diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_texture.c')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_texture.c | 497 |
1 files changed, 497 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 0000000000..6a63a0e6ce --- /dev/null +++ b/src/gallium/drivers/cell/ppu/cell_texture.c @@ -0,0 +1,497 @@ +/************************************************************************** + * + * 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 <keith@tungstengraphics.com> + * Michel Dänzer <michel@tungstengraphics.com> + * 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 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 cell_texture *ct = CALLOC_STRUCT(cell_texture); + if (!ct) + return NULL; + + ct->base = *templat; + pipe_reference_init(&ct->base.reference, 1); + ct->base.screen = screen; + + cell_texture_layout(ct); + + ct->buffer = screen->buffer_create(screen, 32, PIPE_BUFFER_USAGE_PIXEL, + ct->buffer_size); + + if (!ct->buffer) { + FREE(ct); + return NULL; + } + + return &ct->base; +} + + +static void +cell_texture_destroy(struct pipe_texture *pt) +{ + struct cell_texture *ct = cell_texture(pt); + + if (ct->mapped) { + pipe_buffer_unmap(ct->buffer->screen, ct->buffer); + ct->mapped = NULL; + } + + pipe_buffer_reference(&ct->buffer, NULL); + + FREE(ct); +} + + + +/** + * 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); +} + + +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) { + pipe_reference_init(&ps->reference, 1); + pipe_texture_reference(&ps->texture, pt); + ps->format = pt->format; + ps->width = pt->width[level]; + ps->height = pt->height[level]; + ps->offset = ct->level_offset[level]; + /* XXX may need to override usage flags (see sp_texture.c) */ + ps->usage = usage; + ps->face = face; + ps->level = level; + ps->zslice = zslice; + + if (pt->target == PIPE_TEXTURE_CUBE) { + ps->offset += face * pt->nblocksy[level] * ct->stride[level]; + } + else if (pt->target == PIPE_TEXTURE_3D) { + ps->offset += zslice * pt->nblocksy[level] * ct->stride[level]; + } + else { + assert(face == 0); + assert(zslice == 0); + } + } + return ps; +} + + +static void +cell_tex_surface_destroy(struct pipe_surface *surf) +{ + pipe_texture_reference(&surf->texture, NULL); + FREE(surf); +} + + +/** + * Create new pipe_transfer object. + * This is used by the user to put tex data into a texture (and get it + * back out for glGetTexImage). + */ +static struct pipe_transfer * +cell_get_tex_transfer(struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned face, unsigned level, unsigned zslice, + enum pipe_transfer_usage usage, + unsigned x, unsigned y, unsigned w, unsigned h) +{ + struct cell_texture *ct = cell_texture(texture); + struct cell_transfer *ctrans; + + assert(texture); + assert(level <= texture->last_level); + + ctrans = CALLOC_STRUCT(cell_transfer); + if (ctrans) { + struct pipe_transfer *pt = &ctrans->base; + pipe_texture_reference(&pt->texture, texture); + pt->format = texture->format; + pt->block = texture->block; + pt->x = x; + pt->y = y; + pt->width = w; + pt->height = h; + pt->nblocksx = texture->nblocksx[level]; + pt->nblocksy = texture->nblocksy[level]; + pt->stride = ct->stride[level]; + pt->usage = usage; + pt->face = face; + pt->level = level; + pt->zslice = zslice; + + ctrans->offset = ct->level_offset[level]; + + if (texture->target == PIPE_TEXTURE_CUBE) { + ctrans->offset += face * pt->nblocksy * pt->stride; + } + else if (texture->target == PIPE_TEXTURE_3D) { + ctrans->offset += zslice * pt->nblocksy * pt->stride; + } + else { + assert(face == 0); + assert(zslice == 0); + } + return pt; + } + return NULL; +} + + +static void +cell_tex_transfer_destroy(struct pipe_transfer *t) +{ + struct