOR;
  94     default:
  95         break;
  96     }
  97     return factor;
  98 }
  99
 100
 101 static boolean
 102 blend_for_op(struct xa_composite_blend *blend,
 103              enum xa_composite_op op,
 104              struct xa_picture *src_pic,
 105              struct xa_picture *mask_pic,
 106              struct xa_picture *dst_pic)
 107 {
 108     const int num_blends =
 109         sizeof(xa_blends)/sizeof(struct xa_composite_blend);
 110     int i;
 111     boolean supported = FALSE;
 112
 113     /*
 114      * Temporarily disable component alpha since it appears buggy.
 115      */
 116     if (src_pic->component_alpha ||
 117         (mask_pic && mask_pic->component_alpha))
 118         return FALSE;
 119
 120     /*
 121      * our default in case something goes wrong
 122      */
 123     *blend = xa_blends[XA_BLEND_OP_OVER];
 124
 125     for (i = 0; i < num_blends; ++i) {
 126         if (xa_blends[i].op == op) {
 127             *blend = xa_blends[i];
 128             supported = TRUE;
 129         }
 130     }
 131
 132     if (!dst_pic->srf)
 133         return supported;
 134
 135     if (dst_pic->srf->tex->format == PIPE_FORMAT_L8_UNORM) {
 136         blend->rgb_src = xa_convert_blend_for_luminance(blend->rgb_src);
 137         blend->rgb_dst = xa_convert_blend_for_luminance(blend->rgb_dst);
 138     }
 139
 140     /*
 141      * If there's no dst alpha channel, adjust the blend op so that we'll treat
 142      * it as always 1.
 143      */
 144
 145     if (xa_format_a(dst_pic->pict_format) == 0 && blend->alpha_dst) {
 146         if (blend->rgb_src == PIPE_BLENDFACTOR_DST_ALPHA)
 147             blend->rgb_src = PIPE_BLENDFACTOR_ONE;
 148         else if (blend->rgb_src == PIPE_BLENDFACTOR_INV_DST_ALPHA)
 149             blend->rgb_src = PIPE_BLENDFACTOR_ZERO;
 150     }
 151
 152     /*
 153      * If the source alpha is being used, then we should only be in a case where
 154      * the source blend factor is 0, and the source blend value is the mask
 155      * channels multiplied by the source picture's alpha.
 156      */
 157     if (mask_pic && mask_pic->component_alpha &&
 158         xa_format_rgb(mask_pic->pict_format) &&
 159         blend->alpha_src) {
 160         if (blend->rgb_dst == PIPE_BLENDFACTOR_SRC_ALPHA) {
 161             blend->rgb_dst = PIPE_BLENDFACTOR_SRC_COLOR;
 162         } else if (blend->rgb_dst == PIPE_BLENDFACTOR_INV_SRC_ALPHA) {
 163             blend->rgb_dst = PIPE_BLENDFACTOR_INV_SRC_COLOR;
 164         }
 165     }
 166
 167     return supported;
 168 }
 169
 170
 171 static INLINE int
 172 xa_repeat_to_gallium(int mode)
 173 {
 174     switch(mode) {
 175     case xa_wrap_clamp_to_border:
 176         return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
 177     case xa_wrap_repeat:
 178         return PIPE_TEX_WRAP_REPEAT;
 179     case xa_wrap_mirror_repeat:
 180         return PIPE_TEX_WRAP_MIRROR_REPEAT;
 181     case xa_wrap_clamp_to_edge:
 182         return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 183     default:
 184         break;
 185     }
 186     return PIPE_TEX_WRAP_REPEAT;
 187 }
 188
 189 static INLINE boolean
 190 xa_filter_to_gallium(int xrender_filter, int *out_filter)
 191 {
 192
 193     switch (xrender_filter) {
 194     case xa_filter_nearest:
 195         *out_filter = PIPE_TEX_FILTER_NEAREST;
 196         break;
 197     case xa_filter_linear:
 198         *out_filter = PIPE_TEX_FILTER_LINEAR;
 199         break;
 200     default:
 201         *out_filter = PIPE_TEX_FILTER_NEAREST;
 202         return FALSE;
 203     }
 204     return TRUE;
 205 }
 206
 207 static int
 208 xa_is_filter_accelerated(struct xa_picture *pic)
 209 {
 210     int filter;
 211     if (pic && !xa_filter_to_gallium(pic->filter, &filter))
 212         return 0;
 213     return 1;
 214 }
 215
