src/gallium/drivers/nv30/nv30_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4 #include "util/u_format.h"
   5 #include "util/u_math.h"
   6
   7 #include "nv30_context.h"
   8 #include "../nv04/nv04_surface_2d.h"
   9
  10 static void
  11 nv30_miptree_layout(struct nv30_miptree *nv30mt)
  12 {
  13         struct pipe_texture *pt = &nv30mt->base;
  14         uint width = pt->width0;
  15         uint offset = 0;
  16         int nr_faces, l, f;
  17         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  18                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  19                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  20                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  21                                            PIPE_TEXTURE_USAGE_PRIMARY);
  22
  23         if (pt->target == PIPE_TEXTURE_CUBE) {
  24                 nr_faces = 6;
  25         } else
  26         if (pt->target == PIPE_TEXTURE_3D) {
  27                 nr_faces = pt->depth0;
  28         } else {
  29                 nr_faces = 1;
  30         }
  31
  32         for (l = 0; l <= pt->last_level; l++) {
  33                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  34                         nv30mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
  35                 else
  36                         nv30mt->level[l].pitch = util_format_get_stride(pt->format, width);
  37
  38                 nv30mt->level[l].image_offset =
  39                         CALLOC(nr_faces, sizeof(unsigned));
  40
  41                 width  = u_minify(width, 1);
  42         }
  43
  44         for (f = 0; f < nr_faces; f++) {
  45                 for (l = 0; l < pt->last_level; l++) {
  46                         nv30mt->level[l].image_offset[f] = offset;
  47
  48                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  49                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  50                                 offset += align(nv30mt->level[l].pitch * u_minify(pt->height0, l), 64);
  51                         else
  52                                 offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
  53                 }
  54
  55                 nv30mt->level[l].image_offset[f] = offset;
  56                 offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
  57         }
  58
  59         nv30mt->total_size = offset;
  60 }
  61
  62 static struct pipe_texture *
  63 nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  64 {
  65         struct nv30_miptree *mt;
  66         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  67                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  68
  69         mt = MALLOC(sizeof(struct nv30_miptree));
  70         if (!mt)
  71                 return NULL;
  72         mt->base = *pt;
  73         pipe_reference_init(&mt->base.reference, 1);
  74         mt->base.screen = pscreen;
  75
  76         /* Swizzled textures must be POT */
  77         if (pt->width0 & (pt->width0 - 1) ||
  78             pt->height0 & (pt->height0 - 1))
  79                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  80         else
  81         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  82                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  83                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  84                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  85         else
  86         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  87                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  88         else {
  89                 switch (pt->format) {
  90                 /* TODO: Figure out which formats can be swizzled */
  91                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  92                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  93                 case PIPE_FORMAT_R16_SNORM:
  94                 case PIPE_FORMAT_R5G6B5_UNORM:
  95                 case PIPE_FORMAT_A8L8_UNORM:
  96                 case PIPE_FORMAT_A8_UNORM:
  97                 case PIPE_FORMAT_L8_UNORM:
  98                 case PIPE_FORMAT_I8_UNORM:
  99                 {
 100                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 101                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 102                         break;
 103                 }
 104                 default:
 105                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 106                 }
 107         }
 108
 109         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 110                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 111
 112         /* apparently we can't render to swizzled surfaces smaller than 64 bytes, so make them linear.
 113          * If the user did not ask for a render target, they can still render to it, but it will cost them an extra copy.
