src/gallium/drivers/i915/i915_surface.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "i915_surface.h"
  29 #include "i915_resource.h"
  30 #include "i915_state.h"
  31 #include "i915_blit.h"
  32 #include "i915_reg.h"
  33 #include "i915_screen.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_inlines.h"
  36 #include "util/u_math.h"
  37 #include "util/u_format.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_pack_color.h"
  40 #include "util/u_surface.h"
  41
  42 static struct pipe_surface *
  43 i915_create_surface_custom(struct pipe_context *ctx,
  44                            struct pipe_resource *pt,
  45                            const struct pipe_surface *surf_tmpl,
  46                            unsigned width0,
  47                            unsigned height0);
  48 /*
  49  * surface functions using the render engine
  50  */
  51
  52 static void
  53 i915_util_blitter_save_states(struct i915_context *i915)
  54 {
  55    util_blitter_save_blend(i915->blitter, (void *)i915->blend);
  56    util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
  57    util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
  58    util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
  59    util_blitter_save_fragment_shader(i915->blitter, i915->fs);
  60    util_blitter_save_vertex_shader(i915->blitter, i915->vs);
  61    util_blitter_save_viewport(i915->blitter, &i915->viewport);
  62    util_blitter_save_scissor(i915->blitter, &i915->scissor);
  63    util_blitter_save_vertex_elements(i915->blitter, i915->velems);
  64    util_blitter_save_vertex_buffer_slot(i915->blitter,
  65                                     i915->vertex_buffers);
  66
  67    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
  68
  69    util_blitter_save_fragment_sampler_states(i915->blitter,
  70                                              i915->num_samplers,
  71                                              (void**)i915->fragment_sampler);
  72    util_blitter_save_fragment_sampler_views(i915->blitter,
  73                                             i915->num_fragment_sampler_views,
  74                                             i915->fragment_sampler_views);
  75 }
  76
  77 static void
  78 i915_surface_copy_render(struct pipe_context *pipe,
  79                          struct pipe_resource *dst, unsigned dst_level,
  80                          unsigned dstx, unsigned dsty, unsigned dstz,
  81                          struct pipe_resource *src, unsigned src_level,
  82                          const struct pipe_box *src_box)
  83 {
  84    struct pipe_screen *screen = pipe->screen;
  85    struct i915_context *i915 = i915_context(pipe);
  86    struct i915_texture *dst_tex = i915_texture(dst);
  87    struct i915_texture *src_tex = i915_texture(src);
  88    unsigned src_width0 = src->width0;
  89    unsigned src_height0 = src->height0;
  90    unsigned dst_width0 = dst->width0;
  91    unsigned dst_height0 = dst->height0;
  92    unsigned layout;
  93    struct pipe_box dstbox;
  94    struct pipe_sampler_view src_templ, *src_view;
  95    struct pipe_surface dst_templ, *dst_view;
  96
  97    /* Fallback for buffers. */
  98    if ((dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER)) {
  99       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 100                                 src, src_level, src_box);
 101       return;
 102    }
 103
 104    layout = util_format_description(dst_templ.format)->layout;
 105
 106    if (!util_blitter_is_copy_supported(i915->blitter, dst, src)) {
 107       switch (util_format_get_blocksize(dst_templ.format)) {
 108          case 1:
 109             dst_templ.format = PIPE_FORMAT_I8_UNORM;
 110             break;
 111          case 2:
 112             dst_templ.format = PIPE_FORMAT_B5G6R5_UNORM;
 113             break;
 114          case 4:
 115             dst_templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 116             break;
 117          default:
 118             debug_printf("i915: copy_region: Unhandled format: %s. Falling back to software.\n"
 119                          "i915: copy_region: Software fallback doesn't work for tiled textures.\n",
 120                          util_format_short_name(dst_templ.format));
 121       }
 122       src_templ.format = dst_templ.format;
 123    }
 124
 125    i915_util_blitter_save_states(i915);
 126
 127    util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz);
 128    util_blitter_default_src_texture(&src_templ, src, src_level);
 129
 130    dst_view = i915_create_surface_custom(pipe, dst, &dst_templ, dst_width0, dst_height0);
 131    src_view = i915_create_sampler_view_custom(pipe, src, &src_templ, src_width0, src_height0);
 132
 133    u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
 134             abs(src_box->depth), &dstbox);
 135
 136    util_blitter_blit_generic(i915->blitter, dst_view, &dstbox,
 137                              src_view, src_box, src_width0, src_height0,
 138                              PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL);
 139 }
 140
 141 static void
 142 i915_clear_render_target_render(struct pipe_context *pipe,
 143                                 struct pipe_surface *dst,
 144                                 const union pipe_color_union *color,
 145                                 unsigned dstx, unsigned dsty,
 146                                 unsigned width, unsigned height)
 147 {