 216 int
 217 xa_composite_check_accelerated(const struct xa_composite *comp)
 218 {
 219     struct xa_composite_blend blend;
 220     struct xa_picture *src_pic = comp->src;
 221
 222     if (!xa_is_filter_accelerated(src_pic) ||
 223         !xa_is_filter_accelerated(comp->mask)) {
 224         return -XA_ERR_INVAL;
 225     }
 226
 227
 228     if (src_pic->src_pict) {
 229         if (src_pic->src_pict->type != xa_src_pict_solid_fill)
 230             return -XA_ERR_INVAL;
 231     }
 232
 233     if (blend_for_op(&blend, comp->op, comp->src, comp->mask, comp->dst)) {
 234         struct xa_picture *mask = comp->mask;
 235         if (mask && mask->component_alpha &&
 236             xa_format_rgb(mask->pict_format)) {
 237             if (blend.alpha_src && blend.rgb_src != PIPE_BLENDFACTOR_ZERO) {
 238                 return -XA_ERR_INVAL;
 239             }
 240         }
 241
 242         return XA_ERR_NONE;
 243     }
 244     return -XA_ERR_INVAL;
 245 }
 246
 247 static int
 248 bind_composite_blend_state(struct xa_context *ctx,
 249                            const struct xa_composite *comp)
 250 {
 251     struct xa_composite_blend blend_opt;
 252     struct pipe_blend_state blend;
 253
 254     if (!blend_for_op(&blend_opt, comp->op, comp->src, comp->mask, comp->dst))
 255         return -XA_ERR_INVAL;
 256
 257     memset(&blend, 0, sizeof(struct pipe_blend_state));
 258     blend.rt[0].blend_enable = 1;
 259     blend.rt[0].colormask = PIPE_MASK_RGBA;
 260
 261     blend.rt[0].rgb_src_factor   = blend_opt.rgb_src;
 262     blend.rt[0].alpha_src_factor = blend_opt.rgb_src;
 263     blend.rt[0].rgb_dst_factor   = blend_opt.rgb_dst;
 264     blend.rt[0].alpha_dst_factor = blend_opt.rgb_dst;
 265
 266     cso_set_blend(ctx->cso, &blend);
 267     return XA_ERR_NONE;
 268 }
 269
 270 static unsigned int
 271 picture_format_fixups(struct xa_picture *src_pic,
 272                       int mask)
 273 {
 274     boolean set_alpha = FALSE;
 275     boolean swizzle = FALSE;
 276     unsigned ret = 0;
 277     struct xa_surface *src = src_pic->srf;
 278     enum xa_formats src_hw_format, src_pic_format;
 279     enum xa_surface_type src_hw_type, src_pic_type;
 280
 281     if (!src)
 282         return 0;
 283
 284     src_hw_format = xa_surface_format(src);
 285     src_pic_format = src_pic->pict_format;
 286
 287     set_alpha = (xa_format_type_is_color(src_pic_format) &&
 288                  xa_format_a(src_pic_format) == 0);
 289
 290     if (set_alpha)
 291         ret |= mask ? FS_MASK_SET_ALPHA : FS_SRC_SET_ALPHA;
 292
 293     if (src_hw_format == src_pic_format) {
 294         if (src->tex->format == PIPE_FORMAT_L8_UNORM)
 295             return ((mask) ? FS_MASK_LUMINANCE : FS_SRC_LUMINANCE);
 296
 297         return ret;
 298     }
 299
 300     src_hw_type = xa_format_type(src_hw_format);
 301     src_pic_type = xa_format_type(src_pic_format);
 302
 303     swizzle = ((src_hw_type == xa_type_argb &&
 304                 src_pic_type == xa_type_abgr) ||
 305                ((src_hw_type == xa_type_abgr &&
 306                  src_pic_type == xa_type_argb)));
 307
 308     if (!swizzle && (src_hw_type != src_pic_type))
 309       return ret;
 310
 311     if (swizzle)
 312         ret |= mask ? FS_MASK_SWIZZLE_RGB : FS_SRC_SWIZZLE_RGB;
 313
 314     return ret;
 315 }
 316
 317 static int
 318 bind_shaders(struct xa_context *ctx, const struct xa_composite *comp)
 319 {
 320     unsigned vs_traits = 0, fs_traits = 0;
 321     struct xa_shader shader;
 322     struct xa_picture *src_pic = comp->src;
 323     struct xa_picture *mask_pic = comp->mask;
 324
 325     ctx->has_solid_color = FALSE;
 326
 327     if (src_pic) {
 328         if (src_pic->wrap == xa_wrap_clamp_to_border && src_pic->has_transform)
 329             fs_traits |= FS_SRC_REPEAT_NONE;
 330
