HUD-Texture renders.
HUD-Texture renders and the whole screen is black. Still TODO: - Will have to sort out alpha - Clean up refs #472 @5h
This commit is contained in:
Stefan Dresselhaus
83
src/Main.hs
83
src/Main.hs
@ -1,6 +1,18 @@
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{-# LANGUAGE BangPatterns, DoAndIfThenElse #-}
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module Main where
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import Data.Int (Int8)
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import Graphics.Rendering.OpenGL.GL.Texturing.Specification (TextureSize2D)
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import Graphics.Rendering.OpenGL.GL.PixelRectangles.ColorTable (PixelInternalFormat(..))
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import Graphics.Rendering.OpenGL.GL.Texturing.Specification (texImage2D)
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import Foreign.Marshal.Array (pokeArray)
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import Control.Monad (liftM)
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import Foreign.Marshal.Alloc (allocaBytes)
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import Graphics.Rendering.OpenGL.GL.Texturing.Parameters (textureFilter)
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import Graphics.Rendering.OpenGL.GL.Texturing.Specification (TextureTarget2D(Texture2D))
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import Graphics.Rendering.OpenGL.GL.Texturing.Objects (textureBinding)
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import Graphics.Rendering.OpenGL.GL.Texturing.Parameters (TextureFilter(..))
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-- Monad-foo and higher functional stuff
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import Control.Monad (unless, void, when, join)
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import Control.Arrow ((***))
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@ -16,8 +28,10 @@ import Control.Monad.RWS.Strict (RWST, ask, asks,
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import Data.Distributive (distribute, collect)
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-- FFI
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import Foreign (Ptr, castPtr, with)
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import Foreign (Ptr, castPtr, with, sizeOf)
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import Foreign.C (CFloat)
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import Foreign.C.Types (CInt)
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import Data.Word (Word8)
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-- Math
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import Control.Lens ((^.), (.~), (%~))
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@ -32,6 +46,7 @@ import Graphics.UI.SDL as SDL
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import qualified Graphics.Rendering.OpenGL.GL as GL
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import Graphics.Rendering.OpenGL.Raw.Core31
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import Data.Time (getCurrentTime, diffUTCTime)
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import Graphics.GLUtil.BufferObjects (offset0)
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import Graphics.Rendering.OpenGL.Raw.ARB.TessellationShader
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-- Our modules
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@ -40,7 +55,8 @@ import Render.Misc (checkError,
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createFrustum, getCam,
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curb, tryWithTexture)
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import Render.Render (initRendering,
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initMapShader)
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initMapShader,
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initHud)
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import UI.Callbacks
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import UI.GUIOverlay
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import Types
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@ -84,6 +100,7 @@ main = do
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--TTF.setFontStyle font TTFNormal
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--TTF.setFontHinting font TTFHNormal
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glHud <- initHud
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let zDistClosest = 1
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zDistFarthest = zDistClosest + 30
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--TODO: Move near/far/fov to state for runtime-changability & central storage
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@ -157,7 +174,7 @@ main = do
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}
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, _gl = GLState
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{ _glMap = glMap
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, _hudTexture = Nothing
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, _glHud = glHud
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}
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, _game = GameState
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{
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@ -202,6 +219,9 @@ draw = do
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liftIO $ do
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--(vi,GL.UniformLocation proj) <- initShader
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GL.clear [GL.ColorBuffer, GL.DepthBuffer]
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GL.currentProgram GL.$= Just (state ^. gl.glMap.mapProgram)
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checkError "clearing buffer"
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--set up projection (= copy from state)
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with (distribute frust) $ \ptr ->
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@ -213,18 +233,18 @@ draw = do
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with (distribute cam) $ \ptr ->
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glUniformMatrix4fv vmat 1 0 (castPtr (ptr :: Ptr (M44 CFloat)))
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checkError "copy cam"
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--set up normal--Mat transpose((model*camera)^-1)
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let normal = (case inv33 (fmap (^. _xyz) cam ^. _xyz) of
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(Just a) -> a
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Nothing -> eye3) :: M33 CFloat
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nmap = collect id normal :: M33 CFloat --transpose...
