diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/pipe/cell/spu/spu_texture.c | 139 | ||||
| -rw-r--r-- | src/mesa/pipe/cell/spu/spu_texture.h | 43 |
2 files changed, 182 insertions, 0 deletions
diff --git a/src/mesa/pipe/cell/spu/spu_texture.c b/src/mesa/pipe/cell/spu/spu_texture.c new file mode 100644 index 0000000000..6d566a5006 --- /dev/null +++ b/src/mesa/pipe/cell/spu/spu_texture.c @@ -0,0 +1,139 @@ +/************************************************************************** + * + * Copyright 2008 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. + * + **************************************************************************/ + + +#include "pipe/p_compiler.h" +#include "spu_main.h" +#include "spu_texture.h" +#include "spu_tile.h" + + +/** + * Number of texture tiles to cache. + * Note that this will probably be the largest consumer of SPU local store/ + * memory for this driver! + */ +#define CACHE_SIZE 16 + +static tile_t tex_tiles[CACHE_SIZE] ALIGN16_ATTRIB; + +static int tex_tile_x[CACHE_SIZE], tex_tile_y[CACHE_SIZE]; + + + +/** + * Mark all tex cache entries as invalid. + */ +void +invalidate_tex_cache(void) +{ + /* XXX memset? */ + uint i; + for (i = 0; i < CACHE_SIZE; i++) + tex_tile_x[i] = tex_tile_y[i] = -1; +} + + +/** + * Return the cache pos/index which corresponds to texel (i,j) + */ +static INLINE uint +cache_pos(uint i, uint j) +{ + uint tx = i / TILE_SIZE; + uint ty = j / TILE_SIZE; + uint pos = (tx + ty * 4) % CACHE_SIZE; + return pos; +} + + +/** + * Make sure the tile for texel (i,j) is present, return its position/index + * in the cache. + */ +static uint +get_tex_tile(uint i, uint j) +{ + const int tx = i / TILE_SIZE; + const int ty = j / TILE_SIZE; + const uint pos = cache_pos(i, j); + + if (tex_tile_x[pos] != tx || tex_tile_y[pos] != ty) { + /* texture cache miss, fetch tile from main memory */ + const uint tiles_per_row = spu.texture.width / TILE_SIZE; + const uint bytes_per_tile = sizeof(tile_t); + const void *src = (const ubyte *) spu.texture.start + + (ty * tiles_per_row + tx) * bytes_per_tile; + + printf("SPU %u: tex cache miss at %d, %d pos=%u old=%d,%d\n", + spu.init.id, tx, ty, pos, + tex_tile_x[pos], tex_tile_y[pos]); +#if 0 + printf("SPU %u: get tex tile from %p to %p\n", + spu.init.id, src, tex_tiles[pos].t32); +#endif + + ASSERT_ALIGN16(tex_tiles[pos].t32); + ASSERT_ALIGN16(src); + + mfc_get(tex_tiles[pos].t32, /* dest */ + (unsigned int) src, + bytes_per_tile, /* size */ + TAG_TEXTURE_TILE, + 0, /* tid */ + 0 /* rid */); + + wait_on_mask(1 << TAG_TEXTURE_TILE); + + tex_tile_x[pos] = tx; + tex_tile_y[pos] = ty; + } + else { +#if 0 + printf("SPU %u: tex cache HIT at %d, %d\n", + spu.init.id, tx, ty); +#endif + } + + return pos; +} + + +/** + * Get texture sample at texcoord. + * XXX this is extremely primitive for now. + */ +uint +sample_texture(const float *texcoord) +{ + /* wrap/repeat */ + uint i = (uint) (texcoord[0] * spu.texture.width) % spu.texture.width; + uint j = (uint) (texcoord[1] * spu.texture.height) % spu.texture.height; + uint pos = get_tex_tile(i, j); + uint texel = tex_tiles[pos].t32[j % TILE_SIZE][i % TILE_SIZE]; + return texel; +} diff --git a/src/mesa/pipe/cell/spu/spu_texture.h b/src/mesa/pipe/cell/spu/spu_texture.h new file mode 100644 index 0000000000..b75b7ac44f --- /dev/null +++ b/src/mesa/pipe/cell/spu/spu_texture.h @@ -0,0 +1,43 @@ +/************************************************************************** + * + * Copyright 2008 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. + * + **************************************************************************/ + +#ifndef SPU_TEXTURE_H +#define SPU_TEXTURE_H + + +#include "pipe/p_compiler.h" + + +extern void +invalidate_tex_cache(void); + + +extern uint +sample_texture(const float *texcoord); + + +#endif /* SPU_TEXTURE_H */ |