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