Refactored shader code to use GL20 instead of ARB.

Fixed issue #36: Having issues with some features with a Sponge Forge Server.
Messed with shader to try and fix some issues.

build.gradle

@@ -11,7 +11,7 @@ apply plugin: 'net.minecraftforge.gradle.forge'
 //Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
 
 
-version = "1.12.2-2.9"
+version = "1.12.2-2.10"
 group = "nl.requios.effortlessbuilding" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "effortlessbuilding"
 

src/main/java/nl/requios/effortlessbuilding/BuildConfig.java

@@ -55,7 +55,7 @@ public class BuildConfig {
 
         @Comment({"Determines what blocks can be replaced in survival.",
                  "-1: only blocks that can be harvested by hand (default)",
-                 "0: blocks that can be harvested with wooden or gold tools",
+                 "0: blocks that can be harvested with wooden oref gold tools",
                  "1: blocks that can be harvested with stone tools",
                  "2: blocks that can be harvested with iron tools",
                  "3: blocks that can be harvested with diamond tools",
@@ -65,7 +65,7 @@ public class BuildConfig {
 
         @Comment({"How many placements are remembered for the undo functionality."})
         @RequiresMcRestart
-        public int undoStackSize = 5;
+        public int undoStackSize = 10;
     }
 
     public static class Visuals {

src/main/java/nl/requios/effortlessbuilding/EffortlessBuilding.java

@@ -39,7 +39,7 @@ public class EffortlessBuilding
 {
     public static final String MODID = "effortlessbuilding";
     public static final String NAME = "Effortless Building";
-    public static final String VERSION = "1.12.2-2.9";
+    public static final String VERSION = "1.12.2-2.10";
 
     @Mod.Instance(EffortlessBuilding.MODID)
     public static EffortlessBuilding instance;

src/main/java/nl/requios/effortlessbuilding/buildmode/ModeOptions.java

@@ -1,16 +1,11 @@
 package nl.requios.effortlessbuilding.buildmode;
 
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.resources.I18n;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.util.text.TextFormatting;
-import net.minecraftforge.fml.relauncher.Side;
-import net.minecraftforge.fml.relauncher.SideOnly;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.buildmodifier.ModifierSettingsManager;
 import nl.requios.effortlessbuilding.buildmodifier.UndoRedo;
-import nl.requios.effortlessbuilding.gui.buildmode.RadialMenu;
-import nl.requios.effortlessbuilding.gui.buildmodifier.ModifierSettingsGui;
+import nl.requios.effortlessbuilding.proxy.ClientProxy;
 
 public class ModeOptions {
 
@@ -73,7 +68,6 @@ public class ModeOptions {
     //Called on both client and server
     public static void performAction(EntityPlayer player, ActionEnum action) {
         if (action == null) return;
-        BuildModes.BuildModeEnum currentBuildMode = ModeSettingsManager.getModeSettings(Minecraft.getMinecraft().player).getBuildMode();
 
         switch (action) {
             case UNDO:
@@ -90,7 +84,7 @@ public class ModeOptions {
                 break;
             case OPEN_MODIFIER_SETTINGS:
                 if (player.world.isRemote)
-                    openModifierSettings();
+                    ClientProxy.openModifierSettings();
                 break;
 
             case NORMAL_SPEED:
@@ -132,19 +126,7 @@ public class ModeOptions {
         }
 
         if (player.world.isRemote && action != ActionEnum.REPLACE && action != ActionEnum.OPEN_MODIFIER_SETTINGS) {
-            logAction(action);
+            ClientProxy.logTranslate(action.name);
         }
     }
-
-    //TODO fix client class import giving error on server (nothing happens, it's just ugly)
-    @SideOnly(Side.CLIENT)
-    private static void openModifierSettings() {
-        Minecraft.getMinecraft().displayGuiScreen(new ModifierSettingsGui());
-        RadialMenu.instance.setVisibility(0f);
-    }
-
-    @SideOnly(Side.CLIENT)
-    private static void logAction(ActionEnum action) {
-        EffortlessBuilding.log(Minecraft.getMinecraft().player, I18n.format(action.name), true);
-    }
 }

src/main/java/nl/requios/effortlessbuilding/buildmode/ModeSettingsManager.java

@@ -3,8 +3,6 @@ package nl.requios.effortlessbuilding.buildmode;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraftforge.fml.common.Mod;
-import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import net.minecraftforge.fml.common.gameevent.PlayerEvent;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.capability.ModeCapabilityManager;
 import nl.requios.effortlessbuilding.helper.ReachHelper;

src/main/java/nl/requios/effortlessbuilding/buildmodifier/BlockSet.java

@@ -1,6 +1,5 @@
 package nl.requios.effortlessbuilding.buildmodifier;
 
