package net.minecraft.client.renderer;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import java.util.Arrays;
import java.util.PriorityQueue;
import net.minecraft.client.shader.TesselatorVertexState;
import net.minecraft.client.util.QuadComparator;
import org.lwjgl.opengl.GL11;
@SideOnly(Side.CLIENT)
public class Tessellator
{
private static int nativeBufferSize = 0x200000;
private static int trivertsInBuffer = (nativeBufferSize / 48) * 6;
public static boolean renderingWorldRenderer = false;
public boolean defaultTexture = false;
private int rawBufferSize = 0;
public int textureID = 0;
/** The byte buffer used for GL allocation. */
private static ByteBuffer byteBuffer = GLAllocation.createDirectByteBuffer(nativeBufferSize * 4);
/** The same memory as byteBuffer, but referenced as an integer buffer. */
private static IntBuffer intBuffer = byteBuffer.asIntBuffer();
/** The same memory as byteBuffer, but referenced as an float buffer. */
private static FloatBuffer floatBuffer = byteBuffer.asFloatBuffer();
/** The same memory as byteBuffer, but referenced as an short buffer. */
private static ShortBuffer shortBuffer = byteBuffer.asShortBuffer();
/** Raw integer array. */
private int[] rawBuffer;
/** The number of vertices to be drawn in the next draw call. Reset to 0 between draw calls. */
private int vertexCount;
/** The first coordinate to be used for the texture. */
private double textureU;
/** The second coordinate to be used for the texture. */
private double textureV;
private int brightness;
/** The color (RGBA) value to be used for the following draw call. */
private int color;
/** Whether the current draw object for this tessellator has color values. */
private boolean hasColor;
/** Whether the current draw object for this tessellator has texture coordinates. */
private boolean hasTexture;
private boolean hasBrightness;
/** Whether the current draw object for this tessellator has normal values. */
private boolean hasNormals;
/** The index into the raw buffer to be used for the next data. */
private int rawBufferIndex;
/**
* The number of vertices manually added to the given draw call. This differs from vertexCount because it adds extra
* vertices when converting quads to triangles.
*/
private int addedVertices;
/** Disables all color information for the following draw call. */
private boolean isColorDisabled;
/** The draw mode currently being used by the tessellator. */
private int drawMode;
/** An offset to be applied along the x-axis for all vertices in this draw call. */
private double xOffset;
/** An offset to be applied along the y-axis for all vertices in this draw call. */
private double yOffset;
/** An offset to be applied along the z-axis for all vertices in this draw call. */
private double zOffset;
/** The normal to be applied to the face being drawn. */
private int normal;
/** The static instance of the Tessellator. */
public static final Tessellator instance = new Tessellator(2097152);
/** Whether this tessellator is currently in draw mode. */
private boolean isDrawing;
/** The size of the buffers used (in integers). */
private int bufferSize;
private static final String __OBFID = "CL_00000960";
private Tessellator(int p_i1250_1_)
{
}
public Tessellator()
{
}
static
{
instance.defaultTexture = true;
}
/**
* Draws the data set up in this tessellator and resets the state to prepare for new drawing.
*/
public int draw()
{
if (!this.isDrawing)
{
throw new IllegalStateException("Not tesselating!");
}
else
{
this.isDrawing = false;
int offs = 0;
while (offs < vertexCount)
{
int vtc = Math.min(vertexCount - offs, nativeBufferSize >> 5);
this.intBuffer.clear();
this.intBuffer.put(this.rawBuffer, offs * 8, vtc * 8);
this.byteBuffer.position(0);
this.byteBuffer.limit(vtc * 32);
offs += vtc;
if (this.hasTexture)
{
this.floatBuffer.position(3);
GL11.glTexCoordPointer(2, 32, this.floatBuffer);
GL11.glEnableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
}
if (this.hasBrightness)
{
OpenGlHelper.setClientActiveTexture(OpenGlHelper.lightmapTexUnit);
this.shortBuffer.position(14);
GL11.glTexCoordPointer(2, 32, this.shortBuffer);
GL11.glEnableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
OpenGlHelper.setClientActiveTexture(OpenGlHelper.defaultTexUnit);
}
if (this.hasColor)
{
this.byteBuffer.position(20);
GL11.glColorPointer(4, true, 32, this.byteBuffer);
GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
}
if (this.hasNormals)
{