 114          * This also happens for small mipmaps of large textures. */
 115         if (pt->tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET && util_format_get_stride(pt->format, pt->width0) < 64)
 116                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 117
 118         nv30_miptree_layout(mt);
 119
 120         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage,
 121                                        mt->total_size);
 122         if (!mt->buffer) {
 123                 FREE(mt);
 124                 return NULL;
 125         }
 126         mt->bo = nouveau_bo(mt->buffer);
 127
 128         return &mt->base;
 129 }
 130
 131 static struct pipe_texture *
 132 nv30_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 133                      const unsigned *stride, struct pipe_buffer *pb)
 134 {
 135         struct nv30_miptree *mt;
 136
 137         /* Only supports 2D, non-mipmapped textures for the moment */
 138         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 139             pt->depth0 != 1)
 140                 return NULL;
 141
 142         mt = CALLOC_STRUCT(nv30_miptree);
 143         if (!mt)
 144                 return NULL;
 145
 146         mt->base = *pt;
 147         pipe_reference_init(&mt->base.reference, 1);
 148         mt->base.screen = pscreen;
 149         mt->level[0].pitch = stride[0];
 150         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 151
 152         /* Assume whoever created this buffer expects it to be linear for now */
 153         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 154
 155         pipe_buffer_reference(&mt->buffer, pb);
 156         mt->bo = nouveau_bo(mt->buffer);
 157         return &mt->base;
 158 }
 159
 160 static void
 161 nv30_miptree_destroy(struct pipe_texture *pt)
 162 {
 163         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 164         int l;
 165
 166         pipe_buffer_reference(&mt->buffer, NULL);
 167         for (l = 0; l <= pt->last_level; l++) {
 168                 if (mt->level[l].image_offset)
 169                         FREE(mt->level[l].image_offset);
 170         }
 171
 172         FREE(mt);
 173 }
 174
 175 static struct pipe_surface *
 176 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 177                          unsigned face, unsigned level, unsigned zslice,
 178                          unsigned flags)
 179 {
 180         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 181         struct nv04_surface *ns;
 182
 183         ns = CALLOC_STRUCT(nv04_surface);
 184         if (!ns)
 185                 return NULL;
 186         pipe_texture_reference(&ns->base.texture, pt);
 187         ns->base.format = pt->format;
 188         ns->base.width = u_minify(pt->width0, level);
 189         ns->base.height = u_minify(pt->height0, level);
 190         ns->base.usage = flags;
 191         pipe_reference_init(&ns->base.reference, 1);
 192         ns->base.face = face;
 193         ns->base.level = level;
 194         ns->base.zslice = zslice;
 195         ns->pitch = nv30mt->level[level].pitch;
 196
 197         if (pt->target == PIPE_TEXTURE_CUBE) {
 198                 ns->base.offset = nv30mt->level[level].image_offset[face];
 199         } else
 200         if (pt->target == PIPE_TEXTURE_3D) {
 201                 ns->base.offset = nv30mt->level[level].image_offset[zslice];
 202         } else {
 203                 ns->base.offset = nv30mt->level[level].image_offset[0];
 204         }
 205
 206         /* create a linear temporary that we can render into if necessary.
 207          * Note that ns->pitch is always a multiple of 64 for linear surfaces and swizzled surfaces are POT, so
 208          * ns->pitch & 63 is equivalent to (ns->pitch < 64 && swizzled)*/
 209         if((ns->pitch & 63) && (ns->base.usage & (PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER)) == PIPE_BUFFER_USAGE_GPU_WRITE)
 210                 return &nv04_surface_wrap_for_render(pscreen, ((struct nv30_screen*)pscreen)->eng2d, ns)->base;
 211
 212         return &ns->base;
 213 }
 214
 215 static void
 216 nv30_miptree_surface_del(struct pipe_surface *ps)
 217 {
 218         struct nv04_surface* ns = (struct nv04_surface*)ps;
 219         if(ns->backing)
 220         {
 221                 struct nv30_screen* screen = (struct nv30_screen*)ps->texture->screen;
 222                 if(ns->backing->base.usage & PIPE_BUFFER_USAGE_GPU_WRITE)
 223                         screen->eng2d->copy(screen->eng2d, &ns->backing->base, 0, 0, ps, 0, 0, ns->base.width, ns->base.height);
 224                 nv30_miptree_surface_del(&ns->backing->base);
 225         }
 226
 227         pipe_texture_reference(&ps->texture, NULL);
 228         FREE(ps);
 229 }
 230
 231 void
 232 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 233 {
 234         pscreen->texture_create = nv30_miptree_create;
 235         pscreen->texture_blanket = nv30_miptree_blanket;
 236         pscreen->texture_destroy = nv30_miptree_destroy;
 237         pscreen->get_tex_surface = nv30_miptree_surface_new;
 238         pscreen->tex_surface_destroy = nv30_miptree_surface_del;
 239 }