shaders: apply tint before texel, particle fog

Applying the tint before the texel, fixes a lot of fog issues that are caused by lighting

Author: Bixilon

src/main/java/de/bixilon/minosoft/gui/rendering/entities/feature/text/BillboardTextShader.kt

@@ -33,5 +33,6 @@ class BillboardTextShader(
     override var cameraPosition: Vec3 by cameraPosition()
     override var fog: FogManager by fog()
     var matrix: Mat4 by uniform("uMatrix", Mat4())
+
     override var tint by uniform("uTintColor", ChatColors.WHITE) { shader, name, value -> shader.setUInt(name, value.rgb) }
 }

src/main/java/de/bixilon/minosoft/gui/rendering/particle/ParticleShader.kt

@@ -1,6 +1,6 @@
 /*
  * Minosoft
- * Copyright (C) 2020-2023 Moritz Zwerger
+ * Copyright (C) 2020-2024 Moritz Zwerger
  *
  * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
  *
@@ -15,22 +15,23 @@ package de.bixilon.minosoft.gui.rendering.particle
 
 import de.bixilon.kotlinglm.mat4x4.Mat4
 import de.bixilon.kotlinglm.vec3.Vec3
+import de.bixilon.minosoft.gui.rendering.camera.fog.FogManager
 import de.bixilon.minosoft.gui.rendering.light.LightmapBuffer
 import de.bixilon.minosoft.gui.rendering.shader.Shader
-import de.bixilon.minosoft.gui.rendering.shader.types.AnimatedShader
-import de.bixilon.minosoft.gui.rendering.shader.types.LightShader
-import de.bixilon.minosoft.gui.rendering.shader.types.TextureShader
-import de.bixilon.minosoft.gui.rendering.shader.types.ViewProjectionShader
+import de.bixilon.minosoft.gui.rendering.shader.types.*
 import de.bixilon.minosoft.gui.rendering.system.base.shader.NativeShader
 import de.bixilon.minosoft.gui.rendering.system.base.shader.ShaderUniforms
 import de.bixilon.minosoft.gui.rendering.system.base.texture.TextureManager
 
 class ParticleShader(
     override val native: NativeShader,
-) : Shader(), TextureShader, AnimatedShader, LightShader, ViewProjectionShader {
+) : Shader(), TextureShader, AnimatedShader, LightShader, ViewProjectionShader, FogShader {
     override var textures: TextureManager by textureManager()
     override val lightmap: LightmapBuffer by lightmap()
     override var viewProjectionMatrix: Mat4 by viewProjectionMatrix()
+    override var fog: FogManager by fog()
+    override var cameraPosition: Vec3 by cameraPosition()
+
     var cameraRight by uniform(ShaderUniforms.CAMERA_RIGHT, Vec3(), NativeShader::setVec3)
     var cameraUp by uniform(ShaderUniforms.CAMERA_UP, Vec3(), NativeShader::setVec3)
 }

src/main/java/de/bixilon/minosoft/gui/rendering/system/opengl/OpenGLNativeShader.kt

@@ -69,7 +69,7 @@ class OpenGLNativeShader(
         glCompileShader(program)
 
         if (glGetShaderi(program, GL_COMPILE_STATUS) == GL_FALSE) {
-            throw ShaderLoadingException("Can not load shader: $file\n:" + glGetShaderInfoLog(program), glsl)
+            throw ShaderLoadingException("Can not load shader: $file:\n" + glGetShaderInfoLog(program), glsl)
         }
 
         return program
@@ -129,7 +129,7 @@ class OpenGLNativeShader(
         val location = uniformLocations.getOrPut(uniformName) {
             val location = glGetUniformLocation(handler, uniformName)
             if (location < 0) {
-                throw IllegalArgumentException("No uniform named $uniformName in $this")
+                throw IllegalArgumentException("No uniform named $uniformName in $this, maybe you use something that has been optimized out? Check your shader code!")
             }
             return@getOrPut location
         }

src/main/resources/assets/minosoft/rendering/shader/chunk/chunk.fsh

@@ -25,6 +25,7 @@ out vec4 foutColor;
 #include "minosoft:animation"
 
 void main() {
+    applyDefaults();
     applyTint();
     applyTexel();
 }

src/main/resources/assets/minosoft/rendering/shader/entities/features/block/block.fsh

@@ -24,6 +24,7 @@ out vec4 foutColor;
 #include "minosoft:animation"
 
 void main() {
-    applyTexel();
+    applyDefaults();
     applyTint();
+    applyTexel();
 }

src/main/resources/assets/minosoft/rendering/shader/entities/features/block/flashing/flashing.fsh

@@ -27,8 +27,9 @@ in vec4 finFlashColor;
 #include "minosoft:animation"
 
 void main() {
-    applyTexel();
+    applyDefaults();
     applyTint();
+    applyTexel();
 
     foutColor = mix(foutColor, finFlashColor, uFlashProgress);
 }

src/main/resources/assets/minosoft/rendering/shader/entities/features/text/text.fsh

@@ -25,6 +25,7 @@ out vec4 foutColor;
 #include "minosoft:animation"
 
 void main() {
+    applyDefaults();
     applyTint();
     applyTexel();
 }

src/main/resources/assets/minosoft/rendering/shader/entities/player/arm/arm.fsh

@@ -29,8 +29,9 @@ flat in uint finAllowTransparency;
 
 void main() {
     if (finTintColor.a == 0.0f) discard;
-    applyTexel();
+    applyDefaults();
     applyTint();
+    applyTexel();
     if (finAllowTransparency > 0u) {
         if (foutColor.a < 0.5f) discard;
     }

src/main/resources/assets/minosoft/rendering/shader/entities/player/player.fsh

@@ -29,8 +29,9 @@ flat in uint finAllowTransparency;
 
 void main() {
     if (finTintColor.a == 0.0f) discard;
-    applyTexel();
+    applyDefaults();
     applyTint();
+    applyTexel();
     if (finAllowTransparency > 0u) {
         if (foutColor.a < 0.5f) discard;
     }

src/main/resources/assets/minosoft/rendering/shader/generic/texture/texture.fsh

@@ -23,6 +23,7 @@ in vec2 finUV;
 #include "minosoft:animation"
 
 void main() {
-    applyTexel();
+    applyDefaults();
     applyTint();
+    applyTexel();
 }