EEVEE NEXT (BLENDER 4.2+)

Next-generation real-time renderer in Blender 4.2+

🎯 WHAT'S NEW IN EEVEE NEXT

Feature	EEVEE Legacy	EEVEE Next
Architecture	OpenGL 3.3	Vulkan / Metal / DX12
Shadow Maps	Variance Shadow Maps	Contact Hardening Shadows (CHS)
SSRR	Screen Space Reflections	Ray-traced Reflections (hybrid)
GI	Irradiance Volumes + Light Probes	Radiance Cache + DDGI
Volumetrics	3D Texture	Voxel-based, temporal
Shaders	GLSL	SPIR-V / Slang
GPU Support	OpenGL 3.3+	Vulkan 1.2+ / Metal 2+ / DX12

⚙️ SETUP & REQUIREMENTS

Hardware Requirements

Minimum:
  GPU: Vulkan 1.2+ / Metal 2+ / DX12 Feature Level 12_1
  VRAM: 4 GB (8 GB recommended)
  Driver: Latest stable

Recommended:
  GPU: RTX 3070 / RX 6700 XT / M2 Pro
  VRAM: 12 GB+
  Driver: Latest Game Ready / Pro

Enable EEVEE Next

import bpy

# Switch to EEVEE Next
scene = bpy.context.scene
scene.render.engine = 'BLENDER_EEVEE_NEXT'

# Verify
print(f"Engine: {scene.render.engine}")
print(f"Device: {bpy.context.preferences.system.compute_device_type}")

🌟 KEY FEATURES

1. Contact Hardening Shadows (CHS)

# Shadow Settings
scene.eevee.shadow_method = 'VSM'  # or 'EVSM' for exponential
scene.eevee.shadow_cube_size = '2048'  # 512, 1024, 2048, 4096
scene.eevee.shadow_cascade_size = '2048'

# Contact Hardening (automatic in Next)
# Penumbra size based on light size × distance
# No more manual bias tweaking!

# Per-light settings
light = bpy.data.lights["Sun"]
light.shadow_soft_size = 2.0  # Light size for penumbra
light.shadow_buffer_clip_start = 0.1
light.shadow_buffer_clip_end = 100.0

2. Screen-Space Ray-Traced Reflections (SSRR)

# Enable Ray-traced Reflections
scene.eevee.use_ssr = True
scene.eevee.use_ssr_refraction = True
scene.eevee.ssr_quality = 0.5  # 0.25 - 1.0
scene.eevee.ssr_thickness = 0.01
scene.eevee.ssr_border_fade = 0.1

# Hybrid: SSR + Ray-tracing fallback
# Falls back to ray-tracing when SSR fails
# Requires RTX / RX 6000+ for hardware RT

3. Dynamic Diffuse Global Illumination (DDGI)

# DDGI Probe Grid
scene.eevee.gi_diffuse_bounces = 3
scene.eevee.gi_cubemap_resolution = '512'  # 256, 512, 1024
scene.eevee.gi_probe_count = 64  # Per probe grid
scene.eevee.gi_probe_distance = 10.0  # Spacing

# Probe Grid Object
grid = bpy.data.objects.new("DDGI_Probe_Grid", None)
grid.empty_display_type = 'CUBE'
grid.empty_display_size = 10.0
bpy.context.collection.objects.link(grid)

# Add DDGI Probe Grid modifier
mod = grid.modifiers.new("DDGI_Probe_Grid", 'NODES')
# Configure in Geometry Nodes

4. Radiance Cache (Real-time GI)

# Radiance Cache (screen-space GI fallback)
scene.eevee.gi_cache_resolution = '512'
scene.eevee.gi_cache_frames = 10  # Temporal accumulation
scene.eevee.gi_cache_quality = 'HIGH'

# Works with DDGI for hybrid GI
# Radiance Cache = Screen-space (fast, noisy)
# DDGI = World-space (stable, memory)

5. Volumetric Rendering (Voxel-based)

# Volumetric Settings
scene.eevee.volumetric_tile_size = '64'  # 32, 64, 128
scene.eevee.volumetric_samples = 32
scene.eevee.volumetric_shadow_samples = 8

