src/gallium/drivers/nvfx/nvfx_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "util/u_inlines.h"
   4 #include "util/u_format.h"
   5 #include "util/u_math.h"
   6
   7 #include "nvfx_context.h"
   8 #include "nv04_surface_2d.h"
   9
  10
  11
  12 static void
  13 nvfx_miptree_layout(struct nvfx_miptree *mt)
  14 {
  15         struct pipe_texture *pt = &mt->base;
  16         uint width = pt->width0;
  17         uint offset = 0;
  18         int nr_faces, l, f;
  19         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  20                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  21                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  22                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  23                                            PIPE_TEXTURE_USAGE_SCANOUT);
  24
  25         if (pt->target == PIPE_TEXTURE_CUBE) {
  26                 nr_faces = 6;
  27         } else
  28         if (pt->target == PIPE_TEXTURE_3D) {
  29                 nr_faces = pt->depth0;
  30         } else {
  31                 nr_faces = 1;
  32         }
  33
  34         for (l = 0; l <= pt->last_level; l++) {
  35                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  36                         mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
  37                 else
  38                         mt->level[l].pitch = util_format_get_stride(pt->format, width);
  39
  40                 mt->level[l].image_offset =
  41                         CALLOC(nr_faces, sizeof(unsigned));
  42
  43                 width  = u_minify(width, 1);
  44         }
  45
  46         for (f = 0; f < nr_faces; f++) {
  47                 for (l = 0; l < pt->last_level; l++) {
  48                         mt->level[l].image_offset[f] = offset;
  49
  50                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  51                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  52                                 offset += align(mt->level[l].pitch * u_minify(pt->height0, l), 64);
  53                         else
  54                                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  55                 }
  56
  57                 mt->level[l].image_offset[f] = offset;
  58                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  59         }
  60
  61         mt->total_size = offset;
  62 }
  63
  64 static struct pipe_texture *
  65 nvfx_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  66 {
  67         struct nvfx_miptree *mt;
  68         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  69                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  70         static int no_swizzle = -1;
  71         if(no_swizzle < 0)
  72                 no_swizzle = debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE);
  73
  74         mt = MALLOC(sizeof(struct nvfx_miptree));
  75         if (!mt)
  76                 return NULL;
  77         mt->base = *pt;
  78         pipe_reference_init(&mt->base.reference, 1);
  79         mt->base.screen = pscreen;
  80
  81         /* Swizzled textures must be POT */
  82         if (pt->width0 & (pt->width0 - 1) ||
  83             pt->height0 & (pt->height0 - 1))
  84                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  85         else
  86         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_SCANOUT |
  87                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  88                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  89                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  90         else
  91         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  92                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  93         else {
  94                 switch (pt->format) {
  95                 case PIPE_FORMAT_B5G6R5_UNORM:
  96                 case PIPE_FORMAT_L8A8_UNORM:
  97                 case PIPE_FORMAT_A8_UNORM:
  98                 case PIPE_FORMAT_L8_UNORM:
  99                 case PIPE_FORMAT_I8_UNORM:
 100                         /* TODO: we can actually swizzle these formats on nv40, we
 101                                 are just preserving the pre-unification behavior.
 102                                 The whole 2D code is going to be rewritten anyway. */
 103                         if(nvfx_screen(pscreen)->is_nv4x) {
 104                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 105                                 break;
 106                         }
 107                 /* TODO: Figure out which formats can be swizzled */
 108                 case PIPE_FORMAT_B8G8R8A8_UNORM:
 109                 case PIPE_FORMAT_B8G8R8X8_UNORM:
 110                 case PIPE_FORMAT_R16_SNORM:
 111                 {
 112                         if (no_swizzle)
 113                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 114                         break;
 115                 }
 116                 default:
 117                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 118                 }
 119         }
 120
 121         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 122                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 123
 124         /* apparently we can't render to swizzled surfaces smaller than 64 bytes, so make them linear.
 125          * If the user did not ask for a render target, they can still render to it, but it will cost them an extra copy.
