Update GLSLParser and improve rendering logic

src/main/java/net/vulkanmod/config/Platform.java

@@ -73,7 +73,7 @@ private static String determineDE() {
     }
 
     public static boolean isWindows() {
-        return OS == Util.OS.LINUX;
+        return OS == Util.OS.WINDOWS;
     }
 
     public static boolean isLinux() {

src/main/java/net/vulkanmod/gl/GlUtil.java

@@ -53,7 +53,7 @@ public static ByteBuffer BGRAtoRGBA_buffer(ByteBuffer in) {
         for (int i = 0; i < outSize ; i += 4) {
             int color = MemoryUtil.memGetInt(srcPtr + i);
 
-            color = (color << 24) & 0xFF000000 | (color >> 8) & 0xFFFFFF;
+            color = (color & 0xFF00FF00) | ((color & 0x00FF0000) >>> 16) | ((color & 0x000000FF) << 16);
 
             MemoryUtil.memPutInt(ptr + i, color);
         }

src/main/java/net/vulkanmod/gl/VkGlBuffer.java

@@ -41,7 +41,7 @@ public static void glBindBuffer(int target, int buffer) {
             case GL32.GL_PIXEL_PACK_BUFFER -> pixelPackBufferBound = glBuffer;
             case GL32.GL_PIXEL_UNPACK_BUFFER -> pixelUnpackBufferBound = glBuffer;
             case GL32.GL_ARRAY_BUFFER -> arrayBufferBound = glBuffer;
-            default -> throw new IllegalStateException("Unexpected value: " + target);
+            default -> {}
         }
     }
 

src/main/java/net/vulkanmod/gl/VkGlFramebuffer.java

@@ -90,13 +90,17 @@ public static void deleteFramebuffer(int id) {
             return;
         }
 
-        boundFramebuffer = map.remove(id);
+        VkGlFramebuffer glFramebuffer = map.remove(id);
 
-        if (boundFramebuffer == null)
-            throw new NullPointerException("bound framebuffer is null");
-
-        boundFramebuffer.cleanUp(true);
-        boundFramebuffer = null;
+        if (glFramebuffer != null) {
+            if (boundFramebuffer == glFramebuffer) {
+                boundFramebuffer = null;
+            }
+            if (readFramebuffer == glFramebuffer) {
+                readFramebuffer = null;
+            }
+            glFramebuffer.cleanUp(true);
+        }
     }
 
     public static void framebufferTexture2D(int target, int attachment, int texTarget, int texture, int level) {

src/main/java/net/vulkanmod/render/chunk/RenderSection.java

@@ -298,8 +298,7 @@ public void resetDrawParameters(TerrainRenderType renderType) {
             AreaBuffer areaBuffer = drawBuffers.getAreaBuffer(renderType);
             int vertexOffset = DrawParametersBuffer.getVertexOffset(ptr);
             if (areaBuffer != null && vertexOffset != -1) {
-                int segmentOffset = vertexOffset * drawBuffers.vertexSize;
-                areaBuffer.setSegmentFree(segmentOffset);
+                areaBuffer.freeSegment(vertexOffset);
             }
 
             DrawParametersBuffer.resetParameters(ptr);

src/main/java/net/vulkanmod/vulkan/shader/converter/GLSLParser.java

@@ -146,7 +146,7 @@ private void parseVersion() {
             throw new IllegalStateException("First glsl line must contain #version");
         }
 
-        advanceToken();
+        advanceToken(true);
 
         if (!currentToken.value.startsWith("version")) {
             throw new IllegalStateException("First glsl line must contain #version");