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This option has the following knock-on effects of other rendering systems to prevent potential bugs or artifacts: * For non-Nanite meshes, enabling this option will force instances of draw commands with this material applied to always invalidate VSM page cache when instance culling for VSM shadows. * For Nanite meshes, enabling this option will force all clusters of all instances to pad cluster culling bounds and invalidate cached VSM pages, even if clusters don't have this material applied to it, as it would be prohibitively expensive to determine if no materials on the cluster would force invalidation. #rb ola.olsson, massimo.tristano [CL 26448477 by jamie hayes in 5.3 branch]
99 lines
4.9 KiB
C
99 lines
4.9 KiB
C
// Copyright Epic Games, Inc. All Rights Reserved.
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/*================================================================================================
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!!!! Changing this file requires recompilation of the engine !!!
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=================================================================================================*/
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#pragma once
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// GPUCULL_TODO: Eventually we need to remove this workaround
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#define VF_TREAT_INSTANCE_ID_OFFSET_AS_PRIMITIVE_ID_FLAG (1U << 31U)
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#define PRIMITIVE_ID_NUM_BITS (20u) // Max of 1,048,576 primitives
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#define INSTANCE_ID_NUM_BITS (24u) // Max of 16,777,216 instances in the buffer
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#define INSTANCE_SCENE_DATA_FLAGS_NUM_BITS (12u) // Max of 12 flags
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#define INSTANCE_RELATIVE_ID_NUM_BITS (24u) // Max of 16,777,216 instances per primitive
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#define INSTANCE_CUSTOM_DATA_COUNT_NUM_BITS (8u) // Max of 255 custom data floats per instance
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#define MAX_PRIMITIVE_ID (1U << PRIMITIVE_ID_NUM_BITS)
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#define MAX_INSTANCE_ID (1U << INSTANCE_ID_NUM_BITS)
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#define PRIMITIVE_ID_MASK ((1u << PRIMITIVE_ID_NUM_BITS) - 1u)
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#define INSTANCE_ID_MASK ((1u << INSTANCE_ID_NUM_BITS) - 1u)
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#define INSTANCE_RELATIVE_ID_MASK ((1u << INSTANCE_RELATIVE_ID_NUM_BITS) - 1u)
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#define INVALID_PRIMITIVE_ID PRIMITIVE_ID_MASK
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// Primitive scene data flags
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#define PRIMITIVE_SCENE_DATA_FLAG_CAST_SHADOWS 0x1
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#define PRIMITIVE_SCENE_DATA_FLAG_USE_SINGLE_SAMPLE_SHADOW_SL 0x2
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#define PRIMITIVE_SCENE_DATA_FLAG_USE_VOLUMETRIC_LM_SHADOW_SL 0x4
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#define PRIMITIVE_SCENE_DATA_FLAG_DECAL_RECEIVER 0x8
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#define PRIMITIVE_SCENE_DATA_FLAG_CACHE_SHADOW_AS_STATIC 0x10
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#define PRIMITIVE_SCENE_DATA_FLAG_OUTPUT_VELOCITY 0x20
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#define PRIMITIVE_SCENE_DATA_FLAG_DETERMINANT_SIGN 0x40
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_DISTANCE_FIELD_REPRESENTATION 0x80
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_CAPSULE_REPRESENTATION 0x100
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_CAST_CONTACT_SHADOW 0x200
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_PRIMITIVE_CUSTOM_DATA 0x400
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#define PRIMITIVE_SCENE_DATA_FLAG_LIGHTING_CHANNEL_0 0x800
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#define PRIMITIVE_SCENE_DATA_FLAG_LIGHTING_CHANNEL_1 0x1000
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#define PRIMITIVE_SCENE_DATA_FLAG_LIGHTING_CHANNEL_2 0x2000
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_INSTANCE_LOCAL_BOUNDS 0x4000
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#define PRIMITIVE_SCENE_DATA_FLAG_EVALUATE_WORLD_POSITION_OFFSET 0x8000
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_NANITE_IMPOSTER 0x10000