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with (distribute nmap) $ \ptr ->
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glUniformMatrix3fv nmat 1 0 (castPtr (ptr :: Ptr (M33 CFloat)))
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checkError "nmat"
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glUniform1f tli (fromIntegral tessFac)
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glUniform1f tlo (fromIntegral tessFac)
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@ -236,17 +256,33 @@ draw = do
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GL.vertexAttribPointer vi GL.$= fgVertexIndex
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GL.vertexAttribArray vi GL.$= GL.Enabled
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checkError "beforeDraw"
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glPatchParameteri gl_PATCH_VERTICES 3
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glPolygonMode gl_FRONT gl_LINE
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glDrawArrays gl_PATCHES 0 (fromIntegral numVert)
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checkError "draw"
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checkError "draw map"
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{-renderer <- getRenderer (env ^. windowObject)
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-- Drawing HUD
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let hud = state ^. gl.glHud
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stride = fromIntegral $ sizeOf (undefined::GLfloat) * 2
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vad = GL.VertexArrayDescriptor 2 GL.Float stride offset0
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GL.currentProgram GL.$= Just (hud ^. hudProgram)
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GL.activeTexture GL.$= GL.TextureUnit 0
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textureBinding GL.Texture2D GL.$= Just (hud ^. hudTexture)
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GL.bindBuffer GL.ArrayBuffer GL.$= Just (hud ^. hudVBO)
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GL.vertexAttribPointer (hud ^. hudVertexIndex) GL.$= (GL.ToFloat, vad)
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GL.vertexAttribArray (hud ^. hudVertexIndex) GL.$= GL.Enabled
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GL.bindBuffer GL.ElementArrayBuffer GL.$= Just (hud ^. hudEBO)
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GL.drawElements GL.TriangleStrip 4 GL.UnsignedInt offset0
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{-let winRenderer = env ^. renderer
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tryWithTexture
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(state ^. gl.hudTexture) --maybe tex
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(\tex -> renderCopy renderer tex Nothing Nothing) --function with "hole"
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(\tex -> renderCopy winRenderer tex Nothing Nothing) --function with "hole"
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--Nothing == whole source-tex, whole dest-tex
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(return ()) --fail-case-}
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@ -346,19 +382,20 @@ adjustWindow = do
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frust = createFrustum fov near far ratio
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liftIO $ glViewport 0 0 (fromIntegral fbWidth) (fromIntegral fbHeight)
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modify $ camera.frustum .~ frust
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hudTex <- liftIO $ do
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putStrLn $ show (env ^. windowObject)
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case state ^. gl.hudTexture of
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Just tex -> destroyTexture tex
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_ -> return ()
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winRenderer <- getRenderer (env ^. windowObject)
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createTexture
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winRenderer -- where
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PixelFormatRGBA8888 -- RGBA32-bit
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TextureAccessStreaming -- change occasionally
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fbWidth -- width
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fbHeight -- height
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modify $ gl.hudTexture .~ (Just hudTex) -- -}
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liftIO $ do
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let texid = state ^. gl.glHud.hudTexture
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int = fromInteger . toInteger
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textureBinding Texture2D GL.$= Just texid
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checkError "bind HUD-Tex"
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textureFilter Texture2D GL.$= ((Linear', Nothing), Linear')
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checkError "filter HUD-Tex"
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allocaBytes (fbWidth*fbHeight*4) $ \ptr -> do
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let imData = take (fbWidth*fbHeight*4) (cycle [255,0,0,128] :: [Int8])
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--putStrLn $ show imData
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pokeArray ptr imData
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texImage2D Texture2D GL.NoProxy 0 RGBA8 (GL.TextureSize2D (int fbWidth) (int fbHeight)) 0
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(GL.PixelData GL.RGBA GL.UnsignedByte ptr)
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checkError "setting up HUD-Tex"
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processEvents :: Pioneers ()
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processEvents = do
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