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 static boolean
  83 blend_for_op(struct xa_composite_blend *blend,
  84              enum xa_composite_op op,
  85              struct xa_picture *src_pic,
  86              struct xa_picture *mask_pic,
  87              struct xa_picture *dst_pic)
  88 {
  89     const int num_blends =
  90         sizeof(xa_blends)/sizeof(struct xa_composite_blend);
  91     int i;
  92     boolean supported = FALSE;
  93
  94     /*
  95      * our default in case something goes wrong
  96      */
  97
  98     *blend = xa_blends[XA_BLEND_OP_OVER];
  99
 100     for (i = 0; i < num_blends; ++i) {
 101         if (xa_blends[i].op == op) {
 102             *blend = xa_blends[i];
 103             supported = TRUE;
 104         }
 105     }
 106
 107
 108     /*
 109      * If there's no dst alpha channel, adjust the blend op so that we'll treat
 110      * it as always 1.
 111      */
 112
 113     if (dst_pic &&
 114         xa_format_a(dst_pic->pict_format) == 0 &&
 115         blend->alpha_dst) {
 116         if (blend->rgb_src == PIPE_BLENDFACTOR_DST_ALPHA)
 117             blend->rgb_src = PIPE_BLENDFACTOR_ONE;
 118         else if (blend->rgb_src == PIPE_BLENDFACTOR_INV_DST_ALPHA)
 119             blend->rgb_src = PIPE_BLENDFACTOR_ZERO;
 120     }
 121
 122     /*
 123      * If the source alpha is being used, then we should only be in a case where
 124      * the source blend factor is 0, and the source blend value is the mask
 125      * channels multiplied by the source picture's alpha.
 126      */
 127     if (mask_pic && mask_pic->component_alpha &&
 128         xa_format_rgb(mask_pic->pict_format) &&
 129         blend->alpha_src) {
 130         if (blend->rgb_dst == PIPE_BLENDFACTOR_SRC_ALPHA) {
 131             blend->rgb_dst = PIPE_BLENDFACTOR_SRC_COLOR;
 132         } else if (blend->rgb_dst == PIPE_BLENDFACTOR_INV_SRC_ALPHA) {
 133             blend->rgb_dst = PIPE_BLENDFACTOR_INV_SRC_COLOR;
 134         }
 135     }
 136
 137     return supported;
 138 }
 139
 140
 141 static INLINE int
 142 xa_repeat_to_gallium(int mode)
 143 {
 144     switch(mode) {
 145     case xa_wrap_clamp_to_border:
 146         return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
 147     case xa_wrap_repeat:
 148         return PIPE_TEX_WRAP_REPEAT;
 149     case xa_wrap_mirror_repeat:
 150         return PIPE_TEX_WRAP_MIRROR_REPEAT;
 151     case xa_wrap_clamp_to_edge:
 152         return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 153     default:
 154         break;
 155     }
 156     return PIPE_TEX_WRAP_REPEAT;
 157 }
 158
 159 static INLINE boolean
 160 xa_filter_to_gallium(int xrender_filter, int *out_filter)
 161 {
 162
 163     switch (xrender_filter) {
 164     case xa_filter_nearest:
 165         *out_filter = PIPE_TEX_FILTER_NEAREST;
 166         break;
 167     case xa_filter_linear:
 168         *out_filter = PIPE_TEX_FILTER_LINEAR;
 169         break;
 170     default:
 171         *out_filter = PIPE_TEX_FILTER_NEAREST;
 172         return FALSE;
 173     }
 174     return TRUE;
 175 }
 176
 177 static int
 178 xa_is_filter_accelerated(struct xa_picture *pic)
 179 {
 180     int filter;
 181     if (pic && !xa_filter_to_gallium(pic->filter, &filter))
 182         return 0;
 183     return 1;
 184 }
 185
 186 int
 187 xa_composite_check_accelerated(const struct xa_composite *comp)
 188 {
 189     struct xa_composite_blend blend;
 190     struct xa_picture *src_pic = comp->src;
 191
 192     if (!xa_is_filter_accelerated(src_pic) ||
 193         !xa_is_filter_accelerated(comp->mask)) {
 194         return XA_ERR_INVAL;
 195     }
 196
 197
 198     if (src_pic->src_pict) {
 199         if (src_pic->src_pict->type != xa_src_pict_solid_fill)
