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package makamys.lodmod.mixin;
import java.util.ArrayList;
import java.util.List;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import makamys.lodmod.ducks.ITessellator;
import makamys.lodmod.renderer.ChunkMesh;
import makamys.lodmod.renderer.MeshQuad;
import makamys.lodmod.renderer.MeshQuad.QuadPlaneComparator;
import net.minecraft.client.renderer.Tessellator;
@Mixin(Tessellator.class)
abstract class MixinTessellator implements ITessellator {
@Shadow
private int vertexCount;
@Shadow
private int[] rawBuffer;
@Shadow
private double xOffset;
@Shadow
private double yOffset;
@Shadow
private double zOffset;
@Shadow
private boolean hasTexture;
@Shadow
private boolean hasBrightness;
@Shadow
private boolean hasColor;
@Shadow
private boolean hasNormals;
private static int totalOriginalQuadCount = 0;
private static int totalSimplifiedQuadCount = 0;
/*
public static void endSave() {
if(out == null) {
return;
}
try {
out.close();
String nameList = String.join("\n", ((TextureMap)Minecraft.getMinecraft().getTextureManager().getTexture(TextureMap.locationBlocksTexture)).mapUploadedSprites.keySet());
Files.write(nameList, new File("tessellator_strings.txt"), Charset.forName("UTF-8"));
out = null;
} catch (IOException e) {
e.printStackTrace();
}
}*/
public ChunkMesh toChunkMesh() {
if(this.vertexCount % 4 != 0) {
System.out.println("Error: Vertex count is not a multiple of 4");
return null;
}
List<MeshQuad> quads = new ArrayList<>();
List<Integer> spriteIndexes = new ArrayList<>();
List<Byte> xs = new ArrayList<>();
List<Byte> ys = new ArrayList<>();
List<Byte> zs = new ArrayList<>();
List<Byte> relUs = new ArrayList<>();
List<Byte> relVs = new ArrayList<>();
List<Byte> bUs = new ArrayList<>();
List<Byte> bVs = new ArrayList<>();
List<Integer> cs = new ArrayList<>();
for(int quadI = 0; quadI < this.vertexCount / 4; quadI++) {
MeshQuad quad = new MeshQuad(rawBuffer, quadI * 32, new ChunkMesh.Flags(hasTexture, hasBrightness, hasColor, hasNormals));
if(quad.bUs[0] == quad.bUs[1] && quad.bUs[1] == quad.bUs[2] && quad.bUs[2] == quad.bUs[3] && quad.bUs[3] == quad.bVs[0] && quad.bVs[0] == quad.bVs[1] && quad.bVs[1] == quad.bVs[2] && quad.bVs[2] == quad.bVs[3] && quad.bVs[3] == 0) {
quad.deleted = true;
}
if(quad.plane == quad.PLANE_XZ && !quad.isClockwiseXZ()) {
// water hack
quad.deleted = true;
}
quads.add(quad);
}
boolean optimize = true;
if(optimize) {
ArrayList<ArrayList<MeshQuad>> quadsByPlaneDir = new ArrayList<>(); // XY, XZ, YZ
for(int i = 0; i < 3; i++) {
quadsByPlaneDir.add(new ArrayList<MeshQuad>());
}
for(MeshQuad quad : quads) {
if(quad.plane != MeshQuad.PLANE_NONE) {
quadsByPlaneDir.get(quad.plane).add(quad);
}
}
for(int plane = 0; plane < 3; plane++) {
quadsByPlaneDir.get(plane).sort(MeshQuad.QuadPlaneComparator.quadPlaneComparators[plane]);
}
for(int plane = 0; plane < 3; plane++) {
List<MeshQuad> planeDirQuads = quadsByPlaneDir.get(plane);
int planeStart = 0;
for(int quadI = 0; quadI < planeDirQuads.size(); quadI++) {
MeshQuad quad = planeDirQuads.get(quadI);
MeshQuad nextQuad = quadI == planeDirQuads.size() - 1 ? null : planeDirQuads.get(quadI + 1);
if(!quad.onSamePlaneAs(nextQuad)) {
simplifyPlane(planeDirQuads.subList(planeStart, quadI));
planeStart = quadI + 1;
}
}
}
}
int quadCount = countValidQuads(quads);
totalOriginalQuadCount += quads.size();
totalSimplifiedQuadCount += quadCount;
//System.out.println("simplified quads " + totalOriginalQuadCount + " -> " + totalSimplifiedQuadCount + " (ratio: " + ((float)totalSimplifiedQuadCount / (float)totalOriginalQuadCount) + ") totalMergeCountByPlane: " + Arrays.toString(totalMergeCountByPlane));
if(quadCount > 0) {
return new ChunkMesh(
(int)(-xOffset / 16), (int)(-yOffset / 16), (int)(-zOffset / 16),
new ChunkMesh.Flags(hasTexture, hasBrightness, hasColor, hasNormals),
quadCount, quads);
} else {
return null;
}
}
private void simplifyPlane(List<MeshQuad> planeQuads) {
MeshQuad lastQuad = null;
// Pass 1: merge quads to create rows
for(MeshQuad quad : planeQuads) {
if(lastQuad != null) {
lastQuad.tryToMerge(quad);
}
if(quad.isValid(quad)) {
lastQuad = quad;
}
}
// Pass 2: merge rows to create rectangles
// TODO optimize?
for(int i = 0; i < planeQuads.size(); i++) {
for(int j = i + 1; j < planeQuads.size(); j++) {
planeQuads.get(i).tryToMerge(planeQuads.get(j));
}
}
}
private int countValidQuads(List<MeshQuad> quads) {
int quadCount = 0;
for(MeshQuad quad : quads) {
if(!quad.deleted) {
quadCount++;
}
}
return quadCount;
}
}
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