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     unsigned 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 static boolean
  82 blend_for_op(struct xa_composite_blend *blend,
  83              enum xa_composite_op op,
  84              struct xa_picture *src_pic,
  85              struct xa_picture *mask_pic,
  86              struct xa_picture *dst_pic)
  87 {
  88     const int num_blends =
  89         sizeof(xa_blends)/sizeof(struct xa_composite_blend);
  90     int i;
  91     boolean supported = FALSE;
  92
  93     /*
  94      * Temporarily disable component alpha since it appears buggy.
  95      */
  96     if (mask_pic && mask_pic->component_alpha)
  97         return FALSE;
  98
  99     /*
 100      * our default in case something goes wrong
 101      */
 102     *blend = xa_blends[XA_BLEND_OP_OVER];
 103
 104     for (i = 0; i < num_blends; ++i) {
 105         if (xa_blends[i].op == op) {
 106             *blend = xa_blends[i];
 107             supported = TRUE;
 108         }
 109     }
 110
 111     if (!dst_pic->srf)
 112         return supported;
 113
 114     /*
 115      * None of the hardware formats we might use for dst A8 are
 116      * suitable for dst_alpha blending, since they present the
 117      * alpha channel either in all color channels (L8_UNORM) or
 118      * in the red channel only (R8_UNORM)
 119      */
 120     if ((dst_pic->srf->tex->format == PIPE_FORMAT_L8_UNORM ||
 121          dst_pic->srf->tex->format == PIPE_FORMAT_R8_UNORM) &&
 122         blend->alpha_dst)
 123         return FALSE;
 124
 125     /*
 126      * If there's no dst alpha channel, adjust the blend op so that we'll treat
 127      * it as always 1.
 128      */
 129
 130     if (xa_format_a(dst_pic->pict_format) == 0 && blend->alpha_dst) {
 131         if (blend->rgb_src == PIPE_BLENDFACTOR_DST_ALPHA)
 132             blend->rgb_src = PIPE_BLENDFACTOR_ONE;
 133         else if (blend->rgb_src == PIPE_BLENDFACTOR_INV_DST_ALPHA)
 134             blend->rgb_src = PIPE_BLENDFACTOR_ZERO;
 135     }
 136
 137     /*
 138      * If the source alpha is being used, then we should only be in a case where
 139      * the source blend factor is 0, and the source blend value is the mask
 140      * channels multiplied by the source picture's alpha.
 141      */
 142     if (mask_pic && mask_pic->component_alpha &&
 143         xa_format_rgb(mask_pic->pict_format) &&
 144         blend->alpha_src) {
 145         if (blend->rgb_dst == PIPE_BLENDFACTOR_SRC_ALPHA) {
 146             blend->rgb_dst = PIPE_BLENDFACTOR_SRC_COLOR;
 147         } else if (blend->rgb_dst == PIPE_BLENDFACTOR_INV_SRC_ALPHA) {
 148             blend->rgb_dst = PIPE_BLENDFACTOR_INV_SRC_COLOR;
 149         }
 150     }
 151
 152     return supported;
 153 }
 154
 155
 156 static inline int
 157 xa_repeat_to_gallium(int mode)
 158 {
 159     switch(mode) {
 160     case xa_wrap_clamp_to_border:
 161         return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
 162     case xa_wrap_repeat:
 163         return PIPE_TEX_WRAP_REPEAT;
 164     case xa_wrap_mirror_repeat:
 165         return PIPE_TEX_WRAP_MIRROR_REPEAT;
 166     case xa_wrap_clamp_to_edge:
 167         return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 168     default:
 169         break;
 170     }
 171     return PIPE_TEX_WRAP_REPEAT;
 172 }
 173
 174 static inline boolean
 175 xa_filter_to_gallium(int xrender_filter, int *out_filter)
 176 {
 177
 178     switch (xrender_filter) {
 179     case xa_filter_nearest:
 180         *out_filter = PIPE_TEX_FILTER_NEAREST;
 181         break;
 182     case xa_filter_linear:
 183         *out_filter = PIPE_TEX_FILTER_LINEAR;
 184         break;
 185     default:
 186         *out_filter = PIPE_TEX_FILTER_NEAREST;
 187         return FALSE;
 188     }
 189     return TRUE;
 190 }
 191
 192 static int
 193 xa_is_filter_accelerated(struct xa_picture *pic)
 194 {
 195     int filter;
 196     if (pic && !xa_filter_to_gallium(pic->filter, &filter))
 197         return 0;
 198     return 1;
 199 }
 200
 201 XA_EXPORT int
 202 xa_composite_check_accelerated(const struct xa_composite *comp)
 203 {
 204     struct xa_composite_blend blend;
 205     struct xa_picture *src_pic = comp->src;
 206
 207     if (!xa_is_filter_accelerated(src_pic) ||
 208         !xa_is_filter_accelerated(comp->mask)) {
 209         return -XA_ERR_INVAL;
 210     }
 211
 212
 213     if (src_pic->src_pict) {
 214         if (src_pic->src_pict->type != xa_src_pict_solid_fill)
 215             return -XA_ERR_INVAL;
 216
 217         /*
 218          * Currently we don't support solid fill with a mask.
