src/gallium/drivers/i915/i915_surface.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 /*
  43  * surface functions using the render engine
  44  */
  45
  46 static void
  47 i915_util_blitter_save_states(struct i915_context *i915)
  48 {
  49    util_blitter_save_blend(i915->blitter, (void *)i915->blend);
  50    util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
  51    util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
  52    util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
  53    util_blitter_save_fragment_shader(i915->blitter, i915->fs);
  54    util_blitter_save_vertex_shader(i915->blitter, i915->vs);
  55    util_blitter_save_viewport(i915->blitter, &i915->viewport);
  56    util_blitter_save_scissor(i915->blitter, &i915->scissor);
  57    util_blitter_save_vertex_elements(i915->blitter, i915->velems);
  58    util_blitter_save_vertex_buffer_slot(i915->blitter,
  59                                     i915->vertex_buffers);
  60
  61    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
  62
  63    util_blitter_save_fragment_sampler_states(i915->blitter,
  64                                              i915->num_samplers,
  65                                              (void**)i915->sampler);
  66    util_blitter_save_fragment_sampler_views(i915->blitter,
  67                                             i915->num_fragment_sampler_views,
  68                                             i915->fragment_sampler_views);
  69 }
  70
  71 static void
  72 i915_surface_copy_render(struct pipe_context *pipe,
  73                          struct pipe_resource *dst, unsigned dst_level,
  74                          unsigned dstx, unsigned dsty, unsigned dstz,
  75                          struct pipe_resource *src, unsigned src_level,
  76                          const struct pipe_box *src_box)
  77 {
  78    struct i915_context *i915 = i915_context(pipe);
  79
  80    /* Fallback for buffers. */
  81    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
  82       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
  83                                 src, src_level, src_box);
  84       return;
  85    }
  86
  87    if (!util_blitter_is_copy_supported(i915->blitter, dst, src,
  88                                        PIPE_MASK_RGBAZS)) {
  89       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
  90                                 src, src_level, src_box);
  91       return;
  92    }
  93
  94    i915_util_blitter_save_states(i915);
  95
  96    util_blitter_copy_texture(i915->blitter, dst, dst_level, dstx, dsty, dstz,
  97                             src, src_level, src_box, PIPE_MASK_RGBAZS, TRUE);
  98 }
  99
 100 static void
 101 i915_clear_render_target_render(struct pipe_context *pipe,
 102                                 struct pipe_surface *dst,
 103                                 const union pipe_color_union *color,
 104                                 unsigned dstx, unsigned dsty,
 105                                 unsigned width, unsigned height)
 106 {
 107    struct i915_context *i915 = i915_context(pipe);
 108    struct pipe_framebuffer_state fb_state;
 109
 110    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 111
 112    fb_state.width = dst->width;
 113    fb_state.height = dst->height;
 114    fb_state.nr_cbufs = 1;
 115    fb_state.cbufs[0] = dst;
 116    fb_state.zsbuf = NULL;
 117    pipe->set_framebuffer_state(pipe, &fb_state);
 118
 119    if (i915->dirty)
 120       i915_update_derived(i915);
 121
 122    i915_clear_emit(pipe, PIPE_CLEAR_COLOR, color, 0.0, 0x0,
 123                    dstx, dsty, width, height);
 124
 125    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 126    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 127    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 128 }
 129
 130 static void
 131 i915_clear_depth_stencil_render(struct pipe_context *pipe,
 132                                 struct pipe_surface *dst,
 133                                 unsigned clear_flags,
 134                                 double depth,
 135                                 unsigned stencil,
 136                                 unsigned dstx, unsigned dsty,
 137                                 unsigned width, unsigned height)
 138 {
 139    struct i915_context *i915 = i915_context(pipe);
 140    struct pipe_framebuffer_state fb_state;
 141
 142    util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
 143
 144    fb_state.width = dst->width;
 145    fb_state.height = dst->height;
 146    fb_state.nr_cbufs = 0;
 147    fb_state.zsbuf = dst;
 148    pipe->set_framebuffer_state(pipe, &fb_state);
 149
 150    if (i915->dirty)
 151       i915_update_derived(i915);
 152
 153    i915_clear_emit(pipe, clear_flags & PIPE_CLEAR_DEPTHSTENCIL,
 154                    NULL, depth, stencil,
 155                    dstx, dsty, width, height);
 156
 157    pipe->set_framebuffer_state(pipe, &i915->blitter->saved_fb_state);
 158    util_unreference_framebuffer_state(&i915->blitter->saved_fb_state);
 159    i915->blitter->saved_fb_state.nr_cbufs = ~0;
 160 }
 161
 162 /*
 163  * surface functions using the blitter
 164  */
 165
 166 /* Assumes all values are within bounds -- no checking at this level -
 167  * do it higher up if required.
