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-- Parse cmdstream dump and check for common errors
-- 1) Check for overflowing HLSQ_xS_CNTL.CONSTLEN
-- 2) Check for constant uploades that overwrite each other. The
-- range checking is reset on each draw, since it is a valid
-- use-case to do partial constant upload. But if we see two
-- CP_LOAD_STATE* that overwrite the same range of constants
-- within the same draw, that is almost certainly unintentional.
--
-- TODO add more checks
-- TODO maybe some parts could be shared across
-- different generations
--local posix = require "posix"
function printf(fmt, ...)
return io.write(string.format(fmt, ...))
end
function dbg(fmt, ...)
--printf(fmt, ...)
end
stages = {
"SB6_VS_SHADER",
"SB6_HS_SHADER",
"SB6_DS_SHADER",
"SB6_GS_SHADER",
"SB6_FS_SHADER",
"SB6_CS_SHADER",
}
-- maps shader stage to HLSQ_xS_CNTL register name:
cntl_regs = {
["SB6_VS_SHADER"] = "HLSQ_VS_CNTL",
["SB6_HS_SHADER"] = "HLSQ_HS_CNTL",
["SB6_DS_SHADER"] = "HLSQ_DS_CNTL",
["SB6_GS_SHADER"] = "HLSQ_GS_CNTL",
["SB6_FS_SHADER"] = "HLSQ_FS_CNTL",
["SB6_CS_SHADER"] = "HLSQ_CS_CNTL",
}
-- initialize constant updated ranges:
-- constranges[stagename] -> table of offsets that have been uploaded
constranges = {}
function reset_constranges()
for i,stage in ipairs(stages) do
constranges[stage] = {}
end
end
reset_constranges()
printf("Checking cmdstream...\n")
local r = rnn.init("a630")
function draw(primtype, nindx)
printf("draw!\n")
-- reset ranges of uploaded consts on each draw:
reset_constranges()
end
function CP_LOAD_STATE6(pkt, size)
if tostring(pkt[0].STATE_TYPE) ~= "ST6_CONSTANTS" then
return
end
dbg("got CP_LOAD_STATE6\n")
stage = tostring(pkt[0].STATE_BLOCK)
max = pkt[0].DST_OFF + pkt[0].NUM_UNIT
cntl_reg = cntl_regs[stage]
dbg("looking for %s.. max=%d vs %d\n", cntl_reg, max, r[cntl_reg].CONSTLEN)
if max > r[cntl_reg].CONSTLEN then
printf("ERROR: invalid max constant offset for stage %s: %d vs %d\n", stage, max, r[cntl_reg].CONSTLEN)
end
end
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