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/format/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 i915_context *i915 = i915_context(pipe);
  85    unsigned src_width0 = src->width0;
  86    unsigned src_height0 = src->height0;
  87    unsigned dst_width0 = dst->width0;
  88    unsigned dst_height0 = dst->height0;
  89    struct pipe_box dstbox;
  90    struct pipe_sampler_view src_templ, *src_view;
  91    struct pipe_surface dst_templ, *dst_view;
  92    const struct util_format_description *desc;
  93
  94    /* Fallback for buffers. */
  95    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER)
  96       goto fallback;
  97
  98    /* Fallback for depth&stencil. XXX: see if we can use a proxy format */
  99    desc = util_format_description(src->format);
 100    if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 101       goto fallback;
 102
 103    desc = util_format_description(dst->format);
 104    if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 105       goto fallback;
 106
 107    util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz);
 108    util_blitter_default_src_texture(i915->blitter, &src_templ, src, src_level);
 109
 110    if (!util_blitter_is_copy_supported(i915->blitter, dst, src))
 111       goto fallback;
 112
 113    i915_util_blitter_save_states(i915);
 114
 115    dst_view = i915_create_surface_custom(pipe, dst, &dst_templ, dst_width0, dst_height0);
 116    src_view = i915_create_sampler_view_custom(pipe, src, &src_templ, src_width0, src_height0);
 117
 118    u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
 119             abs(src_box->depth), &dstbox);
 120
 121    util_blitter_blit_generic(i915->blitter, dst_view, &dstbox,
 122                              src_view, src_box, src_width0, src_height0,
 123                              PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL,
 124                              FALSE);
 125    return;
 126
 127 fallback:
 128    util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 129                              src, src_level, src_box);
 130 }
 131
 132 static void
 133 i915_clear_render_target_render(struct pipe_context *pipe,
 134                                 struct pipe_surface *dst,
 135                                 const union pipe_color_union *color,
 136                                 unsigned dstx, unsigned dsty,
 137                                 unsigned width, unsigned height,
 138                                 bool render_condition_enabled)
 139 {
 140    struct i915_context *i915 = i915_context(pipe);
 141    struct pipe_framebuffer_state fb_state;
 142
 143    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 144
 145    fb_state.width = dst->width;
 146    fb_state.height = dst->height;
 147    fb_state.nr_cbufs = 1;
 148    fb_state.cbufs[0] = dst;
 149    fb_state.zsbuf = NULL;
 150    pipe->set_framebuffer_state(pipe, &fb_state);
 151
 152    if (i915->dirty)
 153       i915_update_derived(i915);
 154
 155    i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
 156                    dstx, dsty, width, height);
 157
 158    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 159    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 160    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 161 }
 162
 163 static void
 164 i915_clear_depth_stencil_render(struct pipe_context *pipe,
 165                                 struct pipe_surface *dst,
 166                                 unsigned clear_flags,
 167                                 double depth,
 168                                 unsigned stencil,
 169                                 unsigned dstx, unsigned dsty,
 170                                 unsigned width, unsigned height,
 171                                 bool render_condition_enabled)
 172 {
 173    struct i915_context *i915 = i915_context(pipe);
 174    struct pipe_framebuffer_state fb_state;
 175
 176    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 177
 178    fb_state.width = dst->width;
 179    fb_state.height = dst->height;
 180    fb_state.nr_cbufs = 0;
 181    fb_state.zsbuf = dst;
 182    pipe->set_framebuffer_state(pipe, &fb_state);
 183
 184    if (i915->dirty)
 185       i915_update_derived(i915);
 186
 187    i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
 188                    NULL, depth, stencil,
 189                    dstx, dsty, width, height);
 190
 191    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 192    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 193    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 194 }
 195
 196 /*
 197  * surface functions using the blitter
 198  */
 199
 200 /* Assumes all values are within bounds -- no checking at this level -
 201  * do it higher up if required.
