package game.renderer;

import game.window.WCF;

public class GlState
{
    private static GlState.AlphaState alphaState = new GlState.AlphaState();
    private static GlState.BooleanState lightingState = new GlState.BooleanState(2896);
    private static GlState.BooleanState[] lightState = new GlState.BooleanState[8];
    private static GlState.ColorMaterialState colorMaterialState = new GlState.ColorMaterialState();
    private static GlState.BlendState blendState = new GlState.BlendState();
    private static GlState.DepthState depthState = new GlState.DepthState();
    private static GlState.FogState fogState = new GlState.FogState();
    private static GlState.CullState cullState = new GlState.CullState();
    private static GlState.PolygonOffsetState polygonOffsetState = new GlState.PolygonOffsetState();
//    private static GlState.ColorLogicState colorLogicState = new GlState.ColorLogicState();
//    private static GlState.TexGenState texGenState = new GlState.TexGenState();
    private static GlState.ClearState clearState = new GlState.ClearState();
//    private static GlState.StencilState stencilState = new GlState.StencilState();
    private static GlState.BooleanState normalizeState = new GlState.BooleanState(2977);
    private static int activeTextureUnit = 0;
    private static GlState.TextureState[] textureState = new GlState.TextureState[8];
    private static int activeShadeModel = 7425;
    private static GlState.BooleanState rescaleNormalState = new GlState.BooleanState(32826);
    private static GlState.ColorMask colorMaskState = new GlState.ColorMask();
    private static GlState.Color colorState = new GlState.Color();

    public static void disableAlpha()
    {
        alphaState.alphaTest.setDisabled();
    }

    public static void enableAlpha()
    {
        alphaState.alphaTest.setEnabled();
    }

    public static void alphaFunc(int func, float ref)
    {
        if (func != alphaState.func || ref != alphaState.ref)
        {
            alphaState.func = func;
            alphaState.ref = ref;
            WCF.glAlphaFunc(func, ref);
        }
    }

    public static void enableLighting()
    {
        lightingState.setEnabled();
    }

    public static void disableLighting()
    {
        lightingState.setDisabled();
    }

    public static void enableLight(int light)
    {
        lightState[light].setEnabled();
    }

    public static void disableLight(int light)
    {
        lightState[light].setDisabled();
    }

    public static void enableColorMaterial()
    {
        colorMaterialState.colorMaterial.setEnabled();
    }

    public static void disableColorMaterial()
    {
        colorMaterialState.colorMaterial.setDisabled();
    }

    public static void colorMaterial(int face, int mode)
    {
        if (face != colorMaterialState.face || mode != colorMaterialState.mode)
        {
            colorMaterialState.face = face;
            colorMaterialState.mode = mode;
            WCF.glColorMaterial(face, mode);
        }
    }

    public static void disableDepth()
    {
        depthState.depthTest.setDisabled();
    }

    public static void enableDepth()
    {
        depthState.depthTest.setEnabled();
    }

    public static void depthFunc(int depthFunc)
    {
        if (depthFunc != depthState.depthFunc)
        {
            depthState.depthFunc = depthFunc;
            WCF.glDepthFunc(depthFunc);
        }
    }

    public static void depthMask(boolean flagIn)
    {
        if (flagIn != depthState.maskEnabled)
        {
            depthState.maskEnabled = flagIn;
            WCF.glDepthMask(flagIn);
        }
    }

    public static void disableBlend()
    {
        blendState.blend.setDisabled();
    }

    public static void enableBlend()
    {
        blendState.blend.setEnabled();
    }

    public static void blendFunc(int srcFactor, int dstFactor)
    {
        if (srcFactor != blendState.srcFactor || dstFactor != blendState.dstFactor)
        {
            blendState.srcFactor = srcFactor;
            blendState.dstFactor = dstFactor;
            WCF.glBlendFunc(srcFactor, dstFactor);
        }
    }

    public static void tryBlendFuncSeparate(int srcFactor, int dstFactor, int srcFactorAlpha, int dstFactorAlpha)
    {
        if (srcFactor != blendState.srcFactor || dstFactor != blendState.dstFactor || srcFactorAlpha != blendState.srcFactorAlpha || dstFactorAlpha != blendState.dstFactorAlpha)
        {
            blendState.srcFactor = srcFactor;
            blendState.dstFactor = dstFactor;
            blendState.srcFactorAlpha = srcFactorAlpha;
            blendState.dstFactorAlpha = dstFactorAlpha;
            WCF.glBlendFuncSeparate(srcFactor, dstFactor, srcFactorAlpha, dstFactorAlpha);
        }
    }

