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16-shadowmaps.lua
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16-shadowmaps.lua
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package.cpath = "bin/?.dll"
local iup = require "iuplua"
local bgfx = require "bgfx"
local bgfxu = require "bgfx.util"
local util = require "util"
local math3d = require "math3d"
local settings = {
sizePwrTwo = 10,
coverageSpotL = 90.0,
spotOuterAngle = 45.0,
spotInnerAngle = 30.0,
stencilPack = true,
fovXAdjust = 0.0,
fovYAdjust = 0.0,
stabilize = true,
numSplits = 4,
splitDistribution = 0.6,
updateLights = true,
updateScene = true,
lightType = "SpotLight",
depthImpl = "InvZ",
drawDepthBuffer = false,
depthValuePow = 1.0,
smImpl = "Hard",
bias = 0.0,
normalOffset = 0.0,
near = 1.0,
far = 200.0,
xOffset = 1.0,
yOffset = 1.0,
doBlur = true,
customParam0 = 0.5,
customParam1 = 500,
showSmCoverage = false,
}
local RENDERVIEW_SHADOWMAP_0_ID =1
local RENDERVIEW_SHADOWMAP_1_ID =2
local RENDERVIEW_SHADOWMAP_2_ID =3
local RENDERVIEW_SHADOWMAP_3_ID =4
local RENDERVIEW_SHADOWMAP_4_ID =5
local RENDERVIEW_VBLUR_0_ID =6
local RENDERVIEW_HBLUR_0_ID =7
local RENDERVIEW_VBLUR_1_ID =8
local RENDERVIEW_HBLUR_1_ID =9
local RENDERVIEW_VBLUR_2_ID =10
local RENDERVIEW_HBLUR_2_ID =11
local RENDERVIEW_VBLUR_3_ID =12
local RENDERVIEW_HBLUR_3_ID =13
local RENDERVIEW_DRAWSCENE_0_ID =14
local RENDERVIEW_DRAWSCENE_1_ID =15
local RENDERVIEW_DRAWDEPTH_0_ID =16
local RENDERVIEW_DRAWDEPTH_1_ID =17
local RENDERVIEW_DRAWDEPTH_2_ID =18
local RENDERVIEW_DRAWDEPTH_3_ID =19
local GREEN = 1
local YELLOW =2
local BLUE =3
local RED =4
local ctx = {
canvas = iup.canvas {},
}
do
local radios = {}
local function radio(name)
local def = assert(settings[name])
return function(init)
local map = assert(radios[name])
local ret = iup.radio(init)
local p = assert(map[def])
ret.value = p.ctrl
return ret
end
end
local sliders = {}
local function slider(key, title, min, max, fmt)
local value = assert(settings[key])
local integer = math.type(value) == "integer"
local tv = value
if fmt then
if fmt == "%p" then
tv = string.format("%d",2^value)
else
tv = string.format(fmt, value)
end
end
local label = iup.label { title = tv , size = "30" }
local val = iup.val {
min = min,
max = max,
value = value,
valuechanged_cb = function (self)
local v = tonumber(self.value)
if integer then
v = math.floor(v)
settings[key] = v
if fmt == "%p" then
label.title = string.format("%d",2^v)
else
label.title = string.format("%d",v)
end
else
settings[key] = v
label.title = string.format(fmt or "%.2f",v)
end
end,
}
sliders[key] = val
return iup.hbox {
iup.label { title = title .. " : " },
val,
label,
}
end
local settings_default = {
SpotLight_InvZ_Hard = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.0035, 0, 0.01 },
normalOffset = { 0.0012, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 500, 1, 1000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Single_InvZ_Hard",
},
SpotLight_InvZ_PCF = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,99 },
far = { 250, 100, 2000 },
bias = { 0.007, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 500, 1, 1000 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Single_InvZ_PCF",
},
SpotLight_InvZ_VSM = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.0045, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.02, 0, 0.04 },
customParam1 = { 450, 1, 1000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_VSM",
progDraw = "colorLighting_Single_InvZ_VSM",
},
SpotLight_InvZ_ESM = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 3,1,10 },
far = { 250, 100, 2000 },