 202  */
 203 static void
 204 i915_surface_copy_blitter(struct pipe_context *pipe,
 205                           struct pipe_resource *dst, unsigned dst_level,
 206                           unsigned dstx, unsigned dsty, unsigned dstz,
 207                           struct pipe_resource *src, unsigned src_level,
 208                           const struct pipe_box *src_box)
 209 {
 210    struct i915_texture *dst_tex = i915_texture(dst);
 211    struct i915_texture *src_tex = i915_texture(src);
 212    struct pipe_resource *dpt = &dst_tex->b.b;
 213    struct pipe_resource *spt = &src_tex->b.b;
 214    unsigned dst_offset, src_offset;  /* in bytes */
 215
 216    /* Fallback for buffers. */
 217    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 218       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 219                                 src, src_level, src_box);
 220       return;
 221    }
 222
 223    /* XXX cannot copy 3d regions at this time */
 224    assert(src_box->depth == 1);
 225    if (dst->target != PIPE_TEXTURE_CUBE &&
 226        dst->target != PIPE_TEXTURE_3D)
 227       assert(dstz == 0);
 228    dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
 229
 230    if (src->target != PIPE_TEXTURE_CUBE &&
 231        src->target != PIPE_TEXTURE_3D)
 232       assert(src_box->z == 0);
 233    src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
 234
 235    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
 236    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
 237    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
 238    assert( util_format_get_blockwidth(dpt->format) == 1 );
 239    assert( util_format_get_blockheight(dpt->format) == 1 );
 240
 241    i915_copy_blit( i915_context(pipe),
 242                    util_format_get_blocksize(dpt->format),
 243                    (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
 244                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
 245                    (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
 246                    (short) src_box->width, (short) src_box->height );
 247 }
 248
 249 static void
 250 i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
 251 {
 252    struct i915_context *i915 = i915_context(pipe);
 253    struct pipe_blit_info info = *blit_info;
 254
 255    if (util_try_blit_via_copy_region(pipe, &info)) {
 256       return; /* done */
 257    }
 258
 259    if (info.mask & PIPE_MASK_S) {
 260       debug_printf("i915: cannot blit stencil, skipping\n");
 261       info.mask &= ~PIPE_MASK_S;
 262    }
 263
 264    if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
 265       debug_printf("i915: blit unsupported %s -> %s\n",
 266                    util_format_short_name(info.src.resource->format),
 267                    util_format_short_name(info.dst.resource->format));
 268       return;
 269    }
 270
 271    i915_util_blitter_save_states(i915);
 272
 273    util_blitter_blit(i915->blitter, &info);
 274 }
 275
 276 static void
 277 i915_flush_resource(struct pipe_context *ctx, struct pipe_resource *resource)
 278 {
 279 }
 280
 281 static void
 282 i915_clear_render_target_blitter(struct pipe_context *pipe,
 283                                  struct pipe_surface *dst,
 284                                  const union pipe_color_union *color,
 285                                  unsigned dstx, unsigned dsty,
 286                                  unsigned width, unsigned height,
 287                                  bool render_condition_enabled)
 288 {
 289    struct i915_texture *tex = i915_texture(dst->texture);
 290    struct pipe_resource *pt = &tex->b.b;
 291    union util_color uc;
 292    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 293
 294    assert(util_format_get_blockwidth(pt->format) == 1);
 295    assert(util_format_get_blockheight(pt->format) == 1);
 296
 297    util_pack_color(color->f, dst->format, &uc);
 298    i915_fill_blit( i915_context(pipe),
 299                    util_format_get_blocksize(pt->format),
 300                    XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
 301                    (unsigned short) tex->stride,
 302                    tex->buffer, offset,
 303                    (short) dstx, (short) dsty,
 304                    (short) width, (short) height,
 305                    uc.ui[0] );
 306 }
 307
 308 static void