 148    struct i915_context *i915 = i915_context(pipe);
 149    struct pipe_framebuffer_state fb_state;
 150
 151    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 152
 153    fb_state.width = dst->width;
 154    fb_state.height = dst->height;
 155    fb_state.nr_cbufs = 1;
 156    fb_state.cbufs[0] = dst;
 157    fb_state.zsbuf = NULL;
 158    pipe->set_framebuffer_state(pipe, &fb_state);
 159
 160    if (i915->dirty)
 161       i915_update_derived(i915);
 162
 163    i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
 164                    dstx, dsty, width, height);
 165
 166    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 167    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 168    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 169 }
 170
 171 static void
 172 i915_clear_depth_stencil_render(struct pipe_context *pipe,
 173                                 struct pipe_surface *dst,
 174                                 unsigned clear_flags,
 175                                 double depth,
 176                                 unsigned stencil,
 177                                 unsigned dstx, unsigned dsty,
 178                                 unsigned width, unsigned height)
 179 {
 180    struct i915_context *i915 = i915_context(pipe);
 181    struct pipe_framebuffer_state fb_state;
 182
 183    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 184
 185    fb_state.width = dst->width;
 186    fb_state.height = dst->height;
 187    fb_state.nr_cbufs = 0;
 188    fb_state.zsbuf = dst;
 189    pipe->set_framebuffer_state(pipe, &fb_state);
 190
 191    if (i915->dirty)
 192       i915_update_derived(i915);
 193
 194    i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
 195                    NULL, depth, stencil,
 196                    dstx, dsty, width, height);
 197
 198    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 199    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 200    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 201 }
 202
 203 /*
 204  * surface functions using the blitter
 205  */
 206
 207 /* Assumes all values are within bounds -- no checking at this level -
 208  * do it higher up if required.
 209  */
 210 static void
 211 i915_surface_copy_blitter(struct pipe_context *pipe,
 212                           struct pipe_resource *dst, unsigned dst_level,
 213                           unsigned dstx, unsigned dsty, unsigned dstz,
 214                           struct pipe_resource *src, unsigned src_level,
 215                           const struct pipe_box *src_box)
 216 {
 217    struct i915_texture *dst_tex = i915_texture(dst);
 218    struct i915_texture *src_tex = i915_texture(src);
 219    struct pipe_resource *dpt = &dst_tex->b.b;
 220    struct pipe_resource *spt = &src_tex->b.b;
 221    unsigned dst_offset, src_offset;  /* in bytes */
 222
 223    /* Fallback for buffers. */
 224    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 225       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 226                                 src, src_level, src_box);
 227       return;
 228    }
 229
 230    /* XXX cannot copy 3d regions at this time */
 231    assert(src_box->depth == 1);
 232    if (dst->target != PIPE_TEXTURE_CUBE &&
 233        dst->target != PIPE_TEXTURE_3D)
 234       assert(dstz == 0);
 235    dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
 236
 237    if (src->target != PIPE_TEXTURE_CUBE &&
 238        src->target != PIPE_TEXTURE_3D)
 239       assert(src_box->z == 0);
 240    src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
 241
 242    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
 243    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
 244    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
 245    assert( util_format_get_blockwidth(dpt->format) == 1 );
 246    assert( util_format_get_blockheight(dpt->format) == 1 );
 247
 248    i915_copy_blit( i915_context(pipe),
 249                    util_format_get_blocksize(dpt->format),
 250                    (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
 251                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
 252                    (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
 253                    (short) src_box->width, (short) src_box->height );
 254 }
 255
 256 static void
 257 i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
 258 {
 259    struct i915_context *i915 = i915_context(pipe);
 260    struct pipe_blit_info info = *blit_info;
 261
 262    if (util_try_blit_via_copy_region(pipe, &info)) {
 263       return; /* done */
 264    }
 265
 266    if (info.mask & PIPE_MASK_S) {
 267       debug_printf("i915: cannot blit stencil, skipping\n");
 268       info.mask &= ~PIPE_MASK_S;
 269    }
 270
 271    if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
 272       debug_printf("i915: blit unsupported %s -> %s\n",
 273                    util_format_short_name(info.src.resource->format),
 274                    util_format_short_name(info.dst.resource->format));
 275       return;
 276    }
 277
 278    i915_util_blitter_save_states(i915);
 279
 280    util_blitter_blit(i915->blitter, &info);
 281 }
 282
 283 static void
 284 i915_flush_resource(struct pipe_context *ctx, struct pipe_resource *resource)
 285 {
 286 }
 287
 288 static void
 289 i915_clear_render_target_blitter(struct pipe_context *pipe,
 290                                  struct pipe_surface *dst,
