407 lines
14 KiB
Java
407 lines
14 KiB
Java
package ru.betterend.client.render;
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import com.mojang.blaze3d.platform.GlStateManager;
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import com.mojang.blaze3d.systems.RenderSystem;
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import com.mojang.blaze3d.vertex.BufferBuilder;
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import com.mojang.blaze3d.vertex.DefaultVertexFormat;
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import com.mojang.blaze3d.vertex.PoseStack;
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import com.mojang.blaze3d.vertex.Tesselator;
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import com.mojang.blaze3d.vertex.VertexBuffer;
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import com.mojang.blaze3d.vertex.VertexFormat;
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import com.mojang.math.Matrix4f;
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import com.mojang.math.Quaternion;
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import com.mojang.math.Vector3f;
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import net.fabricmc.fabric.api.client.rendering.v1.DimensionRenderingRegistry;
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import net.fabricmc.fabric.api.client.rendering.v1.WorldRenderContext;
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import net.minecraft.client.renderer.FogRenderer;
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import net.minecraft.client.renderer.GameRenderer;
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import net.minecraft.resources.ResourceLocation;
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import ru.bclib.util.BackgroundInfo;
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import ru.bclib.util.MHelper;
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import ru.betterend.BetterEnd;
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import java.util.Random;
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public class BetterEndSkyRenderer implements DimensionRenderingRegistry.SkyRenderer {
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private static final ResourceLocation NEBULA_1 = BetterEnd.makeID("textures/sky/nebula_2.png");
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private static final ResourceLocation NEBULA_2 = BetterEnd.makeID("textures/sky/nebula_3.png");
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private static final ResourceLocation HORIZON = BetterEnd.makeID("textures/sky/nebula_1.png");
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private static final ResourceLocation STARS = BetterEnd.makeID("textures/sky/stars.png");
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private static final ResourceLocation FOG = BetterEnd.makeID("textures/sky/fog.png");
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private VertexBuffer nebula1;
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private VertexBuffer nebula2;
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private VertexBuffer horizon;
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private VertexBuffer stars1;
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private VertexBuffer stars2;
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private VertexBuffer stars3;
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private VertexBuffer stars4;
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private VertexBuffer fog;
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private Vector3f axis1;
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private Vector3f axis2;
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private Vector3f axis3;
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private Vector3f axis4;
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private boolean initialised;
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private void initialise() {
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if (!initialised) {
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initStars();
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Random random = new Random(131);
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axis1 = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
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axis2 = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
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axis3 = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
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axis4 = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
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axis1.normalize();
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axis2.normalize();
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axis3.normalize();
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axis4.normalize();
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initialised = true;
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}
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}
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@Override
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public void render(WorldRenderContext context) {
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if (context.world() == null || context.matrixStack() == null) {
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return;
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}
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initialise();
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Matrix4f projectionMatrix = context.projectionMatrix();
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PoseStack matrices = context.matrixStack();
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float time = ((context.world().getDayTime() + context.tickDelta()) % 360000) * 0.000017453292F;
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float time2 = time * 2;
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float time3 = time * 3;
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FogRenderer.levelFogColor();
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RenderSystem.depthMask(false);
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RenderSystem.enableTexture();
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RenderSystem.enableBlend();
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RenderSystem.setShaderColor(1.0F ,1.0F ,1.0F ,1.0F);
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RenderSystem.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
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float blindA = 1F - BackgroundInfo.blindness;
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float blind02 = blindA * 0.2F;
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float blind06 = blindA * 0.6F;
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if (blindA > 0) {
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matrices.pushPose();
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matrices.mulPose(new Quaternion(0, time, 0, false));
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RenderSystem.setShaderTexture(0, HORIZON);
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renderBuffer(matrices, projectionMatrix, horizon, DefaultVertexFormat.POSITION_TEX, 0.77F, 0.31F, 0.73F, 0.7F * blindA);
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matrices.popPose();
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matrices.pushPose();
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matrices.mulPose(new Quaternion(0, -time, 0, false));
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RenderSystem.setShaderTexture(0, NEBULA_1);
