diff options
Diffstat (limited to 'src/gallium/drivers/nv20/nv20_miptree.c')
| -rw-r--r-- | src/gallium/drivers/nv20/nv20_miptree.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv20/nv20_miptree.c b/src/gallium/drivers/nv20/nv20_miptree.c new file mode 100644 index 00000000000..c6106d58c43 --- /dev/null +++ b/src/gallium/drivers/nv20/nv20_miptree.c @@ -0,0 +1,156 @@ +#include "pipe/p_state.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" + +#include "nv20_context.h" +#include "nv20_screen.h" + +static void +nv20_miptree_layout(struct nv20_miptree *nv20mt) +{ + struct pipe_texture *pt = &nv20mt->base; + boolean swizzled = FALSE; + uint width = pt->width[0], height = pt->height[0]; + uint offset = 0; + int nr_faces, l, f; + + if (pt->target == PIPE_TEXTURE_CUBE) { + nr_faces = 6; + } else { + nr_faces = 1; + } + + for (l = 0; l <= pt->last_level; l++) { + pt->width[l] = width; + pt->height[l] = height; + pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width); + pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height); + + if (swizzled) + nv20mt->level[l].pitch = pt->nblocksx[l] * pt->block.size; + else + nv20mt->level[l].pitch = pt->nblocksx[0] * pt->block.size; + nv20mt->level[l].pitch = (nv20mt->level[l].pitch + 63) & ~63; + + nv20mt->level[l].image_offset = + CALLOC(nr_faces, sizeof(unsigned)); + + width = MAX2(1, width >> 1); + height = MAX2(1, height >> 1); + + } + + for (f = 0; f < nr_faces; f++) { + for (l = 0; l <= pt->last_level; l++) { + nv20mt->level[l].image_offset[f] = offset; + offset += nv20mt->level[l].pitch * pt->height[l]; + } + } + + nv20mt->total_size = offset; +} + +static struct pipe_texture * +nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt) +{ + struct pipe_winsys *ws = screen->winsys; + struct nv20_miptree *mt; + + mt = MALLOC(sizeof(struct nv20_miptree)); + if (!mt) + return NULL; + mt->base = *pt; + mt->base.refcount = 1; + mt->base.screen = screen; + + nv20_miptree_layout(mt); + + mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL, + mt->total_size); + if (!mt->buffer) { + FREE(mt); + return NULL; + } + + return &mt->base; +} + +static void +nv20_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt) +{ + struct pipe_texture *mt = *pt; + + *pt = NULL; + if (--mt->refcount <= 0) { + struct nv20_miptree *nv20mt = (struct nv20_miptree *)mt; + int l; + + pipe_buffer_reference(screen, &nv20mt->buffer, NULL); + for (l = 0; l <= mt->last_level; l++) { + if (nv20mt->level[l].image_offset) + FREE(nv20mt->level[l].image_offset); + } + FREE(nv20mt); + } +} + +static struct pipe_surface * +nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt, + unsigned face, unsigned level, unsigned zslice, + unsigned flags) +{ + struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt; + struct pipe_surface *ps; + + ps = CALLOC_STRUCT(pipe_surface); + if (!ps) + return NULL; + pipe_texture_reference(&ps->texture, pt); + pipe_buffer_reference(screen, &ps->buffer, nv20mt->buffer); + ps->format = pt->format; + ps->width = pt->width[level]; + ps->height = pt->height[level]; + ps->block = pt->block; + ps->nblocksx = pt->nblocksx[level]; + ps->nblocksy = pt->nblocksy[level]; + ps->stride = nv20mt->level[level].pitch; + ps->usage = flags; + ps->status = PIPE_SURFACE_STATUS_DEFINED; + ps->refcount = 1; + ps->winsys = screen->winsys; + + if (pt->target == PIPE_TEXTURE_CUBE) { + ps->offset = nv20mt->level[level].image_offset[face]; + } else + if (pt->target == PIPE_TEXTURE_3D) { + ps->offset = nv20mt->level[level].image_offset[zslice]; + } else { + ps->offset = nv20mt->level[level].image_offset[0]; + } + + return ps; +} + +static void +nv20_miptree_surface_release(struct pipe_screen *pscreen, + struct pipe_surface **psurface) +{ + struct pipe_surface *ps = *psurface; + + *psurface = NULL; + if (--ps->refcount > 0) + return; + + pipe_texture_reference(&ps->texture, NULL); + pipe_buffer_reference(pscreen, &ps->buffer, NULL); + FREE(ps); +} + +void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen) +{ + pscreen->texture_create = nv20_miptree_create; + pscreen->texture_release = nv20_miptree_release; + pscreen->get_tex_surface = nv20_miptree_surface_get; + pscreen->tex_surface_release = nv20_miptree_surface_release; +} + |