diff options
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_texture.c')
| -rw-r--r-- | src/gallium/drivers/cell/spu/spu_texture.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_texture.c b/src/gallium/drivers/cell/spu/spu_texture.c index ceab246980..e9a2754e57 100644 --- a/src/gallium/drivers/cell/spu/spu_texture.c +++ b/src/gallium/drivers/cell/spu/spu_texture.c @@ -51,22 +51,25 @@ invalidate_tex_cache(void) static uint get_texel(uint unit, vec_uint4 coordinate) { + const unsigned texture_ea = (uintptr_t) spu.texture[unit].start; + ushort x = spu_extract(coordinate, 0); + ushort y = spu_extract(coordinate, 1); + unsigned tile_offset = sizeof(tile_t) + * ((y / TILE_SIZE * spu.texture[unit].tiles_per_row) + (x / TILE_SIZE)); + ushort texel_offset = (ushort) 4 + * (ushort) (((ushort) (y % TILE_SIZE) * (ushort) TILE_SIZE) + (x % TILE_SIZE)); vec_uint4 tmp; - unsigned x = spu_extract(coordinate, 0); - unsigned y = spu_extract(coordinate, 1); - const unsigned tiles_per_row = spu.texture[unit].width / TILE_SIZE; - unsigned tile_offset = sizeof(tile_t) * ((y / TILE_SIZE * tiles_per_row) - + (x / TILE_SIZE)); - unsigned texel_offset = 4 * (((y % TILE_SIZE) * TILE_SIZE) - + (x % TILE_SIZE)); spu_dcache_fetch_unaligned((qword *) & tmp, - spu.texture[unit].start + tile_offset + texel_offset, + texture_ea + tile_offset + texel_offset, 4); return spu_extract(tmp, 0); } +/** + * Get four texels from locations (x[0], y[0]), (x[1], y[1]) ... + */ static void get_four_texels(uint unit, vec_uint4 x, vec_uint4 y, vec_uint4 *texels) { @@ -76,7 +79,7 @@ get_four_texels(uint unit, vec_uint4 x, vec_uint4 y, vec_uint4 *texels) const qword offset_x = si_andi((qword) x, 0x1f); const qword offset_y = si_andi((qword) y, 0x1f); - const qword tiles_per_row = (qword) spu_splats(spu.texture[unit].width / TILE_SIZE); + const qword tiles_per_row = (qword) spu_splats(spu.texture[unit].tiles_per_row); const qword tile_size = (qword) spu_splats(sizeof(tile_t)); qword tile_offset = si_mpya((qword) tile_y, tiles_per_row, (qword) tile_x); @@ -97,6 +100,7 @@ get_four_texels(uint unit, vec_uint4 x, vec_uint4 y, vec_uint4 *texels) texture_ea + spu_extract(offset, 3), 4); } + /** * Get texture sample at texcoord. * XXX this is extremely primitive for now. @@ -126,17 +130,25 @@ sample_texture_bilinear(uint unit, vector float texcoord) vec_uint4 texels[4]; + /* setup texcoords for quad: + * +-----+-----+ + * |x0,y0|x1,y1| + * +-----+-----+ + * |x2,y2|x3,y3| + * +-----+-----+ + */ vec_uint4 x = spu_splats(spu_extract(itc, 0)); vec_uint4 y = spu_splats(spu_extract(itc, 1)); - x = spu_add(x, offset_x); y = spu_add(y, offset_y); + /* GL_REPEAT wrap mode: */ x = spu_and(x, spu.texture[unit].tex_size_x_mask); y = spu_and(y, spu.texture[unit].tex_size_y_mask); get_four_texels(unit, x, y, texels); + /* integer A8R8G8B8 to float texel conversion */ vector float texel00 = spu_unpack_A8R8G8B8(spu_extract(texels[0], 0)); vector float texel01 = spu_unpack_A8R8G8B8(spu_extract(texels[1], 0)); vector float texel10 = spu_unpack_A8R8G8B8(spu_extract(texels[2], 0)); |