 200             return XA_ERR_INVAL;
 201     }
 202
 203     if (blend_for_op(&blend, comp->op, comp->src, comp->mask, comp->dst)) {
 204         struct xa_picture *mask = comp->mask;
 205         if (mask && mask->component_alpha &&
 206             xa_format_rgb(mask->pict_format)) {
 207             if (blend.alpha_src && blend.rgb_src != PIPE_BLENDFACTOR_ZERO) {
 208                 return XA_ERR_INVAL;
 209             }
 210         }
 211
 212         return XA_ERR_NONE;
 213     }
 214     return XA_ERR_INVAL;
 215 }
 216
 217 static void
 218 bind_composite_blend_state(struct xa_context *ctx,
 219                            const struct xa_composite *comp)
 220 {
 221     struct xa_composite_blend blend_opt;
 222     struct pipe_blend_state blend;
 223
 224     blend_for_op(&blend_opt, comp->op, comp->src, comp->mask, comp->dst);
 225
 226     memset(&blend, 0, sizeof(struct pipe_blend_state));
 227     blend.rt[0].blend_enable = 1;
 228     blend.rt[0].colormask = PIPE_MASK_RGBA;
 229
 230     blend.rt[0].rgb_src_factor   = blend_opt.rgb_src;
 231     blend.rt[0].alpha_src_factor = blend_opt.rgb_src;
 232     blend.rt[0].rgb_dst_factor   = blend_opt.rgb_dst;
 233     blend.rt[0].alpha_dst_factor = blend_opt.rgb_dst;
 234
 235     cso_set_blend(ctx->cso, &blend);
 236 }
 237
 238 static unsigned int
 239 picture_format_fixups(struct xa_picture *src_pic,
 240                       struct xa_picture *dst_pic,
 241                       int mask)
 242 {
 243     boolean set_alpha = FALSE;
 244     boolean swizzle = FALSE;
 245     unsigned ret = 0;
 246     struct xa_surface *src = src_pic->srf;
 247     enum xa_formats src_hw_format, src_pic_format;
 248     enum xa_surface_type src_hw_type, src_pic_type;
 249
 250     if (!src)
 251         return 0;
 252
 253     src_hw_format = xa_surface_format(src);
 254     src_pic_format = src_pic->pict_format;
 255
 256     if (!src || src_hw_format == src_pic_format) {
 257         if (src_pic_format == xa_format_a8) {
 258             if (mask)
 259                 return FS_MASK_LUMINANCE;
 260             else if (dst_pic->pict_format != xa_format_a8) {
 261
 262                 /*
 263                  * if both dst and src are luminance then
 264                  * we don't want to swizzle the alpha (X) of the
 265                  * source into W component of the dst because
 266                  * it will break our destination
 267                  */
 268                 return FS_SRC_LUMINANCE;
 269             }
 270         }
 271         return 0;
 272     }
 273
 274     src_hw_type = xa_format_type(src_hw_format);
 275     src_pic_type = xa_format_type(src_pic_format);
 276
 277     swizzle = ((src_hw_type == xa_type_argb &&
 278                 src_pic_type == xa_type_abgr) ||
 279                ((src_hw_type == xa_type_abgr &&
 280                  src_pic_type == xa_type_argb)));
 281
 282     if (!swizzle && (src_hw_type != src_pic_type))
 283         return 0;
 284
 285     set_alpha = (xa_format_type_is_color(src_pic_format) &&
 286                  xa_format_a(src_pic_type) == 0);
 287
 288     if (set_alpha)
 289         ret |= mask ? FS_MASK_SET_ALPHA : FS_SRC_SET_ALPHA;
 290     if (swizzle)
 291         ret |= mask ? FS_MASK_SWIZZLE_RGB : FS_SRC_SWIZZLE_RGB;
 292
 293     return ret;
 294 }
 295
 296 static void
 297 bind_shaders(struct xa_context *ctx, const struct xa_composite *comp)
 298 {
 299     unsigned vs_traits = 0, fs_traits = 0;
 300     struct xa_shader shader;
 301     struct xa_picture *src_pic = comp->src;
 302     struct xa_picture *mask_pic = comp->mask;
 303     struct xa_picture *dst_pic = comp->dst;
 304
 305     ctx->has_solid_color = FALSE;
 306
 307     if (src_pic) {