-import mod.chiselsandbits.api.IBitLocation;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;

src/main/java/nl/requios/effortlessbuilding/buildmodifier/ModifierSettingsManager.java

@@ -3,8 +3,6 @@ package nl.requios.effortlessbuilding.buildmodifier;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraftforge.fml.common.Mod;
-import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import net.minecraftforge.fml.common.gameevent.PlayerEvent;
 import nl.requios.effortlessbuilding.BuildConfig;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.capability.ModifierCapabilityManager;

src/main/java/nl/requios/effortlessbuilding/proxy/ClientProxy.java

@@ -9,6 +9,7 @@ import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureMap;
+import net.minecraft.client.resources.I18n;
 import net.minecraft.client.settings.KeyBinding;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
@@ -80,7 +81,7 @@ public class ClientProxy implements IProxy {
     @Override
     public void init(FMLInitializationEvent event) {
         // register key bindings
-        keyBindings = new KeyBinding[6];
+        keyBindings = new KeyBinding[7];
 
         // instantiate the key bindings
         keyBindings[0] = new KeyBinding("key.effortlessbuilding.hud.desc", KeyConflictContext.UNIVERSAL, Keyboard.KEY_ADD, "key.effortlessbuilding.category");
@@ -96,7 +97,7 @@ public class ClientProxy implements IProxy {
         };
         keyBindings[4] = new KeyBinding("key.effortlessbuilding.undo.desc", KeyConflictContext.IN_GAME, KeyModifier.CONTROL, Keyboard.KEY_Z, "key.effortlessbuilding.category");
         keyBindings[5] = new KeyBinding("key.effortlessbuilding.redo.desc", KeyConflictContext.IN_GAME, KeyModifier.CONTROL, Keyboard.KEY_Y, "key.effortlessbuilding.category");
-//        keyBindings[6] = new KeyBinding("Reload shaders", Keyboard.KEY_TAB, "key.effortlessbuilding.category");
+        keyBindings[6] = new KeyBinding("Reload shaders", Keyboard.KEY_TAB, "key.effortlessbuilding.category");
 
         // register all the key bindings
         for (int i = 0; i < keyBindings.length; ++i) {
@@ -278,6 +279,7 @@ public class ClientProxy implements IProxy {
                 }
             } else if (buildMode == BuildModes.BuildModeEnum.NORMAL_PLUS) {
                 breakCooldown--;
+                if (ModeOptions.getBuildSpeed() == ModeOptions.ActionEnum.FAST_SPEED) breakCooldown = 0;
             }
 
             //EffortlessBuilding.packetHandler.sendToServer(new CancelModeMessage());
@@ -301,16 +303,7 @@ public class ClientProxy implements IProxy {
         //Remember to send packet to server if necessary
         //Show Modifier Settings GUI
         if (keyBindings[0].isPressed()) {
-            //Disabled if max reach is 0, might be set in the config that way.
-            if (ReachHelper.getMaxReach(player) == 0) {
-                EffortlessBuilding.log(player, "Build modifiers are disabled until your reach has increased. Increase your reach with craftable reach upgrades.");
-            } else {
-                if (Minecraft.getMinecraft().currentScreen == null) {
-                    Minecraft.getMinecraft().displayGuiScreen(new ModifierSettingsGui());
-                } else {
-                    player.closeScreen();
-                }
-            }
+            openModifierSettings();
         }
 
         //QuickReplace toggle
@@ -353,6 +346,23 @@ public class ClientProxy implements IProxy {
 
     }
 
+    public static void openModifierSettings() {
+        EntityPlayerSP player = Minecraft.getMinecraft().player;
+
+        RadialMenu.instance.setVisibility(0f);
+
+        //Disabled if max reach is 0, might be set in the config that way.
+        if (ReachHelper.getMaxReach(player) == 0) {
+            EffortlessBuilding.log(player, "Build modifiers are disabled until your reach has increased. Increase your reach with craftable reach upgrades.");
+        } else {
+            if (Minecraft.getMinecraft().currentScreen == null) {
+                Minecraft.getMinecraft().displayGuiScreen(new ModifierSettingsGui());
+            } else {
+                player.closeScreen();
+            }
+        }
+    }
+
     @SubscribeEvent
     public static void onGuiOpen(GuiOpenEvent event) {
         EntityPlayer player = Minecraft.getMinecraft().player;
@@ -374,4 +384,8 @@ public class ClientProxy implements IProxy {
         return player.rayTrace(raytraceRange, 1f);
 //        return world.rayTraceBlocks(start, end, false, false, false);
     }
+
+    public static void logTranslate(String key) {
+        EffortlessBuilding.log(Minecraft.getMinecraft().player, I18n.format(key), true);
+    }
 }