cell_transfer *transfer = cell_transfer(t); + /* Effectively do the texture_update work here - if texture images + * needed post-processing to put them into hardware layout, this is + * where it would happen. For cell, nothing to do. + */ + assert (transfer->base.texture); + pipe_texture_reference(&transfer->base.texture, NULL); + FREE(transfer); +} + + +/** + * Return pointer to texture image data in linear layout. + */ +static void * +cell_transfer_map(struct pipe_screen *screen, struct pipe_transfer *transfer) +{ + struct cell_transfer *ctrans = cell_transfer(transfer); + struct pipe_texture *pt = transfer->texture; + struct cell_texture *ct = cell_texture(pt); + const uint level = ctrans->base.level; + const uint texWidth = pt->width[level]; + const uint texHeight = pt->height[level]; + const uint stride = ct->stride[level]; + unsigned flags = 0x0; + unsigned size; + + assert(transfer->texture); + + if (transfer->usage != PIPE_TRANSFER_READ) { + flags |= PIPE_BUFFER_USAGE_CPU_WRITE; + } + + if (transfer->usage != PIPE_TRANSFER_WRITE) { + flags |= PIPE_BUFFER_USAGE_CPU_READ; + } + + if (!ct->mapped) { + /* map now */ + ct->mapped = pipe_buffer_map(screen, ct->buffer, flags); + } + + /* + * Create a buffer of ordinary memory for the linear texture. + * This is the memory that the user will read/write. + */ + size = pt->nblocksx[level] * pt->nblocksy[level] * pt->block.size; + + ctrans->map = align_malloc(size, 16); + if (!ctrans->map) + return NULL; /* out of memory */ + + if (transfer->usage == PIPE_TRANSFER_READ || + transfer->usage == PIPE_TRANSFER_READ_WRITE) { + /* need to untwiddle the texture to make a linear version */ + const uint bpp = pf_get_size(ct->base.format); + if (bpp == 4) { + const uint *src = (uint *) (ct->mapped + ctrans->offset); + uint *dst = ctrans->map; + untwiddle_image_uint(texWidth, texHeight, TILE_SIZE, + dst, stride, src); + } + else { + // xxx fix + } + } + + return ctrans->map; +} + + +/** + * Called when user is done reading/writing texture data. + * If new data was written, this is where we convert the linear data + * to tiled data. + */ +static void +cell_transfer_unmap(struct pipe_screen *screen, + struct pipe_transfer *transfer) +{ + struct cell_transfer *ctrans = cell_transfer(transfer); + struct pipe_texture *pt = transfer->texture; + struct cell_texture *ct = cell_texture(pt); + const uint level = ctrans->base.level; + const uint texWidth = pt->width[level]; + const uint texHeight = pt->height[level]; + const uint stride = ct->stride[level]; + + if (!ct->mapped) { + /* map now */ + ct->mapped = pipe_buffer_map(screen, ct->buffer, + PIPE_BUFFER_USAGE_CPU_READ); + } + + if (transfer->usage == PIPE_TRANSFER_WRITE || + transfer->usage == PIPE_TRANSFER_READ_WRITE) { + /* The user wrote new texture data into the mapped buffer. + * We need to convert the new linear data into the twiddled/tiled format. + */ + const uint bpp = pf_get_size(ct->base.format); + if (bpp == 4) { + const uint *src = ctrans->map; + uint *dst = (uint *) (ct->mapped + ctrans->offset); + twiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst, stride, src); + } + else { + // xxx fix + } + } + + align_free(ctrans->map); + ctrans->map = NULL; +} + + +void +cell_init_screen_texture_funcs(struct pipe_screen *screen) +{ + screen->texture_create = cell_texture_create; + screen->texture_destroy = cell_texture_destroy; + + screen->get_tex_surface = cell_get_tex_surface; + screen->tex_surface_destroy = cell_tex_surface_destroy; + + screen->get_tex_transfer = cell_get_tex_transfer; + screen->tex_transfer_destroy = cell_tex_transfer_destroy; + + screen->transfer_map = cell_transfer_map; + screen->transfer_unmap = cell_transfer_unmap; +} |