bias = { 0.02, 0, 0.3 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 9000, 1, 15000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Single_InvZ_ESM",
},
SpotLight_Linear_Hard = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.0025, 0, 0.01 },
normalOffset = { 0.0012, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 500, 1, 1000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Single_Linear_Hard",
},
SpotLight_Linear_PCF = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,99 },
far = { 250, 100, 2000 },
bias = { 0.0025, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 2000, 1, 2000 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Single_Linear_PCF",
},
SpotLight_Linear_VSM = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.006, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.02, 0, 1 },
customParam1 = { 300, 1, 1500 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_VSM",
progDraw = "colorLighting_Single_Linear_VSM",
},
SpotLight_Linear_ESM = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.0055, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 2500, 1, 5000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Single_Linear_ESM",
},
PointLight_InvZ_Hard = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.006, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 50, 1, 300 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Omni_InvZ_Hard",
},
PointLight_InvZ_PCF = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,99 },
far = { 250, 100, 2000 },
bias = { 0.004, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 50, 1, 300 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Omni_InvZ_PCF",
},
PointLight_InvZ_VSM = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 8,1,10 },
far = { 250, 100, 2000 },
bias = { 0.001, 0, 0.05 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.02, 0, 0.04 },
customParam1 = { 450, 1, 900 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_InvZ_VSM",
progDraw = "colorLighting_Omni_InvZ_VSM",
},
PointLight_InvZ_ESM = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 3,1,10 },
far = { 250, 100, 2000 },
bias = { 0.035, 0, 0.1 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 9000, 1, 15000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Omni_InvZ_ESM",
},
PointLight_Linear_Hard = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.003, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 120, 1, 300 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Omni_Linear_Hard",
},
PointLight_Linear_PCF = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,99 },
far = { 250, 100, 2000 },
bias = { 0.0035, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 120, 1, 300 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Omni_Linear_PCF",
},
PointLight_Linear_VSM = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.006, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.02, 0, 1 },
customParam1 = { 400, 1, 900 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_Linear_VSM",
progDraw = "colorLighting_Omni_Linear_VSM",
},
PointLight_Linear_ESM = {
sizePwrTwo = { 12, 9, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 250, 100, 2000 },
bias = { 0.007, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 8000, 1, 15000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.25, 0, 2 },
yOffset = { 0.25, 0, 2 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Omni_Linear_ESM",
},
DirectionalLight_InvZ_Hard = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 10, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.0012, 0, 0.01 },
