lightmap drawing won't use spritebatch

src/net/torvald/terrarum/AppLoader.java

@@ -252,7 +252,7 @@ public class AppLoader implements ApplicationListener {
 
     private static ShaderProgram shaderBayerSkyboxFill;
     public static ShaderProgram shaderHicolour;
-    public static ShaderProgram shaderPassthru;
+    public static ShaderProgram shaderPassthruRGB;
     public static ShaderProgram shaderColLUT;
 
     public static Mesh fullscreenQuad;
@@ -308,8 +308,8 @@ public class AppLoader implements ApplicationListener {
         // set GL graphics constants
         shaderBayerSkyboxFill = loadShader("assets/4096.vert", "assets/4096_bayer_skyboxfill.frag");
         shaderHicolour = loadShader("assets/4096.vert", "assets/hicolour.frag");
-        shaderPassthru = loadShader("assets/4096.vert", "assets/passthru.frag");
-        shaderColLUT = loadShader("assets/4096.vert", "assets/passthru.frag");
+        shaderPassthruRGB = loadShader("assets/4096.vert", "assets/passthrurgb.frag");
+        shaderColLUT = loadShader("assets/4096.vert", "assets/passthrurgb.frag");
 
         fullscreenQuad = new Mesh(
                 true, 4, 6,
@@ -513,7 +513,7 @@ public class AppLoader implements ApplicationListener {
 
         shaderBayerSkyboxFill.dispose();
         shaderHicolour.dispose();
-        shaderPassthru.dispose();
+        shaderPassthruRGB.dispose();
         shaderColLUT.dispose();
 
         assetManager.dispose();

src/net/torvald/terrarum/PostProcessor.kt

@@ -93,7 +93,7 @@ object PostProcessor {
                 if (AppLoader.getConfigBoolean("fxdither"))
                     AppLoader.shaderHicolour
                 else
-                    AppLoader.shaderPassthru
+                    AppLoader.shaderPassthruRGB
 
         fbo.colorBufferTexture.bind(0)
 

src/net/torvald/terrarum/Terrarum.kt

@@ -295,7 +295,7 @@ object Terrarum : Screen {
             shaderSkyboxFill.end()
         }
         else {
-            shaderBayer = AppLoader.loadShader("assets/4096.vert", "assets/passthru.frag")
+            shaderBayer = AppLoader.loadShader("assets/4096.vert", "assets/passthrurgb.frag")
             shaderSkyboxFill = AppLoader.loadShader("assets/4096.vert", "assets/skyboxfill.frag")
         }
 

src/net/torvald/terrarum/modulebasegame/IngameRenderer.kt

@@ -31,6 +31,8 @@ object IngameRenderer {
     lateinit var batch: SpriteBatch
     private lateinit var camera: OrthographicCamera
 
+    private lateinit var blurWriteQuad: Mesh
+
     private lateinit var lightmapFboA: FrameBuffer
     private lateinit var lightmapFboB: FrameBuffer
     private lateinit var fboRGB: FrameBuffer
@@ -45,6 +47,7 @@ object IngameRenderer {
     private val shaderBlendGlow = Terrarum.shaderBlendGlow
     private val shaderRGBOnly = Terrarum.shaderRGBOnly
     private val shaderAtoGrey = Terrarum.shaderAtoGrey
+    private val shaderPassthru = SpriteBatch.createDefaultShader()
 
     private val width = Terrarum.WIDTH
     private val height = Terrarum.HEIGHT
@@ -490,44 +493,42 @@ object IngameRenderer {
 
         // initialise readBuffer with untreated lightmap
         blurReadBuffer.inAction(camera, batch) {
-            batch.inUse {
-                blendDisable(batch)
-                batch.color = Color.WHITE
-                LightmapRenderer.draw(batch)
-            }
+            val texture = LightmapRenderer.draw()
+            texture.bind(0)
+
+            shaderPassthru.begin()
+            shaderPassthru.setUniformMatrix("u_projTrans", camera.combined)
+            shaderPassthru.setUniformi("u_texture", 0)
+            blurWriteQuad.render(shaderPassthru, GL20.GL_TRIANGLES)
+            shaderPassthru.end()
         }
 
-
-
-
+        // do blurring
         for (i in 0 until blurIterations) {
             blurWriteBuffer.inAction(camera, batch) {
 
-                batch.inUse {
-                    val texture = blurReadBuffer.colorBufferTexture
+                val texture = blurReadBuffer.colorBufferTexture
+                texture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
+                texture.bind(0)
 