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renderBuffer(matrices, projectionMatrix, nebula1, DefaultVertexFormat.POSITION_TEX, 0.77F, 0.31F, 0.73F, blind02);
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matrices.popPose();
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matrices.pushPose();
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matrices.mulPose(new Quaternion(0, time2, 0, false));
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RenderSystem.setShaderTexture(0, NEBULA_2);
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renderBuffer(matrices, projectionMatrix, nebula2, DefaultVertexFormat.POSITION_TEX, 0.77F, 0.31F, 0.73F, blind02);
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matrices.popPose();
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RenderSystem.setShaderTexture(0, STARS);
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matrices.pushPose();
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matrices.mulPose(axis3.rotation(time));
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renderBuffer(matrices, projectionMatrix, stars3, DefaultVertexFormat.POSITION_TEX, 0.77F, 0.31F, 0.73F, blind06);
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matrices.popPose();
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matrices.pushPose();
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matrices.mulPose(axis4.rotation(time2));
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renderBuffer(matrices, projectionMatrix, stars4, DefaultVertexFormat.POSITION_TEX, 1F, 1F, 1F, blind06);
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matrices.popPose();
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}
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float a = (BackgroundInfo.fogDensity - 1F);
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if (a > 0) {
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if (a > 1) a = 1;
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RenderSystem.setShaderTexture(0, FOG);
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renderBuffer(
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matrices,
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projectionMatrix,
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fog,
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DefaultVertexFormat.POSITION_TEX,
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BackgroundInfo.fogColorRed,
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BackgroundInfo.fogColorGreen,
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BackgroundInfo.fogColorBlue,
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a);
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}
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RenderSystem.disableTexture();
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if (blindA > 0) {
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matrices.pushPose();
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matrices.mulPose(axis1.rotation(time3));
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renderBuffer(matrices, projectionMatrix, stars1, DefaultVertexFormat.POSITION, 1, 1, 1, blind06);
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matrices.popPose();
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matrices.pushPose();
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matrices.mulPose(axis2.rotation(time2));
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renderBuffer(matrices, projectionMatrix, stars2, DefaultVertexFormat.POSITION, 0.95F, 0.64F, 0.93F, blind06);
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matrices.popPose();
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}
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RenderSystem.enableTexture();
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RenderSystem.depthMask(true);
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RenderSystem.defaultBlendFunc();
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RenderSystem.disableBlend();
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}
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private void renderBuffer(PoseStack matrices, Matrix4f matrix4f, VertexBuffer buffer, VertexFormat format, float r, float g, float b, float a) {
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RenderSystem.setShaderColor(r, g, b, a);
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if (format == DefaultVertexFormat.POSITION) {
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buffer.drawWithShader(matrices.last().pose(), matrix4f, GameRenderer.getPositionShader());
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}
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else {
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buffer.drawWithShader(matrices.last().pose(), matrix4f, GameRenderer.getPositionTexShader());
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}
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}
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private void initStars() {
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BufferBuilder buffer = Tesselator.getInstance().getBuilder();
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stars1 = buildBufferStars(buffer, stars1, 0.1, 0.30, 3500, 41315);
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stars2 = buildBufferStars(buffer, stars2, 0.1, 0.35, 2000, 35151);
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stars3 = buildBufferUVStars(buffer, stars3, 0.4, 1.2, 1000, 61354);
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stars4 = buildBufferUVStars(buffer, stars4, 0.4, 1.2, 1000, 61355);
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nebula1 = buildBufferFarFog(buffer, nebula1, 40, 60, 30, 11515);
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nebula2 = buildBufferFarFog(buffer, nebula2, 40, 60, 10, 14151);
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horizon = buildBufferHorizon(buffer, horizon);
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fog = buildBufferFog(buffer, fog);
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}
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private VertexBuffer buildBufferStars(BufferBuilder bufferBuilder, VertexBuffer buffer, double minSize, double maxSize, int count, long seed) {
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if (buffer != null) {
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buffer.close();
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}
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buffer = new VertexBuffer();
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makeStars(bufferBuilder, minSize, maxSize, count, seed);
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bufferBuilder.end();
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buffer.upload(bufferBuilder);
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return buffer;
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}
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private VertexBuffer buildBufferUVStars(BufferBuilder bufferBuilder, VertexBuffer buffer, double minSize, double maxSize, int count, long seed) {
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if (buffer != null) {
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buffer.close();
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}
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buffer = new VertexBuffer();
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makeUVStars(bufferBuilder, minSize, maxSize, count, seed);
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bufferBuilder.end();
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buffer.upload(bufferBuilder);
