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Diffstat (limited to 'src/mesa/pipe/cell/spu/spu_ztest.h')
| -rw-r--r-- | src/mesa/pipe/cell/spu/spu_ztest.h | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/src/mesa/pipe/cell/spu/spu_ztest.h b/src/mesa/pipe/cell/spu/spu_ztest.h deleted file mode 100644 index ce8ad003393..00000000000 --- a/src/mesa/pipe/cell/spu/spu_ztest.h +++ /dev/null @@ -1,135 +0,0 @@ -/************************************************************************** - * - * Copyright 2007 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. - * - **************************************************************************/ - - -/** - * Zbuffer/depth test code. - */ - - -#ifndef SPU_ZTEST_H -#define SPU_ZTEST_H - - -#ifdef __SPU__ -#include <spu_intrinsics.h> -#endif - - - -/** - * Perform Z testing for a 16-bit/value Z buffer. - * - * \param zvals vector of four fragment zvalues as floats - * \param zbuf ptr to vector of ushort[8] zbuffer values. Note that this - * contains the Z values for 2 quads, 8 pixels. - * \param x x coordinate of quad (only lsbit is significant) - * \param inMask indicates which fragments in the quad are alive - * \return new mask indicating which fragments are alive after ztest - */ -static INLINE vector unsigned int -spu_z16_test_less(vector float zvals, vector unsigned short *zbuf, - uint x, vector unsigned int inMask) -{ -#define ZERO 0x80 - vector unsigned int zvals_ui4, zbuf_ui4, mask; - - /* convert floats to uints in [0, 65535] */ - zvals_ui4 = spu_convtu(zvals, 32); /* convert to [0, 2^32] */ - zvals_ui4 = spu_rlmask(zvals_ui4, -16); /* right shift 16 */ - - /* XXX this conditional could be removed with a bit of work */ - if (x & 1) { - /* convert zbuffer values from ushorts to uints */ - /* gather lower four ushorts */ - zbuf_ui4 = spu_shuffle((vector unsigned int) *zbuf, - (vector unsigned int) *zbuf, - ((vector unsigned char) { - ZERO, ZERO, 8, 9, ZERO, ZERO, 10, 11, - ZERO, ZERO, 12, 13, ZERO, ZERO, 14, 15})); - /* mask = (zbuf_ui4 < zvals_ui4) ? ~0 : 0 */ - mask = spu_cmpgt(zbuf_ui4, zvals_ui4); - /* mask &= inMask */ - mask = spu_and(mask, inMask); - /* zbuf = mask ? zval : zbuf */ - zbuf_ui4 = spu_sel(zbuf_ui4, zvals_ui4, mask); - /* convert zbuffer values from uints back to ushorts, preserve lower 4 */ - *zbuf = (vector unsigned short) - spu_shuffle(zbuf_ui4, (vector unsigned int) *zbuf, - ((vector unsigned char) { - 16, 17, 18, 19, 20, 21, 22, 23, - 2, 3, 6, 7, 10, 11, 14, 15})); - } - else { - /* convert zbuffer values from ushorts to uints */ - /* gather upper four ushorts */ - zbuf_ui4 = spu_shuffle((vector unsigned int) *zbuf, - (vector unsigned int) *zbuf, - ((vector unsigned char) { - ZERO, ZERO, 0, 1, ZERO, ZERO, 2, 3, - ZERO, ZERO, 4, 5, ZERO, ZERO, 6, 7})); - /* mask = (zbuf_ui4 < zvals_ui4) ? ~0 : 0 */ - mask = spu_cmpgt(zbuf_ui4, zvals_ui4); - /* mask &= inMask */ - mask = spu_and(mask, inMask); - /* zbuf = mask ? zval : zbuf */ - zbuf_ui4 = spu_sel(zbuf_ui4, zvals_ui4, mask); - /* convert zbuffer values from uints back to ushorts, preserve upper 4 */ - *zbuf = (vector unsigned short) - spu_shuffle(zbuf_ui4, (vector unsigned int) *zbuf, - ((vector unsigned char) { - 2, 3, 6, 7, 10, 11, 14, 15, - 24, 25, 26, 27, 28, 29, 30, 31})); - } - return mask; -#undef ZERO -} - - -/** - * As above, but Zbuffer values as 32-bit uints - */ -static INLINE vector unsigned int -spu_z32_test_less(vector float zvals, vector unsigned int *zbuf_ptr, - vector unsigned int inMask) -{ - vector unsigned int zvals_ui4, mask, zbuf = *zbuf_ptr; - - /* convert floats to uints in [0, 0xffffffff] */ - zvals_ui4 = spu_convtu(zvals, 32); - /* mask = (zbuf < zvals_ui4) ? ~0 : 0 */ - mask = spu_cmpgt(zbuf, zvals_ui4); - /* mask &= inMask */ - mask = spu_and(mask, inMask); - /* zbuf = mask ? zval : zbuf */ - *zbuf_ptr = spu_sel(zbuf, zvals_ui4, mask); - - return mask; -} - - -#endif /* SPU_ZTEST_H */ |