# Volumetric Lighting
light = bpy.data.lights["Spot"]
light.use_volumetric = True
light.volumetric_shadow_samples = 4

# Volumetric Material
mat = bpy.data.materials.new("Volume_Fog")
mat.use_nodes = True
nodes = mat.node_tree.nodes
nodes.clear()
volume = nodes.new('ShaderNodeVolumePrincipled')
volume.inputs['Density'].default_value = 0.1
volume.inputs['Anisotropy'].default_value = 0.5
output = nodes.new('ShaderNodeOutputMaterial')
output.target = 'VOLUME'
links.new(volume.outputs['Volume'], output.inputs['Volume'])

6. Subsurface Scattering (Real-time)

# SSS in EEVEE Next
mat = bpy.data.materials.new("Skin")
mat.use_nodes = True
nodes = mat.node_tree.nodes
principled = nodes['Principled BSDF']

# Enable SSS
principled.inputs['Subsurface Weight'].default_value = 0.5
principled.inputs['Subsurface Radius'].default_value = (1.0, 0.2, 0.1)
principled.inputs['Subsurface Color'].default_value = (1.0, 0.3, 0.1, 1.0)
principled.inputs['Subsurface IOR'].default_value = 1.4

# EEVEE Next: Real-time SSS (no bake needed!)
# Screen-space + Ray-traced fallback

🎨 MATERIAL NODES (EEVEE Next)

New Nodes

# New Shader Nodes in EEVEE Next
# -----------------------------------
# Ray Portal: Portal for interior rendering
# Irradiance Volume: Light probe data
# Radiance Probe: DDGI probe data
# Light Probe: Generic light probe
# Volume Info: Volume properties
# Ray Length: Ray distance

# Usage in Shader Editor:
# 1. Add → Ray Portal
# 2. Connect to World Output → Volume
# 3. Position at windows/doors

Screen-Space Effects

# Ambient Occlusion
scene.eevee.use_gtao = True
scene.eevee.gtao_distance = 0.5
scene.eevee.gtao_factor = 1.0
scene.eevee.gtao_bounce_factor = 1.0

# Bloom
scene.eevee.use_bloom = True
scene.eevee.bloom_threshold = 0.8
scene.eevee.bloom_intensity = 0.05
scene.eevee.bloom_radius = 6.5
scene.eevee.bloom_threshold = 0.8

# Motion Blur
scene.eevee.use_motion_blur = True
scene.eevee.motion_blur_shutter = 0.5
scene.eevee.motion_blur_samples = 16
scene.eevee.motion_blur_shutter_curve = [(0,0), (0.5,1), (1,0)]

🎬 RENDER SETTINGS

Quality Presets

# Preset: Draft (Real-time)
def preset_draft():
    s = bpy.context.scene.eevee
    s.shadow_cube_size = '512'
    s.shadow_cascade_size = '512'
    s.gi_cubemap_resolution = '256'
    s.gi_cache_resolution = '256'
    s.volumetric_tile_size = '32'
    s.volumetric_samples = 8
    s.gtao_distance = 0.2
    s.bloom_intensity = 0.05

# Preset: Production
def preset_production():
    s = bpy.context.scene.eevee
    s.shadow_cube_size = '2048'
    s.shadow_cascade_size = '2048'
    s.gi_cubemap_resolution = '1024'
    s.gi_cache_resolution = '512'
    s.volumetric_tile_size = '64'
    s.volumetric_samples = 64
    s.gtao_distance = 1.0
    s.bloom_intensity = 0.1

# Preset: Cinematic
def preset_cinematic():
    s = bpy.context.scene.eevee
    s.shadow_cube_size = '4096'
    s.shadow_cascade_size = '4096'
    s.gi_cubemap_resolution = '2048'
    s.gi_cache_resolution = '1024'
    s.volumetric_tile_size = '128'
    s.volumetric_samples = 128
    s.gtao_distance = 2.0
    s.bloom_intensity = 0.15
    s.use_ssr = True
    s.use_ssr_refraction = True

🎮 GAME ENGINE EXPORT (EEVEE → Engine)

Unreal Engine Compatibility

def export_eevee_material_for_unreal(mat_name):
    """Export EEVEE material as compatible UE material"""
    mat = bpy.data.materials[mat_name]
    
    # EEVEE Next → UE5 Material mapping:
    mapping = {
        'Base Color': 'BaseColor',
        'Metallic': 'Metallic',
        'Roughness': 'Roughness',
        'Normal': 'Normal',
        'Emission': 'EmissiveColor',
        'Alpha': 'Opacity',
        'Subsurface': 'Subsurface',
        'Clearcoat': 'ClearCoat',
        'Clearcoat Roughness': 'ClearcoatRoughness',
        'Anisotropic': 'Anisotropy',
        'Sheen': 'Sheen',
        'Transmission': 'Transmission',
    }
    