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return buffer;
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}
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private VertexBuffer buildBufferFarFog(BufferBuilder bufferBuilder, VertexBuffer buffer, double minSize, double maxSize, int count, long seed) {
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if (buffer != null) {
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buffer.close();
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}
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buffer = new VertexBuffer();
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makeFarFog(bufferBuilder, minSize, maxSize, count, seed);
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bufferBuilder.end();
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buffer.upload(bufferBuilder);
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return buffer;
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}
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private VertexBuffer buildBufferHorizon(BufferBuilder bufferBuilder, VertexBuffer buffer) {
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if (buffer != null) {
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buffer.close();
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}
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buffer = new VertexBuffer();
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makeCylinder(bufferBuilder, 16, 50, 100);
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bufferBuilder.end();
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buffer.upload(bufferBuilder);
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return buffer;
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}
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private VertexBuffer buildBufferFog(BufferBuilder bufferBuilder, VertexBuffer buffer) {
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if (buffer != null) {
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buffer.close();
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}
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buffer = new VertexBuffer();
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makeCylinder(bufferBuilder, 16, 50, 70);
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bufferBuilder.end();
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buffer.upload(bufferBuilder);
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return buffer;
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}
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private void makeStars(BufferBuilder buffer, double minSize, double maxSize, int count, long seed) {
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Random random = new Random(seed);
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buffer.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION);
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for (int i = 0; i < count; ++i) {
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double posX = random.nextDouble() * 2.0 - 1.0;
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double posY = random.nextDouble() * 2.0 - 1.0;
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double posZ = random.nextDouble() * 2.0 - 1.0;
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double size = MHelper.randRange(minSize, maxSize, random);
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double length = posX * posX + posY * posY + posZ * posZ;
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if (length < 1.0 && length > 0.001) {
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length = 1.0 / Math.sqrt(length);
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posX *= length;
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posY *= length;
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posZ *= length;
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double px = posX * 100.0;
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double py = posY * 100.0;
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double pz = posZ * 100.0;
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double angle = Math.atan2(posX, posZ);
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double sin1 = Math.sin(angle);
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double cos1 = Math.cos(angle);
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angle = Math.atan2(Math.sqrt(posX * posX + posZ * posZ), posY);
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double sin2 = Math.sin(angle);
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double cos2 = Math.cos(angle);
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angle = random.nextDouble() * Math.PI * 2.0;
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double sin3 = Math.sin(angle);
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double cos3 = Math.cos(angle);
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for (int index = 0; index < 4; ++index) {
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double x = (double) ((index & 2) - 1) * size;
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double y = (double) ((index + 1 & 2) - 1) * size;
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double aa = x * cos3 - y * sin3;
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double ab = y * cos3 + x * sin3;
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double dy = aa * sin2 + 0.0 * cos2;
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double ae = 0.0 * sin2 - aa * cos2;
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double dx = ae * sin1 - ab * cos1;
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double dz = ab * sin1 + ae * cos1;
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buffer.vertex(px + dx, py + dy, pz + dz).endVertex();
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}
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}
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}
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}
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private void makeUVStars(BufferBuilder buffer, double minSize, double maxSize, int count, long seed) {
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Random random = new Random(seed);
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buffer.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
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for (int i = 0; i < count; ++i) {
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double posX = random.nextDouble() * 2.0 - 1.0;
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double posY = random.nextDouble() * 2.0 - 1.0;
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double posZ = random.nextDouble() * 2.0 - 1.0;
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double size = MHelper.randRange(minSize, maxSize, random);
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double length = posX * posX + posY * posY + posZ * posZ;
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if (length < 1.0 && length > 0.001) {
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length = 1.0 / Math.sqrt(length);
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posX *= length;
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posY *= length;
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posZ *= length;
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double px = posX * 100.0;
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double py = posY * 100.0;
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double pz = posZ * 100.0;
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double angle = Math.atan2(posX, posZ);
