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_format.h"
   5 #include "util/u_math.h"
   6
   7 #include "nv20_context.h"
   8 #include "nv20_screen.h"
   9 #include "../nv04/nv04_surface_2d.h"
  10
  11 static void
  12 nv20_miptree_layout(struct nv20_miptree *nv20mt)
  13 {
  14         struct pipe_texture *pt = &nv20mt->base;
  15         uint width = pt->width0;
  16         uint offset = 0;
  17         int nr_faces, l, f;
  18         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  19                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  20                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  21                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  22                                            PIPE_TEXTURE_USAGE_PRIMARY);
  23
  24         if (pt->target == PIPE_TEXTURE_CUBE) {
  25                 nr_faces = 6;
  26         } else {
  27                 nr_faces = 1;
  28         }
  29
  30         for (l = 0; l <= pt->last_level; l++) {
  31                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  32                         nv20mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
  33                 else
  34                         nv20mt->level[l].pitch = util_format_get_stride(pt->format, width);
  35
  36                 nv20mt->level[l].image_offset =
  37                         CALLOC(nr_faces, sizeof(unsigned));
  38
  39                 width  = u_minify(width, 1);
  40         }
  41
  42         for (f = 0; f < nr_faces; f++) {
  43                 for (l = 0; l < pt->last_level; l++) {
  44                         nv20mt->level[l].image_offset[f] = offset;
  45
  46                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  47                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  48                                 offset += align(nv20mt->level[l].pitch * u_minify(pt->height0, l), 64);
  49                         else
  50                                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  51                 }
  52
  53                 nv20mt->level[l].image_offset[f] = offset;
  54                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  55         }
  56
  57         nv20mt->total_size = offset;
  58 }
  59
  60 static struct pipe_texture *
  61 nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  62                      const unsigned *stride, struct pipe_buffer *pb)
  63 {
  64         struct nv20_miptree *mt;
  65
  66         /* Only supports 2D, non-mipmapped textures for the moment */
  67         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  68             pt->depth0 != 1)
  69                 return NULL;
  70
  71         mt = CALLOC_STRUCT(nv20_miptree);
  72         if (!mt)
  73                 return NULL;
  74
  75         mt->base = *pt;
  76         pipe_reference_init(&mt->base.reference, 1);
  77         mt->base.screen = pscreen;
  78         mt->level[0].pitch = stride[0];
  79         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  80
  81         pipe_buffer_reference(&mt->buffer, pb);
  82         mt->bo = nouveau_bo(mt->buffer);
  83         return &mt->base;
  84 }
  85
  86 static struct pipe_texture *
  87 nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  88 {
  89         struct nv20_miptree *mt;
  90         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  91                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  92
  93         mt = MALLOC(sizeof(struct nv20_miptree));
  94         if (!mt)
  95                 return NULL;
  96         mt->base = *pt;
  97         pipe_reference_init(&mt->base.reference, 1);
  98         mt->base.screen = screen;
  99
 100         /* Swizzled textures must be POT */
 101         if (pt->width0 & (pt->width0 - 1) ||
 102             pt->height0 & (pt->height0 - 1))
 103                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 104         else
 105         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
 106                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 107                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
 108                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 109         else
 110         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 111                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 112         else {
 113                 switch (pt->format) {
 114                 /* TODO: Figure out which formats can be swizzled */
 115                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 116                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 117                 case PIPE_FORMAT_R16_SNORM:
 118                 {
 119                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 120                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 121                         break;
 122                 }
 123                 default:
 124                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 125                 }
 126         }
 127
 128         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 129                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 130
 131         /* apparently we can't render to swizzled surfaces smaller than 64 bytes, so make them linear.
 132          * If the user did not ask for a render target, they can still render to it, but it will cost them an extra copy.