 168  */
 169 static void
 170 i915_surface_copy_blitter(struct pipe_context *pipe,
 171                           struct pipe_resource *dst, unsigned dst_level,
 172                           unsigned dstx, unsigned dsty, unsigned dstz,
 173                           struct pipe_resource *src, unsigned src_level,
 174                           const struct pipe_box *src_box)
 175 {
 176    struct i915_texture *dst_tex = i915_texture(dst);
 177    struct i915_texture *src_tex = i915_texture(src);
 178    struct pipe_resource *dpt = &dst_tex->b.b;
 179    struct pipe_resource *spt = &src_tex->b.b;
 180    unsigned dst_offset, src_offset;  /* in bytes */
 181
 182    /* Fallback for buffers. */
 183    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
 184       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
 185                                 src, src_level, src_box);
 186       return;
 187    }
 188
 189    /* XXX cannot copy 3d regions at this time */
 190    assert(src_box->depth == 1);
 191    if (dst->target != PIPE_TEXTURE_CUBE &&
 192        dst->target != PIPE_TEXTURE_3D)
 193       assert(dstz == 0);
 194    dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
 195
 196    if (src->target != PIPE_TEXTURE_CUBE &&
 197        src->target != PIPE_TEXTURE_3D)
 198       assert(src_box->z == 0);
 199    src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
 200
 201    assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
 202    assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
 203    assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
 204    assert( util_format_get_blockwidth(dpt->format) == 1 );
 205    assert( util_format_get_blockheight(dpt->format) == 1 );
 206
 207    i915_copy_blit( i915_context(pipe),
 208                    util_format_get_blocksize(dpt->format),
 209                    (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
 210                    (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
 211                    (short) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
 212                    (short) src_box->width, (short) src_box->height );
 213 }
 214
 215 static void
 216 i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
 217 {
 218    struct i915_context *i915 = i915_context(pipe);
 219    struct pipe_blit_info info = *blit_info;
 220
 221    if (util_try_blit_via_copy_region(pipe, &info)) {
 222       return; /* done */
 223    }
 224
 225    if (info.mask & PIPE_MASK_S) {
 226       debug_printf("i915: cannot blit stencil, skipping\n");
 227       info.mask &= ~PIPE_MASK_S;
 228    }
 229
 230    if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
 231       debug_printf("i915: blit unsupported %s -> %s\n",
 232                    util_format_short_name(info.src.resource->format),
 233                    util_format_short_name(info.dst.resource->format));
 234       return;
 235    }
 236
 237    i915_util_blitter_save_states(i915);
 238
 239    util_blitter_blit(i915->blitter, &info);
 240 }
 241
 242 static void
 243 i915_clear_render_target_blitter(struct pipe_context *pipe,
 244                                  struct pipe_surface *dst,
 245                                  const union pipe_color_union *color,
 246                                  unsigned dstx, unsigned dsty,
 247                                  unsigned width, unsigned height)
 248 {
 249    struct i915_texture *tex = i915_texture(dst->texture);
 250    struct pipe_resource *pt = &tex->b.b;
 251    union util_color uc;
 252    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 253
 254    assert(util_format_get_blockwidth(pt->format) == 1);
 255    assert(util_format_get_blockheight(pt->format) == 1);
 256
 257    util_pack_color(color->f, dst->format, &uc);
 258    i915_fill_blit( i915_context(pipe),
 259                    util_format_get_blocksize(pt->format),
 260                    XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
 261                    (unsigned short) tex->stride,
 262                    tex->buffer, offset,