    public static void enableFog()
    {
    	if(fogState.enabled)
    		fogState.fog.setEnabled();
    }

    public static void disableFog()
    {
//    	if(fogState.enabled)
    	fogState.fog.setDisabled();
    }

    public static void setFogEnabled(boolean param)
    {
        if (param != fogState.enabled)
        {
            fogState.enabled = param;
        }
        if(param)
        	enableFog();
        else
        	disableFog();
    }

    public static void setFog(int param)
    {
        if (param != fogState.mode)
        {
            fogState.mode = param;
            WCF.glFogi(WCF.GL_FOG_MODE, param);
        }
    }

    public static void setFogDensity(float param)
    {
        if (param != fogState.density)
        {
            fogState.density = param;
            WCF.glFogf(WCF.GL_FOG_DENSITY, param);
        }
    }

    public static void setFogStart(float param)
    {
        if (param != fogState.start)
        {
            fogState.start = param;
            WCF.glFogf(WCF.GL_FOG_START, param);
        }
    }

    public static void setFogEnd(float param)
    {
        if (param != fogState.end)
        {
            fogState.end = param;
            WCF.glFogf(WCF.GL_FOG_END, param);
        }
    }

    public static void enableCull()
    {
        cullState.cullFace.setEnabled();
    }

    public static void disableCull()
    {
        cullState.cullFace.setDisabled();
    }

    public static void cullFace(int mode)
    {
        if (mode != cullState.mode)
        {
            cullState.mode = mode;
            WCF.glCullFace(mode);
        }
    }

    public static void enablePolygonOffset()
    {
        polygonOffsetState.polygonOffsetFill.setEnabled();
    }

    public static void disablePolygonOffset()
    {
        polygonOffsetState.polygonOffsetFill.setDisabled();
    }

    public static void doPolygonOffset(float factor, float units)
    {
        if (factor != polygonOffsetState.factor || units != polygonOffsetState.units)
        {
            polygonOffsetState.factor = factor;
            polygonOffsetState.units = units;
            WCF.glPolygonOffset(factor, units);
        }
    }

//    public static void enableColorLogic()
//    {
//        colorLogicState.colorLogicOp.setEnabled();
//    }
//
//    public static void disableColorLogic()
//    {
//        colorLogicState.colorLogicOp.setDisabled();
//    }
//
//    public static void colorLogicOp(int opcode)
//    {
//        if (opcode != colorLogicState.opcode)
//        {
//            colorLogicState.opcode = opcode;
//            SKC.glLogicOp(opcode);
//        }
//    }

//    public static void enableTexGenCoord(GlState.TexGen p_179087_0_)
//    {
//        texGenCoord(p_179087_0_).textureGen.setEnabled();
//    }
//
//    public static void disableTexGenCoord(GlState.TexGen p_179100_0_)
//    {
//        texGenCoord(p_179100_0_).textureGen.setDisabled();
//    }
//
//    public static void texGen(GlState.TexGen texGen, int param)
//    {
//        GlState.TexGenCoord glstatemanager$texgencoord = texGenCoord(texGen);
//
//        if (param != glstatemanager$texgencoord.param)
//        {
//            glstatemanager$texgencoord.param = param;
//            SKC.glTexGeni(glstatemanager$texgencoord.coord, SKC.GL_TEXTURE_GEN_MODE, param);
//        }
//    }
//
//    public static void texGen(GlState.TexGen p_179105_0_, int pname, FloatBuffer params)
//    {
//        SKC.glTexGen(texGenCoord(p_179105_0_).coord, pname, params);
//    }
//
//    private static GlState.TexGenCoord texGenCoord(GlState.TexGen p_179125_0_)
//    {
//        switch (p_179125_0_)
//        {
//            case S:
//                return texGenState.s;
//
//            case T:
//                return texGenState.t;
//
//            case R:
//                return texGenState.r;
//
//            case Q:
//                return texGenState.q;
//
//            default:
//                return texGenState.s;
//        }
//    }

    public static void setActiveTexture(int texture)
    {
        if (activeTextureUnit != texture - WCF.GL_TEXTURE0)
        {
            activeTextureUnit = texture - WCF.GL_TEXTURE0;
            WCF.glActiveTexture(texture);
        }
    }

    public static void enableTexture2D()
    {
        textureState[activeTextureUnit].texture2DState.setEnabled();
    }

    public static void disableTexture2D()
    {
        textureState[activeTextureUnit].texture2DState.setDisabled();
    }

    public static void deleteTexture(int texture)
    {
        WCF.glDeleteTextures(texture);

        for (GlState.TextureState glstatemanager$texturestate : textureState)
        {
            if (glstatemanager$texturestate.textureName == texture)
            {
                glstatemanager$texturestate.textureName = -1;
            }
        }
    }