 291                                  const union pipe_color_union *color,
 292                                  unsigned dstx, unsigned dsty,
 293                                  unsigned width, unsigned height)
 294 {
 295    struct i915_texture *tex = i915_texture(dst->texture);
 296    struct pipe_resource *pt = &tex->b.b;
 297    union util_color uc;
 298    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 299
 300    assert(util_format_get_blockwidth(pt->format) == 1);
 301    assert(util_format_get_blockheight(pt->format) == 1);
 302
 303    util_pack_color(color->f, dst->format, &uc);
 304    i915_fill_blit( i915_context(pipe),
 305                    util_format_get_blocksize(pt->format),
 306                    XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
 307                    (unsigned short) tex->stride,
 308                    tex->buffer, offset,
 309                    (short) dstx, (short) dsty,
 310                    (short) width, (short) height,
 311                    uc.ui[0] );
 312 }
 313
 314 static void
 315 i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
 316                                  struct pipe_surface *dst,
 317                                  unsigned clear_flags,
 318                                  double depth,
 319                                  unsigned stencil,
 320                                  unsigned dstx, unsigned dsty,
 321                                  unsigned width, unsigned height)
 322 {
 323    struct i915_texture *tex = i915_texture(dst->texture);
 324    struct pipe_resource *pt = &tex->b.b;
 325    unsigned packedds;
 326    unsigned mask = 0;
 327    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 328
 329    assert(util_format_get_blockwidth(pt->format) == 1);
 330    assert(util_format_get_blockheight(pt->format) == 1);
 331
 332    packedds = util_pack_z_stencil(dst->format, depth, stencil);
 333
 334    if (clear_flags & PIPE_CLEAR_DEPTH)
 335       mask |= XY_COLOR_BLT_WRITE_RGB;
 336    /* XXX presumably this does read-modify-write
 337       (otherwise this won't work anyway). Hence will only want to
 338       do it if really have stencil and it isn't cleared */
 339    if ((clear_flags & PIPE_CLEAR_STENCIL) ||
 340        (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
 341       mask |= XY_COLOR_BLT_WRITE_ALPHA;
 342
 343    i915_fill_blit( i915_context(pipe),
 344                    util_format_get_blocksize(pt->format),
 345                    mask,
 346                    (unsigned short) tex->stride,
 347                    tex->buffer, offset,
 348                    (short) dstx, (short) dsty,
 349                    (short) width, (short) height,
 350                    packedds );
 351 }
 352
 353 /*
 354  * Screen surface functions
 355  */
 356
 357
 358 static struct pipe_surface *
 359 i915_create_surface_custom(struct pipe_context *ctx,
 360                            struct pipe_resource *pt,
 361                            const struct pipe_surface *surf_tmpl,
 362                            unsigned width0,
 363                            unsigned height0)
 364 {
 365    struct pipe_surface *ps;
 366
 367    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 368    if (pt->target != PIPE_TEXTURE_CUBE &&
 369        pt->target != PIPE_TEXTURE_3D)
 370       assert(surf_tmpl->u.tex.first_layer == 0);
 371
 372    ps = CALLOC_STRUCT(pipe_surface);
 373    if (ps) {
 374       /* could subclass pipe_surface and store offset as it used to do */
 375       pipe_reference_init(&ps->reference, 1);
 376       pipe_resource_reference(&ps->texture, pt);
 377       ps->format = surf_tmpl->format;
 378       ps->width = u_minify(width0, surf_tmpl->u.tex.level);
 379       ps->height = u_minify(height0, surf_tmpl->u.tex.level);
 380       ps->u.tex.level = surf_tmpl->u.tex.level;
 381       ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 382       ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 383       ps->context = ctx;
 384    }
 385    return ps;
 386 }
 387
 388 static struct pipe_surface *
 389 i915_create_surface(struct pipe_context *ctx,
 390                     struct pipe_resource *pt,
 391                     const struct pipe_surface *surf_tmpl)
 392 {
 393    return i915_create_surface_custom(ctx, pt, surf_tmpl,
 394                                      pt->width0, pt->height0);
 395 }
 396
 397 static void
 398 i915_surface_destroy(struct pipe_context *ctx,
 399                      struct pipe_surface *surf)
 400 {
 401    pipe_resource_reference(&surf->texture, NULL);
 402    FREE(surf);
 403 }
 404
 405
 406 void
 407 i915_init_surface_functions(struct i915_context *i915)
 408 {
 409    if (i915_screen(i915->base.screen)->debug.use_blitter) {
 410       i915->base.resource_copy_region = i915_surface_copy_blitter;
 411       i915->base.clear_render_target = i915_clear_render_target_blitter;
 412       i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
 413    } else {
 414       i915->base.resource_copy_region = i915_surface_copy_render;
 415       i915->base.clear_render_target = i915_clear_render_target_render;
 416       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
 417    }
 418    i915->base.blit = i915_blit;
 419    i915->base.flush_resource = i915_flush_resource;
 420    i915->base.create_surface = i915_create_surface;
 421    i915->base.surface_destroy = i915_surface_destroy;
 422 }