 308         if (src_pic->wrap == xa_wrap_clamp_to_border && src_pic->has_transform)
 309             fs_traits |= FS_SRC_REPEAT_NONE;
 310
 311         if (src_pic->src_pict) {
 312             if (src_pic->src_pict->type == xa_src_pict_solid_fill) {
 313                 fs_traits |= FS_SOLID_FILL;
 314                 vs_traits |= VS_SOLID_FILL;
 315                 xa_pixel_to_float4(src_pic->src_pict->solid_fill.color,
 316                                    ctx->solid_color);
 317                 ctx->has_solid_color = TRUE;
 318             }
 319         } else {
 320             fs_traits |= FS_COMPOSITE;
 321             vs_traits |= VS_COMPOSITE;
 322         }
 323
 324         fs_traits |= picture_format_fixups(src_pic, dst_pic, 0);
 325     }
 326
 327     if (mask_pic) {
 328         vs_traits |= VS_MASK;
 329         fs_traits |= FS_MASK;
 330         if (mask_pic->wrap == xa_wrap_clamp_to_border &&
 331             mask_pic->has_transform)
 332             fs_traits |= FS_MASK_REPEAT_NONE;
 333
 334         if (mask_pic->component_alpha) {
 335             struct xa_composite_blend blend;
 336             blend_for_op(&blend, comp->op, src_pic, mask_pic, NULL);
 337             if (blend.alpha_src) {
 338                 fs_traits |= FS_CA_SRCALPHA;
 339             } else
 340                 fs_traits |= FS_CA_FULL;
 341         }
 342
 343         fs_traits |= picture_format_fixups(mask_pic, dst_pic, 1);
 344     }
 345
 346     shader = xa_shaders_get(ctx->shaders, vs_traits, fs_traits);
 347     cso_set_vertex_shader_handle(ctx->cso, shader.vs);
 348     cso_set_fragment_shader_handle(ctx->cso, shader.fs);
 349 }
 350
 351 static void
 352 bind_samplers(struct xa_context *ctx,
 353               const struct xa_composite *comp)
 354 {
 355     struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 356     struct pipe_sampler_state src_sampler, mask_sampler;
 357     struct pipe_sampler_view view_templ;
 358     struct pipe_sampler_view *src_view;
 359     struct pipe_context *pipe = ctx->pipe;
 360     struct xa_picture *src_pic = comp->src;
 361     struct xa_picture *mask_pic = comp->mask;
 362
 363     ctx->num_bound_samplers = 0;
 364
 365     memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 366     memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 367
 368     if (src_pic) {
 369         if (ctx->has_solid_color) {
 370             samplers[0] = NULL;
 371             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 372         } else {
 373             unsigned src_wrap = xa_repeat_to_gallium(src_pic->wrap);
 374             int filter;
 375
 376             (void) xa_filter_to_gallium(src_pic->filter, &filter);
 377
 378             src_sampler.wrap_s = src_wrap;
 379             src_sampler.wrap_t = src_wrap;
 380             src_sampler.min_img_filter = filter;
 381             src_sampler.mag_img_filter = filter;
 382             src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 383             src_sampler.normalized_coords = 1;
 384             samplers[0] = &src_sampler;
 385             ctx->num_bound_samplers = 1;
 386             u_sampler_view_default_template(&view_templ,
 387                                             src_pic->srf->tex,
 388                                             src_pic->srf->tex->format);
 389             src_view = pipe->create_sampler_view(pipe, src_pic->srf->tex,
 390                                                  &view_templ);
 391             pipe_sampler_view_reference(&ctx->bound_sampler_views[0], NULL);
 392             ctx->bound_sampler_views[0] = src_view;
 393         }
 394     }
 395
 396     if (mask_pic) {
 397         unsigned mask_wrap = xa_repeat_to_gallium(mask_pic->wrap);
 398         int filter;
 399