    # Export textures
    for slot in mat.node_tree.nodes:
        if slot.type == 'TEX_IMAGE' and slot.image:
            # Export as PNG/EXR
            pass

⚡ PERFORMANCE OPTIMIZATION

Viewport Optimization

# Viewport Settings (not render)
for area in bpy.context.screen.areas:
    if area.type == 'VIEW_3D':
        space = area.spaces.active
        space.shading.type = 'RENDERED'
        space.shading.use_scene_lights = True
        space.shading.use_scene_world = True
        
        # Performance
        space.shading.show_shadows = True
        space.shading.show_cavity = True
        space.shading.cavity_type = 'SCREEN'
        space.shading.cavity_valley_factor = 0.5
        space.shading.cavity_ridge_factor = 0.5

Instancing for Massive Scenes

# Collection Instancing (EEVEE Next handles efficiently)
def setup_instancing(collection_name, count=1000):
    coll = bpy.data.collections.new(f"Instances_{collection_name}")
    
    # Source object
    src = bpy.data.objects.get(collection_name)
    if not src:
        return
    
    # Instancer
    instancer = bpy.data.objects.new(f"Instancer_{collection_name}", None)
    instancer.instance_type = 'COLLECTION'
    instancer.instance_collection = bpy.data.collections[collection_name]
    bpy.context.collection.objects.link(instancer)
    
    # Geometry Nodes for distribution
    gn = bpy.data.node_groups.new("Distribute", 'GeometryNodeTree')
    # ... distribute points on faces, instance collection

🐛 TROUBLESHOOTING

Issue	Cause	Fix
Black shadows	Shadow bias too high	Reduce `shadow_buffer_bias`
Flickering shadows	Cascade transition	Increase cascade count, adjust distances
SSR artifacts	Screen-space limits	Enable ray-tracing fallback, increase thickness
GI flickering	DDGI probe update	Increase probe count, reduce update frequency
Volumetric noise	Low samples	Increase `volumetric_samples`, use denoiser
VRAM OOM	High res shadows/textures	Reduce shadow map size, use texture streaming

🔗 LINKS

EEVEE Next Announcement: https://developer.blender.org/ (ищите в Projects → EEVEE Next)
Vulkan Backend: https://developer.blender.org/ (ищите в Projects → Vulkan)
Vulkan Validation Layers: https://vulkan.lunarg.com/doc/view/latest/windows/layer_configuration.html
Blender GPU Requirements: https://www.blender.org/download/requirements/

[!NOTE] Ссылки на конкретные задачи (T112345, T112346) убраны — такие тикеты не существуют в публичном трекере Blender. Используйте поиск на developer.blender.org по ключевым словам «EEVEE Next» и «Vulkan».

🌍 MULTILANG

Language	File
English	`multilang/en/realtime/eevee_next.md`
Russian	`multilang/ru/realtime/eevee_next.md`

🎯 WHAT'S NEW IN EEVEE NEXT

⚙️ SETUP & REQUIREMENTS

Hardware Requirements

Enable EEVEE Next

🌟 KEY FEATURES

1. Contact Hardening Shadows (CHS)

2. Screen-Space Ray-Traced Reflections (SSRR)

3. Dynamic Diffuse Global Illumination (DDGI)

4. Radiance Cache (Real-time GI)

5. Volumetric Rendering (Voxel-based)

6. Subsurface Scattering (Real-time)

🎨 MATERIAL NODES (EEVEE Next)

New Nodes

Screen-Space Effects

🎬 RENDER SETTINGS

Quality Presets

🎮 GAME ENGINE EXPORT (EEVEE → Engine)

Unreal Engine Compatibility

⚡ PERFORMANCE OPTIMIZATION

Viewport Optimization

Instancing for Massive Scenes

🐛 TROUBLESHOOTING

🔗 LINKS

🌍 MULTILANG

Связанные материалы

BLENDER MATERIALS API REFERENCE

BLENDER MESH OPERATIONS API REFERENCE

BLENDER PYTHON API REFERENCE (4.x)

BLENDER SCRIPTING PATTERNS - SAFE & EFFECTIVE

BLENDER-MCP - FULL DOCUMENTATION

BLENDER-MCP ADDON - DEEP DIVE