diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/vc4/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_context.c | 6 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 6 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_resource.c | 137 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_resource.h | 20 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_screen.c | 2 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_screen.h | 2 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_simulator_validate.c | 143 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_tiling.c | 321 | ||||
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_tiling.h | 41 |
10 files changed, 626 insertions, 53 deletions
diff --git a/src/gallium/drivers/vc4/Makefile.sources b/src/gallium/drivers/vc4/Makefile.sources index 414a64ab472..68badc495b9 100644 --- a/src/gallium/drivers/vc4/Makefile.sources +++ b/src/gallium/drivers/vc4/Makefile.sources @@ -19,4 +19,5 @@ C_SOURCES := \ vc4_simulator_validate.c \ vc4_simulator_validate_shaders.c \ vc4_state.c \ + vc4_tiling.c \ $() diff --git a/src/gallium/drivers/vc4/vc4_context.c b/src/gallium/drivers/vc4/vc4_context.c index 5d698a84798..0a09d399261 100644 --- a/src/gallium/drivers/vc4/vc4_context.c +++ b/src/gallium/drivers/vc4/vc4_context.c @@ -64,7 +64,7 @@ vc4_setup_rcl(struct vc4_context *vc4) cl_reloc(vc4, &vc4->rcl, ctex->bo, csurf->offset); cl_u16(&vc4->rcl, width); cl_u16(&vc4->rcl, height); - cl_u16(&vc4->rcl, ((ctex->tiling << + cl_u16(&vc4->rcl, ((csurf->tiling << VC4_RENDER_CONFIG_MEMORY_FORMAT_SHIFT) | VC4_RENDER_CONFIG_FORMAT_RGBA8888 | VC4_RENDER_CONFIG_EARLY_Z_COVERAGE_DISABLE)); @@ -97,7 +97,7 @@ vc4_setup_rcl(struct vc4_context *vc4) cl_u8(&vc4->rcl, VC4_PACKET_LOAD_TILE_BUFFER_GENERAL); cl_u8(&vc4->rcl, VC4_LOADSTORE_TILE_BUFFER_COLOR | - (ctex->tiling << + (csurf->tiling << VC4_LOADSTORE_TILE_BUFFER_FORMAT_SHIFT)); cl_u8(&vc4->rcl, VC4_LOADSTORE_TILE_BUFFER_RGBA8888); @@ -295,7 +295,7 @@ vc4_context_create(struct pipe_screen *pscreen, void *priv) vc4->dirty = ~0; vc4->fd = screen->fd; - util_slab_create(&vc4->transfer_pool, sizeof(struct pipe_transfer), + util_slab_create(&vc4->transfer_pool, sizeof(struct vc4_transfer), 16, UTIL_SLAB_SINGLETHREADED); vc4->blitter = util_blitter_create(pctx); if (!vc4->blitter) diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index fb1a2fe47bf..eed0ee1543b 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -1438,7 +1438,8 @@ write_texture_p0(struct vc4_context *vc4, struct vc4_resource *rsc = vc4_resource(texture->texture); cl_reloc(vc4, &vc4->uniforms, rsc->bo, - rsc->slices[0].offset | texture->u.tex.last_level); + rsc->slices[0].offset | texture->u.tex.last_level | + ((rsc->vc4_format & 7) << 4)); } static void @@ -1447,6 +1448,7 @@ write_texture_p1(struct vc4_context *vc4, uint32_t unit) { struct pipe_sampler_view *texture = texstate->textures[unit]; + struct vc4_resource *rsc = vc4_resource(texture->texture); struct pipe_sampler_state *sampler = texstate->samplers[unit]; static const uint32_t mipfilter_map[] = { [PIPE_TEX_MIPFILTER_NEAREST] = 2, @@ -1459,7 +1461,7 @@ write_texture_p1(struct vc4_context *vc4, }; cl_u32(&vc4->uniforms, - (1 << 31) /* XXX: data type */| + ((rsc->vc4_format >> 4) << 31) | (texture->texture->height0 << 20) | (texture->texture->width0 << 8) | (imgfilter_map[sampler->mag_img_filter] << 7) | diff --git a/src/gallium/drivers/vc4/vc4_resource.c