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 and npot. */
  98    if ((dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) ||
  99        !util_is_power_of_two(src_width0) || !util_is_power_of_two(src_height0)) {
 100       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 101                                 src, src_level, src_box);
 102       return;
 103    }
 104
 105    layout = util_format_description(dst_templ.format)->layout;
 106
 107    if (!util_blitter_is_copy_supported(i915->blitter, dst, src)) {
 108       switch (util_format_get_blocksize(dst_templ.format)) {
 109          case 1:
 110             dst_templ.format = PIPE_FORMAT_I8_UNORM;
 111             break;
 112          case 2:
 113             dst_templ.format = PIPE_FORMAT_B5G6R5_UNORM;
 114             break;
 115          case 4:
 116             dst_templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 117             break;
 118          default:
 119             debug_printf("i915: copy_region: Unhandled format: %s. Falling back to software.\n"
 120                          "i915: copy_region: Software fallback doesn't work for tiled textures.\n",
 121                          util_format_short_name(dst_templ.format));
 122       }
 123       src_templ.format = dst_templ.format;
 124    }
 125
 126    i915_util_blitter_save_states(i915);
 127
 128    util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz);
 129    util_blitter_default_src_texture(&src_templ, src, src_level);
 130
 131    dst_view = i915_create_surface_custom(pipe, dst, &dst_templ, dst_width0, dst_height0);
 132    src_view = i915_create_sampler_view_custom(pipe, src, &src_templ, src_width0, src_height0);
 133
 134    u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
 135             abs(src_box->depth), &dstbox);
 136
 137    util_blitter_blit_generic(i915->blitter, dst_view, &dstbox,
 138                              src_view, src_box, src_width0, src_height0,
 139                              PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL);
 140 }
 141
 142 static void
 143 i915_clear_render_target_render(struct pipe_context *pipe,
 144                                 struct pipe_surface *dst,
 145                                 const union pipe_color_union *color,
 146                                 unsigned dstx, unsigned dsty,
 147                                 unsigned width, unsigned height)
 148 {
 149    struct i915_context *i915 = i915_context(pipe);
 150    struct pipe_framebuffer_state fb_state;
 151
 152    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 153
 154    fb_state.width = dst->width;
 155    fb_state.height = dst->height;
 156    fb_state.nr_cbufs = 1;
 157    fb_state.cbufs[0] = dst;
 158    fb_state.zsbuf = NULL;
 159    pipe->set_framebuffer_state(pipe, &fb_state);
 160
 161    if (i915->dirty)
 162       i915_update_derived(i915);
 163
 164    i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
 165                    dstx, dsty, width, height);
 166
 167    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 168    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 169    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 170 }
 171
 172 static void
 173 i915_clear_depth_stencil_render(struct pipe_context *pipe,
 174                                 struct pipe_surface *dst,
 175                                 unsigned clear_flags,
 176                                 double depth,
 177                                 unsigned stencil,
 178                                 unsigned dstx, unsigned dsty,
 179                                 unsigned width, unsigned height)
 180 {
 181    struct i915_context *i915 = i915_context(pipe);
 182    struct pipe_framebuffer_state fb_state;
 183
 184    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 185
 186    fb_state.width = dst->width;
 187    fb_state.height = dst->height;
 188    fb_state.nr_cbufs = 0;
 189    fb_state.zsbuf = dst;
 190    pipe->set_framebuffer_state(pipe, &fb_state);
 191
 192    if (i915->dirty)
 193       i915_update_derived(i915);
 194
 195    i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
 196                    NULL, depth, stencil,
 197                    dstx, dsty, width, height);
 198
 199    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 200    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 201    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 202 }
 203
 204 /*
 205  * surface functions using the blitter
 206  */
 207
 208 /* Assumes all values are within bounds -- no checking at this level -
 209  * do it higher up if required.
