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Converted code for Shader:send from Lua to C++

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Alex Szpakowski
2013-05-21 20:41:26 -03:00
parent 89265107ea
commit 123889dfed
4 changed files with 89 additions and 208 deletions
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src/scripts/graphics.lua
-68
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@@ -1452,72 +1452,4 @@ void main() {
if #lines == 1 then return message end
return table_concat(lines, "\n")
end
-- helper to transform a matrix from {{a,b,c}, {d,e,f}, ...} to
-- {a, b, c, d, e, f, ...}
local function flattenMatrices(mat, ...)
if not mat then return end
local tonumber = tonumber
local ret,l = {}, 1
ret.dimension = #mat
for i = 1,#mat do
for k = 1,#mat[i] do
ret[l], l = tonumber(mat[i][k]), l+1
end
end
return ret, flattenMatrices(...)
end
-- automagic uniform setter
local function shader_dispatch_send(self, name, value, ...)
local valuetype = type(value)
if valuetype == "number" or valuetype == "boolean" then -- scalar
self:sendFloat(name, value, ...)
elseif valuetype == "userdata" and value:typeOf("Image") then
self:sendImage(name, value)
elseif valuetype == "userdata" and value:typeOf("Canvas") then
self:sendCanvas(name, value)
elseif valuetype == "table" then -- vector or matrix
valuetype = type(value[1])
if valuetype == "number" or valuetype == "boolean" then
self:sendFloat(name, value, ...)
elseif valuetype == "table" then
self:sendMatrix(name, flattenMatrices(value, ...))
else
error("Cannot send value (unsupported type: {"..valuetype.."}).")
end
else
if valuetype == "userdata" and value.type then valuetype = value.type end
error("Cannot send value (unsupported type: "..valuetype..").")
end
end
local function shader_send_protected(self, name, value, ...)
local success, err = pcall(shader_dispatch_send, self, name, value, ...)
if not success then
if err and type(err) == "string" then
err = err:gsub("^(.-):(%d+): ", "")
end
error(err, 2)
end
end
local newShader = love.graphics.newShader
function love.graphics.newShader(vertexcode, pixelcode)
love.graphics.newShader = newShader
local success, shader = pcall(love.graphics.newShader, vertexcode, pixelcode)
if success then
local meta = getmetatable(shader)
meta.send = shader_send_protected
meta.sendBoolean = meta.sendFloat
return shader
else
return error(shader, 2)
end
end
end