 219          * We can easily do that, but that would require shader,
 220          * sampler view setup and vertex setup modification.
 221          */
 222         if (comp->mask)
 223             return -XA_ERR_INVAL;
 224     }
 225
 226     if (blend_for_op(&blend, comp->op, comp->src, comp->mask, comp->dst)) {
 227         struct xa_picture *mask = comp->mask;
 228         if (mask && mask->component_alpha &&
 229             xa_format_rgb(mask->pict_format)) {
 230             if (blend.alpha_src && blend.rgb_src != PIPE_BLENDFACTOR_ZERO) {
 231                 return -XA_ERR_INVAL;
 232             }
 233         }
 234
 235         return XA_ERR_NONE;
 236     }
 237     return -XA_ERR_INVAL;
 238 }
 239
 240 static int
 241 bind_composite_blend_state(struct xa_context *ctx,
 242                            const struct xa_composite *comp)
 243 {
 244     struct xa_composite_blend blend_opt;
 245     struct pipe_blend_state blend;
 246
 247     if (!blend_for_op(&blend_opt, comp->op, comp->src, comp->mask, comp->dst))
 248         return -XA_ERR_INVAL;
 249
 250     memset(&blend, 0, sizeof(struct pipe_blend_state));
 251     blend.rt[0].blend_enable = 1;
 252     blend.rt[0].colormask = PIPE_MASK_RGBA;
 253
 254     blend.rt[0].rgb_src_factor   = blend_opt.rgb_src;
 255     blend.rt[0].alpha_src_factor = blend_opt.rgb_src;
 256     blend.rt[0].rgb_dst_factor   = blend_opt.rgb_dst;
 257     blend.rt[0].alpha_dst_factor = blend_opt.rgb_dst;
 258
 259     cso_set_blend(ctx->cso, &blend);
 260     return XA_ERR_NONE;
 261 }
 262
 263 static unsigned int
 264 picture_format_fixups(struct xa_picture *src_pic,
 265                       int mask)
 266 {
 267     boolean set_alpha = FALSE;
 268     boolean swizzle = FALSE;
 269     unsigned ret = 0;
 270     struct xa_surface *src = src_pic->srf;
 271     enum xa_formats src_hw_format, src_pic_format;
 272     enum xa_surface_type src_hw_type, src_pic_type;
 273
 274     if (!src)
 275         return 0;
 276
 277     src_hw_format = xa_surface_format(src);
 278     src_pic_format = src_pic->pict_format;
 279
 280     set_alpha = (xa_format_type_is_color(src_pic_format) &&
 281                  xa_format_a(src_pic_format) == 0);
 282
 283     if (set_alpha)
 284         ret |= mask ? FS_MASK_SET_ALPHA : FS_SRC_SET_ALPHA;
 285
 286     if (src_hw_format == src_pic_format) {
 287         if (src->tex->format == PIPE_FORMAT_L8_UNORM ||
 288             src->tex->format == PIPE_FORMAT_R8_UNORM)
 289             return ((mask) ? FS_MASK_LUMINANCE : FS_SRC_LUMINANCE);
 290
 291         return ret;
 292     }
 293
 294     src_hw_type = xa_format_type(src_hw_format);
 295     src_pic_type = xa_format_type(src_pic_format);
 296
 297     swizzle = ((src_hw_type == xa_type_argb &&
 298                 src_pic_type == xa_type_abgr) ||
 299                ((src_hw_type == xa_type_abgr &&
 300                  src_pic_type == xa_type_argb)));
 301
 302     if (!swizzle && (src_hw_type != src_pic_type))
 303       return ret;
 304
 305     if (swizzle)
 306         ret |= mask ? FS_MASK_SWIZZLE_RGB : FS_SRC_SWIZZLE_RGB;
 307
 308     return ret;
 309 }
 310
 311 static int
 312 bind_shaders(struct xa_context *ctx, const struct xa_composite *comp)
 313 {
 314     unsigned vs_traits = 0, fs_traits = 0;
 315     struct xa_shader shader;
 316     struct xa_picture *src_pic = comp->src;
 317     struct xa_picture *mask_pic = comp->mask;
 318
 319     ctx->has_solid_color = FALSE;
 320
 321     if (src_pic) {
 322         if (src_pic->wrap == xa_wrap_clamp_to_border && src_pic->has_transform)
 323             fs_traits |= FS_SRC_REPEAT_NONE;
 324
 325         if (src_pic->src_pict) {
 326             if (src_pic->src_pict->type == xa_src_pict_solid_fill) {
 327                 fs_traits |= FS_SOLID_FILL | FS_FILL;
 328                 vs_traits |= VS_SOLID_FILL;
 329                 xa_pixel_to_float4(src_pic->src_pict->solid_fill.color,
 330                                    ctx->solid_color);
 331                 ctx->has_solid_color = TRUE;
 332             }
 333         } else {
 334             fs_traits |= FS_COMPOSITE;
 335             vs_traits |= VS_COMPOSITE;
 336         }
 337
 338         fs_traits |= picture_format_fixups(src_pic, 0);
 339     }
 340
 341     if (mask_pic) {