b/src/gallium/drivers/vc4/vc4_resource.c index c2978c0433a..fb46be3916b 100644 --- a/src/gallium/drivers/vc4/vc4_resource.c +++ b/src/gallium/drivers/vc4/vc4_resource.c @@ -31,12 +31,28 @@ #include "vc4_screen.h" #include "vc4_context.h" #include "vc4_resource.h" +#include "vc4_tiling.h" static void vc4_resource_transfer_unmap(struct pipe_context *pctx, struct pipe_transfer *ptrans) { struct vc4_context *vc4 = vc4_context(pctx); + struct vc4_transfer *trans = vc4_transfer(ptrans); + struct pipe_resource *prsc = ptrans->resource; + struct vc4_resource *rsc = vc4_resource(prsc); + struct vc4_resource_slice *slice = &rsc->slices[ptrans->level]; + + if (trans->map) { + if (ptrans->usage & PIPE_TRANSFER_WRITE) { + vc4_store_tiled_image(rsc->bo->map + slice->offset, + slice->stride, + trans->map, ptrans->stride, + slice->tiling, rsc->cpp, + &ptrans->box); + } + free(trans->map); + } pipe_resource_reference(&ptrans->resource, NULL); util_slab_free(&vc4->transfer_pool, ptrans); @@ -51,25 +67,30 @@ vc4_resource_transfer_map(struct pipe_context *pctx, { struct vc4_context *vc4 = vc4_context(pctx); struct vc4_resource *rsc = vc4_resource(prsc); + struct vc4_resource_slice *slice = &rsc->slices[level]; + struct vc4_transfer *trans; struct pipe_transfer *ptrans; enum pipe_format format = prsc->format; char *buf; vc4_flush_for_bo(pctx, rsc->bo); - ptrans = util_slab_alloc(&vc4->transfer_pool); - if (!ptrans) + trans = util_slab_alloc(&vc4->transfer_pool); + if (!trans) return NULL; + /* XXX: Handle DISCARD_WHOLE_RESOURCE, DONTBLOCK, UNSYNCHRONIZED, + * DISCARD_WHOLE_RESOURCE, PERSISTENT, COHERENT. + */ + /* util_slab_alloc() doesn't zero: */ - memset(ptrans, 0, sizeof(*ptrans)); + memset(trans, 0, sizeof(*trans)); + ptrans = &trans->base; pipe_resource_reference(&ptrans->resource, prsc); ptrans->level = level; ptrans->usage = usage; ptrans->box = *box; - ptrans->stride = rsc->slices[level].stride; - ptrans->layer_stride = ptrans->stride; /* Note that the current kernel implementation is synchronous, so no * need to do syncing stuff here yet. @@ -83,10 +104,52 @@ vc4_resource_transfer_map(struct pipe_context *pctx, *pptrans = ptrans; - return buf + rsc->slices[level].offset + - box->y / util_format_get_blockheight(format) * ptrans->stride + - box->x / util_format_get_blockwidth(format) * rsc->cpp + - box->z * rsc->slices[level].size0; + if (rsc->tiled) { + uint32_t utile_w = vc4_utile_width(rsc->cpp); + uint32_t utile_h = vc4_utile_height(rsc->cpp); + + /* No direct mappings of tiled, since we need to manually + * tile/untile. + */ + if (usage & PIPE_TRANSFER_MAP_DIRECTLY) + return NULL; + + /* We need to align the box to utile boundaries, since that's + * what load/store operate on. + */ + uint32_t box_start_x = ptrans->box.x & (utile_w - 1); + uint32_t box_start_y = ptrans->box.y & (utile_h - 1); + ptrans->box.width += box_start_x; + ptrans->box.x -= box_start_x; + ptrans->box.height += box_start_y; + ptrans->box.y -= box_start_y; + ptrans->box.width = align(ptrans->box.width, utile_w); + ptrans->box.height = align(ptrans->box.height, utile_h); + + ptrans->stride = ptrans->box.width * rsc->cpp; + ptrans->layer_stride = ptrans->stride; + + trans->map = malloc(ptrans->stride * ptrans->box.height); + if (usage & PIPE_TRANSFER_READ) { + vc4_load_tiled_image(trans->map, ptrans->stride, + buf + slice->offset, + slice->stride, + slice->tiling, rsc->cpp, + &ptrans->box); + } + return (trans->map + + box_start_x * rsc->cpp + + box_start_y * ptrans->stride); + } else { + ptrans->stride = slice->stride; + ptrans->layer_stride = ptrans->stride; + + return buf + slice->offset + + box->y / util_format_get_blockheight(format) * ptrans->stride + + box->x / util_format_get_blockwidth(format) * rsc->cpp + + box->z * slice->size0; + } + fail: vc4_resource_transfer_unmap(pctx, ptrans); @@ -130,14 +193,34 @@ vc4_setup_slices(struct vc4_resource *rsc) uint32_t height = prsc->height0; uint32_t depth = prsc->depth0; uint32_t offset = 0; + uint32_t utile_w = vc4_utile_width(rsc->cpp); + uint32_t utile_h = vc4_utile_height(rsc->cpp); for (int i = prsc->last_level; i >= 0; i--) { struct vc4_resource_slice *slice = &rsc->slices[i]; uint32_t level_width = u_minify(width, i); uint32_t level_height = u_minify(height, i); + if (rsc->tiled == VC4_TILING_FORMAT_LINEAR) { + slice->tiling = VC4_TILING_FORMAT_LINEAR; + level_width = align(level_width, 16); + } else { + if (vc4_size_is_lt(level_width, level_height, + rsc->cpp)) { + slice->tiling = VC4_TILING_FORMAT_LT; + level_width = align(level_width, utile_w); + level_height = align(level_height, utile_h); + } else { + slice->tiling = VC4_TILING_FORMAT_T; + level_width = align(level_width, + 4 * 2 * utile_w); + level_height = align(level_height, + 4 * 2 * utile_h); + } + } + slice->offset = offset; - slice->stride = align(level_width * rsc->cpp, 16); + slice->stride = level_width * rsc->cpp; slice->size0 = level_height * slice->stride; /* Note, since we have cubes but no 3D, depth is invariant @@ -180,6 +263,17 @@ vc4_resource_setup(struct pipe_screen *pscreen, return rsc; } +static enum vc4_texture_data_type +get_resource_texture_format(struct pipe_resource *prsc) +{ + struct vc4_resource *rsc = vc4_resource(prsc); + + if (rsc->tiled) + return VC4_TEXTURE_TYPE_RGBA8888; + else + return VC4_TEXTURE_TYPE_RGBA32R; +} + static struct pipe_resource * vc4_resource_create(struct pipe_screen *pscreen, const struct pipe_resource *tmpl) @@ -187,9 +281,21 @@ vc4_resource_create(struct pipe_screen *pscreen, struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl); struct pipe_resource *prsc = &rsc->base.b; + /* We have to make shared be untiled, since we don't have any way to + * communicate metadata about tiling currently. + */ + if (tmpl->target == PIPE_BUFFER || + (tmpl->bind & (PIPE_BIND_SCANOUT | + PIPE_BIND_LINEAR | + PIPE_BIND_SHARED | + PIPE_BIND_CURSOR))) { + rsc->tiled = false; + } else { + rsc->tiled = true; + } + vc4_setup_slices(rsc); - rsc->tiling = VC4_TILING_FORMAT_LINEAR; rsc->bo = vc4_bo_alloc(vc4_screen(pscreen), rsc->slices[0].offset + rsc->slices[0].size0 * prsc->depth0, @@ -197,6 +303,9 @@ vc4_resource_create(struct pipe_screen *pscreen, if (!rsc->bo) goto fail; + if (tmpl->target != PIPE_BUFFER) + rsc->vc4_format = get_resource_texture_format(prsc); + return prsc; fail: vc4_resource_destroy(pscreen, prsc); @@ -215,7 +324,7 @@ vc4_resource_from_handle(struct pipe_screen *pscreen, if (!rsc) return NULL; - rsc->tiling = VC4_TILING_FORMAT_LINEAR; + rsc->tiled = false; rsc->bo = vc4_screen_bo_from_handle(pscreen, handle, &slice->stride); if (!rsc->bo) goto fail; @@ -223,6 +332,9 @@ vc4_resource_from_handle(struct pipe_screen *pscreen, #ifdef USE_VC4_SIMULATOR slice->stride = align(prsc->width0 * rsc->cpp, 16); #endif + slice->tiling = VC4_TILING_FORMAT_LINEAR; + + rsc->vc4_format = get_resource_texture_format(prsc); return prsc; @@ -258,6 +370,7 @@ vc4_create_surface(struct