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double sin1 = Math.sin(angle);
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double cos1 = Math.cos(angle);
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angle = Math.atan2(Math.sqrt(posX * posX + posZ * posZ), posY);
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double sin2 = Math.sin(angle);
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double cos2 = Math.cos(angle);
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angle = random.nextDouble() * Math.PI * 2.0;
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double sin3 = Math.sin(angle);
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double cos3 = Math.cos(angle);
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float minV = random.nextInt(4) / 4F;
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for (int index = 0; index < 4; ++index) {
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double x = (double) ((index & 2) - 1) * size;
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double y = (double) ((index + 1 & 2) - 1) * size;
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double aa = x * cos3 - y * sin3;
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double ab = y * cos3 + x * sin3;
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double dy = aa * sin2 + 0.0 * cos2;
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double ae = 0.0 * sin2 - aa * cos2;
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double dx = ae * sin1 - ab * cos1;
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double dz = ab * sin1 + ae * cos1;
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float texU = (index >> 1) & 1;
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float texV = (((index + 1) >> 1) & 1) / 4F + minV;
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buffer.vertex(px + dx, py + dy, pz + dz).uv(texU, texV).endVertex();
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}
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}
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}
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}
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private void makeFarFog(BufferBuilder buffer, double minSize, double maxSize, int count, long seed) {
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Random random = new Random(seed);
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buffer.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
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for (int i = 0; i < count; ++i) {
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double posX = random.nextDouble() * 2.0 - 1.0;
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double posY = random.nextDouble() - 0.5;
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double posZ = random.nextDouble() * 2.0 - 1.0;
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double size = MHelper.randRange(minSize, maxSize, random);
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double length = posX * posX + posY * posY + posZ * posZ;
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double distance = 2.0;
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if (length < 1.0 && length > 0.001) {
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length = distance / Math.sqrt(length);
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size *= distance;
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posX *= length;
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posY *= length;
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posZ *= length;
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double px = posX * 100.0;
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double py = posY * 100.0;
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double pz = posZ * 100.0;
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double angle = Math.atan2(posX, posZ);
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double sin1 = Math.sin(angle);
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double cos1 = Math.cos(angle);
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angle = Math.atan2(Math.sqrt(posX * posX + posZ * posZ), posY);
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double sin2 = Math.sin(angle);
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double cos2 = Math.cos(angle);
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angle = random.nextDouble() * Math.PI * 2.0;
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double sin3 = Math.sin(angle);
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double cos3 = Math.cos(angle);
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for (int index = 0; index < 4; ++index) {
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double x = (double) ((index & 2) - 1) * size;
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double y = (double) ((index + 1 & 2) - 1) * size;
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double aa = x * cos3 - y * sin3;
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double ab = y * cos3 + x * sin3;
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double dy = aa * sin2 + 0.0 * cos2;
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double ae = 0.0 * sin2 - aa * cos2;
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double dx = ae * sin1 - ab * cos1;
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double dz = ab * sin1 + ae * cos1;
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float texU = (index >> 1) & 1;
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float texV = ((index + 1) >> 1) & 1;
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buffer.vertex(px + dx, py + dy, pz + dz).uv(texU, texV).endVertex();
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}
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}
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}
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}
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private void makeCylinder(BufferBuilder buffer, int segments, double height, double radius) {
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buffer.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
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for (int i = 0; i < segments; i++) {
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double a1 = (double) i * Math.PI * 2.0 / (double) segments;
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double a2 = (double) (i + 1) * Math.PI * 2.0 / (double) segments;
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double px1 = Math.sin(a1) * radius;
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double pz1 = Math.cos(a1) * radius;
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double px2 = Math.sin(a2) * radius;
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double pz2 = Math.cos(a2) * radius;
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float u0 = (float) i / (float) segments;
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float u1 = (float) (i + 1) / (float) segments;
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buffer.vertex(px1, -height, pz1).uv(u0, 0).endVertex();
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buffer.vertex(px1, height, pz1).uv(u0, 1).endVertex();
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buffer.vertex(px2, height, pz2).uv(u1, 1).endVertex();
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buffer.vertex(px2, -height, pz2).uv(u1, 0).endVertex();
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}
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}
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}
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