 210  */
 211 static void
 212 i915_surface_copy_blitter(struct pipe_context *pipe,
 213                           struct pipe_resource *dst, unsigned dst_level,
 214                           unsigned dstx, unsigned dsty, unsigned dstz,
 215                           struct pipe_resource *src, unsigned src_level,
 216                           const struct pipe_box *src_box)
 217 {
 218    struct i915_texture *dst_tex = i915_texture(dst);
 219    struct i915_texture *src_tex = i915_texture(src);
 220    struct pipe_resource *dpt = &dst_tex->b.b;
 221    struct pipe_resource *spt = &src_tex->b.b;
 222    unsigned dst_offset, src_offset;  /* in bytes */
 223
 224    /* Fallback for buffers. */
 225    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 226       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 227                                 src, src_level, src_box);
 228       return;
 229    }
 230
 231    /* XXX cannot copy 3d regions at this time */
 232    assert(src_box->depth == 1);
 233    if (dst->target != PIPE_TEXTURE_CUBE &&
 234        dst->target != PIPE_TEXTURE_3D)
 235       assert(dstz == 0);
 236    dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
 237
 238    if (src->target != PIPE_TEXTURE_CUBE &&
 239        src->target != PIPE_TEXTURE_3D)
 240       assert(src_box->z == 0);
 241    src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
 242
 243    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
 244    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
 245    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
 246    assert( util_format_get_blockwidth(dpt->format) == 1 );
 247    assert( util_format_get_blockheight(dpt->format) == 1 );
 248
 249    i915_copy_blit( i915_context(pipe),
 250                    util_format_get_blocksize(dpt->format),
 251                    (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
 252                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
 253                    (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
 254                    (short) src_box->width, (short) src_box->height );
 255 }
 256
 257 static void
 258 i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
 259 {
 260    struct i915_context *i915 = i915_context(pipe);
 261    struct pipe_blit_info info = *blit_info;
 262
 263    if (util_try_blit_via_copy_region(pipe, &info)) {
 264       return; /* done */
 265    }
 266
 267    if (info.mask & PIPE_MASK_S) {
 268       debug_printf("i915: cannot blit stencil, skipping\n");
 269       info.mask &= ~PIPE_MASK_S;
 270    }
 271
 272    if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
 273       debug_printf("i915: blit unsupported %s -> %s\n",
 274                    util_format_short_name(info.src.resource->format),
 275                    util_format_short_name(info.dst.resource->format));
 276       return;
 277    }
 278
 279    i915_util_blitter_save_states(i915);
 280
 281    util_blitter_blit(i915->blitter, &info);
 282 }
 283
 284 static void
 285 i915_flush_resource(struct pipe_context *ctx, struct pipe_resource *resource)
 286 {
 287 }
 288
 289 static void
 290 i915_clear_render_target_blitter(struct pipe_context *pipe,
 291                                  struct pipe_surface *dst,
 292                                  const union pipe_color_union *color,
 293                                  unsigned dstx, unsigned dsty,
 294                                  unsigned width, unsigned height)
 295 {
 296    struct i915_texture *tex = i915_texture(dst->texture);
 297    struct pipe_resource *pt = &tex->b.b;
 298    union util_color uc;
 299    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 300
 301    assert(util_format_get_blockwidth(pt->format) == 1);
 302    assert(util_format_get_blockheight(pt->format) == 1);
 303
 304    util_pack_color(color->f, dst->format, &uc);
 305    i915_fill_blit( i915_context(pipe),
 306                    util_format_get_blocksize(pt->format),
 307                    XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
 308                    (unsigned short) tex->stride,
 309                    tex->buffer, offset,
 310                    (short) dstx, (short) dsty,
 311                    (short) width, (short) height,
 312                    uc.ui[0] );
 313 }
 314
 315 static void