 331         if (src_pic->src_pict) {
 332             if (src_pic->src_pict->type == xa_src_pict_solid_fill) {
 333                 fs_traits |= FS_SOLID_FILL;
 334                 vs_traits |= VS_SOLID_FILL;
 335                 xa_pixel_to_float4(src_pic->src_pict->solid_fill.color,
 336                                    ctx->solid_color);
 337                 ctx->has_solid_color = TRUE;
 338             }
 339         } else {
 340             fs_traits |= FS_COMPOSITE;
 341             vs_traits |= VS_COMPOSITE;
 342         }
 343
 344         fs_traits |= picture_format_fixups(src_pic, 0);
 345     }
 346
 347     if (mask_pic) {
 348         vs_traits |= VS_MASK;
 349         fs_traits |= FS_MASK;
 350         if (mask_pic->wrap == xa_wrap_clamp_to_border &&
 351             mask_pic->has_transform)
 352             fs_traits |= FS_MASK_REPEAT_NONE;
 353
 354         if (mask_pic->component_alpha) {
 355             struct xa_composite_blend blend;
 356             if (!blend_for_op(&blend, comp->op, src_pic, mask_pic, NULL))
 357                 return -XA_ERR_INVAL;
 358
 359             if (blend.alpha_src) {
 360                 fs_traits |= FS_CA_SRCALPHA;
 361             } else
 362                 fs_traits |= FS_CA_FULL;
 363         }
 364
 365         fs_traits |= picture_format_fixups(mask_pic, 1);
 366     }
 367
 368     if (ctx->dst->srf->format == PIPE_FORMAT_L8_UNORM)
 369         fs_traits |= FS_DST_LUMINANCE;
 370
 371     shader = xa_shaders_get(ctx->shaders, vs_traits, fs_traits);
 372     cso_set_vertex_shader_handle(ctx->cso, shader.vs);
 373     cso_set_fragment_shader_handle(ctx->cso, shader.fs);
 374     return XA_ERR_NONE;
 375 }
 376
 377 static void
 378 bind_samplers(struct xa_context *ctx,
 379               const struct xa_composite *comp)
 380 {
 381     struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 382     struct pipe_sampler_state src_sampler, mask_sampler;
 383     struct pipe_sampler_view view_templ;
 384     struct pipe_sampler_view *src_view;
 385     struct pipe_context *pipe = ctx->pipe;
 386     struct xa_picture *src_pic = comp->src;
 387     struct xa_picture *mask_pic = comp->mask;
 388
 389     ctx->num_bound_samplers = 0;
 390
 391     memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 392     memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 393
 394     if (src_pic) {
 395         if (ctx->has_solid_color) {
 396             samplers[0] = NULL;
 397             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 398         } else {
 399             unsigned src_wrap = xa_repeat_to_gallium(src_pic->wrap);
 400             int filter;
 401
 402             (void) xa_filter_to_gallium(src_pic->filter, &filter);
 403
 404             src_sampler.wrap_s = src_wrap;
 405             src_sampler.wrap_t = src_wrap;
 406             src_sampler.min_img_filter = filter;
 407             src_sampler.mag_img_filter = filter;
 408             src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 409             src_sampler.normalized_coords = 1;
 410             samplers[0] = &src_sampler;
 411             ctx->num_bound_samplers = 1;
 412             u_sampler_view_default_template(&view_templ,
 413                                             src_pic->srf->tex,
 414                                             src_pic->srf->tex->format);
 415             src_view = pipe->create_sampler_view(pipe, src_pic->srf->tex,
 416                                                  &view_templ);
 417             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 418             ctx->bound_sampler_views[0] = src_view;
 419         }
 420     }
 421
 422     if (mask_pic) {
 423         unsigned mask_wrap = xa_repeat_to_gallium(mask_pic->wrap);
 424         int filter;
 425
 426         (void) xa_filter_to_gallium(mask_pic->filter, &filter);