this.byteBuffer.position(24);
GL11.glNormalPointer(32, this.byteBuffer);
GL11.glEnableClientState(GL11.GL_NORMAL_ARRAY);
}
this.floatBuffer.position(0);
GL11.glVertexPointer(3, 32, this.floatBuffer);
GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
GL11.glDrawArrays(this.drawMode, 0, vtc);
GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);
if (this.hasTexture)
{
GL11.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
}
if (this.hasBrightness)
{
OpenGlHelper.setClientActiveTexture(OpenGlHelper.lightmapTexUnit);
GL11.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
OpenGlHelper.setClientActiveTexture(OpenGlHelper.defaultTexUnit);
}
if (this.hasColor)
{
GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);
}
if (this.hasNormals)
{
GL11.glDisableClientState(GL11.GL_NORMAL_ARRAY);
}
}
if (rawBufferSize > 0x20000 && rawBufferIndex < (rawBufferSize << 3))
{
rawBufferSize = 0x10000;
rawBuffer = new int[rawBufferSize];
}
int i = this.rawBufferIndex * 4;
this.reset();
return i;
}
}
public TesselatorVertexState getVertexState(float p_147564_1_, float p_147564_2_, float p_147564_3_)
{
int[] aint = new int[this.rawBufferIndex];
PriorityQueue priorityqueue = new PriorityQueue(this.rawBufferIndex, new QuadComparator(this.rawBuffer, p_147564_1_ + (float)this.xOffset, p_147564_2_ + (float)this.yOffset, p_147564_3_ + (float)this.zOffset));
byte b0 = 32;
int i;
for (i = 0; i < this.rawBufferIndex; i += b0)
{
priorityqueue.add(Integer.valueOf(i));
}
for (i = 0; !priorityqueue.isEmpty(); i += b0)
{
int j = ((Integer)priorityqueue.remove()).intValue();
for (int k = 0; k < b0; ++k)
{
aint[i + k] = this.rawBuffer[j + k];
}
}
System.arraycopy(aint, 0, this.rawBuffer, 0, aint.length);
return new TesselatorVertexState(aint, this.rawBufferIndex, this.vertexCount, this.hasTexture, this.hasBrightness, this.hasNormals, this.hasColor);
}
public void setVertexState(TesselatorVertexState p_147565_1_)
{
while (p_147565_1_.getRawBuffer().length > rawBufferSize && rawBufferSize > 0)
{
rawBufferSize <<= 1;
}
if (rawBufferSize > rawBuffer.length)
{
rawBuffer = new int[rawBufferSize];
}
System.arraycopy(p_147565_1_.getRawBuffer(), 0, this.rawBuffer, 0, p_147565_1_.getRawBuffer().length);
this.rawBufferIndex = p_147565_1_.getRawBufferIndex();
this.vertexCount = p_147565_1_.getVertexCount();
this.hasTexture = p_147565_1_.getHasTexture();
this.hasBrightness = p_147565_1_.getHasBrightness();
this.hasColor = p_147565_1_.getHasColor();
this.hasNormals = p_147565_1_.getHasNormals();
}
/**
* Clears the tessellator state in preparation for new drawing.
*/
private void reset()
{
this.vertexCount = 0;
this.byteBuffer.clear();
this.rawBufferIndex = 0;
this.addedVertices = 0;
}
/**
* Sets draw mode in the tessellator to draw quads.
*/
public void startDrawingQuads()
{
this.startDrawing(7);
}
/**
* Resets tessellator state and prepares for drawing (with the specified draw mode).
*/
public void startDrawing(int p_78371_1_)
{
if (this.isDrawing)
{
throw new IllegalStateException("Already tesselating!");
}
else
{
this.isDrawing = true;
this.reset();
this.drawMode = p_78371_1_;
this.hasNormals = false;
this.hasColor = false;
this.hasTexture = false;
this.hasBrightness = false;
this.isColorDisabled = false;
}
}
/**
* Sets the texture coordinates.
*/
public void setTextureUV(double p_78385_1_, double p_78385_3_)
{
this.hasTexture = true;
this.textureU = p_78385_1_;
this.textureV = p_78385_3_;
}
public void setBrightness(int p_78380_1_)
{
this.hasBrightness = true;
this.brightness = p_78380_1_;
}
/**
* Sets the RGB values as specified, converting from floats between 0 and 1 to integers from 0-255.
*/
public void setColorOpaque_F(float p_78386_1_, float p_78386_2_, float p_78386_3_)
{
this.setColorOpaque((int)(p_78386_1_ * 255.0F), (int)(p_78386_2_ * 255.0F), (int)(p_78386_3_ * 255.0F));
}
/**
* Sets the RGBA values for the color, converting from floats between 0 and 1 to integers from 0-255.
*/
public void setColorRGBA_F(float p_78369_1_, float p_78369_2_, float p_78369_3_, float p_78369_4_)
{
this.setColorRGBA((int)(p_78369_1_ * 255.0F), (int)(p_78369_2_ * 255.0F), (int)(p_78369_3_ * 255.0F), (int)(p_78369_4_ * 255.0F));
}
/**
* Sets the RGB values as specified, and sets alpha to opaque.
*/
public void setColorOpaque(int p_78376_1_, int p_78376_2_, int p_78376_3_)
{
this.setColorRGBA(p_78376_1_, p_78376_2_, p_78376_3_, 255);
}
/**
* Sets the RGBA values for the color. Also clamps them to 0-255.