-                    texture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
+                shaderBlur.begin()
+                shaderBlur.setUniformMatrix("u_projTrans", camera.combined)
+                shaderBlur.setUniformi("u_texture", 0)
+                shaderBlur.setUniformf("iResolution",
+                        blurWriteBuffer.width.toFloat(), blurWriteBuffer.height.toFloat())
+                shaderBlur.setUniformf("flip", 1f)
+                if (i % 2 == 0)
+                    shaderBlur.setUniformf("direction", blurRadius, 0f)
+                else
+                    shaderBlur.setUniformf("direction", 0f, blurRadius)
+                blurWriteQuad.render(shaderBlur, GL20.GL_TRIANGLES)
+                shaderBlur.end()
 
 
-                    batch.shader = shaderBlur
-                    batch.shader.setUniformf("iResolution",
-                            blurWriteBuffer.width.toFloat(), blurWriteBuffer.height.toFloat())
-                    batch.shader.setUniformf("flip", 1f)
-                    if (i % 2 == 0)
-                        batch.shader.setUniformf("direction", blurRadius, 0f)
-                    else
-                        batch.shader.setUniformf("direction", 0f, blurRadius)
-
-
-                    batch.color = Color.WHITE
-                    batch.draw(texture, 0f, 0f)
-
-
-                    // swap
-                    val t = blurWriteBuffer
-                    blurWriteBuffer = blurReadBuffer
-                    blurReadBuffer = t
-                }
+                // swap
+                val t = blurWriteBuffer
+                blurWriteBuffer = blurReadBuffer
+                blurReadBuffer = t
             }
         }
 
@@ -540,6 +541,13 @@ object IngameRenderer {
 
     fun resize(width: Int, height: Int) {
         if (!init) {
+            blurWriteQuad = Mesh(
+                    true, 4, 6,
+                    VertexAttribute.Position(),
+                    VertexAttribute.ColorUnpacked(),
+                    VertexAttribute.TexCoords(0)
+            )
+
             init = true
         }
         else {
@@ -572,7 +580,13 @@ object IngameRenderer {
         LightmapRenderer.resize(width, height)
 
 
-        //LightmapRenderer.fireRecalculateEvent()
+        blurWriteQuad.setVertices(floatArrayOf(
+                0f,0f,0f, 1f,1f,1f,1f, 0f,1f,
+                lightmapFboA.width.toFloat(),0f,0f, 1f,1f,1f,1f, 1f,1f,
+                lightmapFboA.width.toFloat(),lightmapFboA.height.toFloat(),0f, 1f,1f,1f,1f, 1f,0f,
+                0f,lightmapFboA.height.toFloat(),0f, 1f,1f,1f,1f, 0f,0f))
+        blurWriteQuad.setIndices(shortArrayOf(0, 1, 2, 2, 3, 0))
+
     }
 
     private val TILE_SIZEF = FeaturesDrawer.TILE_SIZE.toFloat()

src/net/torvald/terrarum/worlddrawer/LightmapRendererNew.kt

@@ -1,11 +1,8 @@
 package net.torvald.terrarum.worlddrawer
 
-import com.badlogic.gdx.Gdx
 import com.badlogic.gdx.graphics.Color
-import com.badlogic.gdx.graphics.GL20
 import com.badlogic.gdx.graphics.Pixmap
 import com.badlogic.gdx.graphics.Texture
-import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import com.badlogic.gdx.graphics.glutils.ShaderProgram
 import com.jme3.math.FastMath
 import net.torvald.terrarum.*
@@ -559,7 +556,7 @@ object LightmapRenderer {
 
     private var _lightBufferAsTex: Texture = Texture(1, 1, Pixmap.Format.RGBA8888)
 
-    internal fun draw(batch: SpriteBatch) {
+    internal fun draw(): Texture {
 
         // when shader is not used: 0.5 ms on 6700K
         AppLoader.measureDebugTime("Renderer.LightToScreen") {
@@ -600,12 +597,14 @@ object LightmapRenderer {
             _lightBufferAsTex = Texture(lightBuffer)
             _lightBufferAsTex.setFilter(Texture.TextureFilter.Nearest, Texture.TextureFilter.Nearest)
 
-
-            Gdx.gl.glActiveTexture(GL20.GL_TEXTURE0) // so that batch that comes next will bind any tex to it
+            /*Gdx.gl.glActiveTexture(GL20.GL_TEXTURE0) // so that batch that comes next will bind any tex to it
             //      we might not need shader here...
             //batch.draw(lightBufferAsTex, 0f, 0f, lightBufferAsTex.width.toFloat(), lightBufferAsTex.height.toFloat())
             batch.draw(_lightBufferAsTex, 0f, 0f, _lightBufferAsTex.width * DRAW_TILE_SIZE, _lightBufferAsTex.height * DRAW_TILE_SIZE)
+            */
         }
+
+        return _lightBufferAsTex
     }
 
     fun dispose() {