    public static void bindTexture(int texture)
    {
        if (texture != textureState[activeTextureUnit].textureName)
        {
            textureState[activeTextureUnit].textureName = texture;
            WCF.glBindTexture(texture);
        }
    }

    public static void resetTextures()
    {
        textureState[0].textureName = 0;
        textureState[1].textureName = 0;
    }

    public static void enableNormalize()
    {
        normalizeState.setEnabled();
    }

    public static void disableNormalize()
    {
        normalizeState.setDisabled();
    }

    public static void shadeModel(int mode)
    {
        if (mode != activeShadeModel)
        {
            activeShadeModel = mode;
            WCF.glShadeModel(mode);
        }
    }

    public static void enableRescaleNormal()
    {
        rescaleNormalState.setEnabled();
    }

    public static void disableRescaleNormal()
    {
        rescaleNormalState.setDisabled();
    }

    public static void colorMask(boolean red, boolean green, boolean blue, boolean alpha)
    {
        if (red != colorMaskState.red || green != colorMaskState.green || blue != colorMaskState.blue || alpha != colorMaskState.alpha)
        {
            colorMaskState.red = red;
            colorMaskState.green = green;
            colorMaskState.blue = blue;
            colorMaskState.alpha = alpha;
            WCF.glColorMask(red, green, blue, alpha);
        }
    }

    public static void clearDepth(double depth)
    {
        if (depth != clearState.depth)
        {
            clearState.depth = depth;
            WCF.glClearDepth(depth);
        }
    }

    public static void clearColor(float red, float green, float blue, float alpha)
    {
        if (red != clearState.color.red || green != clearState.color.green || blue != clearState.color.blue || alpha != clearState.color.alpha)
        {
            clearState.color.red = red;
            clearState.color.green = green;
            clearState.color.blue = blue;
            clearState.color.alpha = alpha;
            WCF.glClearColor(red, green, blue, alpha);
        }
    }

    public static void color(float colorRed, float colorGreen, float colorBlue, float colorAlpha)
    {
        if (colorRed != colorState.red || colorGreen != colorState.green || colorBlue != colorState.blue || colorAlpha != colorState.alpha)
        {
            colorState.red = colorRed;
            colorState.green = colorGreen;
            colorState.blue = colorBlue;
            colorState.alpha = colorAlpha;
            WCF.glColor4f(colorRed, colorGreen, colorBlue, colorAlpha);
        }
    }

    public static void resetColor()
    {
        colorState.red = colorState.green = colorState.blue = colorState.alpha = -1.0F;
    }

    public static void resetClear()
    {
    	clearState.color.red = clearState.color.green = clearState.color.blue = clearState.color.alpha = -1.0F;
    }

    static
    {
        for (int i = 0; i < 8; ++i)
        {
            lightState[i] = new GlState.BooleanState(16384 + i);
        }

        for (int j = 0; j < 8; ++j)
        {
            textureState[j] = new GlState.TextureState();
        }
    }

    static class AlphaState
    {
        public GlState.BooleanState alphaTest;
        public int func;
        public float ref;

        private AlphaState()
        {
            this.alphaTest = new GlState.BooleanState(3008);
            this.func = 519;
            this.ref = -1.0F;
        }
    }

    static class BlendState
    {
        public GlState.BooleanState blend;
        public int srcFactor;
        public int dstFactor;
        public int srcFactorAlpha;
        public int dstFactorAlpha;

        private BlendState()
        {
            this.blend = new GlState.BooleanState(3042);
            this.srcFactor = 1;
            this.dstFactor = 0;
            this.srcFactorAlpha = 1;
            this.dstFactorAlpha = 0;
        }
    }

    static class BooleanState
    {
        private final int capability;
        private boolean currentState = false;

        public BooleanState(int capabilityIn)
        {
            this.capability = capabilityIn;
        }

        public void setDisabled()
        {
            this.setState(false);
        }

        public void setEnabled()
        {
            this.setState(true);
        }

        public void setState(boolean state)
        {
            if (state != this.currentState)
            {
                this.currentState = state;

                if (state)
                {
                    WCF.glEnable(this.capability);
                }
                else
                {
                    WCF.glDisable(this.capability);
                }
            }
        }
    }

    static class ClearState
    {
        public double depth;
        public GlState.Color color;
        public int field_179204_c;

        private ClearState()
        {
            this.depth = 1.0D;
            this.color = new GlState.Color(0.0F, 0.0F, 0.0F, 0.0F);
            this.field_179204_c = 0;
        }
    }

