From ca349e02171058c47fea610b2d884e4b08b371ac Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Tue, 14 May 2013 18:47:03 +0800 Subject: [PATCH] ilo: simplify ilo_texture_get_slice_offset() Always return a tile-aligned offset. Also fix for W tiling. --- src/gallium/drivers/ilo/ilo_gpe_gen6.c | 4 +- src/gallium/drivers/ilo/ilo_gpe_gen7.c | 2 +- src/gallium/drivers/ilo/ilo_resource.c | 87 ++++++++++++++-------------------- src/gallium/drivers/ilo/ilo_resource.h | 2 +- 4 files changed, 40 insertions(+), 55 deletions(-) diff --git a/src/gallium/drivers/ilo/ilo_gpe_gen6.c b/src/gallium/drivers/ilo/ilo_gpe_gen6.c index 42a89f5..1177b06 100644 --- a/src/gallium/drivers/ilo/ilo_gpe_gen6.c +++ b/src/gallium/drivers/ilo/ilo_gpe_gen6.c @@ -2348,7 +2348,7 @@ ilo_gpe_gen6_emit_3DSTATE_DEPTH_BUFFER(const struct ilo_dev_info *dev, */ slice_offset = ilo_texture_get_slice_offset(tex, surface->u.tex.level, surface->u.tex.first_layer, - true, &x_offset, &y_offset); + &x_offset, &y_offset); /* * From the Sandy Bridge PRM, volume 2 part 1, page 326: @@ -3750,7 +3750,7 @@ gen6_fill_normal_SURFACE_STATE(const struct ilo_dev_info *dev, assert(num_levels == 1 && num_layers == 1); layer_offset = ilo_texture_get_slice_offset(tex, - first_level, first_layer, true, &x_offset, &y_offset); + first_level, first_layer, &x_offset, &y_offset); assert(x_offset % 4 == 0); assert(y_offset % 2 == 0); diff --git a/src/gallium/drivers/ilo/ilo_gpe_gen7.c b/src/gallium/drivers/ilo/ilo_gpe_gen7.c index ba69906..03236ec 100644 --- a/src/gallium/drivers/ilo/ilo_gpe_gen7.c +++ b/src/gallium/drivers/ilo/ilo_gpe_gen7.c @@ -1496,7 +1496,7 @@ gen7_fill_normal_SURFACE_STATE(const struct ilo_dev_info *dev, assert(num_levels == 1 && num_layers == 1); layer_offset = ilo_texture_get_slice_offset(tex, - first_level, first_layer, true, &x_offset, &y_offset); + first_level, first_layer, &x_offset, &y_offset); assert(x_offset % 4 == 0); assert(y_offset % 2 == 0); diff --git a/src/gallium/drivers/ilo/ilo_resource.c b/src/gallium/drivers/ilo/ilo_resource.c index b41ff5b..eb0d253 100644 --- a/src/gallium/drivers/ilo/ilo_resource.c +++ b/src/gallium/drivers/ilo/ilo_resource.c @@ -1208,27 +1208,32 @@ ilo_texture_alloc_bo(struct ilo_texture *tex) /** * Return the offset (in bytes) to a slice within the bo. * - * When tile_aligned is true, the offset is to the tile containing the start - * address of the slice. x_offset and y_offset are offsets (in pixels) from - * the tile start to slice start. x_offset is always a multiple of 4 and - * y_offset is always a multiple of 2. + * The returned offset is aligned to tile size. Since slices are not + * guaranteed to start at tile boundaries, the X and Y offsets (in pixels) + * from the tile origin to the slice are also returned. X offset is always a + * multiple of 4 and Y offset is always a multiple of 2. */ unsigned ilo_texture_get_slice_offset(const struct ilo_texture *tex, - int level, int slice, bool tile_aligned, + int level, int slice, unsigned *x_offset, unsigned *y_offset) { - const unsigned x = tex->slice_offsets[level][slice].x / tex->block_width; - const unsigned y = tex->slice_offsets[level][slice].y / tex->block_height; unsigned