From 1fe07b8aace16fc3b4d933d16333de2bad7a0d11 Mon Sep 17 00:00:00 2001
From: piernov <piernov@piernov.org>
Date: Thu, 3 Apr 2014 09:49:16 +0200
Subject: Port to LÖVE 0.9 and delete vflip
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---
 fakecanvas.lua | 50 +++++---------------------------------------------
 1 file changed, 5 insertions(+), 45 deletions(-)

(limited to 'fakecanvas.lua')

diff --git a/fakecanvas.lua b/fakecanvas.lua
index 2b34dca..e5cb7b4 100644
--- a/fakecanvas.lua
+++ b/fakecanvas.lua
@@ -24,12 +24,12 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 --]]
 
-assert(love._version:match "^0.8", "fakecanvas requires LOVE 0.8")
+assert(love._version:match "^0.9", "fakecanvas requires LOVE 0.9")
 assert(debug, "fake canvases require access to the debug library")
 
 local canvas_supported      = love.graphics.isSupported "canvas"
 local npot_supported        = love.graphics.isSupported "npot"
-local pixeleffect_supported = love.graphics.isSupported "pixeleffect"
+local shader_supported = love.graphics.isSupported "shader"
 
 local function nextpo2 (x) return 2^math.ceil(math.log(x) / math.log(2)) end
 local function prevpo2 (x) return 2^math.floor(math.log(x) / math.log(2)) end
@@ -40,16 +40,6 @@ local canvasmt = { __index = canvas }
 
 local canvases = setmetatable({ }, { __mode = "k" })
 
-local options = {
-	-- flip fake canvas images vertically (then unflip with quad) in order to 
-	-- match real canvas orientation. this only makes a difference inside 
-	-- shaders, when using the canvas' texture coordinates. if you do not need
-	-- to use this information, you can get a performance boost by disabling
-	-- this option. you can enable or disable vflipping for individual fake
-	-- canvases by placing setOption() calls around the newCanvas() call.
-	vflip = true, 
-}
-
 local blank
 function canvas:clear (...)
 	local nargs = select("#", ...)
@@ -128,11 +118,6 @@ local function Canvas (width, height)
 	c._imagedata  = love.image.newImageData(w, h)
 	c._image      = love.graphics.newImage(c._imagedata)
 	c._quad       = love.graphics.newQuad(0, 0, w, h, w, h)
-	c._vflip      = options.vflip
-	
-	if options.vflip then
-		c._quad:flip(false, true) -- flip vertically part 0
-	end
 	
 	local p = newproxy(true)
 	
@@ -158,16 +143,6 @@ local function screenshot (state)
 	
 	local drawn = love.graphics.newScreenshot()
 	
-	if canvas._vflip then -- flip vertically (unfortunately) so it can later be drawn unflipped in order to match texcoords of real canvases. part 1
-		love.graphics.setBackgroundColor(0, 0, 0, 0)
-		love.graphics.clear()
-		
-		local flipped = love.graphics.newImage(drawn) 
-		love.graphics.draw(flipped, 0, canvas._imagedata:getHeight(), 0, 1, -1)
-		
-		drawn = love.graphics.newScreenshot()
-	end
-	
 	canvas._imagedata:paste(drawn, 0, 0, 0, 0, canvas._imagedata:getWidth(), canvas._imagedata:getHeight())
 	canvas._image = love.graphics.newImage(canvas._imagedata) -- apparently images don't update when their imagedata changes, so
 	
@@ -229,7 +204,6 @@ local _love_funcs = {
 	newCanvas = love.graphics.newCanvas,
 	
 	draw      = love.graphics.draw,
-	drawq     = love.graphics.drawq,
 	
 	pe_send   = pixeleffect_supported and registry.PixelEffect.send,
 	--technically sendCanvas should also be wrapped but that's not officially exposed
@@ -241,17 +215,11 @@ local _wrap_funcs = {
 	
 	draw = function (obj, x, y, r, sx, sy, ox, oy, kx, ky)
 		if canvases[obj] then
-			return _love_funcs.drawq(obj:_getImage(), obj:_getQuad(), x or 0, y or 0, r, sx, sy, ox, oy, kx, ky) -- flip texcoords part 2
+			return _love_funcs.draw(obj:_getImage(), obj:_getQuad(), x or 0, y or 0, r, sx, sy, ox, oy, kx, ky) -- flip texcoords part 2
 		end
 		return _love_funcs.draw(obj, x, y, r, sx, sy, ox, oy, kx, ky)
 	end,
-	drawq = function (obj, q, x, y, r, sx, sy, ox, oy, kx, ky)
-		if canvases[obj] then
-			return _love_funcs.drawq(obj:_getImage(), q or obj:_getQuad(), x, y, r, sx, sy, ox, oy, kx, ky)
-		end
-		return _love_funcs.drawq(obj, q, x, y, r, sx, sy, ox, oy, kx, ky)
-	end,
-	
+
 	pe_send   = function (pe, name, data)
 		if canvases[data] then
 			return _love_funcs.pe_send(pe, name, data:_getImage())
@@ -307,16 +275,8 @@ function M.getMaxCanvasSize (hw, hh)
 	end
 end
 
-function M.setOption (name, value)
-	options[name] = value
-end
-
-function M.getOption (name)
-	return options[name]
-end
-
 blank = love.image.newImageData(M.getMaxCanvasSize())
 
 M.enable()
 
-return M
\ No newline at end of file
+return M
-- 
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