Move MixinShader into 1.7.10 project

versions/1.7.10/src/main/java/com/replaymod/compat/shaders/mixin/MixinShaders.java

@@ -0,0 +1,52 @@
+//#if MC<=10710
+package com.replaymod.compat.shaders.mixin;
+
+import com.replaymod.render.hooks.EntityRendererHandler;
+import com.replaymod.replay.ReplayHandler;
+import com.replaymod.replay.ReplayModReplay;
+import net.minecraft.client.Minecraft;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Pseudo
+@Mixin(targets = "shadersmod/client/Shaders", remap = false)
+public abstract class MixinShaders {
+
+    @Shadow static Minecraft mc;
+    @Shadow static long systemTime;
+    @Shadow static long lastSystemTime;
+    @Shadow static long diffSystemTime;
+    @Shadow static int frameCounter;
+    @Shadow static float frameTime;
+    @Shadow static float frameTimeCounter;
+
+    @Redirect(method = "beginRender", at = @At(value = "INVOKE", target = "Ljava/lang/System;currentTimeMillis()J"))
+    private static long replayModCompat_currentTimeMillis() {
+        ReplayHandler replayHandler = ReplayModReplay.instance.getReplayHandler();
+        if (replayHandler != null) {
+            systemTime = replayHandler.getReplaySender().currentTimeStamp();
+
+            // We need to manipulate all the other previous-frame-time-based variables too
+
+            lastSystemTime = 0; // Draw all frames as if they were the first ones
+            // diffSystemTime will be set to 0 by Shaders
+            // frameTime will be set to 0 by Shaders
+            frameTimeCounter = systemTime / 1000f; // will be %= 3600f by Shaders
+
+            // Set frameCounter only if rendering is in progress
+            EntityRendererHandler entityRendererHandler =
+                    ((EntityRendererHandler.IEntityRenderer) mc.entityRenderer).replayModRender_getHandler();
+            if (entityRendererHandler != null) {
+                frameCounter = entityRendererHandler.getRenderInfo().getFramesDone();
+            }
+
+            return systemTime;
+        }
+        return System.currentTimeMillis();
+    }
+
+}
+//#endif