tile_w, tile_h, tile_size, row_size; - unsigned slice_offset; + unsigned x, y, slice_offset; /* see the Sandy Bridge PRM, volume 1 part 2, page 24 */ switch (tex->tiling) { case INTEL_TILING_NONE: - tile_w = tex->bo_cpp; - tile_h = 1; + /* W-tiled */ + if (tex->bo_format == PIPE_FORMAT_S8_UINT) { + tile_w = 64; + tile_h = 64; + } + else { + tile_w = 1; + tile_h = 1; + } break; case INTEL_TILING_X: tile_w = 512; @@ -1240,7 +1245,7 @@ ilo_texture_get_slice_offset(const struct ilo_texture *tex, break; default: assert(!"unknown tiling"); - tile_w = tex->bo_cpp; + tile_w = 1; tile_h = 1; break; } @@ -1248,13 +1253,10 @@ ilo_texture_get_slice_offset(const struct ilo_texture *tex, tile_size = tile_w * tile_h; row_size = tex->bo_stride * tile_h; - /* - * for non-tiled resources, this is equivalent to - * - * slice_offset = y * tex->bo_stride + x * tex->bo_cpp; - */ - slice_offset = - row_size * (y / tile_h) + tile_size * (x * tex->bo_cpp / tile_w); + /* in bytes */ + x = tex->slice_offsets[level][slice].x / tex->block_width * tex->bo_cpp; + y = tex->slice_offsets[level][slice].y / tex->block_height; + slice_offset = row_size * (y / tile_h) + tile_size * (x / tile_w); /* * Since tex->bo_stride is a multiple of tile_w, slice_offset should be @@ -1262,42 +1264,25 @@ ilo_texture_get_slice_offset(const struct ilo_texture *tex, */ assert(slice_offset % tile_size == 0); - if (tile_aligned) { - /* - * because of the possible values of align_i and align_j in - * layout_tex_init(), x_offset must be a multiple of 4 and y_offset must - * be a multiple of 2. - */ - if (x_offset) { - assert(tile_w % tex->bo_cpp == 0); - *x_offset = (x % (tile_w / tex->bo_cpp)) * tex->block_width; - assert(*x_offset % 4 == 0); - } - if (y_offset) { - *y_offset = (y % tile_h) * tex->block_height; - assert(*y_offset % 2 == 0); - } + /* + * because of the possible values of align_i and align_j in + * tex_layout_init_alignments(), x_offset is guaranteed to be a multiple of + * 4 and y_offset is guaranteed to be a multiple of 2. + */ + if (x_offset) { + /* in pixels */ + x = (x % tile_w) / tex->bo_cpp * tex->block_width; + assert(x % 4 == 0); + + *x_offset = x; } - else { - const unsigned tx = (x * tex->bo_cpp) % tile_w; - const unsigned ty = y % tile_h; - switch (tex->tiling) { - case INTEL_TILING_NONE: - assert(tx == 0 && ty == 0); - break; - case INTEL_TILING_X: - slice_offset += tile_w * ty + tx; - break; - case INTEL_TILING_Y: - slice_offset += tile_h * 16 * (tx / 16) + ty * 16 + (tx % 16); - break; - } + if (y_offset) { + /* in pixels */ + y = (y % tile_h) * tex->block_height; + assert(y % 2 == 0); - if (x_offset) - *x_offset = 0; - if (y_offset) - *y_offset = 0; + *y_offset = y; } return slice_offset; diff --git a/src/gallium/drivers/ilo/ilo_resource.h b/src/gallium/drivers/ilo/ilo_resource.h index 124603c..e22bd7c 100644 --- a/src/gallium/drivers/ilo/ilo_resource.h +++ b/src/gallium/drivers/ilo/ilo_resource.h @@ -105,7 +105,7 @@ ilo_texture_alloc_bo(struct ilo_texture *tex); unsigned ilo_texture_get_slice_offset(const struct ilo_texture *tex, - int level, int slice, bool tile_aligned, + int level, int slice, unsigned *x_offset, unsigned *y_offset); #endif /* ILO_RESOURCE_H */ -- 2.7.4