src/main/java/nl/requios/effortlessbuilding/render/BlockPreviewRenderer.java

@@ -5,13 +5,11 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.EntityPlayerSP;
 import net.minecraft.client.renderer.BlockRendererDispatcher;
-import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.OpenGlHelper;
 import net.minecraft.client.renderer.texture.TextureMap;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumFacing;
-import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.SoundCategory;
 import net.minecraft.util.math.*;
 import net.minecraftforge.fml.relauncher.Side;
@@ -26,14 +24,13 @@ import nl.requios.effortlessbuilding.buildmodifier.BuildModifiers;
 import nl.requios.effortlessbuilding.buildmodifier.ModifierSettingsManager;
 import nl.requios.effortlessbuilding.buildmodifier.ModifierSettingsManager.ModifierSettings;
 import nl.requios.effortlessbuilding.compatibility.CompatHelper;
-import nl.requios.effortlessbuilding.helper.InventoryHelper;
 import nl.requios.effortlessbuilding.helper.ReachHelper;
 import nl.requios.effortlessbuilding.helper.SurvivalHelper;
 import nl.requios.effortlessbuilding.item.ItemRandomizerBag;
 import nl.requios.effortlessbuilding.proxy.ClientProxy;
 import org.lwjgl.opengl.ARBMultitexture;
-import org.lwjgl.opengl.ARBShaderObjects;
 import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL20;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -72,7 +69,8 @@ public class BlockPreviewRenderer {
 
     private static List<PlacedData> placedDataList = new ArrayList<>();
 
-    private static final int secondaryTextureUnit = 7;
+    private static final int primaryTextureUnit = 0;
+    private static final int secondaryTextureUnit = 1;
 
     public static void render(EntityPlayer player, ModifierSettings modifierSettings, ModeSettings modeSettings) {
 
@@ -372,41 +370,40 @@ public class BlockPreviewRenderer {
                                                             final boolean highlight, final boolean red) {
         Minecraft mc = Minecraft.getMinecraft();
         return (Integer shader) -> {
-            int percentileUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "dissolve");
-            int highlightUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "highlight");
-            int redUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "red");
-            int blockposUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "blockpos");
-            int firstposUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "firstpos");
-            int secondposUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "secondpos");
-            int imageUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "image");
-            int maskUniform = ARBShaderObjects.glGetUniformLocationARB(shader, "mask");
+            int percentileUniform = GL20.glGetUniformLocation(shader, "dissolve");
+            int highlightUniform = GL20.glGetUniformLocation(shader, "highlight");
+            int redUniform = GL20.glGetUniformLocation(shader, "red");
+            int blockposUniform = GL20.glGetUniformLocation(shader, "blockpos");
+            int firstposUniform = GL20.glGetUniformLocation(shader, "firstpos");
+            int secondposUniform = GL20.glGetUniformLocation(shader, "secondpos");
+            int imageUniform = GL20.glGetUniformLocation(shader, "image");
+            int maskUniform = GL20.glGetUniformLocation(shader, "mask");
 
             //image
-            OpenGlHelper.setActiveTexture(ARBMultitexture.GL_TEXTURE0_ARB);
+            GL20.glUniform1i(imageUniform, primaryTextureUnit);
+            OpenGlHelper.setActiveTexture(ARBMultitexture.GL_TEXTURE0_ARB + primaryTextureUnit);
+
             GL11.glBindTexture(GL11.GL_TEXTURE_2D, mc.renderEngine.getTexture(TextureMap.LOCATION_BLOCKS_TEXTURE).getGlTextureId());
-            ARBShaderObjects.glUniform1iARB(imageUniform, 0);
 
-            OpenGlHelper.setActiveTexture(ARBMultitexture.GL_TEXTURE0_ARB + secondaryTextureUnit);
-
-            GlStateManager.enableTexture2D();
-            GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
+//            GlStateManager.enableTexture2D();
+//            GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
 
             //mask
-            GL11.glBindTexture(GL11.GL_TEXTURE_2D,
-                    mc.renderEngine.getTexture(new ResourceLocation(EffortlessBuilding.MODID, "textures/shader_mask.png")).getGlTextureId());
-            ARBShaderObjects.glUniform1iARB(maskUniform, secondaryTextureUnit);
+            GL20.glUniform1i(maskUniform, secondaryTextureUnit);
+            OpenGlHelper.setActiveTexture(ARBMultitexture.GL_TEXTURE0_ARB + secondaryTextureUnit);
+            GL11.glBindTexture(GL11.GL_TEXTURE_2D, mc.renderEngine.getTexture(ShaderHandler.shaderMaskTextureLocation).getGlTextureId());
 