 263                    (short) dstx, (short) dsty,
 264                    (short) width, (short) height,
 265                    uc.ui );
 266 }
 267
 268 static void
 269 i915_clear_depth_stencil_blitter(struct pipe_context *pipe,
 270                                  struct pipe_surface *dst,
 271                                  unsigned clear_flags,
 272                                  double depth,
 273                                  unsigned stencil,
 274                                  unsigned dstx, unsigned dsty,
 275                                  unsigned width, unsigned height)
 276 {
 277    struct i915_texture *tex = i915_texture(dst->texture);
 278    struct pipe_resource *pt = &tex->b.b;
 279    unsigned packedds;
 280    unsigned mask = 0;
 281    unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
 282
 283    assert(util_format_get_blockwidth(pt->format) == 1);
 284    assert(util_format_get_blockheight(pt->format) == 1);
 285
 286    packedds = util_pack_z_stencil(dst->format, depth, stencil);
 287
 288    if (clear_flags & PIPE_CLEAR_DEPTH)
 289       mask |= XY_COLOR_BLT_WRITE_RGB;
 290    /* XXX presumably this does read-modify-write
 291       (otherwise this won't work anyway). Hence will only want to
 292       do it if really have stencil and it isn't cleared */
 293    if ((clear_flags & PIPE_CLEAR_STENCIL) ||
 294        (dst->format != PIPE_FORMAT_Z24_UNORM_S8_UINT))
 295       mask |= XY_COLOR_BLT_WRITE_ALPHA;
 296
 297    i915_fill_blit( i915_context(pipe),
 298                    util_format_get_blocksize(pt->format),
 299                    mask,
 300                    (unsigned short) tex->stride,
 301                    tex->buffer, offset,
 302                    (short) dstx, (short) dsty,
 303                    (short) width, (short) height,
 304                    packedds );
 305 }
 306
 307 /*
 308  * Screen surface functions
 309  */
 310
 311
 312 static struct pipe_surface *
 313 i915_create_surface(struct pipe_context *ctx,
 314                     struct pipe_resource *pt,
 315                     const struct pipe_surface *surf_tmpl)
 316 {
 317    struct pipe_surface *ps;
 318
 319    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 320    if (pt->target != PIPE_TEXTURE_CUBE &&
 321        pt->target != PIPE_TEXTURE_3D)
 322       assert(surf_tmpl->u.tex.first_layer == 0);
 323
 324    ps = CALLOC_STRUCT(pipe_surface);
 325    if (ps) {
 326       /* could subclass pipe_surface and store offset as it used to do */
 327       pipe_reference_init(&ps->reference, 1);
 328       pipe_resource_reference(&ps->texture, pt);
 329       ps->format = surf_tmpl->format;
 330       ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 331       ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 332       ps->u.tex.level = surf_tmpl->u.tex.level;
 333       ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 334       ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 335       ps->context = ctx;
 336    }
 337    return ps;
 338 }
 339
 340 static void
 341 i915_surface_destroy(struct pipe_context *ctx,
 342                      struct pipe_surface *surf)
 343 {
 344    pipe_resource_reference(&surf->texture, NULL);
 345    FREE(surf);
 346 }
 347
 348
 349 void
 350 i915_init_surface_functions(struct i915_context *i915)
 351 {
 352    if (i915_screen(i915->base.screen)->debug.use_blitter) {
 353       i915->base.resource_copy_region = i915_surface_copy_blitter;
 354       i915->base.clear_render_target = i915_clear_render_target_blitter;
 355       i915->base.clear_depth_stencil = i915_clear_depth_stencil_blitter;
 356    } else {
 357       i915->base.resource_copy_region = i915_surface_copy_render;
 358       i915->base.clear_render_target = i915_clear_render_target_render;
 359       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
 360    }
 361    i915->base.blit = i915_blit;
 362    i915->base.create_surface = i915_create_surface;
 363    i915->base.surface_destroy = i915_surface_destroy;
 364 }