*/
public void setColorRGBA(int red, int green, int blue, int alpha)
{
if (!this.isColorDisabled)
{
if (red > 255)
{
red = 255;
}
if (green > 255)
{
green = 255;
}
if (blue > 255)
{
blue = 255;
}
if (alpha > 255)
{
alpha = 255;
}
if (red < 0)
{
red = 0;
}
if (green < 0)
{
green = 0;
}
if (blue < 0)
{
blue = 0;
}
if (alpha < 0)
{
alpha = 0;
}
this.hasColor = true;
if (ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN)
{
this.color = alpha << 24 | blue << 16 | green << 8 | red;
}
else
{
this.color = red << 24 | green << 16 | blue << 8 | alpha;
}
}
}
public void func_154352_a(byte p_154352_1_, byte p_154352_2_, byte p_154352_3_)
{
this.setColorOpaque(p_154352_1_ & 255, p_154352_2_ & 255, p_154352_3_ & 255);
}
/**
* Adds a vertex specifying both x,y,z and the texture u,v for it.
*/
public void addVertexWithUV(double p_78374_1_, double p_78374_3_, double p_78374_5_, double p_78374_7_, double p_78374_9_)
{
this.setTextureUV(p_78374_7_, p_78374_9_);
this.addVertex(p_78374_1_, p_78374_3_, p_78374_5_);
}
/**
* Adds a vertex with the specified x,y,z to the current draw call. It will trigger a draw() if the buffer gets
* full.
*/
public void addVertex(double p_78377_1_, double p_78377_3_, double p_78377_5_)
{
if (rawBufferIndex >= rawBufferSize - 32)
{
if (rawBufferSize == 0)
{
rawBufferSize = 0x10000;
rawBuffer = new int[rawBufferSize];
}
else
{
rawBufferSize *= 2;
rawBuffer = Arrays.copyOf(rawBuffer, rawBufferSize);
}
}
++this.addedVertices;
if (this.hasTexture)
{
this.rawBuffer[this.rawBufferIndex + 3] = Float.floatToRawIntBits((float)this.textureU);
this.rawBuffer[this.rawBufferIndex + 4] = Float.floatToRawIntBits((float)this.textureV);
}
if (this.hasBrightness)
{
this.rawBuffer[this.rawBufferIndex + 7] = this.brightness;
}
if (this.hasColor)
{
this.rawBuffer[this.rawBufferIndex + 5] = this.color;
}
if (this.hasNormals)
{
this.rawBuffer[this.rawBufferIndex + 6] = this.normal;
}
this.rawBuffer[this.rawBufferIndex + 0] = Float.floatToRawIntBits((float)(p_78377_1_ + this.xOffset));
this.rawBuffer[this.rawBufferIndex + 1] = Float.floatToRawIntBits((float)(p_78377_3_ + this.yOffset));
this.rawBuffer[this.rawBufferIndex + 2] = Float.floatToRawIntBits((float)(p_78377_5_ + this.zOffset));
this.rawBufferIndex += 8;
++this.vertexCount;
}
/**
* Sets the color to the given opaque value (stored as byte values packed in an integer).
*/
public void setColorOpaque_I(int p_78378_1_)
{
int j = p_78378_1_ >> 16 & 255;
int k = p_78378_1_ >> 8 & 255;
int l = p_78378_1_ & 255;
this.setColorOpaque(j, k, l);
}
/**
* Sets the color to the given color (packed as bytes in integer) and alpha values.
*/
public void setColorRGBA_I(int p_78384_1_, int p_78384_2_)
{
int k = p_78384_1_ >> 16 & 255;
int l = p_78384_1_ >> 8 & 255;
int i1 = p_78384_1_ & 255;
this.setColorRGBA(k, l, i1, p_78384_2_);
}
/**
* Disables colors for the current draw call.
*/
public void disableColor()
{
this.isColorDisabled = true;
}
/**
* Sets the normal for the current draw call.
*/
public void setNormal(float p_78375_1_, float p_78375_2_, float p_78375_3_)
{
this.hasNormals = true;
byte b0 = (byte)((int)(p_78375_1_ * 127.0F));
byte b1 = (byte)((int)(p_78375_2_ * 127.0F));
byte b2 = (byte)((int)(p_78375_3_ * 127.0F));
this.normal = b0 & 255 | (b1 & 255) << 8 | (b2 & 255) << 16;
}
/**
* Sets the translation for all vertices in the current draw call.
*/
public void setTranslation(double p_78373_1_, double p_78373_3_, double p_78373_5_)
{
this.xOffset = p_78373_1_;
this.yOffset = p_78373_3_;
this.zOffset = p_78373_5_;
}
/**
* Offsets the translation for all vertices in the current draw call.
*/
public void addTranslation(float p_78372_1_, float p_78372_2_, float p_78372_3_)
{
this.xOffset += (double)p_78372_1_;
this.yOffset += (double)p_78372_2_;
this.zOffset += (double)p_78372_3_;
}
}