diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_texture.c')
| -rw-r--r-- | src/gallium/drivers/cell/ppu/cell_texture.c | 531 |
1 files changed, 531 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_texture.c b/src/gallium/drivers/cell/ppu/cell_texture.c new file mode 100644 index 00000000000..9ba995ab7d3 --- /dev/null +++ b/src/gallium/drivers/cell/ppu/cell_texture.c @@ -0,0 +1,531 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * 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, sub license, 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + /* + * Authors: + * Keith Whitwell <[email protected]> + * Michel Dänzer <[email protected]> + * Brian Paul + */ + +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" +#include "pipe/internal/p_winsys_screen.h" +#include "util/u_math.h" +#include "util/u_memory.h" + +#include "cell_context.h" +#include "cell_state.h" +#include "cell_texture.h" + + + +static unsigned +minify(unsigned d) +{ + return MAX2(1, d>>1); +} + + +static void +cell_texture_layout(struct cell_texture *ct) +{ + struct pipe_texture *pt = &ct->base; + unsigned level; + unsigned width = pt->width[0]; + unsigned height = pt->height[0]; + unsigned depth = pt->depth[0]; + + ct->buffer_size = 0; + + for ( level = 0 ; level <= pt->last_level ; level++ ) { + unsigned size; + unsigned w_tile, h_tile; + + assert(level < CELL_MAX_TEXTURE_LEVELS); + + /* width, height, rounded up to tile size */ + w_tile = align(width, TILE_SIZE); + h_tile = align(height, TILE_SIZE); + + pt->width[level] = width; + pt->height[level] = height; + pt->depth[level] = depth; + pt->nblocksx[level] = pf_get_nblocksx(&pt->block, w_tile); + pt->nblocksy[level] = pf_get_nblocksy(&pt->block, h_tile); + + ct->stride[level] = pt->nblocksx[level] * pt->block.size; + + ct->level_offset[level] = ct->buffer_size; + + size = pt->nblocksx[level] * pt->nblocksy[level] * pt->block.size; + if (pt->target == PIPE_TEXTURE_CUBE) + size *= 6; + else + size *= depth; + + ct->buffer_size += size; + + width = minify(width); + height = minify(height); + depth = minify(depth); + } +} + + +static struct pipe_texture * +cell_texture_create(struct pipe_screen *screen, + const struct pipe_texture *templat) +{ + struct pipe_winsys *ws = screen->winsys; + struct cell_texture *ct = CALLOC_STRUCT(cell_texture); + if (!ct) + return NULL; + + ct->base = *templat; + ct->base.refcount = 1; + ct->base.screen = screen; + + cell_texture_layout(ct); + + ct->buffer = ws->buffer_create(ws, 32, PIPE_BUFFER_USAGE_PIXEL, + ct->buffer_size); + + if (!ct->buffer) { + FREE(ct); + return NULL; + } + + return &ct->base; +} + + +static void +cell_texture_release(struct pipe_screen *screen, + struct pipe_texture **pt) +{ + if (!*pt) + return; + + /* + DBG("%s %p refcount will be %d\n", + __FUNCTION__, (void *) *pt, (*pt)->refcount - 1); + */ + if (--(*pt)->refcount <= 0) { + /* Delete this texture now. + * But note that the underlying pipe_buffer may linger... + */ + struct cell_texture *ct = cell_texture(*pt); + uint i; + + /* + DBG("%s deleting %p\n", __FUNCTION__, (void *) ct); + */ + + pipe_buffer_reference(screen, &ct->buffer, NULL); + + for (i = 0; i < CELL_MAX_TEXTURE_LEVELS; i++) { + /* Unreference the tiled image buffer. + * It may not actually be deleted until a fence is hit. + */ + if (ct->tiled_buffer[i]) { + ct->tiled_mapped[i] = NULL; + pipe_buffer_reference(screen, &ct->tiled_buffer[i], NULL); + } + } + + FREE(ct); + } + *pt = NULL; +} + + + +/** + * Convert image from linear layout to tiled layout. 4-byte pixels. + */ +static void +twiddle_image_uint(uint w, uint h, uint tile_size, uint *dst, + uint src_stride, const uint *src) +{ + const uint tile_size2 = tile_size * tile_size; + const uint h_t = (h + tile_size - 1) / tile_size; + const uint w_t = (w + tile_size - 1) / tile_size; + + uint it, jt; /* tile counters */ + uint i, j; /* intra-tile counters */ + + src_stride /= 4; /* convert from bytes to pixels */ + + /* loop over dest tiles */ + for (it = 0; it < h_t; it++) { + for (jt = 0; jt < w_t; jt++) { + /* start of dest tile: */ + uint *tdst = dst + (it * w_t + jt) * tile_size2; + + /* compute size of this tile (may be smaller than tile_size) */ + /* XXX note: a compiler bug was found here. That's why the code + * looks as it does. + */ + uint tile_width = w - jt * tile_size; + tile_width = MIN2(tile_width, tile_size); + uint tile_height = h - it * tile_size; + tile_height = MIN2(tile_height, tile_size); + + /* loop over texels in the tile */ + for (i = 0; i < tile_height; i++) { + for (j = 0; j < tile_width; j++) { + const uint srci = it * tile_size + i; + const uint srcj = jt * tile_size + j; + ASSERT(srci < h); + ASSERT(srcj < w); + tdst[i * tile_size + j] = src[srci * src_stride + srcj]; + } + } + } + } +} + + +/** + * For Cell. Basically, rearrange the pixels/quads from this layout: + * +--+--+--+--+ + * |p0|p1|p2|p3|.... + * +--+--+--+--+ + * + * to this layout: + * +--+--+ + * |p0|p1|.... + * +--+--+ + * |p2|p3| + * +--+--+ + */ +static void +twiddle_tile(const uint *tileIn, uint *tileOut) +{ + int y, x; + + for (y = 0; y < TILE_SIZE; y+=2) { + for (x = 0; x < TILE_SIZE; x+=2) { + int k = 4 * (y/2 * TILE_SIZE/2 + x/2); + tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k]; + tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1]; + tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2]; + tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3]; + } + } +} + + +/** + * Convert image from tiled layout to linear layout. 4-byte pixels. + */ +static void +untwiddle_image_uint(uint w, uint h, uint tile_size, uint *dst, + uint dst_stride, const uint *src) +{ + const uint tile_size2 = tile_size * tile_size; + const uint h_t = (h + tile_size - 1) / tile_size; + const uint w_t = (w + tile_size - 1) / tile_size; + uint *tile_buf; + uint it, jt; /* tile counters */ + uint i, j; /* intra-tile counters */ + + dst_stride /= 4; /* convert from bytes to pixels */ + + tile_buf = align_malloc(tile_size * tile_size * 4, 16); + + /* loop over src tiles */ + for (it = 0; it < h_t; it++) { + for (jt = 0; jt < w_t; jt++) { + /* start of src tile: */ + const uint *tsrc = src + (it * w_t + jt) * tile_size2; + + twiddle_tile(tsrc, tile_buf); + tsrc = tile_buf; + + /* compute size of this tile (may be smaller than tile_size) */ + /* XXX note: a compiler bug was found here. That's why the code + * looks as it does. + */ + uint tile_width = w - jt * tile_size; + tile_width = MIN2(tile_width, tile_size); + uint tile_height = h - it * tile_size; + tile_height = MIN2(tile_height, tile_size); + + /* loop over texels in the tile */ + for (i = 0; i < tile_height; i++) { + for (j = 0; j < tile_width; j++) { + uint dsti = it * tile_size + i; + uint dstj = jt * tile_size + j; + ASSERT(dsti < h); + ASSERT(dstj < w); + dst[dsti * dst_stride + dstj] = tsrc[i * tile_size + j]; + } + } + } + } + + align_free(tile_buf); +} + + +/** + * Convert linear texture image data to tiled format for SPU usage. + */ +static void +cell_twiddle_texture(struct pipe_screen *screen, + struct pipe_surface *surface) +{ + struct cell_texture *ct = cell_texture(surface->texture); + const uint level = surface->level; + const uint texWidth = ct->base.width[level]; + const uint texHeight = ct->base.height[level]; + const uint bufWidth = align(texWidth, TILE_SIZE); + const uint bufHeight = align(texHeight, TILE_SIZE); + const void *map = screen->surface_map(screen, surface, PIPE_BUFFER_USAGE_CPU_READ); + const uint *src = (const uint *) map; + + switch (ct->base.format) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + case PIPE_FORMAT_B8G8R8A8_UNORM: + case PIPE_FORMAT_S8Z24_UNORM: + { + int numFaces = ct->base.target == PIPE_TEXTURE_CUBE ? 6 : 1; + int offset = bufWidth * bufHeight * 4 * surface->face; + uint *dst; + + if (!ct->tiled_buffer[level]) { + /* allocate buffer for tiled data now */ + struct pipe_winsys *ws = screen->winsys; + uint bytes = bufWidth * bufHeight * 4 * numFaces; + ct->tiled_buffer[level] = + ws->buffer_create(ws, 16, PIPE_BUFFER_USAGE_PIXEL, bytes); + /* and map it */ + ct->tiled_mapped[level] = + ws->buffer_map(ws, ct->tiled_buffer[level], + PIPE_BUFFER_USAGE_GPU_READ); + } + dst = (uint *) ((ubyte *) ct->tiled_mapped[level] + offset); + + twiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst, + surface->stride, src); + } + break; + default: + printf("Cell: twiddle unsupported texture format %s\n", + pf_name(ct->base.format)); + } + + screen->surface_unmap(screen, surface); +} + + +/** + * Convert SPU tiled texture image data to linear format for app usage. + */ +static void +cell_untwiddle_texture(struct pipe_screen *screen, + struct pipe_surface *surface) +{ + struct cell_texture *ct = cell_texture(surface->texture); + const uint level = surface->level; + const uint texWidth = ct->base.width[level]; + const uint texHeight = ct->base.height[level]; + const void *map = screen->surface_map(screen, surface, PIPE_BUFFER_USAGE_CPU_READ); + const uint *src = (const uint *) ((const ubyte *) map + surface->offset); + + switch (ct->base.format) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + case PIPE_FORMAT_B8G8R8A8_UNORM: + case PIPE_FORMAT_S8Z24_UNORM: + { + int numFaces = ct->base.target == PIPE_TEXTURE_CUBE ? 