no shadows against skybox

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

@@ -84,6 +84,7 @@ object IngameRenderer : Disposable {
     private lateinit var fboRGBactorsMiddleShadow: Float16FrameBuffer // for large shadow eff; A channel is for glow effects so they don't get shadow effects
     private lateinit var fboRGBterrainShadow: Float16FrameBuffer // for large shadow eff; A channel is for glow effects so they don't get shadow effects
 
+    private lateinit var fboRGBwall: Float16FrameBuffer // for masking away the shadows
 
     private lateinit var rgbTex: TextureRegion
     private lateinit var aTex: TextureRegion
@@ -511,7 +512,6 @@ object IngameRenderer : Disposable {
         fboRGB_lightMixed0.inAction(null, null) { clearBuffer() }
         fboRGB_lightMixed.inAction(null, null) { clearBuffer() }
 
-
         fboRGBactorsBehind.inAction(camera, batch) {
             clearBuffer()
             setCameraPosition(0f, 0f)
@@ -539,6 +539,12 @@ object IngameRenderer : Disposable {
         }
         BlurMgr.makeBlur(fboRGBactorsMiddle, fboRGBactorsMiddleShadow, 2.5f)
 
+        fboRGBwall.inAction(camera, batch) {
+            clearBuffer()
+            setCameraPosition(0f, 0f)
+            BlocksDrawer.drawWall(batch.projectionMatrix, false)
+        }
+
         fboRGBterrain.inAction(camera, batch) {
             clearBuffer()
             setCameraPosition(0f, 0f)
@@ -546,24 +552,41 @@ object IngameRenderer : Disposable {
         }
         BlurMgr.makeBlur(fboRGBterrain, fboRGBterrainShadow, 2.5f)
 
+        /////////////////////////////////////////////////////////////////////////////////////////////////////
 
         fboRGB.inAction(camera, batch) {
             setCameraPosition(0f, 0f)
 
-            BlocksDrawer.drawWall(batch.projectionMatrix, false)
+            batch.inUse {
+                batch.shader = null
+                batch.color = Color.WHITE
+                batch.drawFlipped(fboRGBwall.colorBufferTexture, 0f, 0f)
+            }
 
             // draw actor shadow BEFORE the terrain draw
+            fboRGBwall.colorBufferTexture.bind(1)
+            Gdx.gl.glActiveTexture(GL20.GL_TEXTURE0) // so that batch that comes next will bind any tex to it
+
             batch.inUse {
                 batch.shader = shaderShadowShallow
+                shaderShadowShallow.setUniformi("u_wall", 1)
                 setCameraPosition(0f, 0f)
                 batch.drawFlipped(fboRGBactorsBehindShadow.colorBufferTexture, 0f, 0f)
+            }
 
+            fboRGBwall.colorBufferTexture.bind(1)
+            Gdx.gl.glActiveTexture(GL20.GL_TEXTURE0) // so that batch that comes next will bind any tex to it
+
+            batch.inUse {
                 batch.shader = shaderShadowDeep
+                shaderShadowDeep.setUniformi("u_wall", 1)
                 setCameraPosition(0f, 0f)
                 batch.drawFlipped(fboRGBterrainShadow.colorBufferTexture, 0f, 0f)
                 batch.drawFlipped(fboRGBactorsMiddleShadow.colorBufferTexture, 0f, 0f)
             }
 
+//            Gdx.gl20.glActiveTexture(0)
+
             // draw behind actors and particles
             batch.inUse {
                 batch.shader = shaderForActors
@@ -1288,6 +1311,7 @@ object IngameRenderer : Disposable {
         fboRGBactorsBehindShadow = Float16FrameBuffer(width, height, false)
         fboRGBactorsMiddleShadow = Float16FrameBuffer(width, height, false)
         fboRGBterrainShadow = Float16FrameBuffer(width, height, false)
+        fboRGBwall = Float16FrameBuffer(width, height, false)
         lightmapFbo = Float16FrameBuffer(
                 LightmapRenderer.lightBuffer.width * LightmapRenderer.DRAW_TILE_SIZE.toInt(),
                 LightmapRenderer.lightBuffer.height * LightmapRenderer.DRAW_TILE_SIZE.toInt(),
@@ -1356,6 +1380,7 @@ object IngameRenderer : Disposable {
         if (::fboRGBactorsBehindShadow.isInitialized) fboRGBactorsBehindShadow.tryDispose()
         if (::fboRGBactorsMiddleShadow.isInitialized) fboRGBactorsMiddleShadow.tryDispose()
         if (::fboRGBterrainShadow.isInitialized) fboRGBterrainShadow.tryDispose()
+        if (::fboRGBwall.isInitialized) fboRGBwall.tryDispose()
 
         blurtex0.tryDispose()
 

src/net/torvald/terrarum/modulebasegame/console/ExportFBO.kt

@@ -132,6 +132,11 @@ internal object ExportFBO : ConsoleCommand {
     fun fborgbterrainshadow(): FrameBuffer {
         return IngameRenderer.extortField<Float16FrameBuffer>("fboRGBterrainShadow")!!
     }
+
+    @ExportFBOCmd("Framebuffer for wall blocks")
+    fun fborgbwall(): FrameBuffer {
+        return IngameRenderer.extortField<Float16FrameBuffer>("fboRGBwall")!!
+    }
 }
 
 internal annotation class ExportFBOCmd(val description: String)

src/shaders/shadowdeep.frag

@@ -7,12 +7,14 @@ in vec4 v_color;
 in vec4 v_generic;
 in vec2 v_texCoords;
 uniform sampler2D u_texture;
+uniform sampler2D u_wall;
 out vec4 fragColor;
 
 vec4 mult = vec4(0.0, 0.0, 0.0, 1.0);
 
 void main() {
+    vec4 backcol = texture(u_wall, v_texCoords);
     vec4 incol = texture(u_texture, v_texCoords);
-    vec4 outcol = vec4(incol.rgb, pow(incol.a, 1.4142));
+    vec4 outcol = vec4(incol.rgb, backcol.a * pow(incol.a, 1.4142));
     fragColor = mult * outcol;
 }

src/shaders/shadowshallow.frag

@@ -7,12 +7,14 @@ in vec4 v_color;
 in vec4 v_generic;
 in vec2 v_texCoords;
 uniform sampler2D u_texture;
+uniform sampler2D u_wall;
 out vec4 fragColor;
 
 vec4 mult = vec4(0.0, 0.0, 0.0, 0.703);
 
 void main() {
+    vec4 backcol = texture(u_wall, v_texCoords);
     vec4 incol = texture(u_texture, v_texCoords);
-    vec4 outcol = vec4(incol.rgb, pow(incol.a, 1.4142));
+    vec4 outcol = vec4(incol.rgb, backcol.a * pow(incol.a, 1.4142));
     fragColor = mult * outcol;
 }