normalOffset = { 0.001, 0, 0.05 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 200, 1, 400 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 1 },
yOffset = { 0.2, 0, 1 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Cascade_InvZ_Hard",
},
DirectionalLight_InvZ_PCF = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,99 },
far = { 550, 100, 2000 },
bias = { 0.0012, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 200, 1, 400 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Cascade_InvZ_PCF",
},
DirectionalLight_InvZ_VSM = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.004, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.02, 0, 0.04 },
customParam1 = { 2500, 1, 5000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 2 },
yOffset = { 0.2, 0, 2 },
progPack = "packDepth_InvZ_VSM",
progDraw = "colorLighting_Cascade_InvZ_VSM",
},
DirectionalLight_InvZ_ESM = {
sizePwrTwo = { 10, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.004, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 9500, 1, 15000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 1 },
yOffset = { 0.2, 0, 1 },
progPack = "packDepth_InvZ_RGBA",
progDraw = "colorLighting_Cascade_InvZ_ESM",
},
DirectionalLight_Linear_Hard = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.0012, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 500, 1, 1000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 1 },
yOffset = { 0.2, 0, 1 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Cascade_Linear_Hard",
},
DirectionalLight_Linear_PCF = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,99 },
far = { 550, 100, 2000 },
bias = { 0.0012, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 200, 1, 400 },
xNum = { 2, 0, 8 },
yNum = { 2, 0, 8 },
xOffset = { 1, 0, 3 },
yOffset = { 1, 0, 3 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Cascade_Linear_PCF",
},
DirectionalLight_Linear_VSM = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.004, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.02, 0, 0.04 },
customParam1 = { 2500, 1, 5000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 1 },
yOffset = { 0.2, 0, 1 },
progPack = "packDepth_Linear_VSM",
progDraw = "colorLighting_Cascade_Linear_VSM",
},
DirectionalLight_Linear_ESM = {
sizePwrTwo = { 11, 7, 12, "%p"},
depthValuePow = { 1, 1, 20 },
near = { 1,1,10 },
far = { 550, 100, 2000 },
bias = { 0.004, 0, 0.01 },
normalOffset = { 0.001, 0, 0.04 },
customParam0 = { 0.7, 0, 1 },
customParam1 = { 9500, 1, 15000 },
xNum = { 2, 0, 4 },
yNum = { 2, 0, 4 },
xOffset = { 0.2, 0, 1 },
yOffset = { 0.2, 0, 1 },
progPack = "packDepth_Linear_RGBA",
progDraw = "colorLighting_Cascade_Linear_ESM",
},
}
-- export
function update_default_settings()
local key = string.format("%s_%s_%s", settings.lightType , settings.depthImpl, settings.smImpl)
local s = assert(settings_default[key])
for key, values in pairs(s) do
local ctrl = sliders[key]
if ctrl then
local v, min, max , fmt = table.unpack(values)
local value = v
if fmt then
if fmt == "%p" then
value = string.format("%d", 2^v)
else
value = string.format(fmt, v)
end
end
ctrl.min = min
ctrl.max = max
ctrl.value = value
settings[key] = v
else
if type(values) == "table" then
settings[key] = values[1]
else
settings[key] = values
end
end
end
end
local function radio_choice(title, key, type, sub, func)
local map = radios[key]
if not map then
map = {}
radios[key] = map
end
if func then
func(settings[key] == type)
end
local c = iup.toggle {
title = title,
action = function(self, v)
if v == 1 then
if map.__pannel then
map.__pannel.value = sub
end
settings[key] = type
end
if func then
func(v==1)
end
update_default_settings()
end
}
map[type] = { ctrl = c, pannel = sub }