 126          * This also happens for small mipmaps of large textures. */
 127         if (pt->tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET && util_format_get_stride(pt->format, pt->width0) < 64)
 128                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 129
 130         nvfx_miptree_layout(mt);
 131
 132         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage, mt->total_size);
 133         if (!mt->buffer) {
 134                 FREE(mt);
 135                 return NULL;
 136         }
 137         mt->bo = nouveau_bo(mt->buffer);
 138         return &mt->base;
 139 }
 140
 141 static struct pipe_texture *
 142 nvfx_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 143                      const unsigned *stride, struct pipe_buffer *pb)
 144 {
 145         struct nvfx_miptree *mt;
 146
 147         /* Only supports 2D, non-mipmapped textures for the moment */
 148         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 149             pt->depth0 != 1)
 150                 return NULL;
 151
 152         mt = CALLOC_STRUCT(nvfx_miptree);
 153         if (!mt)
 154                 return NULL;
 155
 156         mt->base = *pt;
 157         pipe_reference_init(&mt->base.reference, 1);
 158         mt->base.screen = pscreen;
 159         mt->level[0].pitch = stride[0];
 160         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 161
 162         /* Assume whoever created this buffer expects it to be linear for now */
 163         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 164
 165         pipe_buffer_reference(&mt->buffer, pb);
 166         mt->bo = nouveau_bo(mt->buffer);
 167         return &mt->base;
 168 }
 169
 170 static void
 171 nvfx_miptree_destroy(struct pipe_texture *pt)
 172 {
 173         struct nvfx_miptree *mt = (struct nvfx_miptree *)pt;
 174         int l;
 175
 176         pipe_buffer_reference(&mt->buffer, NULL);
 177         for (l = 0; l <= pt->last_level; l++) {
 178                 if (mt->level[l].image_offset)
 179                         FREE(mt->level[l].image_offset);
 180         }
 181
 182         FREE(mt);
 183 }
 184
 185 static struct pipe_surface *
 186 nvfx_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 187                          unsigned face, unsigned level, unsigned zslice,
 188                          unsigned flags)
 189 {
 190         struct nvfx_miptree *mt = (struct nvfx_miptree *)pt;
 191         struct nv04_surface *ns;
 192
 193         ns = CALLOC_STRUCT(nv04_surface);
 194         if (!ns)
 195                 return NULL;
 196         pipe_texture_reference(&ns->base.texture, pt);
 197         ns->base.format = pt->format;
 198         ns->base.width = u_minify(pt->width0, level);
 199         ns->base.height = u_minify(pt->height0, level);
 200         ns->base.usage = flags;
 201         pipe_reference_init(&ns->base.reference, 1);
 202         ns->base.face = face;
 203         ns->base.level = level;
 204         ns->base.zslice = zslice;
 205         ns->pitch = mt->level[level].pitch;
 206
 207         if (pt->target == PIPE_TEXTURE_CUBE) {
 208                 ns->base.offset = mt->level[level].image_offset[face];
 209         } else
 210         if (pt->target == PIPE_TEXTURE_3D) {
 211                 ns->base.offset = mt->level[level].image_offset[zslice];
 212         } else {
 213                 ns->base.offset = mt->level[level].image_offset[0];
 214         }
 215
 216         /* create a linear temporary that we can render into if necessary.
 217          * Note that ns->pitch is always a multiple of 64 for linear surfaces and swizzled surfaces are POT, so
 218          * ns->pitch & 63 is equivalent to (ns->pitch < 64 && swizzled)*/
 219         if((ns->pitch & 63) && (ns->base.usage & (PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER)) == PIPE_BUFFER_USAGE_GPU_WRITE)
 220                 return &nv04_surface_wrap_for_render(pscreen, ((struct nvfx_screen*)pscreen)->eng2d, ns)->base;
 221
 222         return &ns->base;
 223 }
 224
 225 static void
 226 nvfx_miptree_surface_del(struct pipe_surface *ps)
 227 {
 228         struct nv04_surface* ns = (struct nv04_surface*)ps;
 229         if(ns->backing)
 230         {
 231                 struct nvfx_screen* screen = (struct nvfx_screen*)ps->texture->screen;
 232                 if(ns->backing->base.usage & PIPE_BUFFER_USAGE_GPU_WRITE)
 233                         screen->eng2d->copy(screen->eng2d, &ns->backing->base, 0, 0, ps, 0, 0, ns->base.width, ns->base.height);
 234                 nvfx_miptree_surface_del(&ns->backing->base);
 235         }
 236
 237         pipe_texture_reference(&ps->texture, NULL);
 238         FREE(ps);
 239 }
 240
 241 void
 242 nvfx_screen_init_miptree_functions(struct pipe_screen *pscreen)
 243 {
 244         pscreen->texture_create = nvfx_miptree_create;
 245         pscreen->texture_destroy = nvfx_miptree_destroy;
 246         pscreen->get_tex_surface = nvfx_miptree_surface_new;
 247         pscreen->tex_surface_destroy = nvfx_miptree_surface_del;
 248
 249         nouveau_screen(pscreen)->texture_blanket = nvfx_miptree_blanket;
 250 }