             //blockpos
-            ARBShaderObjects.glUniform3fARB(blockposUniform, (float) blockpos.x, (float) blockpos.y, (float) blockpos.z);
-            ARBShaderObjects.glUniform3fARB(firstposUniform, (float) firstpos.x, (float) firstpos.y, (float) firstpos.z);
-            ARBShaderObjects.glUniform3fARB(secondposUniform, (float) secondpos.x, (float) secondpos.y, (float) secondpos.z);
+            GL20.glUniform3f(blockposUniform, (float) blockpos.x, (float) blockpos.y, (float) blockpos.z);
+            GL20.glUniform3f(firstposUniform, (float) firstpos.x, (float) firstpos.y, (float) firstpos.z);
+            GL20.glUniform3f(secondposUniform, (float) secondpos.x, (float) secondpos.y, (float) secondpos.z);
 
             //dissolve
-            ARBShaderObjects.glUniform1fARB(percentileUniform, dissolve);
+            GL20.glUniform1f(percentileUniform, dissolve);
             //highlight
-            ARBShaderObjects.glUniform1iARB(highlightUniform, highlight ? 1 : 0);
+            GL20.glUniform1i(highlightUniform, highlight ? 1 : 0);
             //red
-            ARBShaderObjects.glUniform1iARB(redUniform, red ? 1 : 0);
+            GL20.glUniform1i(redUniform, red ? 1 : 0);
         };
     }
 

src/main/java/nl/requios/effortlessbuilding/render/RenderHandler.java

@@ -186,7 +186,7 @@ public class RenderHandler implements IWorldEventListener {
         GL11.glEnable(GL11.GL_CULL_FACE);
         GL11.glEnable(GL11.GL_TEXTURE_2D);
         Minecraft.getMinecraft().renderEngine.bindTexture(TextureMap.LOCATION_BLOCKS_TEXTURE);
-        Minecraft.getMinecraft().renderEngine.bindTexture(new ResourceLocation(EffortlessBuilding.MODID, "textures/shader_mask.png"));
+        Minecraft.getMinecraft().renderEngine.bindTexture(ShaderHandler.shaderMaskTextureLocation);
 
         GlStateManager.enableBlend();
         GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
@@ -196,6 +196,7 @@ public class RenderHandler implements IWorldEventListener {
     protected static void endBlockPreviews() {
         ShaderHandler.releaseShader();
         GlStateManager.disableBlend();
+
         GL11.glPopAttrib();
     }
 

src/main/java/nl/requios/effortlessbuilding/render/ShaderHandler.java

@@ -13,6 +13,7 @@
 package nl.requios.effortlessbuilding.render;
 
 import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.util.ResourceLocation;
 import nl.requios.effortlessbuilding.BuildConfig;
 import nl.requios.effortlessbuilding.EffortlessBuilding;
 import nl.requios.effortlessbuilding.proxy.ClientProxy;
@@ -27,8 +28,9 @@ import java.util.function.Consumer;
 
 public final class ShaderHandler {
 
-    private static final int VERT_ST = ARBVertexShader.GL_VERTEX_SHADER_ARB;
-    private static final int FRAG_ST = ARBFragmentShader.GL_FRAGMENT_SHADER_ARB;
+
+    private static final int VERT_ST = GL20.GL_VERTEX_SHADER;
+    private static final int FRAG_ST = GL20.GL_FRAGMENT_SHADER;
 
     private static final int VERT = 1;
     private static final int FRAG = 2;
@@ -39,6 +41,8 @@ public final class ShaderHandler {
     public static int rawColor;
     public static int dissolve;
 
+    public static ResourceLocation shaderMaskTextureLocation = new ResourceLocation(EffortlessBuilding.MODID, "textures/shader_mask.png");
+
     public static void init() {
         if(!doUseShaders())
             return;
@@ -51,11 +55,11 @@ public final class ShaderHandler {
         if(!doUseShaders())
             return;
 