 342         vs_traits |= VS_MASK;
 343         fs_traits |= FS_MASK;
 344         if (mask_pic->wrap == xa_wrap_clamp_to_border &&
 345             mask_pic->has_transform)
 346             fs_traits |= FS_MASK_REPEAT_NONE;
 347
 348         if (mask_pic->component_alpha) {
 349             struct xa_composite_blend blend;
 350             if (!blend_for_op(&blend, comp->op, src_pic, mask_pic, NULL))
 351                 return -XA_ERR_INVAL;
 352
 353             if (blend.alpha_src) {
 354                 fs_traits |= FS_CA_SRCALPHA;
 355             } else
 356                 fs_traits |= FS_CA_FULL;
 357         }
 358
 359         fs_traits |= picture_format_fixups(mask_pic, 1);
 360     }
 361
 362     if (ctx->srf->format == PIPE_FORMAT_L8_UNORM ||
 363         ctx->srf->format == PIPE_FORMAT_R8_UNORM)
 364         fs_traits |= FS_DST_LUMINANCE;
 365
 366     shader = xa_shaders_get(ctx->shaders, vs_traits, fs_traits);
 367     cso_set_vertex_shader_handle(ctx->cso, shader.vs);
 368     cso_set_fragment_shader_handle(ctx->cso, shader.fs);
 369     return XA_ERR_NONE;
 370 }
 371
 372 static void
 373 bind_samplers(struct xa_context *ctx,
 374               const struct xa_composite *comp)
 375 {
 376     struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 377     struct pipe_sampler_state src_sampler, mask_sampler;
 378     struct pipe_sampler_view view_templ;
 379     struct pipe_sampler_view *src_view;
 380     struct pipe_context *pipe = ctx->pipe;
 381     struct xa_picture *src_pic = comp->src;
 382     struct xa_picture *mask_pic = comp->mask;
 383
 384     ctx->num_bound_samplers = 0;
 385
 386     memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 387     memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 388
 389     if (src_pic) {
 390         if (ctx->has_solid_color) {
 391             samplers[0] = NULL;
 392             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 393         } else {
 394             unsigned src_wrap = xa_repeat_to_gallium(src_pic->wrap);
 395             int filter;
 396
 397             (void) xa_filter_to_gallium(src_pic->filter, &filter);
 398
 399             src_sampler.wrap_s = src_wrap;
 400             src_sampler.wrap_t = src_wrap;
 401             src_sampler.min_img_filter = filter;
 402             src_sampler.mag_img_filter = filter;
 403             src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 404             src_sampler.normalized_coords = 1;
 405             samplers[0] = &src_sampler;
 406             ctx->num_bound_samplers = 1;
 407             u_sampler_view_default_template(&view_templ,
 408                                             src_pic->srf->tex,
 409                                             src_pic->srf->tex->format);
 410             src_view = pipe->create_sampler_view(pipe, src_pic->srf->tex,
 411                                                  &view_templ);
 412             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 413             ctx->bound_sampler_views[0] = src_view;
 414         }
 415     }
 416
 417     if (mask_pic) {
 418         unsigned mask_wrap = xa_repeat_to_gallium(mask_pic->wrap);
 419         int filter;
 420
 421         (void) xa_filter_to_gallium(mask_pic->filter, &filter);
 422
 423         mask_sampler.wrap_s = mask_wrap;
 424         mask_sampler.wrap_t = mask_wrap;
 425         mask_sampler.min_img_filter = filter;
 426         mask_sampler.mag_img_filter = filter;
 427         src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 428         mask_sampler.normalized_coords = 1;
 429         samplers[1] = &mask_sampler;
 430         ctx->num_bound_samplers = 2;
 431         u_sampler_view_default_template(&view_templ,
 432                                         mask_pic->srf->tex,
 433                                         mask_pic->srf->tex->format);
 434         src_view = pipe->create_sampler_view(pipe, mask_pic->srf->tex,
 435                                              &view_templ);
 436         pipe_sampler_view_reference(&ctx->bound_sampler_views[1], NULL);
 437         ctx->bound_sampler_views[1] = src_view;
 438
 439
 440         /*
 441          * If src is a solid color, we have no src view, so set up a
 442          * dummy one that will not be used anyway.