pipe_context *pctx, psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer; psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer; surface->offset = rsc->slices[level].offset; + surface->tiling = rsc->slices[level].tiling; return &surface->base; } diff --git a/src/gallium/drivers/vc4/vc4_resource.h b/src/gallium/drivers/vc4/vc4_resource.h index 34ca7ec8abb..caefbd057c0 100644 --- a/src/gallium/drivers/vc4/vc4_resource.h +++ b/src/gallium/drivers/vc4/vc4_resource.h @@ -26,12 +26,20 @@ #define VC4_RESOURCE_H #include "vc4_screen.h" +#include "vc4_packet.h" #include "util/u_transfer.h" +struct vc4_transfer { + struct pipe_transfer base; + void *map; +}; + struct vc4_resource_slice { uint32_t offset; uint32_t stride; uint32_t size0; + /** One of VC4_TILING_FORMAT_* */ + uint8_t tiling; }; struct vc4_surface { @@ -41,6 +49,7 @@ struct vc4_surface { uint32_t width; uint16_t height; uint16_t depth; + uint8_t tiling; }; struct vc4_resource { @@ -48,8 +57,9 @@ struct vc4_resource { struct vc4_bo *bo; struct vc4_resource_slice slices[VC4_MAX_MIP_LEVELS]; int cpp; - /** One of VC4_TILING_FORMAT_* */ - uint8_t tiling; + bool tiled; + /** One of VC4_TEXTURE_TYPE_* */ + enum vc4_texture_data_type vc4_format; }; static INLINE struct vc4_resource * @@ -64,6 +74,12 @@ vc4_surface(struct pipe_surface *psurf) return (struct vc4_surface *)psurf; } +static INLINE struct vc4_transfer * +vc4_transfer(struct pipe_transfer *ptrans) +{ + return (struct vc4_transfer *)ptrans; +} + void vc4_resource_screen_init(struct pipe_screen *pscreen); void vc4_resource_context_init(struct pipe_context *pctx); diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c index feff50c4b05..0c62b446b4e 100644 --- a/src/gallium/drivers/vc4/vc4_screen.c +++ b/src/gallium/drivers/vc4/vc4_screen.c @@ -302,7 +302,7 @@ vc4_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader, return 0; } -uint8_t +static uint8_t vc4_get_texture_format(enum pipe_format format) { switch (format) { diff --git a/src/gallium/drivers/vc4/vc4_screen.h b/src/gallium/drivers/vc4/vc4_screen.h index 5cfdcaeed9f..a45a6e7a365 100644 --- a/src/gallium/drivers/vc4/vc4_screen.h +++ b/src/gallium/drivers/vc4/vc4_screen.h @@ -64,8 +64,6 @@ vc4_screen_bo_from_handle(struct pipe_screen *pscreen, struct winsys_handle *whandle, unsigned *out_stride); -uint8_t vc4_get_texture_format(enum pipe_format format); - extern uint32_t vc4_debug; #endif /* VC4_SCREEN_H */ diff --git a/src/gallium/drivers/vc4/vc4_simulator_validate.c b/src/gallium/drivers/vc4/vc4_simulator_validate.c index c062d8a25bd..00ec301dbb6 100644 --- a/src/gallium/drivers/vc4/vc4_simulator_validate.c +++ b/src/gallium/drivers/vc4/vc4_simulator_validate.c @@ -47,6 +47,53 @@ void *validated, \ void *untrusted + +/** Return the width in pixels of a 64-byte microtile. */ +static uint32_t +utile_width(int cpp) +{ + switch (cpp) { + case 1: + case 2: + return 8; + case 4: + return 4; + case 8: + return 2; + default: + DRM_ERROR("unknown cpp: %d\n", cpp); + return 1; + } +} + +/** Return the height in pixels of a 64-byte microtile. */ +static uint32_t +utile_height(int cpp) +{ + switch (cpp) { + case 1: + return 8; + case 2: + case 4: + case 8: + return 4; + default: + DRM_ERROR("unknown cpp: %d\n", cpp); + return 1; + } +} + +/** + * The texture unit decides what tiling format a particular miplevel is using + * this function, so we lay out our miptrees accordingly. + */ +static bool +size_is_lt(uint32_t width, uint32_t