Update test shaders to GLSL 150

About time I guess

src/main/java/ladysnake/satin/api/managed/ShaderEffectManager.java

@@ -112,7 +112,7 @@ default ManagedCoreShader manageProgram(Identifier location, Consumer<ManagedCor
      * Manages a core {@link net.minecraft.client.gl.ShaderProgram} loaded from a json definition file
      *
      * <p>The shader location must be in {@code assets/shaders/core}.
-     * Eg. to get a shader located at {@code mymod/assets/shaders/core/myshader.json}:
+     * E.g. to get a shader located at {@code mymod/assets/shaders/core/myshader.json}:
      * <pre>{@code ShaderEffectManager.getInstance().manageCoreShader(new Identifier("mymod", "myshader")}</pre>
      *
      * @param location the location of the json within your mod's assets

src/main/java/ladysnake/satin/impl/ReloadableShaderEffectManager.java

@@ -45,7 +45,7 @@ public final class ReloadableShaderEffectManager implements ShaderEffectManager,
     private final Set<ResettableManagedShaderBase<?>> managedShaders = new ReferenceOpenHashSet<>();
 
     /**
-     * Manages a post processing shader loaded from a json definition file
+     * Manages a post-processing shader loaded from a json definition file
      *
      * @param location the location of the json within your mod's assets
      * @return a lazily initialized shader effect
@@ -56,7 +56,7 @@ public ManagedShaderEffect manage(Identifier location) {
     }
 
     /**
-     * Manages a post processing shader loaded from a json definition file
+     * Manages a post-processing shader loaded from a json definition file
      *
      * @param location            the location of the json within your mod's assets
      * @param initCallback a block ran once the shader effect is initialized

src/testmod/resources/assets/satinbasictest/shaders/program/blit.fsh

@@ -1,14 +1,16 @@
-#version 110
+#version 150
 
 uniform sampler2D DiffuseSampler;
 
 uniform vec4 ColorModulate;
 uniform int Multiplier; // just checking ints work
 
-varying vec2 texCoord;
+in vec2 texCoord;
+
+out vec4 fragColor;
 
 void main() {
 
-    gl_FragColor = texture2D(DiffuseSampler, texCoord) * ColorModulate * float(Multiplier);
+    fragColor = texture(DiffuseSampler, texCoord) * ColorModulate * float(Multiplier);
 
 }

src/testmod/resources/assets/satinbasictest/shaders/program/blit.vsh

@@ -1,11 +1,11 @@
-#version 110
+#version 150
 
-attribute vec4 Position;
+in vec4 Position;
 
 uniform mat4 ProjMat;
 uniform vec2 OutSize;
 
-varying vec2 texCoord;
+out vec2 texCoord;
 
 void main(){
     vec4 outPos = ProjMat * vec4(Position.xy, 0.0, 1.0);

src/testmod/resources/assets/satinrenderlayer/shaders/program/illusion.fsh

@@ -1,13 +1,15 @@
-#version 110
+#version 150
 
 uniform sampler2D DiffuseSampler;
 
 uniform vec4 ColorModulate;
 
-varying vec2 texCoord;
+in vec2 texCoord;
+
+out vec4 fragColor;
 
 void main() {
 
-    gl_FragColor = texture2D(DiffuseSampler, texCoord) * ColorModulate;
+    fragColor = texture(DiffuseSampler, texCoord) * ColorModulate;
 
 }

src/testmod/resources/assets/satinrenderlayer/shaders/program/illusion.vsh

@@ -1,11 +1,11 @@
-#version 110
+#version 150
 
-attribute vec4 Position;
+in vec4 Position;
 
 uniform mat4 ProjMat;
 uniform vec2 OutSize;
 
-varying vec2 texCoord;
+out vec2 texCoord;
 
 void main(){
     vec4 outPos = ProjMat * vec4(Position.xy, 0.0, 1.0);