 316 i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
 317                                  struct pipe_surface *dst,
 318                                  unsigned clear_flags,
 319                                  double depth,
 320                                  unsigned stencil,
 321                                  unsigned dstx, unsigned dsty,
 322                                  unsigned width, unsigned height)
 323 {
 324    struct i915_texture *tex = i915_texture(dst->texture);
 325    struct pipe_resource *pt = &tex->b.b;
 326    unsigned packedds;
 327    unsigned mask = 0;
 328    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 329
 330    assert(util_format_get_blockwidth(pt->format) == 1);
 331    assert(util_format_get_blockheight(pt->format) == 1);
 332
 333    packedds = util_pack_z_stencil(dst->format, depth, stencil);
 334
 335    if (clear_flags & PIPE_CLEAR_DEPTH)
 336       mask |= XY_COLOR_BLT_WRITE_RGB;
 337    /* XXX presumably this does read-modify-write
 338       (otherwise this won't work anyway). Hence will only want to
 339       do it if really have stencil and it isn't cleared */
 340    if ((clear_flags & PIPE_CLEAR_STENCIL) ||
 341        (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
 342       mask |= XY_COLOR_BLT_WRITE_ALPHA;
 343
 344    i915_fill_blit( i915_context(pipe),
 345                    util_format_get_blocksize(pt->format),
 346                    mask,
 347                    (unsigned short) tex->stride,
 348                    tex->buffer, offset,
 349                    (short) dstx, (short) dsty,
 350                    (short) width, (short) height,
 351                    packedds );
 352 }
 353
 354 /*
 355  * Screen surface functions
 356  */
 357
 358
 359 static struct pipe_surface *
 360 i915_create_surface_custom(struct pipe_context *ctx,
 361                            struct pipe_resource *pt,
 362                            const struct pipe_surface *surf_tmpl,
 363                            unsigned width0,
 364                            unsigned height0)
 365 {
 366    struct pipe_surface *ps;
 367
 368    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 369    if (pt->target != PIPE_TEXTURE_CUBE &&
 370        pt->target != PIPE_TEXTURE_3D)
 371       assert(surf_tmpl->u.tex.first_layer == 0);
 372
 373    ps = CALLOC_STRUCT(pipe_surface);
 374    if (ps) {
 375       /* could subclass pipe_surface and store offset as it used to do */
 376       pipe_reference_init(&ps->reference, 1);
 377       pipe_resource_reference(&ps->texture, pt);
 378       ps->format = surf_tmpl->format;
 379       ps->width = u_minify(width0, surf_tmpl->u.tex.level);
 380       ps->height = u_minify(height0, surf_tmpl->u.tex.level);
 381       ps->u.tex.level = surf_tmpl->u.tex.level;
 382       ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 383       ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 384       ps->context = ctx;
 385    }
 386    return ps;
 387 }
 388
 389 static struct pipe_surface *
 390 i915_create_surface(struct pipe_context *ctx,
 391                     struct pipe_resource *pt,
 392                     const struct pipe_surface *surf_tmpl)
 393 {
 394    return i915_create_surface_custom(ctx, pt, surf_tmpl,
 395                                      pt->width0, pt->height0);
 396 }
 397
 398 static void
 399 i915_surface_destroy(struct pipe_context *ctx,
 400                      struct pipe_surface *surf)
 401 {
 402    pipe_resource_reference(&surf->texture, NULL);
 403    FREE(surf);
 404 }
 405
 406
 407 void
 408 i915_init_surface_functions(struct i915_context *i915)
 409 {
 410    if (i915_screen(i915->base.screen)->debug.use_blitter) {
 411       i915->base.resource_copy_region = i915_surface_copy_blitter;
 412       i915->base.clear_render_target = i915_clear_render_target_blitter;
 413       i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
 414    } else {
 415       i915->base.resource_copy_region = i915_surface_copy_render;
 416       i915->base.clear_render_target = i915_clear_render_target_render;
 417       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
 418    }
 419    i915->base.blit = i915_blit;
 420    i915->base.flush_resource = i915_flush_resource;
 421    i915->base.create_surface = i915_create_surface;
 422    i915->base.surface_destroy = i915_surface_destroy;
 423 }