src/gallium/drivers/nv20/nv20_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4 #include "util/u_math.h"
   5
   6 #include "nv20_context.h"
   7 #include "nv20_screen.h"
   8
   9 static void
  10 nv20_miptree_layout(struct nv20_miptree *nv20mt)
  11 {
  12         struct pipe_texture *pt = &nv20mt->base;
  13         uint width = pt->width0;
  14         uint offset = 0;
  15         int nr_faces, l, f;
  16         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  17                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  18                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  19                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  20                                            PIPE_TEXTURE_USAGE_PRIMARY);
  21
  22         if (pt->target == PIPE_TEXTURE_CUBE) {
  23                 nr_faces = 6;
  24         } else {
  25                 nr_faces = 1;
  26         }
  27
  28         for (l = 0; l <= pt->last_level; l++) {
  29                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  30                         nv20mt->level[l].pitch = align(pf_get_stride(pt->format, pt->width0), 64);
  31                 else
  32                         nv20mt->level[l].pitch = pf_get_stride(pt->format, width);
  33
  34                 nv20mt->level[l].image_offset =
  35                         CALLOC(nr_faces, sizeof(unsigned));
  36
  37                 width  = u_minify(width, 1);
  38         }
  39
  40         for (f = 0; f < nr_faces; f++) {
  41                 for (l = 0; l < pt->last_level; l++) {
  42                         nv20mt->level[l].image_offset[f] = offset;
  43
  44                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  45                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  46                                 offset += align(nv20mt->level[l].pitch * u_minify(pt->height0, l), 64);
  47                         else
  48                                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  49                 }
  50
  51                 nv20mt->level[l].image_offset[f] = offset;
  52                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  53         }
  54
  55         nv20mt->total_size = offset;
  56 }
  57
  58 static struct pipe_texture *
  59 nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  60                      const unsigned *stride, struct pipe_buffer *pb)
  61 {
  62         struct nv20_miptree *mt;
  63
  64         /* Only supports 2D, non-mipmapped textures for the moment */
  65         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  66             pt->depth0 != 1)
  67                 return NULL;
  68
  69         mt = CALLOC_STRUCT(nv20_miptree);
  70         if (!mt)
  71                 return NULL;
  72
  73         mt->base = *pt;
  74         pipe_reference_init(&mt->base.reference, 1);
  75         mt->base.screen = pscreen;
  76         mt->level[0].pitch = stride[0];
  77         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  78
  79         pipe_buffer_reference(&mt->buffer, pb);
  80         return &mt->base;
  81 }
  82
  83 static struct pipe_texture *
  84 nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  85 {
  86         struct nv20_miptree *mt;
  87         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  88                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  89
  90         mt = MALLOC(sizeof(struct nv20_miptree));
  91         if (!mt)
  92                 return NULL;
  93         mt->base = *pt;
  94         pipe_reference_init(&mt->base.reference, 1);
  95         mt->base.screen = screen;
  96
  97         /* Swizzled textures must be POT */
  98         if (pt->width0 & (pt->width0 - 1) ||
  99             pt->height0 & (pt->height0 - 1))
 100                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 101         else
 102         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
 103                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 104                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
 105                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 106         else
 107         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 108                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 109         else {
 110                 switch (pt->format) {
 111                 /* TODO: Figure out which formats can be swizzled */
 112                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 113                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 114                 case PIPE_FORMAT_R16_SNORM:
 115                 {
 116                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 117                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 118                         break;
 119                 }
 120                 default:
 121                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 122                 }
 123         }
 124
 125         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 126                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 127
 128         nv20_miptree_layout(mt);
 129
 130         mt->buffer = screen->buffer_create(screen, 256, buf_usage, mt->total_size);
 131         if (!mt->buffer) {
 132                 FREE(mt);
 133                 return NULL;
 134         }
 135
 136         return &mt->base;
 137 }
 138
 139 static void
 140 nv20_miptree_destroy(struct pipe_texture *pt)
 141 {
 142         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 143         int l;
 144
 145         pipe_buffer_reference(&nv20mt->buffer, NULL);
 146         for (l = 0; l <= pt->last_level; l++) {
 147                 if (nv20mt->level[l].image_offset)
 148                         FREE(nv20mt->level[l].image_offset);
 149         }
 150 }
 151
 152 static struct pipe_surface *
 153 nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 154                          unsigned face, unsigned level, unsigned zslice,
 155                          unsigned flags)
 156 {
 157         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 158         struct nv04_surface *ns;
 159
 160         ns = CALLOC_STRUCT(nv04_surface);
 161         if (!ns)
 162                 return NULL;
 163         pipe_texture_reference(&ns->base.texture, pt);
 164         ns->base.format = pt->format;
 165         ns->base.width = u_minify(pt->width0, level);
 166         ns->base.height = u_minify(pt->height0, level);
 167         ns->base.usage = flags;
 168         pipe_reference_init(&ns->base.reference, 1);
 169         ns->base.face = face;
 170         ns->base.level = level;
 171         ns->base.zslice = zslice;
 172         ns->pitch = nv20mt->level[level].pitch;
 173
 174         if (pt->target == PIPE_TEXTURE_CUBE) {
 175                 ns->base.offset = nv20mt->level[level].image_offset[face];
 176         } else
 177         if (pt->target == PIPE_TEXTURE_3D) {
 178                 ns->base.offset = nv20mt->level[level].image_offset[zslice];
 179         } else {
 180                 ns->base.offset = nv20mt->level[level].image_offset[0];
 181         }
 182
 183         return &ns->base;
 184 }
 185
 186 static void
 187 nv20_miptree_surface_destroy(struct pipe_surface *ps)
 188 {
 189         pipe_texture_reference(&ps->texture, NULL);
 190         FREE(ps);
 191 }
 192
 193 void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
 194 {
 195         pscreen->texture_create = nv20_miptree_create;
 196         pscreen->texture_blanket = nv20_miptree_blanket;
 197         pscreen->texture_destroy = nv20_miptree_destroy;
 198         pscreen->get_tex_surface = nv20_miptree_surface_get;
 199         pscreen->tex_surface_destroy = nv20_miptree_surface_destroy;
 200 }
 201