 400         (void) xa_filter_to_gallium(mask_pic->filter, &filter);
 401
 402         mask_sampler.wrap_s = mask_wrap;
 403         mask_sampler.wrap_t = mask_wrap;
 404         mask_sampler.min_img_filter = filter;
 405         mask_sampler.mag_img_filter = filter;
 406         src_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 407         mask_sampler.normalized_coords = 1;
 408         samplers[1] = &mask_sampler;
 409         ctx->num_bound_samplers = 2;
 410         u_sampler_view_default_template(&view_templ,
 411                                         mask_pic->srf->tex,
 412                                         mask_pic->srf->tex->format);
 413         src_view = pipe->create_sampler_view(pipe, mask_pic->srf->tex,
 414                                              &view_templ);
 415         pipe_sampler_view_reference(&ctx->bound_sampler_views[1], NULL);
 416         ctx->bound_sampler_views[1] = src_view;
 417     }
 418
 419     cso_set_samplers(ctx->cso, ctx->num_bound_samplers,
 420                      (const struct pipe_sampler_state **)samplers);
 421     cso_set_fragment_sampler_views(ctx->cso, ctx->num_bound_samplers,
 422                                    ctx->bound_sampler_views);
 423 }
 424
 425 int
 426 xa_composite_prepare(struct xa_context *ctx,
 427                      const struct xa_composite *comp)
 428 {
 429     struct xa_surface *dst_srf = comp->dst->srf;
 430     int ret;
 431
 432     ret = xa_surface_psurf_create(ctx, dst_srf);
 433     if (ret != XA_ERR_NONE)
 434         return ret;
 435
 436     renderer_bind_destination(ctx, dst_srf->srf,
 437                               dst_srf->srf->width,
 438                               dst_srf->srf->height);
 439
 440     bind_composite_blend_state(ctx, comp);
 441     bind_shaders(ctx, comp);
 442     bind_samplers(ctx, comp);
 443
 444     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 445         renderer_begin_solid(ctx);
 446     } else {
 447         renderer_begin_textures(ctx);
 448         ctx->comp = comp;
 449     }
 450
 451     xa_surface_psurf_destroy(dst_srf);
 452     return XA_ERR_NONE;
 453 }
 454
 455 void xa_composite_rect(struct xa_context *ctx,
 456                        int srcX, int srcY, int maskX, int maskY,
 457                        int dstX, int dstY, int width, int height)
 458 {
 459     if (ctx->num_bound_samplers == 0 ) { /* solid fill */
 460         renderer_solid(ctx, dstX, dstY, dstX + width, dstY + height,
 461                        ctx->solid_color);
 462     } else {
 463         const struct xa_composite *comp = ctx->comp;
 464         int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
 465         const float *src_matrix = NULL;
 466         const float *mask_matrix = NULL;
 467
 468         if (comp->src->has_transform)
 469             src_matrix = comp->src->transform;
 470         if (comp->mask && comp->mask->has_transform)
 471             mask_matrix = comp->mask->transform;
 472
 473         renderer_texture(ctx, pos, width, height,
 474                          src_matrix, mask_matrix);
 475     }
 476 }
 477
 478 void
 479 xa_composite_done(struct xa_context *ctx)
 480 {
 481     renderer_draw_flush(ctx);
 482     ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
 483
 484     ctx->comp = NULL;
 485     ctx->has_solid_color = FALSE;
 486     ctx->num_bound_samplers = 0;
 487 }
 488
 489 static const struct xa_composite_allocation a = {
 490     .xa_composite_size = sizeof(struct xa_composite),
 491     .xa_picture_size = sizeof(struct xa_picture),
 492     .xa_source_pict_size = sizeof(union xa_source_pict),
 493 };
 494
 495 const struct xa_composite_allocation *
 496 xa_composite_allocation(void)
 497 {
 498     return &a;
 499 }