 427
 428         mask_sampler.wrap_s = mask_wrap;
 429         mask_sampler.wrap_t = mask_wrap;
 430         mask_sampler.min_img_filter = filter;
 431         mask_sampler.mag_img_filter = filter;
 432         src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 433         mask_sampler.normalized_coords = 1;
 434         samplers[1] = &mask_sampler;
 435         ctx->num_bound_samplers = 2;
 436         u_sampler_view_default_template(&view_templ,
 437                                         mask_pic->srf->tex,
 438                                         mask_pic->srf->tex->format);
 439         src_view = pipe->create_sampler_view(pipe, mask_pic->srf->tex,
 440                                              &view_templ);
 441         pipe_sampler_view_reference(&ctx->bound_sampler_views[1], NULL);
 442         ctx->bound_sampler_views[1] = src_view;
 443     }
 444
 445     cso_set_samplers(ctx->cso, ctx->num_bound_samplers,
 446                      (const struct pipe_sampler_state **)samplers);
 447     cso_set_fragment_sampler_views(ctx->cso, ctx->num_bound_samplers,
 448                                    ctx->bound_sampler_views);
 449 }
 450
 451 int
 452 xa_composite_prepare(struct xa_context *ctx,
 453                      const struct xa_composite *comp)
 454 {
 455     struct xa_surface *dst_srf = comp->dst->srf;
 456     int ret;
 457
 458     ret = xa_surface_psurf_create(ctx, dst_srf);
 459     if (ret != XA_ERR_NONE)
 460         return ret;
 461
 462     ctx->dst = dst_srf;
 463     renderer_bind_destination(ctx, dst_srf->srf,
 464                               dst_srf->srf->width,
 465                               dst_srf->srf->height);
 466
 467     ret = bind_composite_blend_state(ctx, comp);
 468     if (ret != XA_ERR_NONE)
 469         return ret;
 470     ret = bind_shaders(ctx, comp);
 471     if (ret != XA_ERR_NONE)
 472         return ret;
 473     bind_samplers(ctx, comp);
 474
 475     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 476         renderer_begin_solid(ctx);
 477     } else {
 478         renderer_begin_textures(ctx);
 479         ctx->comp = comp;
 480     }
 481
 482     xa_surface_psurf_destroy(dst_srf);
 483     return XA_ERR_NONE;
 484 }
 485
 486 void xa_composite_rect(struct xa_context *ctx,
 487                        int srcX, int srcY, int maskX, int maskY,
 488                        int dstX, int dstY, int width, int height)
 489 {
 490     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 491         renderer_solid(ctx, dstX, dstY, dstX + width, dstY + height,
 492                        ctx->solid_color);
 493     } else {
 494         const struct xa_composite *comp = ctx->comp;
 495         int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
 496         const float *src_matrix = NULL;
 497         const float *mask_matrix = NULL;
 498
 499         if (comp->src->has_transform)
 500             src_matrix = comp->src->transform;
 501         if (comp->mask && comp->mask->has_transform)
 502             mask_matrix = comp->mask->transform;
 503
 504         renderer_texture(ctx, pos, width, height,
 505                          src_matrix, mask_matrix);
 506     }
 507 }
 508
 509 void
 510 xa_composite_done(struct xa_context *ctx)
 511 {
 512     renderer_draw_flush(ctx);
 513     ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
 514
 515     ctx->comp = NULL;
 516     ctx->has_solid_color = FALSE;
 517     ctx->num_bound_samplers = 0;
 518 }
 519
 520 static const struct xa_composite_allocation a = {
 521     .xa_composite_size = sizeof(struct xa_composite),
 522     .xa_picture_size = sizeof(struct xa_picture),
 523     .xa_source_pict_size = sizeof(union xa_source_pict),
 524 };
 525
 526 const struct xa_composite_allocation *
 527 xa_composite_allocation(void)
 528 {
 529     return &a;
 530 }