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-- A script that compares a set of equivalent cmdstream captures from
-- various generations, looking for equivalencies between registers.
--
-- This would be run across a group of similar tests for various
-- generations, for example:
--
-- cffdump --script scripts/analyze.lua a320/quad-flat-*.rd a420/quad-flat-*.rd
--
-- This is done by comparing unique register values. Ie. for each
-- generation, find the set of registers that have different values
-- between equivalent draw calls.
local posix = require "posix"
io.write("Analyzing Data...\n")
-- results - table structure:
-- * [gpuname] - gpu
-- * tests
-- * [testname] - current test
-- * draws
-- * [1..n] - the draws
-- * primtype - the primitive type
-- * regs - table of values for draw
-- * [regbase] - regval
-- * regvals - table of unique values across all draws
-- * [regbase]
-- * [regval] - list of test names
-- * [1..n] - testname "." didx
local results = {}
local test = nil
local gpuname = nil
local testname = nil
-- srsly, no sparse table size() op?
function tblsz(tbl)
local n = 0;
for k,v in pairs(tbl) do
n = n + 1
end
return n
end
function start_cmdstream(name)
testname = posix.basename(name)
gpuname = posix.basename(posix.dirname(name))
--io.write("START: gpuname=" .. gpuname .. ", testname=" .. testname .. "\n");
local gpu = results[gpuname]
if gpu == nil then
gpu = {["tests"] = {}, ["regvals"] = {}}
results[gpuname] = gpu
end
test = {["draws"] = {}}
gpu["tests"][testname] = test
end
function draw(primtype, nindx)
-- RECTLIST is only used internally.. we want to ignore it for
-- now, although it could potentially be interesting to track
-- these separately (separating clear/restore/resolve) just to
-- figure out which registers are used for which..
if primtype == "DI_PT_RECTLIST" then
return
end
local regtbl = {}
local draw = {["primtype"] = primtype, ["regs"] = regtbl}
local didx = tblsz(test["draws"])
test["draws"][didx] = draw
-- populate current regs. For now just consider ones that have
-- been written.. maybe we need to make that configurable in
-- case it filters out too many registers.
for regbase=0,0xffff do
if regs.written(regbase) ~= 0 then
local regval = regs.val(regbase)
-- track reg vals per draw:
regtbl[regbase] = regval
-- also track which reg vals appear in which tests:
local uniq_regvals = results[gpuname]["regvals"][regbase]
if uniq_regvals == nil then
uniq_regvals = {}
results[gpuname]["regvals"][regbase] = uniq_regvals;
end
local drawlist = uniq_regvals[regval]
if drawlist == nil then
drawlist = {}
uniq_regvals[regval] = drawlist
end
table.insert(drawlist, testname .. "." .. didx)
end
end
-- TODO maybe we want to whitelist a few well known regs, for the
-- convenience of the code that runs at the end to analyze the data?
-- TODO also would be useful to somehow capture CP_SET_BIN..
end
function end_cmdstream()
test = nil
gpuname = nil
testname = nil
end
function print_draws(gpuname, gpu)
io.write(" " .. gpuname .. "\n")
for testname,test in pairs(gpu["tests"]) do
io.write(" " .. testname .. ", draws=" .. #test["draws"] .. "\n")
for didx,draw in pairs(test["draws"]) do
io.write(" " .. didx .. ": " .. draw["primtype"] .. "\n")
end
end
end
-- sort and concat a list of draw names to form a key which can be
-- compared to other drawlists to check for equality
-- TODO maybe we instead want a scheme that allows for some fuzzyness
-- in the matching??
function drawlistname(drawlist)
local name = nil
for idx,draw in pairs(drawlist) do
if name == nil then
name = draw
else
name = name .. ":" .. draw
end
end
return name
end
local rnntbl = {}
function dumpmatches(name)
for gpuname,gpu in pairs(results) do
local r = rnntbl[gpuname]
if r == nil then
io.write("loading rnn database: \n" .. gpuname)
r = rnn.init(gpuname)
rnntbl[gpuname] = r
end
for regbase,regvals in pairs(gpu["regvals"]) do
for regval,drawlist in pairs(regvals) do
local name2 = drawlistname(drawlist)
if name == name2 then
io.write(string.format(" %s:%s:\t%08x %s\n",
gpuname, rnn.regname(r, regbase),
regval, rnn.regval(r, regbase, regval)))
end
end
end
end
end
function finish()
-- drawlistnames that we've already dumped:
local dumped = {}
for gpuname,gpu in pairs(results) do
-- print_draws(gpuname, gpu)
for regbase,regvals in pairs(gpu["regvals"]) do
for regval,drawlist in pairs(regvals) do
local name = drawlistname(drawlist)
if dumped[name] == nil then
io.write("\n" .. name .. ":\n")
dumpmatches(name)
dumped[name] = 1
end
end
end
end
end
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