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#define PRIMITIVE_SCENE_DATA_FLAG_INSTANCE_DRAW_DISTANCE_CULL 0x20000
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#define PRIMITIVE_SCENE_DATA_FLAG_WPO_DISABLE_DISTANCE 0x40000
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#define PRIMITIVE_SCENE_DATA_FLAG_HAS_ALWAYS_EVALUATE_WPO_MATERIALS 0x80000
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#define PRIMITIVE_SCENE_DATA_FLAG_WRITES_CUSTOM_DEPTH_STENCIL 0x100000
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#define PRIMITIVE_SCENE_DATA_FLAG_DISABLE_MATERIAL_INVALIDATIONS 0x200000
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#define PRIMITIVE_SCENE_DATA_FLAG_HOLDOUT 0x400000
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#define PRIMITIVE_SCENE_DATA_FLAG_SPLINE_MESH 0x800000
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// Primitive visibility flags
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#define PRIMITIVE_VISIBILITY_FLAG_FORCE_HIDDEN 0x1
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#define PRIMITIVE_VISIBILITY_FLAG_CAST_HIDDEN_SHADOW 0x2
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_GAME 0x4
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_EDITOR 0x8
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_REFLECTION_CAPTURES 0x10
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_REAL_TIME_SKY_CAPTURES 0x20
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_RAY_TRACING 0x40
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_SCENE_CAPTURE_ONLY 0x80
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#define PRIMITIVE_VISIBILITY_FLAG_HIDDEN_IN_SCENE_CAPTURE 0x100
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#define PRIMITIVE_VISIBILITY_FLAG_VISIBLE_IN_LUMEN_SCENE 0x200
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#define SUPPORT_REVERSE_CULLING_IN_NANITE 0
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#if SUPPORT_REVERSE_CULLING_IN_NANITE
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#define PRIMITIVE_SCENE_DATA_FLAG_REVERSE_CULLING NOTE: Out of flags
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#endif
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// Stride of a single primitive's data in float4's
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#define PRIMITIVE_SCENE_DATA_STRIDE 41
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// Currently limited by # of bits for size in primitive scene data
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#define PRIMITIVE_SCENE_DATA_MAX_PAYLOAD_EXTENSION_SIZE 255
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// Instance scene data flags
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#define INSTANCE_SCENE_DATA_FLAG_DETERMINANT_SIGN 0x1
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#define INSTANCE_SCENE_DATA_FLAG_HAS_RANDOM 0x2
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#define INSTANCE_SCENE_DATA_FLAG_HAS_CUSTOM_DATA 0x4
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#define INSTANCE_SCENE_DATA_FLAG_HAS_DYNAMIC_DATA 0x8
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#define INSTANCE_SCENE_DATA_FLAG_HAS_LIGHTSHADOW_UV_BIAS 0x10
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#define INSTANCE_SCENE_DATA_FLAG_HAS_HIERARCHY_OFFSET 0x20
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#define INSTANCE_SCENE_DATA_FLAG_HAS_LOCAL_BOUNDS 0x40
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#define INSTANCE_SCENE_DATA_FLAG_HAS_PAYLOAD_EXTENSION 0x80 // Mobile allocates only 8 bits for instance flags
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#define INSTANCE_SCENE_DATA_FLAG_HAS_EDITOR_DATA 0x100
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#define INSTANCE_SCENE_DATA_FLAG_IS_RAYTRACING_FAR_FIELD 0x200
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#define INSTANCE_SCENE_DATA_FLAG_PAYLOAD_MASK ( \
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INSTANCE_SCENE_DATA_FLAG_HAS_RANDOM \
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| INSTANCE_SCENE_DATA_FLAG_HAS_CUSTOM_DATA \
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| INSTANCE_SCENE_DATA_FLAG_HAS_DYNAMIC_DATA \
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| INSTANCE_SCENE_DATA_FLAG_HAS_LIGHTSHADOW_UV_BIAS \
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| INSTANCE_SCENE_DATA_FLAG_HAS_HIERARCHY_OFFSET \
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| INSTANCE_SCENE_DATA_FLAG_HAS_LOCAL_BOUNDS \
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| INSTANCE_SCENE_DATA_FLAG_HAS_EDITOR_DATA \
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| INSTANCE_SCENE_DATA_FLAG_HAS_PAYLOAD_EXTENSION \
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)
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