return c
end
local function checkbox(key, title, func)
local value = settings[key]
assert(type(value) == "boolean")
if func then
func(value)
end
return iup.toggle {
title = title,
value = value and "ON" or "OFF",
action = function (_, v)
settings[key] = (v == 1)
if func then
func(v==1)
end
end
}
end
local spot_sub = iup.vbox {
slider("coverageSpotL", "Shadow map area", 45, 120),
slider("spotOuterAngle", "Spot outer cone", 0, 91),
slider("spotInnerAngle", "Spot inner cone", 0, 90),
}
local point_sub = iup.vbox {
checkbox("stencilPack", "Stencil pack"),
slider("fovXAdjust", "Fov X adjust", -20.0, 20.0),
slider("fovYAdjust", "Fov Y adjust", -20.0, 20.0),
}
local directional_sub = iup.vbox {
checkbox("stabilize", "Stabilize cascades"),
slider("numSplits", "Cascade splits", 1, 4),
slider("splitDistribution", "Cascade distribution", 0, 1),
}
local function sub_pannel(key)
local def = assert(settings[key])
return function(init)
local map = assert(radios[key])
local c = iup.zbox(init)
map.__pannel = c
c.value = map[def].pannel
return c
end
end
local light = iup.frame {
title = "Light",
iup.vbox {
radio "lightType" {
iup.hbox {
radio_choice("Spot light", "lightType", "SpotLight", spot_sub),
radio_choice("Point light", "lightType", "PointLight", point_sub),
radio_choice("Directional light", "lightType", "DirectionalLight", directional_sub),
},
},
sub_pannel "lightType" {
spot_sub,
point_sub,
directional_sub,
},
checkbox("showSmCoverage", "Show shadow map coverage"),
slider("sizePwrTwo", "Shadow map resolution", 7, 12, "%p"),
NORMALIZESIZE = "HORIZONTAL",
},
}
local dvp = slider("depthValuePow", "Depth value pow", 1, 20)
local hard_sub = iup.vbox {}
local pcf_sub = iup.vbox {
slider("xOffset", "X Offset", 0, 3),
slider("yOffset", "Y Offset", 0, 3),
}
local vsm_sub = iup.vbox {
slider("customParam0", "Min variance", 0, 1 ),
slider("customParam1", "Depth multiplier", 1, 1000 ),
checkbox("doBlur", "Blur shadow map"),
slider("xOffset", "X Offset", 0, 3),
slider("yOffset", "Y Offset", 0, 3),
}
local esm_sub = iup.vbox {
slider("customParam0", "ESM Hardness", 0, 1 ),
slider("customParam1", "Depth multiplier", 1, 1000 ),
checkbox("doBlur", "Blur shadow map"),
slider("xOffset", "X Offset", 0, 3),
slider("yOffset", "Y Offset", 0, 3),
}
local settings = iup.frame {
title = "Settings",
iup.vbox {
iup.hbox {
checkbox("updateLights", "Update lights"),
checkbox("updateScene", "Update scene"),
checkbox("drawDepthBuffer", "Draw depth", function (v) dvp.visible = v and "yes" or "no" end),
},
dvp,
radio "lightType" {
iup.hbox {
iup.label { title = "Shadow map depth:" },
radio_choice("InvZ", "depthImpl", "InvZ"),
radio_choice("Linear", "depthImpl", "Linear"),
},
},
radio "smImpl" {
iup.hbox {
iup.label { title = "Shadow Map imp" },
radio_choice("Hard", "smImpl", "Hard", hard_sub),
radio_choice("PCF", "smImpl", "PCF", pcf_sub),
radio_choice("VSM", "smImpl", "VSM", vsm_sub),
radio_choice("ESM", "smImpl", "ESM", esm_sub),
},
},
slider("bias", "Bias", 0, 0.01, "%.4f"),
slider("normalOffset","Normal offset", 0, 0.05,"%.3f"),
slider("near", "Near plane", 1, 10),
slider("far", "Far plane", 200, 2000, "%.0f"),
sub_pannel "smImpl" {
hard_sub,
pcf_sub,
vsm_sub,
esm_sub,
},
},
}
local leftpannel = iup.hbox {
iup.vbox {
light,
settings,
iup.hbox { size = "100" }, -- for min hsize
NORMALIZESIZE = "HORIZONTAL",
},
}
_G.dlg = iup.dialog {
iup.hbox {
leftpannel,
ctx.canvas,
margin = "2x2",
},
title = "16-shadowmaps",
size = "HALF",
}
end
-----------------------------------------------
local Uniforms = {}
local function init_Uniforms()
local function univ(name, x,y,z,w)
z = z or 0
w = w or 0