height, int cpp) +{ + return (width <= 4 * utile_width(cpp) || + height <= 4 * utile_height(cpp)); +} + static bool vc4_use_bo(struct exec_info *exec, uint32_t hindex, @@ -105,47 +152,50 @@ check_tex_size(struct exec_info *exec, struct drm_gem_cma_object *fbo, uint32_t offset, uint8_t tiling_format, uint32_t width, uint32_t height, uint8_t cpp) { - uint32_t width_align, height_align; - uint32_t aligned_row_len, aligned_h, size; + uint32_t aligned_width, aligned_height, stride, size; + uint32_t utile_w = utile_width(cpp); + uint32_t utile_h = utile_height(cpp); + + /* The values are limited by the packet/texture parameter bitfields, + * so we don't need to worry as much about integer overflow. + */ + BUG_ON(width > 65535); + BUG_ON(height > 65535); switch (tiling_format) { case VC4_TILING_FORMAT_LINEAR: - width_align = 16; - height_align = 1; + aligned_width = roundup(width, 16 / cpp); + aligned_height = height; break; case VC4_TILING_FORMAT_T: - width_align = 128; - height_align = 32; + aligned_width = roundup(width, utile_w * 8); + aligned_height = roundup(height, utile_h * 8); break; case VC4_TILING_FORMAT_LT: - width_align = 16; - height_align = 4; + aligned_width = roundup(width, utile_w); + aligned_height = roundup(height, utile_h); break; default: DRM_ERROR("buffer tiling %d unsupported\n", tiling_format); return false; } - /* The values are limited by the packet/texture parameter bitfields, - * so we don't need to worry as much about integer overflow. - */ - BUG_ON(width > 65535); - BUG_ON(height > 65535); - - aligned_row_len = roundup(width * cpp, width_align); - aligned_h = roundup(height, height_align); + stride = aligned_width * cpp; - if (INT_MAX / aligned_row_len < aligned_h) { - DRM_ERROR("Overflow in fbo size (%d * %d)\n", - aligned_row_len, aligned_h); + if (INT_MAX / stride < aligned_height) { + DRM_ERROR("Overflow in fbo size (%dx%d -> %dx%d)\n", + width, height, + aligned_width, aligned_height); return false; } - size = aligned_row_len * aligned_h; + size = stride * aligned_height; if (size + offset < size || size + offset > fbo->base.size) { - DRM_ERROR("Overflow in %dx%d fbo size (%d + %d > %d)\n", - width, height, size, offset, fbo->base.size); + DRM_ERROR("Overflow in %dx%d (%dx%d) fbo size (%d + %d > %d)\n", + width, height, + aligned_width, aligned_height, + size, offset, fbo->base.size); return false; } @@ -706,8 +756,8 @@ reloc_tex(struct exec_info *exec, uint32_t miplevels = (p0 & 15); uint32_t width = (p1 >> 8) & 2047; uint32_t height = (p1 >> 20) & 2047; - uint32_t cpp, tiling_format; - int i; + uint32_t cpp, tiling_format, utile_w, utile_h; + uint32_t i; enum vc4_texture_data_type type; if (width == 0) @@ -751,12 +801,16 @@ reloc_tex(struct exec_info *exec, DRM_ERROR("Texture format %d unsupported\n", type); return false; } + utile_w = utile_width(cpp); + utile_h = utile_height(cpp); if (type == VC4_TEXTURE_TYPE_RGBA32R) { tiling_format = VC4_TILING_FORMAT_LINEAR; } else { - DRM_ERROR("Tiling formats not yet supported\n"); - return false; + if (size_is_lt(width, height, cpp)) + tiling_format = VC4_TILING_FORMAT_LT; + else + tiling_format = VC4_TILING_FORMAT_T; } if (!vc4_use_bo(exec, texture_handle_index, VC4_MODE_RENDER, &tex)) @@ -771,17 +825,44 @@ reloc_tex(struct exec_info *exec, * sure there is actually space in the BO. */ for (i = 1; i <= miplevels; i++) { - uint32_t level_width = align(max(width >> i, 1), 16 / cpp); - uint32_t level_height = max(height >> i, 1); - uint32_t level_size = level_width * level_height * cpp; + uint32_t level_width = max(width >> i, 1u); + uint32_t level_height = max(height >> i, 1u); + uint32_t aligned_width, aligned_height; + uint32_t level_size; + + /* Once the levels get small enough, they drop from T to LT. */ + if (tiling_format == VC4_TILING_FORMAT_T && + size_is_lt(level_width, level_height, cpp)) { + tiling_format = VC4_TILING_FORMAT_LT; + } + + switch (tiling_format) { + case VC4_TILING_FORMAT_T: + aligned_width = roundup(level_width, utile_w * 8); + aligned_height = roundup(level_height, utile_h * 8); + break; + case VC4_TILING_FORMAT_LT: + aligned_width = roundup(level_width, utile_w); + aligned_height = roundup(level_height, utile_h); + break; + default: + aligned_width = roundup(level_width, 16 / cpp); + aligned_height = height; + break; + } + + level_size = aligned_width * cpp * aligned_height; if (offset < level_size) { - DRM_ERROR("Level %d (%dx%d) size %db overflowed " - "buffer bounds (offset %d)\n", + DRM_ERROR("Level %d (%dx%d -> %dx%d) size %db " + "overflowed buffer bounds (offset %d)\n", i, level_width, level_height, + aligned_width, aligned_height, level_size, offset); return false; } + + offset -= level_size; } *validated_p0 = tex->paddr + p0; diff --git a/src/gallium/drivers/vc4/vc4_tiling.c b/src/gallium/drivers/vc4/vc4_tiling.c new file mode 100644 index 00000000000..f9801c9cefd --- /dev/null +++ b/src/gallium/drivers/vc4/vc4_tiling.c @@ -0,0 +1,321 @@ +/* + * Copyright © 2014 Broadcom + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/** @file vc4_tiling.c + * + * Handles information about the VC4 tiling formats, and loading and storing + * from them. + * + * Texture mipmap levels on VC4 are (with the exception of 32-bit RGBA raster + * textures for scanout) stored as groups of microtiles. If the texture is at + * least 4x4 microtiles (utiles), then those microtiles are arranged in a sort + * of Hilbert-fractal-ish layout (T), otherwise the microtiles are in raster + * order (LT). + * + * Specifically, the T format has: + * + * - 64b utiles of pixels in a raster-order grid according to cpp. It's 4x4 + * pixels at 32 bit depth. + * + * - 1k subtiles made of a 4x4 raster-order grid of 64b utiles (so usually + * 16x16 pixels). + * + * - 4k tiles made of a 2x2 grid of 1k subtiles (so usually 32x32 pixels). On + * even 4k tile rows, they're arranged as (BL, TL, TR, BR), and on odd rows + * they're (TR, BR, BL, TL), where bottom left is start of memory. + * + * - an image made of 4k tiles in rows either left-to-right (even rows of 4k + * tiles) or right-to-left (odd rows of 4k tiles). + */ + +#include "vc4_screen.h" +#include "vc4_context.h" +#include "vc4_tiling.h" + +/** Return the width in pixels of a 64-byte microtile. */ +uint32_t +vc4_utile_width(int cpp) +{ + switch (cpp) { + case 1: + case 2: + return 8; + case 4: + return 4; + case 8: + return 2; + default: + fprintf(stderr, "unknown cpp: %d\n", cpp); + abort(); + } +} + +/** Return the height in pixels of a 64-byte microtile. */ +uint32_t +vc4_utile_height(int cpp) +{ + switch (cpp) { + case 1: + return 8; + case 2: + case 4: + case 8: + return 4; + default: + fprintf(stderr, "unknown cpp: %d\n", cpp); + abort(); + } +} + +/** + * The texture unit decides what tiling format a particular miplevel is using + * this function, so we lay out our miptrees accordingly. + */ +bool +vc4_size_is_lt(uint32_t width, uint32_t