 309 i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
 310                                  struct pipe_surface *dst,
 311                                  unsigned clear_flags,
 312                                  double depth,
 313                                  unsigned stencil,
 314                                  unsigned dstx, unsigned dsty,
 315                                  unsigned width, unsigned height,
 316                                  bool render_condition_enabled)
 317 {
 318    struct i915_texture *tex = i915_texture(dst->texture);
 319    struct pipe_resource *pt = &tex->b.b;
 320    unsigned packedds;
 321    unsigned mask = 0;
 322    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 323
 324    assert(util_format_get_blockwidth(pt->format) == 1);
 325    assert(util_format_get_blockheight(pt->format) == 1);
 326
 327    packedds = util_pack_z_stencil(dst->format, depth, stencil);
 328
 329    if (clear_flags & PIPE_CLEAR_DEPTH)
 330       mask |= XY_COLOR_BLT_WRITE_RGB;
 331    /* XXX presumably this does read-modify-write
 332       (otherwise this won't work anyway). Hence will only want to
 333       do it if really have stencil and it isn't cleared */
 334    if ((clear_flags & PIPE_CLEAR_STENCIL) ||
 335        (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
 336       mask |= XY_COLOR_BLT_WRITE_ALPHA;
 337
 338    i915_fill_blit( i915_context(pipe),
 339                    util_format_get_blocksize(pt->format),
 340                    mask,
 341                    (unsigned short) tex->stride,
 342                    tex->buffer, offset,
 343                    (short) dstx, (short) dsty,
 344                    (short) width, (short) height,
 345                    packedds );
 346 }
 347
 348 /*
 349  * Screen surface functions
 350  */
 351
 352
 353 static struct pipe_surface *
 354 i915_create_surface_custom(struct pipe_context *ctx,
 355                            struct pipe_resource *pt,
 356                            const struct pipe_surface *surf_tmpl,
 357                            unsigned width0,
 358                            unsigned height0)
 359 {
 360    struct pipe_surface *ps;
 361
 362    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 363    if (pt->target != PIPE_TEXTURE_CUBE &&
 364        pt->target != PIPE_TEXTURE_3D)
 365       assert(surf_tmpl->u.tex.first_layer == 0);
 366
 367    ps = CALLOC_STRUCT(pipe_surface);
 368    if (ps) {
 369       /* could subclass pipe_surface and store offset as it used to do */
 370       pipe_reference_init(&ps->reference, 1);
 371       pipe_resource_reference(&ps->texture, pt);
 372       ps->format = surf_tmpl->format;
 373       ps->width = u_minify(width0, surf_tmpl->u.tex.level);
 374       ps->height = u_minify(height0, surf_tmpl->u.tex.level);
 375       ps->u.tex.level = surf_tmpl->u.tex.level;
 376       ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 377       ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 378       ps->context = ctx;
 379    }
 380    return ps;
 381 }
 382
 383 static struct pipe_surface *
 384 i915_create_surface(struct pipe_context *ctx,
 385                     struct pipe_resource *pt,
 386                     const struct pipe_surface *surf_tmpl)
 387 {
 388    return i915_create_surface_custom(ctx, pt, surf_tmpl,
 389                                      pt->width0, pt->height0);
 390 }
 391
 392 static void
 393 i915_surface_destroy(struct pipe_context *ctx,
 394                      struct pipe_surface *surf)
 395 {
 396    pipe_resource_reference(&surf->texture, NULL);
 397    FREE(surf);
 398 }
 399
 400
 401 void
 402 i915_init_surface_functions(struct i915_context *i915)
 403 {
 404    if (i915_screen(i915->base.screen)->debug.use_blitter) {
 405       i915->base.resource_copy_region = i915_surface_copy_blitter;
 406       i915->base.clear_render_target = i915_clear_render_target_blitter;
 407       i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
 408    } else {
 409       i915->base.resource_copy_region = i915_surface_copy_render;
 410       i915->base.clear_render_target = i915_clear_render_target_render;
 411       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
 412    }
 413    i915->base.blit = i915_blit;
 414    i915->base.flush_resource = i915_flush_resource;
 415    i915->base.create_surface = i915_create_surface;
 416    i915->base.surface_destroy = i915_surface_destroy;
 417 }