Uniforms[name] = math3d.ref(math3d.vector(x,y,z,w))
end
Uniforms.ambientPass = 1
Uniforms.lightingPass = 1
-- m_ambientPass m_lightingPass;
univ("params0", 1,1)
-- m_shadowMapBias m_shadowMapOffset m_shadowMapParam0 m_shadowMapParam1
Uniforms.shadowMapBias = 0.003
Uniforms.shadowMapOffset = 0
Uniforms.shadowMapParam0 = 0.5
Uniforms.shadowMapParam1 = 1
univ("params1", 0.003, 0, 0.5, 1)
Uniforms.depthValuePow = 1
Uniforms.showSmCoverage = 1
Uniforms.shadowMapTexelSize = 1/512
univ("params2", 1,1, 1/512)
univ("csmFarDistances", 30, 90, 180, 1000)
univ("tetraNormalGreen", 0, -0.57735026, 0.81649661)
univ("tetraNormalYellow", 0, -0.57735026, -0.81649661)
univ("tetraNormalBlue", -0.81649661, 0.57735026, 0)
univ("tetraNormalRed", 0.81649661, 0.57735026, 0)
Uniforms.XNum = 2
Uniforms.YNum = 2
Uniforms.XOffset = 10.0/512
Uniforms.YOffset = 10.0/512
-- m_XNum m_YNum m_XOffset m_YOffset
univ("paramsBlur", 2,2, 10/512, 10/512)
local function uni(name, t)
Uniforms[name] = bgfx.create_uniform(name, t or "v4")
end
uni "u_params0"
uni "u_params1"
uni "u_params2"
uni "u_color"
uni "u_smSamplingParams"
uni "u_csmFarDistances"
uni("u_lightMtx", "m4")
uni "u_tetraNormalGreen"
uni "u_tetraNormalYellow"
uni "u_tetraNormalBlue"
uni "u_tetraNormalRed"
uni("u_shadowMapMtx0", "m4")
uni("u_shadowMapMtx1", "m4")
uni("u_shadowMapMtx2", "m4")
uni("u_shadowMapMtx3", "m4")
uni "u_lightPosition"
uni "u_lightAmbientPower"
uni "u_lightDiffusePower"
uni "u_lightSpecularPower"
uni "u_lightSpotDirectionInner"
uni "u_lightAttenuationSpotOuter"
uni "u_materialKa"
uni "u_materialKd"
uni "u_materialKs"
Uniforms.materialPtr = false -- reserved
Uniforms.lightPtr = false
Uniforms.colorPtr = false
Uniforms.lightMtxPtr = false
Uniforms.shadowMapMtx0 = false
Uniforms.shadowMapMtx1 = false
Uniforms.shadowMapMtx2 = false
Uniforms.shadowMapMtx3 = false
setmetatable(Uniforms, { __newindex = function(t,k,v) error(k) end }) -- readonly
end
-- Call this once at initialization.
local function submitConstUniforms()
bgfx.set_uniform(Uniforms.u_tetraNormalGreen, Uniforms.tetraNormalGreen)
bgfx.set_uniform(Uniforms.u_tetraNormalYellow, Uniforms.tetraNormalYellow)
bgfx.set_uniform(Uniforms.u_tetraNormalBlue, Uniforms.tetraNormalBlue)
bgfx.set_uniform(Uniforms.u_tetraNormalRed, Uniforms.tetraNormalRed)
end
-- Call this once per frame.
local function submitPerFrameUniforms()
Uniforms.params1.v = { Uniforms.shadowMapBias,
Uniforms.shadowMapOffset,
Uniforms.shadowMapParam0,
Uniforms.shadowMapParam1 }
bgfx.set_uniform(Uniforms.u_params1, Uniforms.params1)
Uniforms.params2.v = {
Uniforms.depthValuePow,
Uniforms.showSmCoverage,
Uniforms.shadowMapTexelSize }
bgfx.set_uniform(Uniforms.u_params2, Uniforms.params2)
Uniforms.paramsBlur.v = {
Uniforms.XNum,
Uniforms.YNum,
Uniforms.XOffset,
Uniforms.YOffset }
bgfx.set_uniform(Uniforms.u_smSamplingParams, Uniforms.paramsBlur)
bgfx.set_uniform(Uniforms.u_csmFarDistances, Uniforms.csmFarDistances)
bgfx.set_uniform(Uniforms.u_materialKa, Uniforms.materialPtr.ambient)
bgfx.set_uniform(Uniforms.u_materialKd, Uniforms.materialPtr.diffuse)
bgfx.set_uniform(Uniforms.u_materialKs, Uniforms.materialPtr.specular)
bgfx.set_uniform(Uniforms.u_lightPosition, Uniforms.lightPtr.position_viewSpace)
bgfx.set_uniform(Uniforms.u_lightAmbientPower, Uniforms.lightPtr.ambient)
bgfx.set_uniform(Uniforms.u_lightDiffusePower, Uniforms.lightPtr.diffuse)
bgfx.set_uniform(Uniforms.u_lightSpecularPower, Uniforms.lightPtr.specular)
bgfx.set_uniform(Uniforms.u_lightSpotDirectionInner, Uniforms.lightPtr.spotdirection_viewSpace)
bgfx.set_uniform(Uniforms.u_lightAttenuationSpotOuter, Uniforms.lightPtr.attenuation)
end
-- Call this before each draw call.