height, int cpp) +{ + return (width <= 4 * vc4_utile_width(cpp) || + height <= 4 * vc4_utile_height(cpp)); +} + +void +vc4_load_utile(void *dst, void *src, uint32_t dst_stride, uint32_t cpp) +{ + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t row_size = 64 / utile_h; + + for (int y = 0; y < utile_h; y++) { + memcpy(dst, src, row_size); + dst += dst_stride; + src += row_size; + } +} + +void +vc4_store_utile(void *dst, void *src, uint32_t src_stride, uint32_t cpp) +{ + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t row_size = 64 / utile_h; + + for (int y = 0; y < utile_h; y++) { + memcpy(dst, src, row_size); + dst += row_size; + src += src_stride; + } +} + +static void +check_box_utile_alignment(const struct pipe_box *box, int cpp) +{ + uint32_t utile_w = vc4_utile_width(cpp); + uint32_t utile_h = vc4_utile_height(cpp); + + assert(!(box->x & (utile_w - 1))); + assert(!(box->y & (utile_h - 1))); + assert(!(box->width & (utile_w - 1))); + assert(!(box->height & (utile_h - 1))); +} + +static void +vc4_load_lt_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + int cpp, const struct pipe_box *box) +{ + uint32_t utile_w = vc4_utile_width(cpp); + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t xstart = box->x / utile_w; + uint32_t ystart = box->y / utile_h; + + for (uint32_t y = 0; y < box->height; y += utile_h) { + for (int x = 0; x < box->width; x += utile_w) { + vc4_load_utile(dst + (dst_stride * y + + x * cpp), + src + ((ystart + y) * src_stride + + (xstart + x) * 64 / utile_w), + dst_stride, cpp); + } + } +} + +static void +vc4_store_lt_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + int cpp, const struct pipe_box *box) +{ + uint32_t utile_w = vc4_utile_width(cpp); + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t xstart = box->x / utile_w; + uint32_t ystart = box->y / utile_h; + + for (uint32_t y = 0; y < box->height; y += utile_h) { + for (int x = 0; x < box->width; x += utile_w) { + vc4_store_utile(dst + ((ystart + y) * dst_stride + + (xstart + x) * 64 / utile_w), + src + (src_stride * y + + x * cpp), + src_stride, cpp); + } + } +} + +/** + * Takes a utile x and y (and the number of utiles of width of the image) and + * returns the offset to the utile within a VC4_TILING_FORMAT_TF image. + */ +static uint32_t +t_utile_address(uint32_t utile_x, uint32_t utile_y, + uint32_t utile_stride) +{ + /* T images have to be aligned to 8 utiles (4x4 subtiles, which are + * 2x2 in a 4k tile). + */ + assert(!(utile_stride & 7)); + uint32_t tile_stride = utile_stride >> 3; + /* 4k tile offsets. */ + uint32_t tile_x = utile_x >> 3; + uint32_t tile_y = utile_y >> 3; + bool odd_tile_y = tile_y & 1; + + /* Odd lines of 4k tiles go right-to-left. */ + if (odd_tile_y) + tile_x = tile_stride - tile_x - 1; + + uint32_t tile_offset = 4096 * (tile_y * tile_stride + tile_x); + + uint32_t stile_x = (utile_x >> 2) & 1; + uint32_t stile_y = (utile_y >> 2) & 1; + uint32_t stile_index = (stile_y << 1) + stile_x; + static const uint32_t odd_stile_map[4] = {2, 1, 3, 0}; + static const uint32_t even_stile_map[4] = {0, 3, 1, 2}; + + uint32_t stile_offset = 1024 * (odd_tile_y ? + odd_stile_map[stile_index] : + even_stile_map[stile_index]); + + uint32_t utile_offset = 64 * ((utile_y & 3) * 4 + (utile_x & 3)); + +#if 0 + fprintf(stderr, "utile %d,%d -> %d + %d + %d (stride %d,%d) = %d\n", + utile_x, utile_y, + tile_offset, stile_offset, utile_offset, + utile_stride, tile_stride, + tile_offset + stile_offset + utile_offset); +#endif + + return tile_offset + stile_offset + utile_offset; +} + +static void +vc4_load_t_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + int cpp, const struct pipe_box *box) +{ + uint32_t utile_w = vc4_utile_width(cpp); + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t utile_stride = src_stride / cpp / utile_w; + uint32_t xstart = box->x / utile_w; + uint32_t ystart = box->y / utile_h; + + for (uint32_t y = 0; y < box->height / utile_h; y++) { + for (int x = 0; x < box->width / utile_w; x++) { + vc4_load_utile(dst + (y * utile_h * dst_stride + + x * utile_w * cpp), + src + t_utile_address(xstart + x, + ystart + y, + utile_stride), + dst_stride, cpp); + } + } +} + +static void +vc4_store_t_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + int cpp, const struct pipe_box *box) +{ + uint32_t utile_w = vc4_utile_width(cpp); + uint32_t utile_h = vc4_utile_height(cpp); + uint32_t utile_stride = dst_stride / cpp / utile_w; + uint32_t xstart = box->x / utile_w; + uint32_t ystart = box->y / utile_h; + + for (uint32_t y = 0; y < box->height / utile_h; y++) { + for (int x = 0; x < box->width / utile_w; x++) { + vc4_store_utile(dst + t_utile_address(xstart + x, + ystart + y, + utile_stride), + src + (y * utile_h * src_stride + + x * utile_w * cpp), + src_stride, cpp); + } + } +} + +/** + * Loads pixel data from the start (microtile-aligned) box in @src to the + * start of @dst according to the given tiling format. + */ +void +vc4_load_tiled_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + uint8_t tiling_format, int cpp, + const struct pipe_box *box) +{ + check_box_utile_alignment(box, cpp); + + if (tiling_format == VC4_TILING_FORMAT_LT) { + vc4_load_lt_image(dst, dst_stride, + src, src_stride, + cpp, box); + } else { + assert(tiling_format == VC4_TILING_FORMAT_T); + vc4_load_t_image(dst, dst_stride, + src, src_stride, + cpp, box); + } +} + +/** + * Stores pixel data from the start of @src into a (microtile-aligned) box in + * @dst according to the given tiling format. + */ +void +vc4_store_tiled_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + uint8_t tiling_format, int cpp, + const struct pipe_box *box) +{ + check_box_utile_alignment(box, cpp); + + if (tiling_format == VC4_TILING_FORMAT_LT) { + vc4_store_lt_image(dst, dst_stride, + src, src_stride, + cpp, box); + } else { + assert(tiling_format == VC4_TILING_FORMAT_T); + vc4_store_t_image(dst, dst_stride, + src, src_stride, + cpp, box); + } +} + diff --git a/src/gallium/drivers/vc4/vc4_tiling.h b/src/gallium/drivers/vc4/vc4_tiling.h new file mode 100644 index 00000000000..b5d10da3417 --- /dev/null +++ b/src/gallium/drivers/vc4/vc4_tiling.h @@ -0,0 +1,41 @@ +/* + * Copyright © 2014 Broadcom + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef VC4_TILING_H +#define VC4_TILING_H + +uint32_t vc4_utile_width(int cpp); +uint32_t vc4_utile_height(int cpp); +bool vc4_size_is_lt(uint32_t width, uint32_t height, int cpp); +void vc4_load_utile(void *dst, void *src, uint32_t dst_stride, uint32_t cpp); +void vc4_store_utile(void *dst, void *src, uint32_t src_stride, uint32_t cpp); +void vc4_load_tiled_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + uint8_t tiling_format, int cpp, + const struct pipe_box *box); +void vc4_store_tiled_image(void *dst, uint32_t dst_stride, + void *src, uint32_t src_stride, + uint8_t tiling_format, int cpp, + const struct pipe_box *box); + +#endif /* VC4_TILING_H */ |