-        ARBShaderObjects.glUseProgramObjectARB(shader);
+        GL20.glUseProgram(shader);
 
         if(shader != 0) {
-            int time = ARBShaderObjects.glGetUniformLocationARB(shader, "time");
-            ARBShaderObjects.glUniform1iARB(time, ClientProxy.ticksInGame);
+            int time = GL20.glGetUniformLocation(shader, "time");
+            GL20.glUniform1i(time, ClientProxy.ticksInGame);
 
             if(callback != null)
                 callback.accept(shader);
@@ -71,7 +75,7 @@ public final class ShaderHandler {
     }
 
     public static boolean doUseShaders() {
-        return BuildConfig.visuals.useShaders && OpenGlHelper.shadersSupported;
+        return BuildConfig.visuals.useShaders && OpenGlHelper.shadersSupported && OpenGlHelper.openGL21; //Only GL2.1 shaders
     }
 
     private static int createProgram(String s, int sides) {
@@ -91,24 +95,24 @@ public final class ShaderHandler {
         if(frag != null)
             fragId = createShader(frag, FRAG_ST);
 
-        program = ARBShaderObjects.glCreateProgramObjectARB();
+        program = GL20.glCreateProgram();
         if(program == 0)
             return 0;
 
         if(vert != null)
-            ARBShaderObjects.glAttachObjectARB(program, vertId);
+            GL20.glAttachShader(program, vertId);
         if(frag != null)
-            ARBShaderObjects.glAttachObjectARB(program, fragId);
+            GL20.glAttachShader(program, fragId);
 
-        ARBShaderObjects.glLinkProgramARB(program);
-        if(ARBShaderObjects.glGetObjectParameteriARB(program, ARBShaderObjects.GL_OBJECT_LINK_STATUS_ARB) == GL11.GL_FALSE) {
-            EffortlessBuilding.logger.log(Level.ERROR, getLogInfo(program));
+        GL20.glLinkProgram(program);
+        if(GL20.glGetProgrami(program, GL20.GL_LINK_STATUS) == GL11.GL_FALSE) {
+            EffortlessBuilding.logger.log(Level.ERROR, getProgramLogInfo(program));
             return 0;
         }
 
-        ARBShaderObjects.glValidateProgramARB(program);
-        if (ARBShaderObjects.glGetObjectParameteriARB(program, ARBShaderObjects.GL_OBJECT_VALIDATE_STATUS_ARB) == GL11.GL_FALSE) {
-            EffortlessBuilding.logger.log(Level.ERROR, getLogInfo(program));
+        GL20.glValidateProgram(program);
+        if (GL20.glGetProgrami(program, GL20.GL_VALIDATE_STATUS) == GL11.GL_FALSE) {
+            EffortlessBuilding.logger.log(Level.ERROR, getProgramLogInfo(program));
             return 0;
         }
 
@@ -118,28 +122,32 @@ public final class ShaderHandler {
     private static int createShader(String filename, int shaderType){
         int shader = 0;
         try {
-            shader = ARBShaderObjects.glCreateShaderObjectARB(shaderType);
+            shader = GL20.glCreateShader(shaderType);
 
             if(shader == 0)
                 return 0;
 
-            ARBShaderObjects.glShaderSourceARB(shader, readFileAsString(filename));
-            ARBShaderObjects.glCompileShaderARB(shader);
+            GL20.glShaderSource(shader, readFileAsString(filename));
+            GL20.glCompileShader(shader);
 
-            if (ARBShaderObjects.glGetObjectParameteriARB(shader, ARBShaderObjects.GL_OBJECT_COMPILE_STATUS_ARB) == GL11.GL_FALSE)
-                throw new RuntimeException("Error creating shader: " + getLogInfo(shader));
+            if (GL20.glGetShaderi(shader, GL20.GL_COMPILE_STATUS) == GL11.GL_FALSE)
+                throw new RuntimeException("Error creating shader: " + getShaderLogInfo(shader));
 
             return shader;
         }
         catch(Exception e) {
-            ARBShaderObjects.glDeleteObjectARB(shader);
+            GL20.glDeleteShader(shader);
             e.printStackTrace();
             return -1;
         }
     }
 
-    private static String getLogInfo(int obj) {
-        return ARBShaderObjects.glGetInfoLogARB(obj, ARBShaderObjects.glGetObjectParameteriARB(obj, ARBShaderObjects.GL_OBJECT_INFO_LOG_LENGTH_ARB));
+    private static String getProgramLogInfo(int program) {
+        return GL20.glGetProgramInfoLog(program, GL20.glGetProgrami(program, GL20.GL_INFO_LOG_LENGTH));
+    }
+
+    private static String getShaderLogInfo(int shader) {
+        return GL20.glGetShaderInfoLog(shader, GL20.glGetShaderi(shader, GL20.GL_INFO_LOG_LENGTH));
     }
 
     private static String readFileAsString(String filename) throws Exception {