    static class Color
    {
        public float red = 1.0F;
        public float green = 1.0F;
        public float blue = 1.0F;
        public float alpha = 1.0F;

        public Color()
        {
        }

        public Color(float redIn, float greenIn, float blueIn, float alphaIn)
        {
            this.red = redIn;
            this.green = greenIn;
            this.blue = blueIn;
            this.alpha = alphaIn;
        }
    }

    static class ColorLogicState
    {
        public GlState.BooleanState colorLogicOp;
        public int opcode;

        private ColorLogicState()
        {
            this.colorLogicOp = new GlState.BooleanState(3058);
            this.opcode = 5379;
        }
    }

    static class ColorMask
    {
        public boolean red;
        public boolean green;
        public boolean blue;
        public boolean alpha;

        private ColorMask()
        {
            this.red = true;
            this.green = true;
            this.blue = true;
            this.alpha = true;
        }
    }

    static class ColorMaterialState
    {
        public GlState.BooleanState colorMaterial;
        public int face;
        public int mode;

        private ColorMaterialState()
        {
            this.colorMaterial = new GlState.BooleanState(WCF.GL_COLOR_MATERIAL);
            this.face = WCF.GL_FRONT_AND_BACK;
            this.mode = WCF.GL_AMBIENT_AND_DIFFUSE;
        }
    }

    static class CullState
    {
        public GlState.BooleanState cullFace;
        public int mode;

        private CullState()
        {
            this.cullFace = new GlState.BooleanState(2884);
            this.mode = 1029;
        }
    }

    static class DepthState
    {
        public GlState.BooleanState depthTest;
        public boolean maskEnabled;
        public int depthFunc;

        private DepthState()
        {
            this.depthTest = new GlState.BooleanState(2929);
            this.maskEnabled = true;
            this.depthFunc = 513;
        }
    }

    static class FogState
    {
        public GlState.BooleanState fog;
        public boolean enabled;
        public int mode;
        public float density;
        public float start;
        public float end;

        private FogState()
        {
            this.fog = new GlState.BooleanState(WCF.GL_FOG);
            this.enabled = true;
            this.mode = WCF.GL_EXP;
            this.density = 1.0F;
            this.start = 0.0F;
            this.end = 1.0F;
        }
    }

    static class PolygonOffsetState
    {
        public GlState.BooleanState polygonOffsetFill;
        public GlState.BooleanState polygonOffsetLine;
        public float factor;
        public float units;

        private PolygonOffsetState()
        {
            this.polygonOffsetFill = new GlState.BooleanState(32823);
            this.polygonOffsetLine = new GlState.BooleanState(10754);
            this.factor = 0.0F;
            this.units = 0.0F;
        }
    }

    static class StencilFunc
    {
        public int field_179081_a;
        public int field_179079_b;
        public int field_179080_c;

        private StencilFunc()
        {
            this.field_179081_a = 519;
            this.field_179079_b = 0;
            this.field_179080_c = -1;
        }
    }

//    static class StencilState
//    {
//        public GlState.StencilFunc field_179078_a;
//        public int field_179076_b;
//        public int field_179077_c;
//        public int field_179074_d;
//        public int field_179075_e;
//
//        private StencilState()
//        {
//            this.field_179078_a = new GlState.StencilFunc();
//            this.field_179076_b = -1;
//            this.field_179077_c = 7680;
//            this.field_179074_d = 7680;
//            this.field_179075_e = 7680;
//        }
//    }

//    public static enum TexGen
//    {
//        S,
//        T,
//        R,
//        Q;
//    }

//    static class TexGenCoord
//    {
//        public GlState.BooleanState textureGen;
//        public int coord;
//        public int param = -1;
//
//        public TexGenCoord(int p_i46254_1_, int p_i46254_2_)
//        {
//            this.coord = p_i46254_1_;
//            this.textureGen = new GlState.BooleanState(p_i46254_2_);
//        }
//    }
//
//    static class TexGenState
//    {
//        public GlState.TexGenCoord s;
//        public GlState.TexGenCoord t;
//        public GlState.TexGenCoord r;
//        public GlState.TexGenCoord q;
//
//        private TexGenState()
//        {
//            this.s = new GlState.TexGenCoord(8192, 3168);
//            this.t = new GlState.TexGenCoord(8193, 3169);
//            this.r = new GlState.TexGenCoord(8194, 3170);
//            this.q = new GlState.TexGenCoord(8195, 3171);
//        }
//    }

    static class TextureState
    {
        public GlState.BooleanState texture2DState;
        public int textureName;

        private TextureState()
        {
            this.texture2DState = new GlState.BooleanState(3553);
            this.textureName = 0;
        }
    }
}