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 | 207 |
1 files changed, 207 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 97f4c75849..bf393a9fb1 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler_util.c @@ -31,6 +31,8 @@ #include "radeon_compiler_util.h" +#include "radeon_compiler.h" +#include "radeon_dataflow.h" /** */ unsigned int rc_swizzle_to_writemask(unsigned int swz) @@ -46,6 +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, @@ -59,3 +146,123 @@ unsigned int rc_src_reads_dst_mask( } return dst_mask & rc_swizzle_to_writemask(src_swz); } + +unsigned int rc_source_type_swz(unsigned int swizzle, unsigned int channels) +{ + unsigned int chan; + unsigned int swz = RC_SWIZZLE_UNUSED; + unsigned int ret = RC_SOURCE_NONE; + + for(chan = 0; chan < channels; chan++) { + swz = GET_SWZ(swizzle, chan); + if (swz == RC_SWIZZLE_W) { + ret |= RC_SOURCE_ALPHA; + } else if (swz == RC_SWIZZLE_X || swz == RC_SWIZZLE_Y + || swz == RC_SWIZZLE_Z) { + ret |= RC_SOURCE_RGB; + } + } + return ret; +} + +unsigned int rc_source_type_mask(unsigned int mask) +{ + unsigned int ret = RC_SOURCE_NONE; + + if (mask & RC_MASK_XYZ) + ret |= RC_SOURCE_RGB; + + if (mask & RC_MASK_W) + ret |= RC_SOURCE_ALPHA; + + return ret; +} + +struct can_use_presub_data { + struct rc_src_register RemoveSrcs[3]; + unsigned int RGBCount; + unsigned int AlphaCount; +}; + +static void can_use_presub_read_cb( + void * userdata, + struct rc_instruction * inst, + rc_register_file file, + unsigned int index, + unsigned int mask) +{ + struct can_use_presub_data * d = userdata; + unsigned int src_type = rc_source_type_mask(mask); + unsigned int i; + + if (file == RC_FILE_NONE) + return; + + for(i = 0; i < 3; i++) { + if (d->RemoveSrcs[i].File == file + && d->RemoveSrcs[i].Index == index) { + src_type &= + ~rc_source_type_swz(d->RemoveSrcs[i].Swizzle, 4); + } + } + + if (src_type & RC_SOURCE_RGB) + d->RGBCount++; + + if (src_type & RC_SOURCE_ALPHA) + d->AlphaCount++; +} + +unsigned int rc_inst_can_use_presub( + struct rc_instruction * inst, + rc_presubtract_op presub_op, + unsigned int presub_writemask, + struct rc_src_register replace_reg, + struct rc_src_register presub_src0, + struct rc_src_register presub_src1) +{ + struct can_use_presub_data d; + unsigned int num_presub_srcs; + unsigned int presub_src_type = rc_source_type_mask(presub_writemask); + const struct rc_opcode_info * info = + rc_get_opcode_info(inst->U.I.Opcode); + + if (presub_op == RC_PRESUB_NONE) { + return 1; + } + + if (info->HasTexture) { + return 0; + } + + /* We can't use more than one presubtract value in an + * instruction, unless the two prsubtract operations + * are the same and read from the same registers. + * XXX For now we will limit instructions to only one presubtract + * value.*/ + if (inst->U.I.PreSub.Opcode != RC_PRESUB_NONE) { + return 0; + } + + memset(&d, 0, sizeof(d)); + d.RemoveSrcs[0] = replace_reg; + d.RemoveSrcs[1] = presub_src0; + d.RemoveSrcs[2] = presub_src1; + + rc_for_all_reads_mask(inst, can_use_presub_read_cb, &d); + + num_presub_srcs = rc_presubtract_src_reg_count(presub_op); + + if ((presub_src_type & RC_SOURCE_RGB) + && d.RGBCount + num_presub_srcs > 3) { + return 0; + } + + if ((presub_src_type & RC_SOURCE_ALPHA) + && d.AlphaCount + num_presub_srcs > 3) { + return 0; + } + + return 1; +} + |