 443          */
 444         if (ctx->bound_sampler_views[0] == NULL)
 445             pipe_sampler_view_reference(&ctx->bound_sampler_views[0],
 446                                         src_view);
 447
 448     }
 449
 450     cso_set_samplers(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
 451                      (const struct pipe_sampler_state **)samplers);
 452     cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, ctx->num_bound_samplers,
 453                                    ctx->bound_sampler_views);
 454 }
 455
 456 XA_EXPORT int
 457 xa_composite_prepare(struct xa_context *ctx,
 458                      const struct xa_composite *comp)
 459 {
 460     struct xa_surface *dst_srf = comp->dst->srf;
 461     int ret;
 462
 463     if (comp->mask && !comp->mask->srf)
 464         return -XA_ERR_INVAL;
 465
 466     ret = xa_ctx_srf_create(ctx, dst_srf);
 467     if (ret != XA_ERR_NONE)
 468         return ret;
 469
 470     ctx->dst = dst_srf;
 471     renderer_bind_destination(ctx, ctx->srf);
 472
 473     ret = bind_composite_blend_state(ctx, comp);
 474     if (ret != XA_ERR_NONE)
 475         return ret;
 476     ret = bind_shaders(ctx, comp);
 477     if (ret != XA_ERR_NONE)
 478         return ret;
 479     bind_samplers(ctx, comp);
 480
 481     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 482         renderer_begin_solid(ctx);
 483     } else {
 484         renderer_begin_textures(ctx);
 485         ctx->comp = comp;
 486     }
 487
 488     xa_ctx_srf_destroy(ctx);
 489     return XA_ERR_NONE;
 490 }
 491
 492 XA_EXPORT void
 493 xa_composite_rect(struct xa_context *ctx,
 494                   int srcX, int srcY, int maskX, int maskY,
 495                   int dstX, int dstY, int width, int height)
 496 {
 497     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 498         renderer_solid(ctx, dstX, dstY, dstX + width, dstY + height,
 499                        ctx->solid_color);
 500     } else {
 501         const struct xa_composite *comp = ctx->comp;
 502         int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
 503         const float *src_matrix = NULL;
 504         const float *mask_matrix = NULL;
 505
 506         xa_scissor_update(ctx, dstX, dstY, dstX + width, dstY + height);
 507
 508         if (comp->src->has_transform)
 509             src_matrix = comp->src->transform;
 510         if (comp->mask && comp->mask->has_transform)
 511             mask_matrix = comp->mask->transform;
 512
 513         renderer_texture(ctx, pos, width, height,
 514                          src_matrix, mask_matrix);
 515     }
 516 }
 517
 518 XA_EXPORT void
 519 xa_composite_done(struct xa_context *ctx)
 520 {
 521     renderer_draw_flush(ctx);
 522
 523     ctx->comp = NULL;
 524     ctx->has_solid_color = FALSE;
 525     xa_ctx_sampler_views_destroy(ctx);
 526 }
 527
 528 static const struct xa_composite_allocation a = {
 529     .xa_composite_size = sizeof(struct xa_composite),
 530     .xa_picture_size = sizeof(struct xa_picture),
 531     .xa_source_pict_size = sizeof(union xa_source_pict),
 532 };
 533
 534 XA_EXPORT const struct xa_composite_allocation *
 535 xa_composite_allocation(void)
 536 {
 537     return &a;
 538 }