local function submitPerDrawUniforms()
bgfx.set_uniform(Uniforms.u_shadowMapMtx0, Uniforms.shadowMapMtx0)
bgfx.set_uniform(Uniforms.u_shadowMapMtx1, Uniforms.shadowMapMtx1)
bgfx.set_uniform(Uniforms.u_shadowMapMtx2, Uniforms.shadowMapMtx2)
bgfx.set_uniform(Uniforms.u_shadowMapMtx3, Uniforms.shadowMapMtx3)
Uniforms.params0.v = { Uniforms.ambientPass, Uniforms.lightingPass, 0, 0 }
bgfx.set_uniform(Uniforms.u_params0, Uniforms.params0)
bgfx.set_uniform(Uniforms.u_lightMtx, Uniforms.lightMtxPtr)
bgfx.set_uniform(Uniforms.u_color, Uniforms.colorPtr)
end
-- render state
local s_renderState = {
Default = {
state = bgfx.make_state {
WRITE_MASK = "RGBAZ",
DEPTH_TEST = "LESS",
CULL = "CCW",
MSAA = true,
-- BLEND_FACTOR = 0xffffffff,
},
},
ShadowMap_PackDepth = {
state = bgfx.make_state {
WRITE_MASK = "RGBAZ",
DEPTH_TEST = "LESS",
CULL = "CCW",
MSAA = true,
},
},
ShadowMap_PackDepthHoriz = {
state = bgfx.make_state {
WRITE_MASK = "RGBAZ",
DEPTH_TEST = "LESS",
CULL = "CCW",
MSAA = true,
},
fstencil = bgfx.make_stencil {
TEST = "EQUAL",
FUNC_REF = 1,
FUNC_RMASK = 0xff,
OP_FAIL_S = "KEEP",
OP_FAIL_Z = "KEEP",
OP_PASS_Z = "KEEP",
},
},
ShadowMap_PackDepthVert = {
state = bgfx.make_state {
WRITE_MASK = "RGBAZ",
DEPTH_TEST = "LESS",
CULL = "CCW",
MSAA = true,
},
fstencil = bgfx.make_stencil {
TEST = "EQUAL",
FUNC_REF = 0,
FUNC_RMASK = 0xff,
OP_FAIL_S = "KEEP",
OP_FAIL_Z = "KEEP",
OP_PASS_Z = "KEEP",
},
},
Custom_BlendLightTexture = {
state = bgfx.make_state {
WRITE_MASK = "RGBAZ",
DEPTH_TEST = "LESS",
BLEND_FUNC = "sS", -- BGFX_STATE_BLEND_SRC_COLOR, BGFX_STATE_BLEND_INV_SRC_COLOR
CULL = "CCW",
MSAA = true,
},
},
Custom_DrawPlaneBottom = {
state = bgfx.make_state {
WRITE_MASK = "RGB",
CULL = "CW",
MSAA = true,
},
},
}
local Programs = {}
local function init_Programs()
local function prog(name, vs, fs)
fs = fs or vs
vs = "vs_shadowmaps_" .. vs
fs = "fs_shadowmaps_" .. fs
Programs[name] = util.programLoad(vs, fs)
end
--misc
prog("black", "color", "color_black")
prog("texture", "texture")
prog("colorTexture", "color_texture")
--blur
prog("vblur_RGBA", "vblur")
prog("hblur_RGBA", "hblur")
prog("vblur_VSM", "vblur", "vblur_vsm")
prog("hblur_VSM", "hblur", "hblur_vsm")
--draw depth
prog("drawDepth_RGBA", "unpackdepth")
prog("drawDepth_VSM", "unpackdepth", "unpackdepth_vsm")
-- Pack depth.
