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assembler/vs/validator: only count temp addresses for macro operations

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This commit is contained in:
Zack Buhman 2025-10-20 20:44:57 -05:00
parent 44dd480549
commit 4777be84d4
3 changed files with 23 additions and 23 deletions
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4
drm/Makefile
View File

@ -9,8 +9,8 @@ LDFLAGS += $(shell pkg-config --libs libdrm) -lm
%: %.c
$(CC) $(ARCH) $(CFLAGS) $(LDFLAGS) $(OPT) $< -o $@
%.inc: %.asm
PYTHONPATH=../regs/ python -m assembler $< > $@
%.vs.inc: %.vs.asm
PYTHONPATH=../regs/ python -m assembler.vs $< > $@
clean:
find . -type f ! -name "*.*" -delete

34
drm/rotate.vs.asm
View File

@ -1,18 +1,18 @@
; CONST[0] = {0.159155, 0.5, 6.283185, -3.141593}
; CONST[1] = {rotate, _, _, _}
# CONST[0] = {0.159155, 0.5, 6.283185, -3.141593}
# CONST[1] = {rotate, _, _, _}
; each instruction is only allowed to use a single unique `const` address
;
; instructions may use multiple `temp` addresses, so const[1] is moved to
; temp[0]:
;
# each instruction is only allowed to use a single unique `const` address
#
# instructions may use multiple `temp` addresses, so const[1] is moved to
# temp[0]:
#
temp[0].x = VE_ADD const[1].x___ const[1].0___
; ME_SIN and ME_COS are clamped to the range -π to +π prior to the sin/cos
; calculation.
;
; This 3-instruction sequence linearly remaps the range [-∞,+∞] to [-π,+π]
# ME_SIN and ME_COS are clamped to the range -π to +π prior to the sin/cos
# calculation.
#
# This 3-instruction sequence linearly remaps the range [-∞,+∞] to [-π,+π]
temp[1].x = VE_MAD temp[0].x___ const[0].x___ const[0].y___
temp[2].x = VE_FRC temp[1].x___
temp[3].x = VE_MAD temp[2].x___ const[0].z___ const[0].w___
@ -20,11 +20,11 @@ temp[3].x = VE_MAD temp[2].x___ const[0].z___ const[0].w___
temp[4].x = ME_SIN temp[3].___x
temp[4].y = ME_COS temp[3].___x
; with sin and cos calculated, this now ordinary two-dimensional rotation:
;
; x = position.x * cost - position.y * sint
; y = position.x * sint + position.y * cost
; z = 0
; w = 1
# with sin and cos calculated, this now ordinary two-dimensional rotation:
#
# x = position.x * cost - position.y * sint
# y = position.x * sint + position.y * cost
# z = 0
# w = 1
temp[5].xy = VE_MUL input[0].yy__ temp[4].xy__
out[0].xyzw = VE_MAD input[0].xx01 temp[4].yx01 temp[5].-xy00

8
regs/assembler/vs/validator.py
View File

@ -1,15 +1,15 @@
from assembler.vs.keywords import ME, VE, macro_vector_operations
from assembler.vs.keywords import KW, ME, VE, macro_vector_operations
class ValidatorError(Exception):
pass
def validate_instruction(ins):
addresses = len(set(
temp_addresses = len(set(
source.offset
for source in [ins.source0, ins.source1, ins.source2]
if source is not None
if (source is not None and source.type == KW.temporary)
))
if addresses > 2:
if temp_addresses > 2:
if type(ins.destination_op.opcode) is not VE:
raise ValidatorError("too many addresses for non-VE instruction", ins)
if ins.destination_op.opcode.name not in {b"VE_MULTIPLYX2_ADD", b"VE_MULTIPLY_ADD"}: