struct MaterialVertexInputs {
#ifdef HAS_ATTRIBUTE_COLOR
    vec4 color;
#endif
#ifdef HAS_ATTRIBUTE_UV0
    vec2 uv0;
#endif
#ifdef HAS_ATTRIBUTE_UV1
    vec2 uv1;
#endif
#ifdef VARIABLE_CUSTOM0
    vec4 VARIABLE_CUSTOM0;
#endif
#ifdef VARIABLE_CUSTOM1
    vec4 VARIABLE_CUSTOM1;
#endif
#ifdef VARIABLE_CUSTOM2
    vec4 VARIABLE_CUSTOM2;
#endif
#ifdef VARIABLE_CUSTOM3
    vec4 VARIABLE_CUSTOM3;
#endif
#ifdef HAS_ATTRIBUTE_TANGENTS
    vec3 worldNormal;
#endif
    vec4 worldPosition;
#ifdef VERTEX_DOMAIN_DEVICE
#ifdef MATERIAL_HAS_CLIP_SPACE_TRANSFORM
    mat4 clipSpaceTransform;
#endif // MATERIAL_HAS_CLIP_SPACE_TRANSFORM
#endif // VERTEX_DOMAIN_DEVICE
};

// Workaround for a driver bug on ARM Bifrost GPUs. Assigning a structure member
// (directly or inside an expression) to an invariant causes a driver crash.
vec4 getWorldPosition(const MaterialVertexInputs material) {
    return material.worldPosition;
}

#ifdef VERTEX_DOMAIN_DEVICE
#ifdef MATERIAL_HAS_CLIP_SPACE_TRANSFORM
mat4 getMaterialClipSpaceTransform(const MaterialVertexInputs material) {
    return material.clipSpaceTransform;
}
#endif // MATERIAL_HAS_CLIP_SPACE_TRANSFORM
#endif // VERTEX_DOMAIN_DEVICE

void initMaterialVertex(out MaterialVertexInputs material) {
#ifdef HAS_ATTRIBUTE_COLOR
    material.color = mesh_color;
#endif
#ifdef HAS_ATTRIBUTE_UV0
    #ifdef FLIP_UV_ATTRIBUTE
    material.uv0 = vec2(mesh_uv0.x, 1.0 - mesh_uv0.y);
    #else
    material.uv0 = mesh_uv0;
    #endif
#endif
#ifdef HAS_ATTRIBUTE_UV1
    #ifdef FLIP_UV_ATTRIBUTE
    material.uv1 = vec2(mesh_uv1.x, 1.0 - mesh_uv1.y);
    #else
    material.uv1 = mesh_uv1;
    #endif
#endif
#ifdef VARIABLE_CUSTOM0
    material.VARIABLE_CUSTOM0 = vec4(0.0);
#endif
#ifdef VARIABLE_CUSTOM1
    material.VARIABLE_CUSTOM1 = vec4(0.0);
#endif
#ifdef VARIABLE_CUSTOM2
    material.VARIABLE_CUSTOM2 = vec4(0.0);
#endif
#ifdef VARIABLE_CUSTOM3
    material.VARIABLE_CUSTOM3 = vec4(0.0);
#endif
    material.worldPosition = computeWorldPosition();
#ifdef VERTEX_DOMAIN_DEVICE
#ifdef MATERIAL_HAS_CLIP_SPACE_TRANSFORM
    material.clipSpaceTransform = mat4(1.0);
#endif
#endif
}