6 : 1; + int offset = surface->stride * texHeight * 4 * surface->face; + uint *dst; + + if (!ct->untiled_data[level]) { + ct->untiled_data[level] = + align_malloc(surface->stride * texHeight * 4 * numFaces, 16); + } + + dst = (uint *) ((ubyte *) ct->untiled_data[level] + offset); + + untwiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst, + surface->stride, src); + } + break; + default: + { + ct->untiled_data[level] = NULL; + printf("Cell: untwiddle unsupported texture format %s\n", + pf_name(ct->base.format)); + } + } + + screen->surface_unmap(screen, surface); +} + + +static struct pipe_surface * +cell_get_tex_surface(struct pipe_screen *screen, + struct pipe_texture *pt, + unsigned face, unsigned level, unsigned zslice, + unsigned usage) +{ + struct cell_texture *ct = cell_texture(pt); + struct pipe_surface *ps; + + ps = CALLOC_STRUCT(pipe_surface); + if (ps) { + ps->refcount = 1; + pipe_texture_reference(&ps->texture, pt); + ps->format = pt->format; + ps->block = pt->block; + ps->width = pt->width[level]; + ps->height = pt->height[level]; + ps->nblocksx = pt->nblocksx[level]; + ps->nblocksy = pt->nblocksy[level]; + ps->stride = ct->stride[level]; + ps->offset = ct->level_offset[level]; + ps->usage = usage; + + /* XXX may need to override usage flags (see sp_texture.c) */ + + pipe_texture_reference(&ps->texture, pt); + ps->face = face; + ps->level = level; + ps->zslice = zslice; + + if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) { + ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) * + ps->nblocksy * + ps->stride; + } + else { + assert(face == 0); + assert(zslice == 0); + } + + if (ps->usage & PIPE_BUFFER_USAGE_CPU_READ) { + /* convert from tiled to linear layout */ + cell_untwiddle_texture(screen, ps); + } + } + return ps; +} + + +static void +cell_tex_surface_release(struct pipe_screen *screen, + struct pipe_surface **s) +{ + struct cell_texture *ct = cell_texture((*s)->texture); + const uint level = (*s)->level; + struct pipe_surface *surf = *s; + + if ((surf->usage & PIPE_BUFFER_USAGE_CPU_READ) && (ct->untiled_data[level])) + { + align_free(ct->untiled_data[level]); + ct->untiled_data[level] = NULL; + } + + if ((ct->base.tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) && + (surf->usage & PIPE_BUFFER_USAGE_CPU_WRITE)) { + /* convert from linear to tiled layout */ + cell_twiddle_texture(screen, surf); + } + + /* XXX if done rendering to teximage, re-tile */ + + if (--surf->refcount == 0) { + pipe_texture_reference(&surf->texture, NULL); + FREE(surf); + } + *s = NULL; +} + + +static void * +cell_surface_map(struct pipe_screen *screen, + struct pipe_surface *surface, + unsigned flags) +{ + ubyte *map; + struct cell_texture *ct = cell_texture(surface->texture); + const uint level = surface->level; + + assert(ct); + +#if 0 + if (flags & ~surface->usage) { + assert(0); + return NULL; + } +#endif + + map = pipe_buffer_map( screen, ct->buffer, flags ); + if (map == NULL) { + return NULL; + } + else { + if ((surface->usage & PIPE_BUFFER_USAGE_CPU_READ) && + (ct->untiled_data[level])) { + return (void *) ((ubyte *) ct->untiled_data[level] + surface->offset); + } + else { + return (void *) (map + surface->offset); + } + } +} + + +static void +cell_surface_unmap(struct pipe_screen *screen, + struct pipe_surface *surface) +{ + struct cell_texture *ct = cell_texture(surface->texture); + + assert(ct); + + pipe_buffer_unmap( screen, ct->buffer ); +} + + + +void +cell_init_screen_texture_funcs(struct pipe_screen *screen) +{ + screen->texture_create = cell_texture_create; + screen->texture_release = cell_texture_release; + + screen->get_tex_surface = cell_get_tex_surface; + screen->tex_surface_release = cell_tex_surface_release; + + screen->surface_map = cell_surface_map; + screen->surface_unmap = cell_surface_unmap; +} |