 133          * This also happens for small mipmaps of large textures. */
 134         if (pt->tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET && util_format_get_stride(pt->format, pt->width0) < 64)
 135                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 136
 137         nv20_miptree_layout(mt);
 138
 139         mt->buffer = screen->buffer_create(screen, 256, buf_usage, mt->total_size);
 140         if (!mt->buffer) {
 141                 FREE(mt);
 142                 return NULL;
 143         }
 144         mt->bo = nouveau_bo(mt->buffer);
 145
 146         return &mt->base;
 147 }
 148
 149 static void
 150 nv20_miptree_destroy(struct pipe_texture *pt)
 151 {
 152         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 153         int l;
 154
 155         pipe_buffer_reference(&nv20mt->buffer, NULL);
 156         for (l = 0; l <= pt->last_level; l++) {
 157                 if (nv20mt->level[l].image_offset)
 158                         FREE(nv20mt->level[l].image_offset);
 159         }
 160 }
 161
 162 static struct pipe_surface *
 163 nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 164                          unsigned face, unsigned level, unsigned zslice,
 165                          unsigned flags)
 166 {
 167         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 168         struct nv04_surface *ns;
 169
 170         ns = CALLOC_STRUCT(nv04_surface);
 171         if (!ns)
 172                 return NULL;
 173         pipe_texture_reference(&ns->base.texture, pt);
 174         ns->base.format = pt->format;
 175         ns->base.width = u_minify(pt->width0, level);
 176         ns->base.height = u_minify(pt->height0, level);
 177         ns->base.usage = flags;
 178         pipe_reference_init(&ns->base.reference, 1);
 179         ns->base.face = face;
 180         ns->base.level = level;
 181         ns->base.zslice = zslice;
 182         ns->pitch = nv20mt->level[level].pitch;
 183
 184         if (pt->target == PIPE_TEXTURE_CUBE) {
 185                 ns->base.offset = nv20mt->level[level].image_offset[face];
 186         } else
 187         if (pt->target == PIPE_TEXTURE_3D) {
 188                 ns->base.offset = nv20mt->level[level].image_offset[zslice];
 189         } else {
 190                 ns->base.offset = nv20mt->level[level].image_offset[0];
 191         }
 192
 193         /* create a linear temporary that we can render into if necessary.
 194          * Note that ns->pitch is always a multiple of 64 for linear surfaces and swizzled surfaces are POT, so
 195          * ns->pitch & 63 is equivalent to (ns->pitch < 64 && swizzled)*/
 196         if((ns->pitch & 63) && (ns->base.usage & (PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER)) == PIPE_BUFFER_USAGE_GPU_WRITE)
 197                 return &nv04_surface_wrap_for_render(screen, ((struct nv20_screen*)screen)->eng2d, ns)->base;
 198
 199         return &ns->base;
 200 }
 201
 202 static void
 203 nv20_miptree_surface_destroy(struct pipe_surface *ps)
 204 {
 205         struct nv04_surface* ns = (struct nv04_surface*)ps;
 206         if(ns->backing)
 207         {
 208                 struct nv20_screen* screen = (struct nv20_screen*)ps->texture->screen;
 209                 if(ns->backing->base.usage & PIPE_BUFFER_USAGE_GPU_WRITE)
 210                         screen->eng2d->copy(screen->eng2d, &ns->backing->base, 0, 0, ps, 0, 0, ns->base.width, ns->base.height);
 211                 nv20_miptree_surface_destroy(&ns->backing->base);
 212         }
 213
 214         pipe_texture_reference(&ps->texture, NULL);
 215         FREE(ps);
 216 }
 217
 218 void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
 219 {
 220         pscreen->texture_create = nv20_miptree_create;
 221         pscreen->texture_blanket = nv20_miptree_blanket;
 222         pscreen->texture_destroy = nv20_miptree_destroy;
 223         pscreen->get_tex_surface = nv20_miptree_surface_get;
 224         pscreen->tex_surface_destroy = nv20_miptree_surface_destroy;
 225 }
 226