diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c')
-rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c b/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c index 2b8d284ce9..bf393a9fb1 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c @@ -48,6 +48,91 @@ unsigned int rc_swizzle_to_writemask(unsigned int swz) return mask; } +rc_swizzle get_swz(unsigned int swz, rc_swizzle idx) +{ + if (idx & 0x4) + return idx; + return GET_SWZ(swz, idx); +} + +unsigned int combine_swizzles4(unsigned int src, + rc_swizzle swz_x, rc_swizzle swz_y, rc_swizzle swz_z, rc_swizzle swz_w) +{ + unsigned int ret = 0; + + ret |= get_swz(src, swz_x); + ret |= get_swz(src, swz_y) << 3; + ret |= get_swz(src, swz_z) << 6; + ret |= get_swz(src, swz_w) << 9; + + return ret; +} + +unsigned int combine_swizzles(unsigned int src, unsigned int swz) +{ + unsigned int ret = 0; + + ret |= get_swz(src, GET_SWZ(swz, RC_SWIZZLE_X)); + ret |= get_swz(src, GET_SWZ(swz, RC_SWIZZLE_Y)) << 3; + ret |= get_swz(src, GET_SWZ(swz, RC_SWIZZLE_Z)) << 6; + ret |= get_swz(src, GET_SWZ(swz, RC_SWIZZLE_W)) << 9; + + return ret; +} + +/** + * @param mask Must be either RC_MASK_X, RC_MASK_Y, RC_MASK_Z, or RC_MASK_W + */ +rc_swizzle rc_mask_to_swizzle(unsigned int mask) +{ + switch (mask) { + case RC_MASK_X: return RC_SWIZZLE_X; + case RC_MASK_Y: return RC_SWIZZLE_Y; + case RC_MASK_Z: return RC_SWIZZLE_Z; + case RC_MASK_W: return RC_SWIZZLE_W; + } + return RC_SWIZZLE_UNUSED; +} + +/* Reorder mask bits according to swizzle. */ +unsigned swizzle_mask(unsigned swizzle, unsigned mask) +{ + unsigned ret = 0; + for (unsigned chan = 0; chan < 4; ++chan) { + unsigned swz = GET_SWZ(swizzle, chan); + if (swz < 4) + ret |= GET_BIT(mask, swz) << chan; + } + return ret; +} + +/** + * Left multiplication of a register with a swizzle + */ +struct rc_src_register lmul_swizzle(unsigned int swizzle, struct rc_src_register srcreg) +{ + struct rc_src_register tmp = srcreg; + int i; + tmp.Swizzle = 0; + tmp.Negate = 0; + for(i = 0; i < 4; ++i) { + rc_swizzle swz = GET_SWZ(swizzle, i); + if (swz < 4) { + tmp.Swizzle |= GET_SWZ(srcreg.Swizzle, swz) << (i*3); + tmp.Negate |= GET_BIT(srcreg.Negate, swz) << i; + } else { + tmp.Swizzle |= swz << (i*3); + } + } + return tmp; +} + +void reset_srcreg(struct rc_src_register* reg) +{ + memset(reg, 0, sizeof(struct rc_src_register)); + reg->Swizzle = RC_SWIZZLE_XYZW; +} + unsigned int rc_src_reads_dst_mask( rc_register_file src_file, unsigned int src_idx, |