From 040e1d008f8f8258f1b0ee0fcdf4906e0979fb66 Mon Sep 17 00:00:00 2001 From: Christoph Bumiller Date: Tue, 3 Nov 2009 23:19:56 +0100 Subject: nv50: add 3d texture tiling and mip-mapping Mip-mapped 3D textures are not arrays of 2D layers with a mip-map layout like 2D textures, therefore we cannot use image_nr == depth for them. Making use of "volume tiling" modes now, the allowed modes are 0xZY where Z <= 5 and y <= 5. --- src/gallium/drivers/nv50/nv50_miptree.c | 63 +++++++++++++++++++++------------ 1 file changed, 41 insertions(+), 22 deletions(-) (limited to 'src/gallium/drivers/nv50/nv50_miptree.c') diff --git a/src/gallium/drivers/nv50/nv50_miptree.c b/src/gallium/drivers/nv50/nv50_miptree.c index 229a59cb74..9c20c5cc28 100644 --- a/src/gallium/drivers/nv50/nv50_miptree.c +++ b/src/gallium/drivers/nv50/nv50_miptree.c @@ -26,14 +26,33 @@ #include "nv50_context.h" +/* The restrictions in tile mode selection probably aren't necessary. */ static INLINE uint32_t -get_tile_mode(unsigned ny) +get_tile_mode(unsigned ny, unsigned d) { - if (ny > 32) return 4; - if (ny > 16) return 3; - if (ny > 8) return 2; - if (ny > 4) return 1; - return 0; + uint32_t tile_mode = 0x00; + + if (ny > 32) tile_mode = 0x04; /* height 64 tiles */ + else + if (ny > 16) tile_mode = 0x03; /* height 32 tiles */ + else + if (ny > 8) tile_mode = 0x02; /* height 16 tiles */ + else + if (ny > 4) tile_mode = 0x01; /* height 8 tiles */ + + if (d == 1) + return tile_mode; + else + if (tile_mode > 0x02) + tile_mode = 0x02; + + if (d > 16 && tile_mode < 0x02) + return tile_mode | 0x50; /* depth 32 tiles */ + if (d > 8) return tile_mode | 0x40; /* depth 16 tiles */ + if (d > 4) return tile_mode | 0x30; /* depth 8 tiles */ + if (d > 2) return tile_mode | 0x20; /* depth 4 tiles */ + + return tile_mode | 0x10; } static struct pipe_texture * @@ -43,7 +62,7 @@ nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp) struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree); struct pipe_texture *pt = &mt->base.base; unsigned width = tmp->width[0], height = tmp->height[0]; - unsigned depth = tmp->depth[0]; + unsigned depth = tmp->depth[0], image_alignment; uint32_t tile_flags; int ret, i, l; @@ -67,17 +86,8 @@ nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp) break; } - switch (pt->target) { - case PIPE_TEXTURE_3D: - mt->image_nr = pt->depth[0]; - break; - case PIPE_TEXTURE_CUBE: - mt->image_nr = 6; - break; - default: - mt->image_nr = 1; - break; - } + /* XXX: texture arrays */ + mt->image_nr = (pt->target == PIPE_TEXTURE_CUBE) ? 6 : 1; for (l = 0; l <= pt->last_level; l++) { struct nv50_miptree_level *lvl = &mt->level[l]; @@ -90,26 +100,35 @@ nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp) lvl->image_offset = CALLOC(mt->image_nr, sizeof(int)); lvl->pitch = align(pt->nblocksx[l] * pt->block.size, 64); - lvl->tile_mode = get_tile_mode(pt->nblocksy[l]); + lvl->tile_mode = get_tile_mode(pt->nblocksy[l], depth); width = MAX2(1, width >> 1); height = MAX2(1, height >> 1); depth = MAX2(1, depth >> 1); } + image_alignment = get_tile_height(mt->level[0].tile_mode) * 64; + image_alignment *= get_tile_depth(mt->level[0].tile_mode); + + /* NOTE the distinction between arrays of mip-mapped 2D textures and + * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip. + */ for (i = 0; i < mt->image_nr; i++) { for (l = 0; l <= pt->last_level; l++) { struct nv50_miptree_level *lvl = &mt->level[l]; int size; - unsigned tile_ny = 1 << (lvl->tile_mode + 2); + unsigned tile_h = get_tile_height(lvl->tile_mode); + unsigned tile_d = get_tile_depth(lvl->tile_mode); - size = align(pt->nblocksx[l] * pt->block.size, 64); - size *= align(pt->nblocksy[l], tile_ny); + size = lvl->pitch; + size *= align(pt->nblocksy[l], tile_h); + size *= align(pt->depth[l], tile_d); lvl->image_offset[i] = mt->total_size; mt->total_size += size; } + mt->total_size = align(mt->total_size, image_alignment); } ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size, -- cgit v1.2.3