prog("packDepth_InvZ_RGBA", "packdepth")
prog("packDepth_InvZ_VSM", "packdepth", "packdepth_vsm")
prog("packDepth_Linear_RGBA", "packdepth_linear")
prog("packDepth_Linear_VSM", "packdepth_linear", "packdepth_vsm_linear")
-- Color lighting.
prog("colorLighting_Single_InvZ_Hard", "color_lighting", "color_lighting_hard")
prog("colorLighting_Single_InvZ_PCF", "color_lighting", "color_lighting_pcf")
prog("colorLighting_Single_InvZ_VSM", "color_lighting", "color_lighting_vsm")
prog("colorLighting_Single_InvZ_ESM", "color_lighting", "color_lighting_esm")
prog("colorLighting_Single_Linear_Hard", "color_lighting_linear", "color_lighting_hard_linear")
prog("colorLighting_Single_Linear_PCF", "color_lighting_linear", "color_lighting_pcf_linear")
prog("colorLighting_Single_Linear_VSM", "color_lighting_linear", "color_lighting_vsm_linear")
prog("colorLighting_Single_Linear_ESM", "color_lighting_linear", "color_lighting_esm_linear")
prog("colorLighting_Omni_InvZ_Hard", "color_lighting_omni", "color_lighting_hard_omni")
prog("colorLighting_Omni_InvZ_PCF", "color_lighting_omni", "color_lighting_pcf_omni")
prog("colorLighting_Omni_InvZ_VSM", "color_lighting_omni", "color_lighting_vsm_omni")
prog("colorLighting_Omni_InvZ_ESM", "color_lighting_omni", "color_lighting_esm_omni")
prog("colorLighting_Omni_Linear_Hard", "color_lighting_linear_omni", "color_lighting_hard_linear_omni")
prog("colorLighting_Omni_Linear_PCF", "color_lighting_linear_omni", "color_lighting_pcf_linear_omni")
prog("colorLighting_Omni_Linear_VSM", "color_lighting_linear_omni", "color_lighting_vsm_linear_omni")
prog("colorLighting_Omni_Linear_ESM", "color_lighting_linear_omni", "color_lighting_esm_linear_omni")
prog("colorLighting_Cascade_InvZ_Hard", "color_lighting_csm", "color_lighting_hard_csm")
prog("colorLighting_Cascade_InvZ_PCF", "color_lighting_csm", "color_lighting_pcf_csm")
prog("colorLighting_Cascade_InvZ_VSM", "color_lighting_csm", "color_lighting_vsm_csm")
prog("colorLighting_Cascade_InvZ_ESM", "color_lighting_csm", "color_lighting_esm_csm")
prog("colorLighting_Cascade_Linear_Hard", "color_lighting_linear_csm", "color_lighting_hard_linear_csm")
prog("colorLighting_Cascade_Linear_PCF", "color_lighting_linear_csm", "color_lighting_pcf_linear_csm")
prog("colorLighting_Cascade_Linear_VSM", "color_lighting_linear_csm", "color_lighting_vsm_linear_csm")
prog("colorLighting_Cascade_Linear_ESM", "color_lighting_linear_csm", "color_lighting_esm_linear_csm")
end